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  • 14001.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Omfördelning av fukt och risk för mikrobiell påväxt på virkesstycken i virkespaket2012Report (Refereed)
    Abstract [sv]

    Syftet med denna studie är att öka kunskapen dels om tiden för fuktomfördelning i virkesstycken i virkespaket, dels om betydelsen av fuktinnehåll i kombination med lagringstemperatur och lagringstid med avseende på mikrobiell påväxt.

  • 14002.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    P-märkning av byggsystem för takkonstruktioner och taktäckning2012In: Bygg&Teknik, no 4, p. 26-28Article in journal (Other (popular science, discussion, etc.))
  • 14003.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    P-märkning av byggsystem för ytterväggar och fasader2009In: Bygg & Teknik, Vol. 8, no 9, p. 33-34Article in journal (Other (popular science, discussion, etc.))
  • 14004.
    Olsson, Lars
    RISE - Research Institutes of Sweden, Built Environment, Building Technology. Chalmers University of Technology, Sweden.
    Rain intrusion rates at façade details - A summary of results from four laboratory studies2017In: Energy Procedia, 2017, p. 387-392Conference paper (Refereed)
    Abstract [en]

    More knowledge and realistic data on inward leakage is needed not only to better understand and confirm rain resistance of different facades, but also to carry out reliable theoretical moisture risk assessments of façade details in external walls. This article is an attempt to highlight amounts of expected leakage based on four laboratory studies. The results show that under heavy driving rain conditions, there may be continuous point leakage of significant volumes of water (0,01-0,05 l/min) in small invisible deficiencies, and corresponds to up to 2% of the applied water load. The leakage rate also depends, more or less, on the size, position and geometry of the deficiency, cumulative runoff rates, size of projecting details and surface properties. © 2017 The Authors.

  • 14005.
    Olsson, Lars
    RISE - Research Institutes of Sweden, Built Environment, Building Technology. Chalmers University of Technology, Sweden.
    Rain resistance of façades with façade details: A summary of three field and laboratory studies2018In: Journal of Building Physics, ISSN 1744-2591, E-ISSN 1744-2583, Vol. 41, no 6, p. 521-532Article in journal (Refereed)
    Abstract [en]

    ne of the main functions of the exterior walls and façades is to protect the indoor and the sensitive parts of construction from the outdoor climate. Exposure of driving rain is the most prominent moisture source a wall has to resist. Despite this, there is a lack of information on rain resistance. Field measurements on real-life external walls show that recurrent water leakage under driving rain conditions is observed in five out of seven new-built houses in Sweden, including those with ventilated façades. About a 100 commercial laboratory façade tests, mounted by façade suppliers, and targeted laboratory experiments showed that it is almost impossible to achieve fully tight façade solutions, and keep them sealed. Nearly, all test walls with façade details leaked, almost regardless of façade type and sealing efforts. The results from field and laboratory measurements of rain resistance in new buildings in Sweden show that façades are usually not water-tight and also that very small deficiencies can cause substantial amount of water leakage. © 2017, © The Author(s) 2017.

  • 14006.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Results from laboratory of wind driven rain tightness in different types of facades2014Conference paper (Refereed)
  • 14007.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Slagregnstäthet hos fasader och vindskydd2014In: Bygg & Teknik, no 2, p. 32-36Article in journal (Other (popular science, discussion, etc.))
  • 14008.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Studie av kondensrisk i ett mekaniskt ventilerat golv2008Report (Refereed)
  • 14009.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Torrt träbyggande krävs2011In: Bygg & Teknik, Vol. 5, no 11, p. 16-17Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Det är vanligt att träkonstruktioner blir blöta under byggskedet i samband med regn och risken för mögelpåväxt är stor. Bättre konstruktionslösningar, regnsäkraa montagemetoder eller heltäckande väderskydd behövs. Luftfuktigheten ute är generellt sett inget problem vid prefabricerat trähusbyggande.

  • 14010.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Bygg och Mekanik.
    Typefterkontroll inom TSVs ansvarsområde1988Report (Refereed)
  • 14011.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Typgodkänd krypgrund håller fukten borta2011In: Husbyggaren, no 3, p. 24-27Article in journal (Other (popular science, discussion, etc.))
  • 14012.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Bygg och Mekanik.
    Utredning - transport av farligt gods1988Report (Refereed)
  • 14013.
    Olsson, Lars
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Är det risk för mögelpåväxt i välisolerade träregelväggar?2014In: Bygg & Teknik, no 5, p. 44-47Article in journal (Other (popular science, discussion, etc.))
  • 14014.
    Olsson, Lars
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Ehnlund, Anders
    Torra tak - Undersökning av oventilerat parallelltak med underlagstaksprodukten Tyvek Pro samt undersökning av cellulosaisoleringens fuktegenskaper2000Report (Refereed)
  • 14015.
    Olsson, Lars
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Gustavsson, Thorbjörn
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Certifiering inom energieffektivt byggande2009In: Bygg & Teknik, Vol. 2, no 9, p. 73-74Article in journal (Other (popular science, discussion, etc.))
  • 14016.
    Olsson, Lars
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Johansson, Pernilla
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Mjörnell, Kristina
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Moisture and mould in prefabricated timber fram constructions during production until enclosure of the house2011Conference paper (Other academic)
  • 14017.
    Olsson, Lars
    et al.
    RISE - Research Institutes of Sweden, Built Environment, Building Technology.
    Mjörnell, Kristina
    RISE - Research Institutes of Sweden.
    Väderskyddat byggande: - eller omfattande fukt- och mögelkontroll av fuktexponerat virke, konstruktioner och KL-trä?2017In: Bygg & Teknik, no 5, p. 4Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    När det gäller byggnadskonstruktioner så behöver allt fuktkänsligt byggmaterial skyddas mot förhöjd fuktighet och vatten. Görs inte detta så är risken stor bland annat för mikrobiell påväxt och byggnadsdelar behöver undersökas med avseende på fukt och mikrobiell påväxt.Anledningen till att det behöver undersökas med avseende på mikrobiell påväxt handlar inte bara om risken för hälsobesvär hos framtida brukare av byggnaden eller sanerings- och undersökningskostnader och utbyte av material och konstruktioner som följd av uppfuktning, utan även etik- och miljökonsekvensfrågor som blivit alltmer betydelsefullt i byggprojekt

  • 14018.
    Olsson, Lars
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Mjörnell, Kristina
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Johansson, Pernilla
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Kartläggning av fuktförhållanden vid prefabricerat trähusbyggande2010Report (Refereed)
  • 14019.
    Olsson, Lars
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Samuelson, Ingemar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi.
    Mjörnell, Kristina
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Det är inte bara fukten utan även marken som är problemet med krypgrunden.2015In: Bygg & teknik, no 7, p. 63-Article in journal (Other academic)
  • 14020.
    Olsson, Linda
    et al.
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Fallahi, Sara
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Schnurr, Maria
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Diener, Derek
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    van Loon, Patricia
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Circular Business Models for Extended EV Battery Life2018In: Batteries, ISSN 2313-0105, Vol. 4, no 4, article id 57Article in journal (Refereed)
    Abstract [en]

    In the near future, a large volume of electric vehicle (EV) batteries will reach their end-of-life in EVs. However, they may still retain capacity that could be used in a second life, e.g., for a second use in an EV, or for home electricity storage, thus becoming part of the circular economy instead of becoming waste. The aim of this paper is to explore second life of EV batteries to provide an understanding of how the battery value chain and related business models can become more circular. We apply qualitative research methods and draw on data from interviews and workshops with stakeholders, to identify barriers to and opportunities for second use of EV batteries. New business models are conceptualized, in which increased economic viability of second life and recycling and increased business opportunities for stakeholders may lead to reduced resource consumption. The results show that although several stakeholders see potential in second life, there are several barriers, many of which are of an organizational and cognitive nature. The paper concludes that actors along the battery value chain should set up new collaborations with other actors to be able to benefit from creating new business opportunities and developing new business models together.

  • 14021.
    Olsson, Magnus
    RISE, SP – Sveriges Tekniska Forskningsinstitut.
    Nationell kraftsamling TRANSPORT 20502013Report (Refereed)
  • 14022.
    Olsson, Marcus
    et al.
    Energiteknik (ET).
    Hellsmark, Hans
    Energiteknik (ET).
    Effektutvärdering av Produktionslyftet – Fas 1: 2007–2010.2012Report (Refereed)
  • 14023.
    Olsson, Marcus
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Hellsmark, Hans
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Systemanalys.
    Effektutvärdering av Produktionslyftet fas 12012Report (Refereed)
  • 14024. Olsson, Marcus
    et al.
    Lycken, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
    Nilsson, Daniel
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Horn, Henning
    A sawmill-adapted energy management system2014In: Proceedings of the 2014 eceee Industrial Summer Study, 2014Conference paper (Other academic)
  • 14025.
    Olsson, Marcus
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Lycken, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
    Nordman, Roger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Räftegård, Oskar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Andersson, Jan-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Förädling och processer (TRf).
    Wamming, Thomas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP Trä.
    Dokumentation till sågverksmodellen inom projekt EESI – Energi Effektivisering i SågverksIndustrin2011Report (Refereed)
  • 14026.
    Olsson, Marcus
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Nordman, Roger
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Taherzadeh, Mohammad
    Energiintegrerat etanolkombinat baserat på lignocellulosa: Jämförelse mellan svagsyrahydrolys och enzymhydrolys2011Report (Refereed)
    Abstract [sv]

    Plants for bioethanol production have been planned in several cities in Sweden, including Borås. This report provides answers to general questions regarding how such a facility's energy demand is affected by the external integration with a heat and power plant and the internal energy integration between process units. Heat integration of a bioethanol plant means that energy is reused as much as is technically possible; this sets a practical minimum level for the energy demand of the plant. In the study, ethanol production from cellulose has been simulated using Aspen Plus. Weak acid hydrolysis and enzymatic hydrolysis have been simulated, each with 50,000 and 100,000 tonnes of ethanol per year, resulting in four simulation cases. In all cases, heat integration is evaluated using pinch analysis. The steam in the ethanol plant has been covered by steam from a heat and power plant similar to that found today in Borås. The reported energy quotas in this report includes energy use for upgrading the residual products. This leads to lower energy quotas than would be the case if the upgrading of residuals were allocated outside of the ethanol production. The conclusions from the project are: - The steam demand of the ethanol plant leads to a reduction in both the electricity and heat production of the heat and power plant. For the weak acid hydrolysis, the electricity loss is relatively high, 26–98%, which will affect the revenue significantly. The loss of electricity production is lower for the enzymatic process: 11–47%. - The difference in decreased electricity between the theoretical case of heating the raw material and the two alternative heating cases is about a factor of two, so the design of the heating of raw material is extremely important. - The reduced heat output of the power plant can, in most cases, be balanced by the surplus heat from the ethanol plant, but to completely balance the shortage, heat over 100°C must be used. - For a future polygeneration plant it is important to consider local conditions, such as the external integration capabilities and the raw materials available. - The choice of process greatly affects the need for raw materials since the yields differ. The lower yield of the weak acid process means that 60% more material is needed compared with the enzymatic process. - To ensure that the process also works in a real plant, research and validation of experiments are needed in full scale facilities. - Energy ratios for the reported cases show that ethanol production from cellulosic raw material ranges from 1.27 to 3.24 for the weak acid process, depending on the choice of process integration alternative, and between 3.51 to 9.56 for the enzymatic process.

  • 14027.
    Olsson, Marcus
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
    Sárvári, Ilona
    Ekendahl, Susanne
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Brive, Lena
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Organisk kemi (Kmo).
    Luca Kovacs, Eva
    Söderberg, Peter
    Edberg, Ann
    Mikroskopiska alger som kombinerad koldioxidsänka och energikälla i Sverige2011Report (Other (popular science, discussion, etc.))
  • 14028.
    Olsson, Mats
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kalibrering och Verifiering.
    Andersson, Lennart
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    Gardehall, Jan-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik.
    NORDJUST-audit.1997Report (Refereed)
  • 14029.
    Olsson, Mats
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kalibrering och Verifiering.
    Månsson, Margret
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Organisk kemi (Kmo).
    Lundgren, Björn
    CFC i skumplast - Hur påvisa restförekomst från tillverkning?1989Report (Refereed)
  • 14030.
    Olsson, N.E.J.
    et al.
    Luleå University of Technology.
    Lundström, T.S.
    Luleå University of Technology.
    Olofsson, Kurt
    RISE, Swerea, Swerea SICOMP.
    Compression moulding of SMC: Coupling between the flow and the local void contents2009In: ICCM International Conferences on Composite MaterialsConference paper (Refereed)
    Abstract [en]

    During compression moulding of sheet moulding compound (SMC), voids are formed that can deteriorate the properties of the final product. Here, experimental work and CFD-simulations have been carried out in order to increase the knowledge of the SMC compression moulding behaviour which highly affects the quality of the final products. The experimental as well as the numerical results indicate that a high closure velocity creates a more uniform flow. The experimental results also indicate that a uniform flow also can be obtained at low velocities with vacuum assisted moulding.

  • 14031.
    Olsson, N.E.J.
    et al.
    Luleå University of Technology.
    Lundström, T.S.
    Luleå University of Technology.
    Olofsson, Kurt
    RISE, Swerea, Swerea SICOMP.
    Design of experiment study of compression moulding of SMC2009In: Plastics, rubber and composites, ISSN 1465-8011, E-ISSN 1743-2898, Vol. 38, p. 426-431Conference paper (Refereed)
    Abstract [en]

    The effect of vacuum assistance, mould temperature and ram velocity on the void transport and flow behaviour for sheet moulding compound (SMC) have been investigated with a design of experiment approach of the compression moulding phase. The relative amount of voids has been quantified with a high voltage insulation test and the flow behaviour has been quantified with image analysis of samples moulded with coloured SMC. In conclusion, the setting of high vacuum, low ram velocity and low mould temperature creates a homogeneous flow and minimises the amount of voids. © 2009 Institute of Materials, Minerals and Mining.

  • 14032.
    Olsson, O
    RISE, Swedish ICT, Viktoria.
    Slide-in Electric Road System, Conductive project report, Phase 12014Report (Other academic)
    Abstract [en]

    Electrifying vehicles is seen by many as a possible solution to reduce environmental emissions and the dependence on fossil fuel. Unfortunately, most environmentally friendly energy storage systems, such as batteries, have less energy density compared to fossil fuel, which will have a negative impact on the vehicle range. An alternative would be to continuously transfer energy from the road to the vehicle both for propulsion and charging. A development of an electrified road system (ERS) between cities would mean that most of the route could be driven on electricity from the road and the remaining distance can be driven on energy from potentially smaller batteries optimized for city routes.

    This is a first report in the Slide-in project where the final objective is to evaluate the technology to conductively transfer energy from the road to the vehicle based on cost, efficiency and feasibility.

    The project partners are: Volvo GTT, Scania CV, Alstom, Vattenfall, The Swedish Transport Administration, Projektengagemang (Svenska Elvägar AB), Lund University, KTH Royal Institute of Technology and Chalmers

  • 14033.
    Olsson, O
    RISE, Swedish ICT, Viktoria.
    Slide-in Electric Road System, Inductive project report, Phase 12013Report (Other academic)
    Abstract [en]

    Electrifying vehicles is seen by many as a possible solution to reduce environmental emissions and the dependence on fossil fuel. Unfortunately, most environmentally friendly energy storage systems, such as batteries, have less energy density compared to fossil fuel, which will have a negative impact on the vehicle range. An alternative would be to continuously transfer energy from the road to the vehicle both for propulsion and charging. A development of an electrified road system (ERS) between cities would mean that most of the route could be driven on electricity from the road and the remaining distance can be driven on energy from potentially smaller batteries optimized for city routes.

    This is a first report in the Slide-in project where the final objective is to evaluate the technology to inductively transfer energy from the road to the vehicle based on cost, efficiency and feasibility.

    The project partners are: Volvo GTT, Scania CV, Bombardier, Vattenfall, The Swedish Transport Administration, Projektengagemang (Svenska Elvägar AB), Lund University, KTH Royal Institute of Technology and Chalmers

  • 14034.
    Olsson, O
    et al.
    RISE, Swedish ICT, Viktoria.
    Alexandersson, E
    RISE, Swedish ICT, Viktoria.
    Hybridbussar med ström från spårvagnsnätet: Förstudie kring dynamisk energiöverföring för ökad elektrisk räckvidd2013Report (Other academic)
    Abstract [en]

    I expanderande städer innebär det stora utmaningar att skapa och tillhandahålla god mobilitet för samtliga grupper i samhället samtidigt som trängsel, luftemissioner och buller ska minimeras. Elfordon har, jämfört med förbränningsfordon, högre energieffektivitet samt kraftigt reducerade lokala utsläpp och kan därför underlätta vid ovannämnda utmaning. Dessvärre är energidensiteten i batterier relativt låg, jämfört med exempelvis diesel, och de batterier som skulle krävas för att motsvara ett konventionellt fordons räckvidd kan bli både dyra och tunga.

    Denna förstudie syftar till att undersöka möjligheterna och i största möjliga mån utreda oklarheter och krav för att utnyttja Göteborgs spårvagnsnät för kontinuerlig energiförsörjning även till hybridbussar och därmed minska behovet av energilagring i batterier.

    Rapporten utreder kraven på hybridbussen och på den nödvändiga tekniken för att ansluta till spårvagnsnätet utan att riskera säkerheten för passagerare eller spårvagnsnät. Vidare har energikapaciteten i spårvagnsnätet undersökts och linjer föreslagits där elektrifierade bussar med ström från spårvagnsnätet lämpligtvis skulle kunna demonstreras.

    Förstudien har genomförts i samarbete med Volvo Bussar, Trafikkontoret i Göteborg och Västtrafik. 

    Projektet har finansierats av Västra Götalandsregionen Regionutvecklingsnämnden.

  • 14035.
    Olsson, Olle
    RISE - Research Institutes of Sweden, ICT, SICS.
    Privacy protection and trust models2002In: ERCIM News, ISSN 0926-4981, E-ISSN 1564-0094, no 49Article in journal (Other (popular science, discussion, etc.))
    Abstract [en]

    The SAITS project, a cooperation between SICS, Stockholm University and others, will investigate technical aspects of privacy protection. Trust models is one of the techniques be evaluated.

  • 14036.
    Olsson, Olle
    RISE, Swedish ICT, SICS, Computer Systems Laboratory.
    Trust in eCommerce: the ontological status of trust2002Conference paper (Refereed)
    Abstract [en]

    The concept of trust has received a lot of attention in recent years, for a number of reasons. On the one hand, trust is seen as a necessary enabling precondition for B2C and other sensitive services on the web, and the problem of creating practical "trust on-line" is regarded as of high importance. On the other hand, the aforementioned reason has also spawned efforts on analysing the concept of trust at a more "philosophical" level. This paper presents an analysis of a logical kind, to effectively address the issue of why we actually need to represent trust explicitly at all. The conclusion is that in open communities the explicit trust representations may be communicated between members, and this will contribute to the privacy and security of these members.

  • 14037.
    Olsson, Olle
    et al.
    RISE - Research Institutes of Sweden, ICT, SICS.
    Espinoza, Fredrik
    RISE - Research Institutes of Sweden, ICT, SICS.
    Multimedia dialogue management in agent-based open service environments1999Conference paper (Refereed)
  • 14038.
    Olsson, Oscar
    et al.
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Faxer, Anne
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Collado, Magda
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Wedlin, Johan
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Pettersson, Stefan
    RISE - Research Institutes of Sweden, ICT, Viktoria.
    Lessons learned from electric cars in daily taxi operation in Gothenburg2017Conference paper (Refereed)
    Abstract [sv]

    Shared mobility solutions consisted of an electric bike pool, an electric car pool, and electric taxi servicewas assumed to enable similar mobility flexibilities as owning a car. The concept was tested in Gothenburgfor about a year in the local ELMOB project. This article focuses on the feasibility of the electric taxi aspart of the shared mobility package. Both customers’ and drivers’ perspective were studied regardingchanges in their behavior and fulfillment of their mobility needs. Data collected from the vehicles showvehicle performance, usage patterns and charging behavior of the drivers. The results imply that policy andregulations which favor electric taxis are crucial for enabling electric taxis at a larger scale

  • 14039.
    Olsson, Oscar
    et al.
    RISE, Swedish ICT, Viktoria.
    Grauers, Anders
    Chalmers University of Technology, Sweden.
    Pettersson, Stefan
    RISE, Swedish ICT, Viktoria.
    Method to analyze cost effectiveness of different electric bus systems2016In: EVS 2016 - 29th International Electric Vehicle Symposium, 2016, p. 604-615Conference paper (Refereed)
    Abstract [en]

    This paper presents a method developed to analyze a complete electric bus system including electricity supply infrastructure, charging system, buses' energy system and scheduling. This method can give an understanding of what kind of electric bus system that is the most cost-effective based on local conditions such as transport demand and type of electricity infrastructure available. It is being used as a tool in planning and construction of future public transport systems.

  • 14040.
    Olsson, Oscar
    et al.
    RISE, Swedish ICT, Viktoria.
    Olausson, Ellen
    RISE, Swedish ICT, Viktoria.
    Pettersson, Stefan
    RISE, Swedish ICT, Viktoria.
    Hybrid buses with continuous energy transfer from tram network2014Conference paper (Refereed)
    Abstract [en]

    Expanding cities need to cope with significant challenges to provide good mobility, while atthe same time minimizing congestion, emissions and noise. Compared to combustion vehicles,electric vehicles have higher energy efficiency, reduced local emissions and are quiet, and cantherefore ease the above challenges. Unfortunately, the energy density in batteries is relativelylow; therefore they would be both expensive and heavy to achieve a corresponding range ofconventional vehicles. This case study has therefore examined the possibilities, ambiguitiesand requirements for utilizing Gothenburg’s existing tram network as energy source foren-route charging of buses. A conceptual technical solution has furthermore been presented toenable the connection to the tram network. It is also recommended to implement smart controlof the vehicle’s energy consumption in order to optimize the network power utilizationwithout additional infrastructure investments.

  • 14041.
    Olsson, Oscar
    et al.
    RISE, Swedish ICT, Viktoria.
    Pettersson, S.
    Sebestyen, R.
    Poly segment monorail, a conductive method as an alternative for highway electrification2012In: World Electric Vehicle Journal, ISSN 2032-6653, E-ISSN 2032-6653, Vol. 5, no 3, p. 679-687Article in journal (Refereed)
    Abstract [en]

    Vehicles driven on alternative fuels, such as electric vehicles (EVs), are becoming more common while awareness of a diminishing oil supply, oil prices and environmental pollution are increasing. Despite technical breakthroughs, the low energy density in the battery is a problem that limits long distance travel, especially for heavy-duty vehicles (HDV). The low energy density combined with the high cost and the uncertain predictable lifetime of the battery could be estimated to hamper the expansion of the long distance EVs. Electrified highways connecting cities could be one solution to reduce the battery and fuel dependency by supplying electricity continuously to the vehicles. Different technical solutions of electric roads, both conductive and inductive, have been proven functional but are today mainly used in the tram and train industry. Despite the inductive system's major benefit of not relying on a physical contact, an inductive system is not necessarily the best option due to high costs and questionable efficiency. This said, also a conductive system intended for highway transport, despite the mature technology used, is far from problem free. This paper presents the new concept Poly segment monorail (PSM), intended to reduce the drawbacks of the general conductive system for highways. PSM utilizes segments alternating each other at road level, in contrast to traditionally being parallel and sometimes partially buried. With the new design and segments that are galvanically insulated, reduced losses and increase safety could be achieved. The paper also highlights the complexity for the new technology, involving several stakeholder markets, to achieve an international standard, which could be estimated a requirement for such a system to be beneficial and reasonable. © 2012 WEVA.

  • 14042.
    Olsson, P
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Svenska livmedelsinstitutet.
    Energianvändning i livsmedelsproduktion. en förstudie. STU-rapport1978Report (Refereed)
  • 14043.
    Olsson, P.
    SIK – Institutet för livsmedel och bioteknik.
    Livscykelanalys (LCA) ett hjälpmedel i miljöns tjänst.1998In: Kungliga Skogs- och Lantbruksakademiens Tidskrift, Vol. 137, no 5, p. 9-19Article in journal (Other academic)
  • 14044.
    Olsson, P J
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Svenska institutet för konserveringsforskning.
    The time-temperature tolerance of frozen foods1973Report (Refereed)
  • 14045.
    Olsson, P J
    SIK – Svenska institutet för konserveringsforskning.
    Time-temperature conditions in the freezer chain1972Report (Refereed)
  • 14046.
    Olsson, P
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Svenska livmedelsinstitutet.
    Larsson, F
    Ekman, G
    Improved economy and better quality in the distribution of chilled foods : Studier av kvalitetsförändringar och kostnadskonsekvenser vid olika distributionsalternativ avseende temperaturkänsliga produkter1990Report (Refereed)
  • 14047.
    Olsson, R.
    et al.
    Swedish Defence Res. Agency.
    Iwarsson, J.
    Swedish Defence Res. Agency.
    Melin, L.G.
    Swedish Defence Res. Agency.
    Sjögren, Anders
    RISE, Swerea, Swerea SICOMP.
    Solti, J.
    Swedish Defence Res. Agency.
    Experiments and analysis of laminates with artificial damage2003In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 63, no 2, p. 199-209Article in journal (Refereed)
    Abstract [en]

    Quasi-isotropic carbon/epoxy laminates with holes, polymer plugs and cut fibres are studied experimentally and analytically. Strain fields are measured using digital speckle photography. The results are used to validate an inverse method, where elastic properties of inclusions are determined by matching computed and measured displacements. Tensile and compressive strength is measured and the applicability of notch failure criteria to soft inclusions is examined. Available closed form solutions agree well with measured strains. The elastic properties predicted by the inverse method are in fairly good agreement with data from coupon tests although predictions are sensitive to measuring errors. The laminate toughness in compression was higher than in tension, as expected from the di.erent failure mechanisms (fibre kinking versus fibre tearing). Laminates with inclusions were tougher than laminates with holes, which may indicate that inclusions restrain in-plane fibre kinking. Higher toughness was reflected in larger characteristic lengths. © 2002 Elsevier Science Ltd. All rights reserved.

  • 14048.
    Olsson, Robin
    RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
    Analytical model for delamination growth during small mass impact on plates2010In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 47, no 21, p. 2884-2892Article in journal (Refereed)
    Abstract [en]

    An analytical model is presented for delamination initiation and growth and the resulting response during small mass impact on orthotropic laminated composite plates, which typically is caused by runway debris and other small objects. The solution is obtained by a fast stepwise numerical solution of a single integral equation. Delamination size, load and deflection history are predicted by extension of an earlier elastic impact model by the author. Good agreement is demonstrated in comparisons with finite element simulations and experiments. © 2010 Elsevier Ltd. All rights reserved.

  • 14049.
    Olsson, Robin
    RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
    Analytical model for small mass impact with delamination growth2009Conference paper (Refereed)
    Abstract [en]

    An analytical model is presented for small mass impact on orthotropic composite laminates with delamination growth, which typically is caused by runway debris and other small objects. Delamination size, load and deflection history are predicted by extension of an earlier elastic impact model by the author. Comparisons with finite element simulations and experiments are provided.

  • 14050.
    Olsson, Robin
    et al.
    RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
    Juntikka, Rickard
    RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
    Asp, Leif
    RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
    High velocity hail impact on composite laminates - Modelling and testing2013In: Solid Mechanics and its Applications, ISSN 9250042, Vol. 192, p. 393-426Article in journal (Refereed)
    Abstract [en]

    Hail impact on composite structures during flight occurs at high velocities and is a serious concern as it may cause matrix cracking, large internal delaminations, and eventually fibre fracture not visible on the impacted surface. The present paper gives an introduction to hail impact on composite laminates and an overviewof experiments andmodellingwork on this topic, performed during several years at Swerea SICOMP. Ice balls of different sizes and velocities have been shot with an air gun on composite laminates of different thickness and reinforcement architecture. High speed photography and measurement of strain and deflection histories of the laminates have been used to validate the models developed. Models involve dynamic explicit finite element (FE) simulations with cohesive elements to allow for delamination in the laminate, and simplified but fast analytical models. The experimental response has also been compared with predictions from the FE model and the analytical models using various material models of the ice. FE models using a calibrated elastic-plastic ice model are capable of accurately predicting the response and delamination initiation, while the current analytical models are unable to simulate the initial part of the impact. A main conclusion is that delamination occurs at a very early stage of the impact (first 10-50 μs) where three-dimensional wave propagation and the initial elastic-plastic behaviour of the ice are important. Closed form models are capable of predicting the peak contact stresses at the first instance of contact, but further work is required to allow simulation of the decay of contact stresses observed in the FE simulations. © Springer Science+Business Media Dordrecht 2013.

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