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  • 1.
    Andersson, Magnus
    et al.
    RISE Research Institutes of Sweden, Digital Systems, Mobility and Systems.
    Rylander, David
    RISE Research Institutes of Sweden, Digital Systems, Mobility and Systems.
    Wicked Cases and Late Binding in System of Systems2022In: 2022 17th Annual System of Systems Engineering Conference, SOSE 2022, Institute of Electrical and Electronics Engineers Inc. , 2022, p. 354-359Conference paper (Refereed)
    Abstract [en]

    Systems of Systems is being applied in ever more complex contexts. This paper reports findings from a city logistics initiative. As many other environmental challenges, this setting can be characterized as 'wicked', e.g. the organizations that need to be involved solving the issues are contributing causes and there is no obvious single authority able to make decisions. Our findings suggest that such settings lead to vagueness and 'late binding' of key actors and incentives making the early modelling phases highly challenging. Supplementing the wave model of SoS development, we describe specific coping mechanisms for such settings including designing for multiple SoS archetypes and identifying and prioritizing archetype-generic capabilities. 

  • 2.
    Blomqvist, Urban
    et al.
    RISE - Research Institutes of Sweden, Safety and Transport, Electronics.
    Flink, Kristian
    RISE - Research Institutes of Sweden, Safety and Transport, Electronics.
    Maskinstyrningar i praktiken2018Report (Other academic)
    Abstract [en]

    The European Machinery directive gives the requirements for safe machinery, and safe machine control, within the European Union. This report explains some of the requirements, especially for safety-related machine control systems. Practical examples with aspects on machine control are given in annexes to the report.

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  • 3.
    Dominic, Chris
    RISE, Innventia.
    Supply and demand chain integration:: A case study conducted in the packaging industry2013In: Packaging technology & science, ISSN 0894-3214, E-ISSN 1099-1522, no 1, p. 51-63Article in journal (Refereed)
    Abstract [en]

    The purpose of this work was to study the packaging supplier and the integration of integrating packaging suppliers into the supply and demand chain (SDC). The packaging industry has been analyzed using a structured market analysis, and the companies studied have been positioned in an integration model for packaging suppliers. In addition, case studies were conducted to study the development of the packaging industry and its integration within the SDC in the Scandinavian region. The analysis shows that there are gaps in the business relations between the packaging companies studied and the SDC. Most of the packaging suppliers were not integrated into the SDC. Valuable information, available in the network, seldom reaches the packaging supplier who holds the knowledge necessary to create and offer innovative packaging solutions. The article provides an empirical exploration into the field of packaging, logistics and SDC integration and an original conceptual framework that could serve as a theoretical framework for future research work applied in the packaging industry and an interesting business model to the increase understanding of packaging supply chain integration.

  • 4.
    Fallahi, Sara
    RISE - Research Institutes of Sweden (2017-2019), ICT, Viktoria. Chalmers, Technology Management and Economics, Entrepreneurship and Strategy.
    A Process View of Business Model Innovation2017Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    In an era of globalization, cross-fertilization of technologies and industries, and changing markets, firms are introducing new ways of creating or capturing value through Business Model Innovations (BMI). In recent years, BMI has become one of the priorities of practitioners, and has attracted the interest of scholars since product or process innovations on their own are perceived insufficient in the current internet era when other sources of competitive advantage are being needed. However, BMI can be difficult to manage for many firms, and despite increasing debate in the field, there is a lack of understanding about how BMI processes unfold. The purpose of this thesis is to explore BMI processes in multiple industrial and organizational contexts. To achieve this, the thesis is based on four papers written during the course of this PhD research which draw on empirical studies of diverse industries such as manufacturing, automotive, construction, publishing, and home furnishing. The firms studied in this thesis are new ventures developing new Business Models (BMs), Small and Medium-sized Enterprises (SMEs), and multinational corporations that have been working with BMI, either in parallel or as a substitute to their existing BMs. The empirical observations support the distinction of two approaches to BMI: purposeful and unintentional. Purposeful BMI tends to be planned and starts with attentive cognitive search for a new BM, including recursive conceptualization, creation and offline evaluation of alternative BMs. The process is followed by experiential learning and adaptation of the new BM. Unintentional BMI refers to the emergence of a new BM as an outcome of the resolution of one or a number of major BM problems, to support other innovation activities. Thus, unintentional BMI processes take off from existing BMs and are characterized by a sequence of major problem formulation and solving which are orchestrated by shifts between experiential and cognitive search for solutions. My observations suggest that the antecedents to BMI may explain why in some cases, BMIs emerge unintentionally and in others firms embark purposefully on BMI. I discuss organizational implementation of BMIs in relation to how firms decide about the degree of separation and integration between parallel BMs. It is argued that the decision about how to structure parallel BMs cannot be made ex ante but emerges through the process of search for a new BM.   The contributions of this thesis are threefold; First it contributes to the emerging conceptualizations of BMI processes by explaining how BMI processes unfold in the two distinct spaces of ‘new BM design’ and ‘existing BM transformation’. Second, the thesis contributes to the BMI literature by introducing problem as a mechanism and theoretical construct for understanding BMI processes in established firms. While the prior literature emphasizes patterns of shift between cognitive search and experiential learning when firms search for a new BM, they do not explain under what circumstances firms embark on either mode of search. Using the problem as the unit of analysis provides an important theoretical basis for conceptualizing the dynamics of the BM by understanding sequential shifts between the two modes of learning along the BMI process. Third, the thesis contributes to the growing debates on how to organize parallel BMs by showing that what is to be separated between the BMs depends on the specific context of the firm. Prior to answering the question of how separated parallel BMs should be, firms need to make sure that they have a viable BM and understand how it operates.

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  • 5.
    Gretarsson, Snaevar
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Lindell, Hans
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Nonlinear Tuned Vibration Absorber on Reciprocating Tools2018In: Proceedings of the 7th American Conference on Human Vibration 2018 / [ed] Peter W. Johnson, 2018, p. 27-28Conference paper (Other academic)
  • 6.
    Karpenja, Tatjana
    et al.
    RISE, Innventia.
    Lorentzon, Ann
    RISE, Innventia.
    Wickholm, Kristina
    RISE, Innventia.
    Sustainability aspects in waste management of biocomposites2013Conference paper (Refereed)
  • 7.
    Lejon, Marcus
    et al.
    Chalmers University of Technology, Sweden.
    Gronstedt, Tomas
    Chalmers University of Technology, Sweden.
    Glodic, Nenad
    KTH Royal Institute of Technology, Sweden.
    Petrie-Repar, Paul
    KTH Royal Institute of Technology, Sweden.
    Genrup, Magnus
    Lund University, Sweden.
    Mann, Alexander
    RISE - Research Institutes of Sweden, Swerea, Swerea IVF.
    Multidisciplinary design of a three stage high speed booster2017In: Proceedings of the ASME Turbo Expo, Vol. 2B-2017Article in journal (Refereed)
    Abstract [en]

    The paper describes a multidisciplinary conceptual design of an axial compressor, targeting a three stage, high speed, high efficiency booster with a design pressure ratio of 2.8. The paper is outlined in a step wise manner starting from basic aircraft and engine thrust requirements, establishing the definition of the high speed booster interface points and its location in the engine. Thereafter, the aerodynamic 1D/2D design is carried out using the commercial throughflow tool SC90C. A number of design aspects are described, and the steps necessary to arrive at the final design are outlined. The SC90C based design is then carried over to a CFD based conceptual design tool AxCent, in which a first profiling is carried out based on a multiple circular arc blade definition. The design obtained at this point is referred to as the VINK compressor. The first stage of the compressor is then optimized using an in-house optimization tool, where the objective functions are evaluated from detailed CFD calculations. The design is improved in terms of efficiency and in terms of meeting the design criteria put on the stage in the earlier design phases. Finally, some aeromechanical design aspects of the first stage are considered. The geometry and inlet boundary conditions of the compressor are shared with the turbomachinery community on a public server. This is intended to be used as a test case for further optimization and analysis. 

  • 8.
    Lindell, Hans
    RISE - Research Institutes of Sweden, Swerea, Swerea IVF.
    Hand-Held Impact Machines with Nonlinear Tuned Vibration Absorber2015Conference paper (Other academic)
  • 9.
    Lindell, Hans
    RISE - Research Institutes of Sweden, Materials and Production, IVF.
    High Frequency Vibration: Measurement, Effects on Biologic Tissue and Risk Assessment2018In: Proceedings of the 7thAmerican Conference on Human Vibration 2018 / [ed] Peter W. Johnson, 2018, p. 18-19Conference paper (Other academic)
  • 10.
    Lindell, Hans
    RISE - Research Institutes of Sweden, Materials and Production, IVF.
    Nonlinear Dynamic Vibration Absorber to Reduce Vibration in Hand Held Impact Machines2015In: ICoEV 2015: IFTOMM International Conference on Engineering Vibration 2015, 2015, p. 1530-1539Conference paper (Refereed)
  • 11.
    Lindell, Hans
    RISE - Research Institutes of Sweden, Swerea, Swerea IVF.
    Transient Vibrations from Impact Machines - Its relation to ISO 5349 and wave propagation in Human Tissue, ISO 5349 Standardization Workshop2015In: Proceedings of the 13th Int. Conf. on Hand-Arm Vibrations, 2015Conference paper (Other academic)
  • 12.
    Lindell, Hans
    RISE - Research Institutes of Sweden, Swerea, Swerea IVF.
    Zero Vibration Injuries – A Swedish Holistic Approach Fighting Vibration Injuries2015Conference paper (Other academic)
  • 13.
    Lindell, Hans
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Gretarsson, Snaevar
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Machens, Michael
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    High frequency shock vibrations and implications of ISO 5349: Measurement of vibration, simulating pressure propagation, risk assessment and preventive measures2017In: IFA Report 5/2017e: Review of the International Expert Workshop 2015 in Beijing, 2017, p. 19-30Conference paper (Refereed)
  • 14.
    Rydberg, Anna
    RISE Research Institutes of Sweden, Bioeconomy and Health, Agriculture and Food.
    Process för bred analys av kunskapsbehov inom jordbruket2021Report (Other academic)
    Abstract [en]

    Process to identify and prioritise farmers knowledge needs for the Swedish agriculture. Several studies have pointed out gaps and shortcomings in the knowledge chain in Swedish agriculture (Swedish Board of Agriculture 2019, OECD 2018). Two questions that have been raised are whether the research has focused on the knowledge needs farmers really have and how the cooperation among the actors along the knowledge chain works. The goal of this pilot project was to develop and test, in a small scale, a process to identify and classify knowledge needs of Swedish farmers, in collaboration with key stakeholders along the knowledge chain in the agricultural sector. The long-term goal is to scale up the process to a national level to assess farmers needs in Swedish agriculture. The purpose is to highlight what knowledge farmers request all over Sweden and to provide input to the prioritization of research and development funds. The project was carried out during the Cov-19 pandemic 2020-2021, which limited the possibility of physical meetings, and all meetings were therefore digital. Four digital workshops were conducted in slightly different ways, with farmers representing two geographical areas. Each workshop had a unique set-up of participating farmers. At the workshops, the farmers discussed and prioritized their various knowledge needs. The material from the workshops was compiled into categories and sent out for feedback to various experts, in the broad sense. The experts classified the needs according to what knowledge is already available and whether this knowledge is easily accessible. They were also asked to rank their top three most important knowledge needs for each category. A process to capture, classify and prioritise farmers' knowledge needs is presented and tested in this study. This process captures farmers' knowledge needs in a broad sense and is favourably to be used as a complement to knowledge gaps identified by specialised interest groups, such as trade associations or sector-specific centres, to provide a comprehensive picture of farmers' knowledge needs. By collaboratively highlighting and discussing farmers' knowledge needs in a broader context, the process has potential to increase cooperation and knowledge exchange between the actors in the agricultural knowledge chain.

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  • 15.
    Rättö, Peter
    et al.
    RISE, Innventia.
    Trost, Thomas
    RISE, Innventia.
    Blohm, Erik
    RISE, Innventia.
    Wear of packaging during transport simulation2012Conference paper (Refereed)
  • 16.
    Sandberg, Karin
    et al.
    RISE Research Institutes of Sweden, Built Environment, Building and Real Estate.
    Serrano, Erik
    Luleå University of Technology, Sweden.
    Sundqvist, Bror
    Luleå University of Technology, Sweden.
    Henriksson, Fredrik
    Linköpings University, Sweden.
    IPOS - Innovations in wood-based building materials and products2021Report (Other academic)
    Abstract [en]

    IPOS Swedish wood- Innovation POtential for the biobased Society, is a coordination project within Bioinnovation Construction & Design. The coordination project IPOS has been led by Karin Sandberg RISE Research Institutes of Sweden. This report consists of results from four subprojects (SP) within IPOS compiled by the project leaders. Innovations and development of new wood-based products to increase the value of the raw material have been in focus in the four subprojects. Common for the subprojects are the effort for developing new materials, processes, products and manufacturing methods as well as market and product development DeProtion -Design, Product development & Communication (SP1) The purpose has been to collaboratively develop a general innovative product development model that supports the wood industry's development of products with value-adding design and/or with the support of design automation. Compiled by Fredrik Henriksson, Linköping University in chapter 2. Demand driven finishing of Swedish wood (SP2) The purpose has been to ensure efficient processes that can deliver the right wood material for continued processing within the value chains for industrial wood construction, as well as exterior and interior carpentry products. Compiled by Bror Sundqvist Luleå University of Technology in chapter 3. The Facade of the city Swift, Stylish, Smart (SP3) The purpose has been to increase the market for wooden facades and therefore develop a concept for an attractive functional facade system of pine adapted for urban environment with regards to design, fire, competitive cost and environmental profile. Compiled by Karin Sandberg Research Institutes of Sweden in chapter 4. Outdoor load-bearing timber structures (SP4) The purpose has been to extend the scope of chemically modified wood (acetylation) for load-bearing outdoor structures and Scandinavian wood species, pine and birch. Compiled by Erik Serrano, Lund University in chapter 5. In all sub-projects work has aimed at developing new materials, processes and products and at the same time taking into account market- and communication aspects. The sub-projects have in various ways developed and improved products made from Swedish wood species, primarily Scots pine and spruce, but also birch. Through collaboration, via IPOS, the sharing of knowledge between the projects has contributed to strengthening the wood value chain more than the individual projects could have done. The main conclusions are below summarized under the three headings “Renewal for the pine market”, Development of innovative products” and “New businesses and markets”.

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  • 17.
    Sehlstedt-Persson, Margot
    et al.
    Luleå Technical University, Sweden.
    Hansson, Lars
    Luleå Technical University, Sweden.
    Couceiro, José
    Luleå Technical University, Sweden.
    Vikberg, Tommy
    RISE - Research Institutes of Sweden, Bioeconomy, Biobased Materials.
    Konditionering av virke vid olika fuktkvoter: studier i tomograf2019Report (Other academic)
    Abstract [sv]

    Fuktförändringar i virke under pågående konditionering har aldrig tidigare studerats i tomograf.

    Resultat av denna labbstudie av diffusionsbaserad, icke-kondenserande jämviktskonditionering vid olika fuktkvotsnivåer sammanfattas enligt följande: (Notera att torkningsspänningar inte utvärde­rats i denna studie utan enbart fuktförändringar.)

    • Studien styrker industriella erfarenheter att konditionering ”tar bättre” på virke nedtorkat till lägre fuktkvot jämfört än om fuktkvoterna är högre.
    • Försöken ger en god fingervisning om hur länge konditionering bör pågå för en viss önskad medel­fuktkvotshöjning i ett industriellt vanligt förekommande klimat 70 °C och psykrometer­skillnad 2° vilket motsvarar en jämviktsfuktkvot på 16,8%. Vill man ex höja medelfuktkvoten från 10 – 12% visar resultaten att 4 timmars konditionering är tillräckligt för furuvirket. Att i samma klimat höja medel­fuktkvoten 2% vid högre startfuktkvoter (mellan 14–23%) har inte i något fall varit möjligt för vare sig gran eller furu under de 8 timmar som konditionering pågick. Det är också viktigt att påpeka att konditioneringsklimatet i dessa labbförsök har uppnått börvärden mycket snabbt (figur 3) vilket inte är fallet vid stora virkeslaster i industriskala där basningskapacitet och blåsdjup påverkar tid till uppnådda börvärden.
    • Vad gäller fuktkvotsskillnad nära ytorna ses generellt en utplaning av fuktförändringar i samtliga försök efter 3–4 timmar.
    • Fuktkvotsnivån spelar roll för den inledande fuktkvotsförändringen inom tvärsnittet: ju torrare virke desto snabbare förändring.
    • När konditioneringen startar är fuktvandringen i splintved effektivare än i kärnved vilket sannolikt förklaras av splintvedens högre diffusivitet.
    • Vad gäller eventuella skillnad mellan träslag är det inte möjligt att dra några slutsatser.
    • Metodstudien visar att upplösningen i tomografen är tillräcklig för att kunna utvärdera fuktkvotsförändringar nära virkesytorna i ca 3 mm tjocka skal.
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  • 18.
    Sehlstedt-Persson, Margot
    et al.
    Luleå Technical University, Sweden.
    Vikberg, Tommy
    RISE - Research Institutes of Sweden, Bioeconomy, Biobased Materials.
    Utveckling av industriell virkestorkning: Slutrapport2019Report (Other academic)
    Abstract [sv]

    Projektet har behandlat ett antal delstudier kopplat till virkestorkning inom följande områden : ADAPTIVITET, FUKT­DYNAMIK och TORKNINGSKVALITET. Projektet har bidragit till att steg har tagits mot målet att uppnå en mer självstyrande och automatiserad torkningsprocess, en mer optimerad och energieffektiv torkningsprocess samt bättre och jämnare torkningskvalitet som samman­taget minskar torkkostnader genom att:

    ADAPTIVITET identifiera olika mättekniska- och återkopplade signaler som kan användas i simulatorer och styrsystem: ”ΔT” principens möjlighet att adaptivt förlänga dragtider i en FB-kanal, termograferingens diagnostiska möjlighet att få en momentan överblick över rumslig fukt­kvots­spridning i en torkande virkeslast samt difftrycksmätningens potential att signalera rengöringsbehov för att undvika försämrad lufthastighet och värmeöverföring i en kanal.

    FUKTDYNAMIK öka förståelsen för virkets fuktdynamik genom att i tomografstudier visa på möjligheten att optimera diffusionsdriven jämviktskonditionering vid olika fuktkvotsnivåer och på så sätt effektivisera tid och energianvändning i torkar. Fuktförändringar under pågående kondi­tio­nering har aldrig tidigare studerats i tomograf.

    i tomografstudier visa hur övergången mellan kapillär och diffusionsfas genom  ΔT tydligt kan identifieras

    genom CT-studier ge ökad förståelse och förbättrat underlag för fuktdynamisk modellering i kapillär och diffusionsfas.

    TORKNINGSKVALITET förbättra torkningskvalitet genom bättre målfuktkvotsträff och mindre fuktkvotsspridning genom de ovan nämnda adaptiva metodernas potential.

    visa att en kombination av torkning med efterföljande hyvling och behandling med mögel­hämmare kan åstadkomma en produktgrupp av splintvedsbrädor av furu, contorta och gran med god och likvärdig mögelbeständighet.

    Studierna som avrapporteras övergripande i denna rapport har utförts inom delprojekt 3 inom ramen för projektet ”TiiN, TräInnovation i Norr”.

    Samtliga delstudier avrapporteras separat i följande TCN- rapporter.

    TCN-rapport: Temperaturdifferens ”ΔT” mellan virkesyta och luft under pågående torkning som möjlig styrparameter i virkestorkning. Mätningar i labb och industriskala. Margot Sehlstedt-Persson, LTU, Tommy Vikberg, RISE, Gerhard Scheepers, RISE.

     

    TCN-rapport: Värmekameramätningar i virkestorkar. Gerhard Scheepers, RISE.

     

    TCN-rapport: Mögeltest av torkade furu, gran och contorta bräder: Sammanfattning av “Mould susceptibility of dried boards of Contorta pine, Scots pine and Norway spruce A comparative study” Faksawat Poohphajai, februari 2018. Margot Sehlstedt-Persson, LTU.

     

    TCN-rapport: Konditionering av virke vid olika fuktkvoter – studier i tomograf. Margot Sehlstedt-Persson, Lars Hansson, José Couceiro samtliga LTU, Tommy Vikberg RISE.

     

    TCN-rapport: Tryckfall över värmebatteri i virkestork - resultat av tre års mätningar. Tommy Vikberg, RISE och Margot Sehlstedt-Persson, LTU. 

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  • 19.
    Sehlstedt-Persson, Margot
    et al.
    Luleå Technical University, Sweden.
    Vikberg, Tommy
    RISE - Research Institutes of Sweden, Bioeconomy, Biobased Materials.
    Scheepers, Gerhard
    RISE - Research Institutes of Sweden, Bioeconomy, Biobased Materials.
    Temperaturdifferens ”ΔT” mellan virkesyta och luft under pågående torkning som möjlig styrparameter i virkestorkning.: Mätningar i labb och industriskala.2019Report (Other academic)
    Abstract [sv]

    Målsättningen med denna studie har varit att utvärdera frågeställningen om tempe­ratur­differensen mellan lufttemperatur och virkesyta (ΔT), kan användas adaptivt i en FB kanal för att detektera övergång från torkning i kapillär till diffusionsfas. Man eftersträvar att så mycket kapillärt vatten som möjligt ska avgå i zon 1 innan virket går in i zon 2 för att inte fuktkvoten ska bli för hög i uttagsänden.

    Inledningsvis utfördes ett antal grundläggande försök i labbmiljö följt av en mer omfattande mätning i industriskala vid J-G Anderssons i Linneryd. Vid Linneryds­försöket gjorde även termografimätningar. Slutligen gjordes ett långtidsförsök vid Norra Timbers anläggning i Kåge med beröringsfri IR-sensor för mätning av yttemperatur på långsidorna av passerande virkestaplar.

    Slutsatser av grundläggande försök i CT-lab

    Utvärderingen av försök på enbitsnivå pekar mot att ΔT signalen har god potential att kunna användas för att detektera när fibermättnad nås i virket. I kanaler med stora virkeslaster med varierande fuktinnehåll måste dock yttemperaturmätningar göras på medelvärden av större ytor. Nästa steg var industriella mätningar i kanal där dock ingen kontinuerlig fukt­kvots­bestäm­ning var möjlig att göra.

    Slutsatser av industrimätningar i Linneryd

    Mätningar av virkets yttemperatur, lokalt torkklimat, lufthastighet, fuktkvot och ΔT i prover placerade i olika positioner i en virkesstapel med 22x100 mm granbräder under torkning i en 2 zons FB kanal, visar överensstämmande resultat.  Nivåerna på ΔT i nedblåsningsschaktet visar tydligt om proven var kvar i kapillärfas eller inte. Höga nivåer på ΔT som i centrala de­lar­na av paketen i höjdled  innebär att proverna fortfa­rande var i kapillärfas. Låga nivåer på  ΔT, som på kanterna av mittpaketet, innebär att kapillär­fasen har passerats. I positioner där slutfuktkvot blev  betydligt högre än målfuktkvot (centrum i toppaket) var ΔT nivån hög i ned­blås­ningsschaktet. Detta virke skulle med fördel ha haft längre tid i zon 1. Virket på kan­terna var redo för övergång till zon 2. I praktiken görs dock naturligtvis drag­ningar för en hel stapel i taget.

     

    Termografibilderna ger en ögonblicksbild av torkningsläget i en virkelast och har potential att vara ett komplement till befintliga mätmetoder. Industrimätningarna visar att det är möjligt att ta bra värmebilder i nedblåsningsschaktet i en FB kanal. Att ha en permanent värmekamera i nedblåsningsschaktet ställer dock krav på kylning av kameran som inte klarar höga tempe­raturer.

    Slutsatser från långtidsförsök vid Norra Timbers anläggning i Kåge

    Två pyrometrar riktade att mäta yttemperatur på de två översta paketen på passerande vagnar installerades i en gångdörr vid nedblåsningsschaktet i en FB kanal. Beräknat ΔT tycks kunna utgöra värdefull processdata för att styra torkens dragningstid.

    Yttemperaturmätningar med pyrometer är en relativt robust metod som fungerar bra i en virkestork. Ingen rengöring behövdes under de fyra månaderna som mätningen pågick.

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  • 20.
    Svenningsson, Roger
    et al.
    RISE, Swerea, SWECAST.
    Lisell, Ralf
    RISE, Swerea, SWECAST.
    Simulering av kärnskjutning2013Report (Other academic)
    Abstract [sv]

    Detta arbete behandlar möjligheterna med kärnsimulering, främst i den generella CFD-koden Flow-3D men även i Arena Flow, ett kommersiellt kärnsimuleringsprogram. Experiment och simuleringar utförda med två olika kärnlådor visar att det idag finns möjligheter att simulera kärntillverkningsprocessen, även om det krävs mer och bättre indata för att kunna göra det tillförlitligt. Resultaten visar vikten av att ha rätt indata, rätt kalibrering och att verifiera resultaten med uppföljande fysiska tester. Vid dessa försök gick det inte att använda samma indata för olika ventilkonfigurationer för kärnlådan ”svanhalsen” och erhålla överensstämmande resultat mellan simulering och experiment. Detta betyder att ytterligare kalibrering är nödvändig. Fler tester måste genomföras, dels med andra geometrier men också med andra typer av sand och bindemedel. Vidare är det viktigt att utveckla metoder för att mäta (eller åtminstone uppskatta) sandens benägenhet att flyta samt möjligheter att mäta lokal ”packningsgrad” för verifiering av simuleringarna.

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    fulltext
  • 21.
    Troell, Eva
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF, Tillverkningsprocesser.
    Lindell, Hans
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Gretarsson, Snaevar
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF, Tillverkningsprocesser.
    Zero Vibration Injuries: Achieved by Machine Redesign2018In: Proceedings of the 7thAmerican Conference on Human Vibration 2018 / [ed] Peter W. Johnson, 2018, p. 7-8Conference paper (Other academic)
  • 22.
    Trost, Thomas
    et al.
    RISE, Innventia.
    Rättö, Peter
    RISE, Innventia.
    Blohm, Erik
    RISE, Innventia.
    Packaging wear during transport simulation: comparison between laboratory coated samples and commercial samples2013Conference paper (Refereed)
  • 23.
    Vikberg, Tommy
    et al.
    RISE - Research Institutes of Sweden, Bioeconomy, Biobased Materials.
    Sehlstedt-Persson, Margot
    Luleå Technical University, Sweden.
    Tryckfall över värmebatteri i virkestork: resultat av tre års mätningar. Slutrapport.2019Report (Other academic)
    Abstract [sv]

    Möjligheterna att utföra behovsstyrt underhåll på virkestorkar istället för enligt ett underhållschema vore önskvärt. En av underhållsåtgärderna som är svåra att schemalägga i tiden är rengöring av värmebatterierna eftersom graden av nedsmutsning i stor del beror på råvaran, utomhusklimatet och sågutrustningen. I detta projekt mättes det statiska tryckfallet över värmebatteriet i 1:a-zon i en två zons kanaltork. Mätningen pågick under tre års tid och målet var att få till stånd en mätning som indikerar när det är dags att rengöra värmebatteriet. Projektets slutsatser är:

    • Det är möjligt att mäta graden av spånpålimning på värmebatterierna genom att mäta tryckfallet över värmebatteriet.
    • Tryckfallsmätning kan tjäna som indikator för när det är lämpligt att rengöra värmebatteriet.
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    FULLTEXT01
  • 24.
    Zimmerman, Jordan
    et al.
    Medical College of Wisconsin, USA.
    Bain, James
    Medical College of Wisconsin, USA.
    Wu, Chaowen
    Medical College of Wisconsin, USA.
    Lindell, Hans
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Gretarsson, Snaevar
    RISE - Research Institutes of Sweden (2017-2019), Materials and Production, IVF.
    Riley, Danny
    Medical College of Wisconsin, USA.
    Five Week Riveting Hammer Vibration: Rat Tail Sensory Nerves2018In: Proceedings of the 7th American Conference on Human Vibration 2018 / [ed] Peter W. Johnson, 2018, p. 20-21Conference paper (Other academic)
1 - 24 of 24
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