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Master curve approach to axial stiffness calculation for non-crimp fabric biaxial composites with out-of-plane waviness
Luleå University of Technology, Sweden.
RISE - Research Institutes of Sweden (2017-2019), Material och produktion, SICOMP. Luleå University of Technology, Sweden.ORCID-id: 0000-0003-3755-6419
Ecole Européenne D'Ingénieurs en Génie des Matériaux, France.
Luleå University of Technology, Sweden.
2014 (engelsk)Inngår i: Composites Part B: Engineering, ISSN 1359-8368, E-ISSN 1879-1069, Vol. 64, s. 214-221Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The effect of 0°-tow out-of-plane waviness on the biaxial non-crimp-fabric (NCF) composite axial stiffness is investigated. Homogenizing, the bundle mesostructure of the NCF composite is replaced by layers. Then the composite is represented by a laminate with flat layers with effective stiffness properties representing the curved 0°-layer and the 90°-layer with varying thickness. It is shown that the NCF composite knock-down factor characterizing the stiffness degradation has almost the same dependence on wave parameters as the knock-down factor for the curved 0°-layer. Numerical analysis showed that 90°-layer knock-down factor versus amplitude curves for different wavelength can be reduced to one master curve which can be described by a one-parameter expression with the parameter dependent on the used material. This observation is used to obtain high accuracy for analytical predictions for knock-down factors for cases with different wavelength and amplitudes based on two FE calculations only.

sted, utgiver, år, opplag, sider
Elsevier Ltd , 2014. Vol. 64, s. 214-221
Emneord [en]
A. Polymer-matrix composites (PMCs), A. Tow, B. Mechanical properties, C. Finite element analysis (FEA), C. Laminate mechanics
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Identifikatorer
URN: urn:nbn:se:ri:diva-13146DOI: 10.1016/j.compositesb.2014.04.023Scopus ID: 2-s2.0-84901250858OAI: oai:DiVA.org:ri-13146DiVA, id: diva2:973342
Tilgjengelig fra: 2016-09-22 Laget: 2016-09-22 Sist oppdatert: 2023-05-16bibliografisk kontrollert

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