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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, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Institut Jean Lamour, SI2M, EEIGM 6 Rue Bastien Lepage, F-54010 Nancy.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-9649-8621
2014 (English)In: Composites Part B: Engineering, ISSN 1359-8368, E-ISSN 1879-1069, Vol. 64, p. 214-221Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
2014. Vol. 64, p. 214-221
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-11708DOI: 10.1016/j.compositesb.2014.04.023ISI: 000338407800024Scopus ID: 2-s2.0-84901250858Local ID: ab7b3341-7a90-4ee0-bc86-d8ff6dca2403OAI: oai:DiVA.org:ltu-11708DiVA, id: diva2:984658
Note
Validerad; 2014; 20140506 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Zrida, HanaMarklund, ErikVarna, Janis

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