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How would one go about characterising the stiffnesses of CFRP laid up to act as a compliant material?

Question asked by Shailin Moodley in #Debates on Oct 12, 2020
Shailin Moodley
Shailin Moodley · Oct 12, 2020
Rank E2 - BEGINNER

CFRP is traditionally a highly stiff material but by aligning the fibres and reducing the matrix quantity, one can enable deformation in specific directions. What is the best way to characterise the stiffnesses of the laid up material and, thereafter, the built up wing? 

Posted in: #Debates
Ramani Aswath
Ramani Aswath · Oct 13, 2020
Rank A1 - PRO

Fibre reinforced composites are complex materials that are difficult to analyse for mechanical behaviour especially in cyclic loading and varying temperatures. However, some studies have been done for producing materials with predictable behaviour with regards to mechanical properties such as stiffness.

This paper may give some pointers:

https://spiral.imperial.ac.uk/bitstream/10044/1/18769/2/Comp%20Sci%20Tech%20paper_final%20final%20version.docx


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