Chennian Shi1, Wu Xu1,*
The International Conference on Computational & Experimental Engineering and Sciences, Vol.27, No.4, pp. 1-2, 2023, DOI:10.32604/icces.2023.09634
Abstract Accurate determination of the interlaminar mode II fracture toughness is much more difficult than that of
mode I delamination, due to friction and crack closure. In this paper, A-scan is used to measure the crack
growth length of end-loaded split (ELS) test through cyclic unloading and reloading. Interesting hysteresis
loops are observed in the experimental load-displacement curve, which has not been fully understood by
the existing literature. The frictional effect from the load fixture is analytically determined and numerically
validated. It absorbs considerable energy during the creation of new crack surface, but has been overlooked.
A simple method is proposed… More >
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