Interlaminar stresses in a centrally notched composite laminate

Jen, Ming Hwa R.; Kau, Y.S.; Hsu, J.M.

doi:10.1016/0020-7683(93)90203-j

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…Tang [3] achieved the interlaminar stresses around a circular hole in composite plates. Jen et al investigated the interlaminar stresses at straight free edges [4] and around the centrally notched hole [5] in composite laminates. Vaidya et al first set up a failure criterion in notched thin laminates [6] and then studied the ply thickness effect on the criterion in notched composites [7].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties in Notched AS-4/PEEK APC-2 Composite Laminates at Elevated Temperature

Jen

Tseng

Chang

et al. 2006

Journal of Composite Materials

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The response of centrally notched AS-4/PEEK APC-2 composite laminates at elevated temperatures is investigated empirically and systematically. The failure mechanism and mechanical properties in notched cross-ply and quasi-isotropic laminates are perceived. First, the ultimate strength decreases seriously as the hole diameter increases, whereas the longitudinal stiffness changes irregularly. Next, combined with the effect of temperature elevation, the ultimate strength is accelerated to decay while the longitudinal stiffness is reduced slowly. Neglecting the increase in longitudinal stiffness, the worst case of both lay-ups as expected with the largest hole diameter and at the highest temperature still sustains at least 60% of ultimate strength. However, the reduction of strength in cross-ply laminates is more serious than that in quasi-isotropic laminates. Finally, a modified predictive model was proposed and found satisfactorily acceptable. It is also highlighted as a reliable, general, and simple model.

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