Browsing by Author "Wang, Huan"

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    Hygrothermal effects on translaminar fracture toughness of quasi-isotropic laminates with different stacking sequences
    (Elsevier, 2023-12-14) Gong, Bowen; Ge, Yuzhong; Wang, Huan; Peng, Hua-Xin; Wisnom, Michael R.; Xu, Xiaodong
    Hygrothermal effects on the translaminar fracture toughness of the carbon/epoxy composite with two different stacking sequences at 120 °C were studied and the failure mechanisms are explained. The eccentrically loaded single-edge-notch tension (ESET) experiments showed that two different quasi-isotropic stacking sequences ([90/45/0/-45]4s and [45/90/-45/0]4s) have negligible difference in translaminar fracture toughness. It was found that the fracture toughness of conditioned specimens at hot temperature wet (HTW) condition increased by 75 % compared to that at room temperature dry (RTD). The average saturated damage height at HTW increased by 48 % compared with that at RTD according to ex situ X-ray computed tomography (CT) observation. The larger saturated damage height observed in the 0° plies of the HTW specimens results in the higher translaminar fracture toughness.