Translaminar mode-I fracture toughness experiment of pultruded GFRP laminates using extended compact tension specimen

被引：2

作者：

Xiong, Zhihua ^{[1
]}

Meng, Yang ^{[1
]}

Zhao, Chenyu ^{[1
]}

Liu, Yuqing ^{[2
]}

机构：

[1] Northwest A&F Univ, Coll Water Resources & Architectural Engn, Taicheng Rd 3, Yangling 712100, Shaanxi, Peoples R China

[2] Tongji Univ, Dept Bridge Engn, Shanghai, Peoples R China

来源：

JOURNAL OF COMPOSITE MATERIALS | 2022年 / 56卷 / 17期

基金：

中国国家自然科学基金;

关键词：

fracture toughness; pultruded GFRP; composite; experiment; fiber volume ratio; STRENGTH; BEHAVIOR; COMPOSITES;

D O I：

10.1177/00219983221104243

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This paper conducted experiments and theoretic analysis of the fracture performance of pultruded GFRP (Glass Fiber Reinforced Polymers) laminates. The mode-I fracture toughness of pultruded GFRP laminates was evaluated by the eccentrically loaded, Extended Compact Tension (ECT) specimen. The geometry of specimen and experimental procedure refer to ASTM E1922. A total of 16 specimens were tested, which included 0 degrees and 90 degrees roving orientation. Finite element analysis with the Virtual Crack Closure Technique (VCCT) was implemented to calibrate the experimental results. A correction function for normalized notch length was proposed for pultruded GFRP translaminar fracture toughness. Carpet plot was designed to discuss the relationship between fiber volume ratio and fracture toughness, which demonstrated that the fracture toughness strongly correlated with the fiber volume ratio. Also, the effect of fraction of 0 degrees layers on fracture toughness and material orthotropy was studied. The relationship of material orthotropy parameter and fracture toughness was discussed.

引用

页码：2713 / 2725

页数：13