Effect of porosity and crystallinity on mechanical properties of laser in-situ consolidation thermoplastic composites

被引：19

作者：

Zhang, Chenping ^{[1
,3
]}

Duan, Yugang ^{[1
,2
]}

Xiao, Hong ^{[1
,2
]}

Wang, Ben ^{[1
,2
]}

Ming, Yueke ^{[1
,3
]}

Zhu, Yansong ^{[1
,3
]}

Zhang, Fugan ^{[1
,3
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China

[2] Western China Sci & Technol Innovat Harbour, Xian 710115, Shaanxi, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China

来源：

POLYMER | 2022年 / 242卷

基金：

中国国家自然科学基金;

关键词：

Polymer-matrix composites (PMCs); Porosity; Crystallinity; Mechanical testing; PROCESS PARAMETERS; FIBER; PERFORMANCE; DEFECTS;

D O I：

10.1016/j.polymer.2022.124573

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper, the interlaminar bond strength of laser in-situ consolidation (ISC) CF/PEEK thermoplastic composites was investigated under different process conditions. Short beam shear (SBS) tests were conducted to characterize the load-displacement response, the trend of interlaminar shear strength (ILSS), and the mechanism of porosity and crystallinity on ILSS. The experimental results show that porosity has a significant effect on ILSS. Although increasing the tool temperature results in a more stable and homogeneous crystal structure, no correlation is observed between crystallinity and ILSS. The highest measured ILSS value in the heated tool in-situ consolidation (HTISC) group is 59.59 MPa. The aforementioned represents an increase of 61.23% compared to the constant pressure in-situ consolidation (CPISC) group. The proposed method can be used to provide a reference value for acceptance criteria in engineering applications of thermoplastic composites.

引用

页数：9

共 45 条

[41] A fully coupled local and global optical-thermal model for continuous adjacent laser-assisted tape winding process of type-IV pressure vessels [J].