CSAI analysis of non-crimp fabric cross-ply laminate manufactured through wet compression molding process

被引：6

作者：

Lee, Sooyoung ^{[1
]}

Hong, Chaeyoung ^{[1
]}

Choi, Taeseong ^{[1
]}

Kim, Hye-gyu ^{[2
]}

Im, Seong-Woo ^{[2
]}

Kang, Soo-Chang ^{[2
]}

Park, Young-Bin ^{[1
,2
]}

Ji, Wooseok ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol UNIST, Dept Mech Engn, Ulsan, South Korea

[2] UNIST Composites Res Ctr, Ulsan, South Korea

来源：

COMPOSITE STRUCTURES | 2021年 / 255卷

关键词：

Wet compression molding; Non-crimp fabric; Barely visible impact damage; Compressive strength after impact; INTERPRETING PROCESS DATA; AUTOMOBILE BODY; COMPOSITE; DESIGN; IMPACT;

D O I：

10.1016/j.compstruct.2020.113056

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The main purpose of the present work is to demonstrate mechanical performance of a wet-compression-molding (WCM) composite product through conventional compressive-strength-after-impact (CSAI) analysis. Biaxial non-crimp fabric (NCF) is utilized to manufacture laminated composite panels. Specimens are cut from the panels and tested to characterize fundamental mechanical properties of the NCF composite. The volume fractions of fibers and voids are also measured to evaluate the quality of the WCM product. Impact tests are carried out to examine impact resistance of the composite structure. Numerous impact characteristics at various energy levels are quantitatively measured. Internal failure patterns and damage extent are revealed via X-ray CT. Compression tests on the impacted plates are followed to evaluate structural integrity and damage tolerance (SIDT). 3D DIC technique is employed and distinct buckling responses dependent on impact energy levels are successfully visualized. Experimental results are showing a promising potential of the WCM process as one of the alternatives to the conventional autoclave-based fabrication method.

引用

页数：11

共 32 条

[1] Automobile leaf springs from composite materials [J].