Research on Low-Velocity Impact Response of Novel Short-Fiber-Reinforced Composite Laminates

Author:

Huang Yinyuan1,EShun Felix Thompson1,Hu Junfeng12ORCID,Zhang Xutong1,Zhao Jianping1,Zhang Siqi1,Qian Rui1,Chen Zhou1,Chen Dingding3

Affiliation:

1. School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211800, China

2. Jiangsu Bi-gold New Material Stock Co., Ltd., Zhenjiang 212499, China

3. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China

Abstract

Short-fiber-reinforced polymers (SFRPs) based on unidirectionally arrayed chopped strands (UACSs) have excellent formability and outstanding mechanical response. The low-velocity impact response, such as the delamination, damage tolerance and energy absorption of UACS composites, are essential to guarantee the stability and safety of composite components in service. The current study investigates the low-velocity impact response of continuous carbon-fiber-reinforced polymer (CFRP) and UACS laminates with vertical slits under drop-weight impact with various impact energies (4, 7 and 11 J). The in-plane size of the studied samples is 100 mm × 100 mm, and the stacking sequence is [0/90]4s. The time–history curves of load and energy are examined during low-velocity impact experiments, as well as the nonvisible damages are obtained by ultrasound C-scan imaging technique. A user-defined subroutine VUMAT, including the Johnson–Cook material and failure model, which is used to simulate the elastic–plastic property of the slits filled with resin, is coded in ABAQUS/Explicit. According to C-scan inspections of the impact-damaged laminates, UACS specimens show more severe delamination as impact energy increases. The damaged area of continuous CFRP laminates under impact energy of 11 J is 311 mm2, while that of UACS laminates is 1230 mm2. The slits have a negative effect on the load-bearing capacity but increase the energy absorption of UACS laminates by approximately 80% compared to the continuous CFRP laminates at 7 J. According to the variables of different damage modes in numerical simulation, cracks appear at the slits and then expand along the direction perpendicular to the slits, leading to the fracture of fiber. Nevertheless, as the damage expands to the slits, the delamination confines the damage propagation. The existence of slits could guide the path of damage propagation.

Funder

China Postdoctoral Science Foundation

National key research and development project

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

Reference39 articles.

1. Impact on Composite Structures;Abrate;The Aeronautical Journal,1998

2. Development and Applications of Carbon Fiber Reinforced Polymer;Zhang;Eng. Plast. Appl.,2015

3. Manufacturing aspects of advanced polymer composites for automotive applications;Friedrich;Appl. Compos. Mater.,2013

4. Sheet moulding compound (SMC) from carbon fibre recyclate;Palmer;Compos. Part A Appl. Sci. Manuf.,2010

5. The influence of fibre length and concentration on the properties of glass fibre reinforced polypropylene: 7. Interface strength and fibre strain in injection moulded long fibre PP at high fibre content;Thomason;Compos. Part A Appl. Sci. Manuf.,2007

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3