RETRACTED ARTICLE: Rate-dependent behavior and failure characteristics of carbon/Kevlar hybrid woven composites
- Authors
- Woo, Sung-Choong; Kim, Tae-Won; Kim, Jin-Young
- Issue Date
- Jul-2013
- Publisher
- IEEE Computer Society
- Keywords
- carbon; failure mechanism; high-strain-rate; hybrid composite; Kevlar
- Citation
- QR2MSE 2013 - Proceedings of 2013 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering, pp.808 - 812
- Indexed
- SCOPUS
- Journal Title
- QR2MSE 2013 - Proceedings of 2013 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering
- Start Page
- 808
- End Page
- 812
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/162463
- DOI
- 10.1109/QR2MSE.2013.6625693
- Abstract
- Rate-dependent behavior together with failure characteristics of carbon/Kevlar hybrid woven composite under high-strain-rate impact loading were examined. High levels of strain rate, 1008/s∼1922/s, tests were conducted on the cylindrical carbon/Kevlar hybrid composite specimen by means of a Split Hopkinson pressure bar (SHPB) and a high pressure gas gun system. The dependence of flow stress on the strain rate was determined firstly. In order to investigate the micro-structural failure mechanisms on the dynamic characteristics of carbon/Kevlar hybrid woven composite, then the fractured zones in the SHPB tests were analyzed by an optical and a scanning electron microscope. According to the high-strain-rate compressive test results, the flow stress at the level of strain 0.01 and peak stress of the materials increased by as much as 52% and 80 % with increasing strain rate over the range of 1008/s to 1922/s. The failure strain, however decreased by approximately 16%. Microscopic examination of the carbon/Kevlar hybrid woven composite showed complicated and multiple growth of various failure mechanisms, such as matrix fracture, fiber/matrix interfacial debonding, yarn-to-yarn friction and wear, fiber breakages including fiber pull-out and fibrillation at the broken fiber tip. Particularly, extensive delamination induced the final fracture of the materials.
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