한국해양대학교

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각각의 bending stress 조건에서 온수환경의 영향에 따른 GFRP의 기계적 성질

Title
각각의 bending stress 조건에서 온수환경의 영향에 따른 GFRP의 기계적 성질
Alternative Title
Effect of hot water environment under different bending stress on the GFRP mechanical property
Author(s)
HUWEIGUANG
Publication Year
2015
Publisher
한국해양대학교
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002174518
http://repository.kmou.ac.kr/handle/2014.oak/8560
Abstract
The mechanical properties of composites are greatly affected by the environment. In this research, the glass fiber unsaturated polyester composite materials (GFRP) under different bending stress and submerged in hot water at a temperature of 80℃ is investigated. Loading 100 H (hours), 200 H, 400 H, 600 H, 800 H for testing under stresses equal to 0%(zero pressure), 30%, 50% and 70% of the material ultimate strength are applied on samples. Then water absorption ratio is analyzed, and by experiment data of bending stress and modulus of elasticity in bending after three-point bending test, failure time, life curve, normalized strength degradation model and the fracture energy of composites are analyzed. Finally the change of material interface affected by the environment is observed with optical microscope and SEM, and the reasons of the change of material mechanics properties are explained.
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재료공학과 > Thesis
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000002174518.pdf Download

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