한국해양대학교

Detailed Information

Metadata Downloads

각각의 bending stress 조건에서 온수환경의 영향에 따른 GFRP의 기계적 성질

DC Field Value Language
dc.contributor.author HUWEIGUANG -
dc.date.accessioned 2017-02-22T05:20:35Z -
dc.date.available 2017-02-22T05:20:35Z -
dc.date.issued 2015 -
dc.date.submitted 57071-01-11 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002174518 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/8560 -
dc.description.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. -
dc.description.tableofcontents Contents List of Tables Ⅰ List of Figures Ⅱ Abstract Ⅳ Chapter 1 Introduction 1 1.1 General background 1 1.2 Main research significance 2 Chapter 2 Experiment 4 2.1 Experimental material 4 2.2 VARTM method technology 7 2.3 Composite materials cutting 8 2.4 Bending stress 10 2.5 Water environment at a temperature of 80℃ 10 2.6 Three-point bending test 11 Chapter 3 Analysis and results 13 3.1 Water absorption rate 13 3.2 Bending modulus of elasticity 17 3.3 Bending strength 18 3.4 Extrapolation of time to failure (TF) 25 3.5 Life curve (S-T) 25 3.6 Normalized strength degradation model 26 3.7 Fracture energy 28 Chapter 4 Optical microscope and SEM observation 31 Chapter 5 Conclusion 36 Acknowledgement 37 References 38 -
dc.language kor -
dc.publisher 한국해양대학교 -
dc.title 각각의 bending stress 조건에서 온수환경의 영향에 따른 GFRP의 기계적 성질 -
dc.title.alternative Effect of hot water environment under different bending stress on the GFRP mechanical property -
dc.type Thesis -
dc.date.awarded 2015-08 -
Appears in Collections:
재료공학과 > Thesis
Files in This Item:
000002174518.pdf Download

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse