Effect of Molding Condition on Mechanical properties during Joining of GMT-Sheet

J. Ocean Eng. Technol. 2001;15(2):111-119.

Kim H.,Choi Y.S.,Seo J.,Han G.Y.,Lee D.G.

Dept. of Precision Mechanical Engineering Chosun University,Dept. of Precision Mechanical Engineering Chosun University,Dept. of Precision Mechanical Engineering Chosun University,School of Mechanical Engineering Chosun University,School of Mechanical

GMT-Sheet의 접합에 있어서 기계적 성질에 미치는 성형조건의 영향

김혁,최유성,서진,한길영,이동기

조선대학교 대학원 정밀기계공학과,조선대학교 대학원 정밀기계공학과,조선대학교 대학원 정밀기계공학과,조선대학교 공과대학 기계공학부,조선대학교 공과대학 기계공학부

Keywords: Glass mat reinforced thermoplastic-sheet (GMT-Sheet), Randomly oriented composite, Unidirectional oriented composite, Joining efficiency, Compression ratio, Degree of nonhomogeneity, Lap joint

핵심용어: 유리섬유강화 열가소성 복합재료 시트, 랜덤재, 일방향재, 접합효율, 압축비, 불균질도, 겹치기 이음

Abstract

The application as the parts of an automobile, using the property of GMT-Sheet, is increasing. In order to exchange the parts of an automobile for GMT-Sheet, at first, the establishment and problem of exact joining strength must be determined. We have studied it using composites which is not same each other fiber oriented condition so as to determine joining strength and joining condition of GMT-Sheet. In this study, the result of experiment of forming condition concerned joining problem of GMT-Sheet is this; joining efficiency of GMT-Sheet, increases as lap joint length L increases. Increase of compression ratio causes decrease of joining efficiency after of GMT-Sheet joining. In the viewpoint of recycling, randomly oriented composite of GMT-Sheet is desirable more than unidirectional oriented composite. We has better design the structure so as not to occur to stress centralization on the joining part.