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구조용 접착제 수명예측 기법 정립을 위한 기계적 물성과 분석물성간의 상관관계 분석 연구
신성철(Sungchul Shin),류성우(Seongwoo Ryu),김성겸(Sungkyum Kim) 한국자동차공학회 2022 한국자동차공학회 부문종합 학술대회 Vol.2022 No.6
As the proportion of plastic materials such as CFRP, SMC, PC-ABS, etc., used as a vehicle body increases, the number of cases where the vehicle body is joined only with adhesive without mechanical bonding has increased. Therefore, securing the durability of adhesives and predicting the life expectancy has become more important. Until now, there was no way to know how the experimentally established Arrhenius life equation matches the adhesive life applied to the actual vehicle. In this paper, by formulating the correlation between mechanical properties such as adhesion, which is reduced by aging, and analytical properties such as crosslinking, oxidation, and Tg, mechanical properties can be inferred only by analysis of field applications. In addition, the purpose of this study is to check whether the established correlation formula matches the established Arrhenius lifetime formula and to study ways to further improve the accuracy of the existing Arrhenius formula.