무인수상정 열습효과로 인한 탄소복합재의 층간전단강도 저하에 관한 연구

홍순국^*

해군중령/해군사관학교 기계시스템공학과 교수

An Analysis of Degradation of ILSS on Carbon-Reinforced Composites by Hydrothermal Ageing for Unmanned Surface Vehicle

Soon-Kook Hong^*

Commander, ROK Navy/Professor, Dept. of Mechanical Engineering System, Republic of Korea Naval Academy

Correspondence to: ^*Soon-Kook Hong Department of Mechanical Engineering System, Republic of Korea Naval Academy 1 Jungwon-ro, Jinhae-gu, Changwon-si, Gyungsangnam-do, 51704, Republic of Korea Tel: +82-55-907-5300 Fax: +82-55-907-5301 E-mail: hsk753@navy.mil.kr

초록

본 논문에서는 무인수상정의 열습효과로 인한 수분확산율과 강도 저하를 평가하기 위해 시편을 다양한 온도 및 시간에 노출시켰다. 해수와 탈 이온수에 72주간 담그어 수분함유량 측정을 통해 수분확산율을 측정하여 Fick 법칙을 따르는 것을 확인하였다. 또한 열습환경에 노출된 시편을 SBS 시험을 시행하여 층간 강도의 저하를 측정하였다. 시험결과, 수분확산율과 층간 강도 저하 간의 연관관계를 밝혀냈고, 염분이 함유된 해수에서의 특성도 확인하였다.

Abstract

To assess water diffusion and degradation of Unmanned Surface Vehicle by Hydrothermal effect, the specimens were exposed to a variety of thermal and time conditions. Furthermore, after immersing the specimens in seawater and distilled water for 72 weeks, the amount of water uptake was tested by gravimetric analysis and the results followed Fick law. Degradation of ILSS was measured from SBS test of specimens exposed to hydrothermal conditions. As a result, correlation of water diffusion and degradation of ILSS was validated and the feature in seawater involving saline was evaluated.

Keywords:

Unmanned Surface Vehicle, Hydrothermal Effect, SBS(Short Beam Shear), Interlaminar Shear Strength

키워드:

무인수상정, 열습효과, 층간 전단 강도

Acknowledgments

본 연구는 해군사관학교 해양연구소 학술연구과제 지원을 받아 수행된 연구결과임(과제명: 해양 무인체계 적용을 위한 탄소섬유계 복합재의 열습효과에 의한 기계적 물성 저하 특성 연구).

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