적외선 열화상 기법을 이용한 발열 가능 복합소재의 내부 박리 검출 기술 연구

초록

Composite materials are widely used in various industrial fields due to their distinctive characteristics and superior performance compared to conventional metals. Recently, there has been an active research focus on the development and application of advanced materials such as nanocomposites and multifunctional composites (1). Among them, multifunctional composite materials with heating functions are highly promising for solving problems in various industrial fields, such as ice making or heating. However, repeated exposure to high-temperature environments can cause interlayer delamination due to thermal fatigue and internal cracks, leading to a reduction in mechanical strength (2). Currently, the detection of delamination between layers is difficult using visual methods, and experts rely on non-destructive testing techniques such as ultrasonic waves. In this study, we propose a technique that can detect internal delamination using the self-heating function of exothermic composite materials. Specifically, we analyze the quantitative correlation between internal delamination and exothermic performance through thermal imaging of exothermic composites using statistical techniques. Through this, we aim to present a technology for diagnosing internal delamination of exothermic composite materials that can be easily used by non-experts.