[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 30, No. 5, pp.382-388

ISSN: 2508-5107 (Online)

Print publication date 15 Oct 2021

Received 05 Apr 2021 Revised 08 Jul 2021 Accepted 28 Jul 2021

DOI: https://doi.org/10.7735/ksmte.2021.30.5.382

섬유배향함수에 따른 복합재료의 인장강도 시험에서 온도분포 측정

김진우^a^{, *}

Measurement of Temperature Distribution in the Tensile Strength Test of Composites According to Fiber Orientation Functions

Jin-Woo Kim^a^{, *}

aDepartment of Mechanical Engineering, Chosun University

Correspondence to: ^*Tel.: +82-62-230-7014 E-mail address: jinu763@chosun.ac.kr (Jin-Woo Kim).

Abstract

Composite materials are used in parts that require light-weight. In order to select a constituent material for mechanical parts by maintaining the requirements, namely, light-weight and strong, its mechanical behavior must be sufficiently investigated. Therefore, we used an infrared thermal imaging camera to measure the change in temperature with load during the tensile strength test. We also proposed a method to analyze the temperature distribution when the crack progresses during fracture. To measure subtle temperature changes, we applied the lock-in method. The mechanical properties of composite materials are known through the tensile strength test; however, we consider other correlations by measuring temperature distribution of the specimen according to the fiber orientation and content change. The relationship between fracture time and temperature was identified through infrared thermal image analysis of the properties of composite materials. This relationship will useful in tensile tests to analyze composite materials’ properties.

Keywords:

Fiber content, Fiber-reinforced composites, Infrared thermography, Fiber orientation function, Fracture velocity

Acknowledgments

이 논문은 조선대학교 학술연구비의 지원을 받아 연구되었음(2019).

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Jin-Woo Kim

Professor in the Department of Mechanical Engineering, Chosun University. His research interest is Mechanics, design, and materials.

E-mail: jinu763@chosun.ac.kr