한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

  • 제20권1호
  • /
  • Pages.42-47
  • /
  • 2021
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  • 1598-6721(pISSN)
  • /
  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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경량 재료를 이용한 DCB 시험편의 열림 모드에서의 파손 특성에 관한 연구

A Study on Fracture Characteristics in Opening Mode of a DCB Specimen Using a Lightweight Material

  • 김재원 (공주대학교 일반대학원 기계공학과) ;
  • 조재웅 (공주대학교 기계자동차공학부)
  • Kim, Jae-Won (Department of Mechanical Engineering, Graduate School, Kongju National UNIV.) ;
  • Cho, Jae-Ung (Division of Mechanical and Automotive Engineering, Kongju National UNIV.)
  • 투고 : 2020.08.28
  • 심사 : 2020.09.12
  • 발행 : 2021.01.31
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초록

Recently, many structures using lightweight materials have been developed. This study was conducted by using Al6061-T6 and carbon fiber reinforced plastic (CFRP), two common lightweight materials. In addition, the failure characteristics of an interface bonded between a single material and a heterogeneous bonding material were analyzed. The specimens bonded with CFRP and Al6061-T6 were utilized by the combination of the heterogeneous bonding material. The specimens had a double cantilevered shape and the bonding between the materials was achieved by applying a structural adhesive. The experiments were conducted in opening mode: the lower part of the samples was fixed, while their upper part was subjected to a forced displacement of 3 mm/min by using a tensile tester. Under the tested amount of strength, energy release rate, and considering the specimens' fracture characteristics in opening mode, the specimen "CFRP-Al" presented the maximum stress, followed by "Al" and "CFRP". We can hence conclude that the inhomogeneous material "CFRP-Al" is useful for the construction of lightweight structures bonded with structural adhesive.

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참고문헌

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