한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제20권3호
  • /
  • Pages.178-186
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  • 2003
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

표면처리된 알루미늄 5052-H34 합금의 층격특성에 관한 실험적 연구

An Experimental Study on the Impact Characteristics of Surface Hardened Al 5052-H34 Alloy

  • 손세원 (건국대학교 기계항공공학부) ;
  • 김희재 (육군사관학교 무기공학과) ;
  • 이두성 (건국대학교 수학과) ;
  • 홍성희 (건국대학교 기계설계학과 대학원)
  • 발행 : 2003.03.01
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초록

In order to investigate the fracture behaviors (penetration modes) and the resistance to penetration during ballistic impact of Al 5052-H34 alloy laminates, cold-rolled Al 5052-H34 alloy laminates, anodized Al 5052-H34 alloy laminates, and anodized Al 5052-H34 alloy after cold-rolling, a ballistic testing was conducted. In general, superior armor materials are brittle materials which have a high hardness. Ballistic resistance of these materials was measured by a protection ballistic limit (V$_{50}$), a statistical velocity with 50% probability fur incompletete penetration. Fracture begaviors and ballistic tolerance, described by penetration modes, ate observed from the results from the results of V$_{50}$ test and Projectile Through Plates (PTP) test at velocities greater than V$_{50}$, respectively. PTP tests were conducted with 0$_{\circ}$obliquity at room temperature using 5.56mm ball projectile. V$_{50}$ tests with 0$_{\circ}$obliquity at room temperature were concucted with projectiles that could achieve neat or complete penetration during PTP tests. Surface hardness, resistance to penetration, and penetration modes of Al 5052-H34 alloy laminates are compared to those of cold-rolled Al 5052-H34 alloy laminates and anodized Al 5052-H34 alloy laminates and anodized Al 5052-H34 cold-rolled alloy.

키워드

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