Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)
- Volume 21 Issue 1
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- Pages.104-111
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- 1997
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- 1226-4873(pISSN)
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- 2288-5226(eISSN)
DOI QR Code
Additional Damage of A17075-T651 under $90^{\circ}C$ Out-of phase Biaxial Loading from Crystal Structure Dependence
$90^{\circ}C$ 위상차의 이축하중 하에서 A17075-T651의 부가적 손상에 관한 결정구조 의존성에 관한 연구
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Lee, Hyun-Woo
(Dept.of Precision Mechanical Engineering, Busan National University) ;
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Oh, Se-Jong
(Graduate School of Busan National University)
- Published : 1997.01.01
Abstract
Accounting for the additional damages come out from non-proportional loading path effect, material damage according to crystal structure dependence was studied. Microscopic observations of damaged material by SEM(Scanning Electron Microscope) showed crystal structure dependence. Biaxial in-phase loaded specimens showed the slips of same direction, which pararell each other, but biaxial 90.deg. out-of-phase loaded specimens showed multiply crossed slips. S. H. Doong and D. F. Socie reported that wavy/planar or planar slip material showed the increase in the cyclic hardening level during non-proportional cycling. From these results, the additional hardening and non-proportional loading effects were related with slip mechanism, and the slip mechanism was related with crystal structure. In the present study, a damage mechanism which accounts for the non-proportional loading effect from crystal structure dependence was considered and applied to A17075-T651.
Keywords
- Damageable Plane;
- Planar Slip Material;
- Biaxial Non-Propotional Loading;
- Additional Damage;
- Crystal Structure Dependence
- 손상가능면;
- 평면슬립재료;
- 이축 비비례 하중경로;
- 부가적 손상;
- 결정구조 의존성;