Composites Research

  • 제17권5호
  • /
  • Pages.54-60
  • /
  • 2004
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  • 2288-2103(pISSN)
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  • 2288-2111(eISSN)
한국복합재료학회 (The Korean Society for Composite Materials)
권호 표지

형상기억합금 강화 복합재의 사전 변형률과 형상기억 효과에 대한 이론적 고찰

An Analytical Study on Prestrain and Shape Memory Effect of Composite Reinforced with Shape Memory Alloy

  • 이재곤 (대구가톨릭대학교 기계자동차공학부) ;
  • 김진곤 (대구가톨릭대학교 기계자동차공학부) ;
  • 김기대 (대구가톨릭대학교 기계자동차공학부)
  • 발행 : 2004.10.01
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초록

복합재의 사전변형률과 형상기억합금의 형상기억효과를 유발하는 형상기억합금의 상변화량과의 관계를 예측하기 위하여 Eshelby의 등가개재물법과 Mori-Tanaka의 평균장이론을 이용한 새로운 3차원 모델을 제안하였다. 복합재 모델은 가공경화 현상을 갖는 알루미늄을 모재로, 단섬유 TiNi 형상기억합금을 강화재로 사용하였다. 모델 해석에 의하면 사전 변형률이 지극히 작은 영역에서는 사전변형률이 모두 강화재의 형상기억 효과를 유발하고, 이 보다 큰 영역에서 사전 변형률은 강화재의 형상기억 효과와 모재의 소성변형에 의한 것으로 나타났다. 이러한 복합재의 강화기구는 모재의 가공경화 현상과 형상기억 효과에 의한 항복응력 증가를 분리하여 제시되어야 한다.

A new three-dimensional model for predicting the relationship between the prestrain of the composite and the amount of phase transformation of shape memory alloy inducing shape memory effect has been proposed by using Eshelby's equivalent inclusion method with Mori-Tanaka's mean field theory. The model composite is aluminum matrix reinforced with short TiNi fiber shape memory alloy, where the matrix is work-hardening material of power-law type. The analytical results predicted by the current model show that most of the prestrain is induced by the plastic deformation of the matrix, except the small prestrain region. The strengthening mechanism of the composite by the shape memory effect should be explained by excluding its increase of yield stress due to the work-hardening effect of the matrix.

키워드

참고문헌

  1. 한국자동차공학회논문집 v.7 no.3 TiNi 합금을 강화한 TiNi/Al 복합재료의 피로균열제어특성에 관한 연구 박영철;윤두표;허선철;김순국;이준희
  2. Mater Trans JIM v.34 On Enhanced Mechanical Properties of TiNi Shape Memory Fiber/Al Matrix Composite Furuya Y;Sasaki A;Taya M https://doi.org/10.2320/matertrans1989.34.224
  3. Proc. of ICCM-10 v.5 Desigh of Smart Composites Based on Shape Memory Effect Taya M;Shimamoto A;Furuya Y
  4. Trans. Japan Inst. Metals v.60 no.12 Enhancement of High Temperature Mechanical Strength of Ti-Ni Fiber/Al Composite Induced by Shape Memory Effect Furuya Y;Taya M https://doi.org/10.2320/jinstmet1952.60.12_1163
  5. Materials Science and Engineering v.A314 Fatigue and fracture behavior of nickel-titanium Shape-memory alloy reinforced aluminum composites Porter GA;Liaw PK;Tiegs TN;Wu KH
  6. Scripta Materialia v.36 no.9 Fiber phase transformation and matrix plastic flow in a room temperature tensile strained NiTi shape memory alloy fiber reinforced 6082 aluminum matrix composite Armstrong WD;Lorentzen T https://doi.org/10.1016/S1359-6462(96)00477-0
  7. Metallurgical and Materials Transactions v.29A Thermomechanical Behavior of TiNi Shape Memory Alloy Fiber Reinforced 6061 Aluminum Matrix Composite Hamada K;Lee JH;Mizuuchi K;Taya M;Inoue K
  8. Acta mater. v.46 no.10 An experimental and modeling investigation of the external strain, internal stress and fiber phase transformation behavior of a TiNi actuated aluminum metal matrix composite Armstrong WD;Lorentzen T;Brondsted P;Larsen PH https://doi.org/10.1016/S1359-6454(98)00020-2
  9. Composite Structures v.60 AE characteristic of the damage behavior of TiNi/Al16061 SMA composite Lee JK https://doi.org/10.1016/S0263-8223(03)00014-X
  10. 대한기계학회논문집(A권) v.25 no.1 형상기억입자 강화 복합체의 탄성계수 평가 김홍건
  11. Materials Transactions JIM v.34 no.3 Strengthening of Metal Matrix Composite by Shape Memory Effect Yamada Y;Taya M;Watanabe R https://doi.org/10.2320/matertrans1989.34.254
  12. Int. J. of Solids and Structures v.37 Micromechanics modeling of composite with ductile matrix and shape memory alloy reinforcement Cherkaoui M;Sun QP;Song GQ https://doi.org/10.1016/S0020-7683(98)00332-1
  13. Computers and Structures v.81 Modeling of SMA materials: Training and two way memory effects Auricchio A;Marfia S;Sacco E https://doi.org/10.1016/S0045-7949(03)00319-5
  14. J. Materials Processing Technology v.116 Constitutive modeling of aluminum matrix NiTi fiber-reinforced smart composite Lee WB;Jie M;Tang CY https://doi.org/10.1016/S0924-0136(01)01051-2
  15. 한국복합재료학회지 v.10 no.3 단섬유 형상기억합금에 의한 복합재료의 강화기구 해석 안득만;김영구;김부섭;박익민;조경목;최일동
  16. Proc. of the Royal Society of London v.A241 The determination of the Elastic Field of an Ellipsoidal Inclusion, and Related Problems Eshelby JD
  17. Acta Metallurgica v.21 Average Stress in the Matrix and Average Elastic Energy of Materials with Misfitting Inclusions Mori T;Tanaka K https://doi.org/10.1016/0001-6160(73)90064-3
  18. J. Mech. Phys. Solids v.50 Three-dimensional constitutive model for shape memory alloys based on microplane model Brocca M.;Brinson L.C.;Bazant Z.P. https://doi.org/10.1016/S0022-5096(01)00112-0
  19. Res Mechanica v.18 A thermomechanical sketch of shape memory effect: one-dimensional tensile behavior Tanaka K