Development of the Dynamic Photoelastic Hybrid Method for Propagating Interfacial Crack of Isotropic/Orthotropic Bi-materials

등방성/직교이방성 이종재료의 진전 계면균열에 대한 동적 광탄성 실험 하이브리드 법 개발

Hwang, Jae-Seok;Sin, Dong-Cheol;Kim, Tae-Gyu

  • Published : 2001.07.01


When the interfacial crack of isotropic/orthotropic bi-materials is propagated with constant velocity along the interface, stress and displacement components are derived in this research. The dynamic photoelastic experimental hybrid method for the bimaterial is introduced. It is assured that stress components and dynamic photoelastic hybrid developed in this research are valid. Separating method of stress components is introduced from only dynamic photoelastic fringe patterns. Crack propagating velocity of interfacial crack is 69∼71% of Rayleigh wave velocity of epoxy resin. The near-field stress components of bonded interface of bimaterial are similar with those of pure isotopic material and two dissimilar isotropic bimaterials under static or dynamic loading, but very near-field stress components of bonded interface of bimaterial are different from those.


Isotropic/Orthotropic Bi-materials;Dynamic Photoelastic Hybrid Method;Propagating Interfacial Crack;Near-Field Stresses;Dynamic Stress Intensity Factor;Crack Propagating Velocity;Rayleigh Wave Velocity


  1. Lekhnitskii, S. G., 1963, 'Theory of Elasticity of an Anisotropic Body,' Translated by P. Fren, edited by J. J. Brandstatter, Holden-Day Series in Mathematical Physics, Holden-Day Inc., San Francisco
  2. 신동철, 1997, '광탄성 실험의 Hybrid법 개발에 관한 연구,' 석사학위 논문, 영남대
  3. 신동철, 황재석, 2000, '등방성체용 동적 광탄성 하이브리드 법 개발에 관한 연구,' 대한기계학회논문집 A권, 제24권, 제9호, pp. 2220-2227
  4. Deng, X., 1992, 'Complete Complex Series Expansions of Near-tip Fields for Streadily Growing Interface Cracks in Dissimilar Isotropic Materials,' Engr. Frac. Mech., Vol. 42, No. 2, pp. 237-242
  5. Deng, X., 1993, 'General Crack-tip Fields for Stationary and Steadily Growing Interface Cracks in Anisotropic Bimaterals,' J. of Appl. Mech., Vol. 60, pp. 183-189
  6. Aminpour, M. A. and Holsapple, K. A., 1990, 'Near-Field Solutions for Propagating Cracks at the Interface of Dissimilar Anisotropic elastic Materials,' Engr. Frac. Mech., Vol. 36, No. 1, pp. 93-103
  7. Lambros, J. and Rosakis, A. J., 1995, 'Dynamic Decohesion of Bimaterials: Experimental Observations and Failure Criteria,' Int. J. Solids Structures, Vol. 32, No. 17/18, pp. 2677-2702
  8. Singh, R. P., Kavaturu, M. and Shukla, A., 1997, 'Initiation, Propagation and Arrest of an Interface Crack Subjected to Controlled Stress Wave Loading,' Int. J. of Fracture, Vol. 83, pp. 291-304