Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Measurement of Fracture Toughness JC Under Mixed Mode Loading Using Unloading Compliance Method

혼합모드 하중하에서 제하 컴플라이언스법에 의한 파괴 인성 측정

  • Published : 2002.01.01
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Abstract

Experimental procedure to measure fracture toughness (J$_{c}$) under mixed mode loading using CTS(Compact Tension-Shear) specimens is described. It\`s loading angle ranges from 0$^{\circ}$ to 45$^{\circ}$ with interval of 157. The general outline of experimental procedure is similar to that of ASTM E8l3-89 fur mode I fracture. Equations fur determining J-integral is quoted from the authors' previous works. The relation between unloading compliance and physical crack size was calibrated. As an example, fracture toughness of aluminum alloy 2024p-7361 was measured and some reasonable results of J$_{c}$ with various loading angles were obtained.

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References

  1. Mahajan, R. V. and Ravi-chandar, K., 1989, 'An Experimental Investigation of Mixed Mode Fracture,' International Journal of Fracture, Vol. 41, pp. 235-252 https://doi.org/10.1007/BF00018856
  2. Yishu, Z, 1989, 'Experimental Study on Mixed Mode Crack Propagation,' Engineering of Fracture Mechanics, Vol. 34, pp. 891-899 https://doi.org/10.1016/0013-7944(89)90225-7
  3. Davenport, J. C. and Smith, D. J., 1993, 'A Study of Superimposed Fracture Modes Ⅰ, Ⅱ and Ⅲ on PMMA,' Fatigue Fract. Eng. Mater. Struct., Vol. 16, pp. 1125-1133 https://doi.org/10.1111/j.1460-2695.1993.tb00082.x
  4. Guo, Y. H. and Srivatsan, T. S., 1994, 'Influence of Mixed Mode Loading Fatigue Crack Propagation,' Engineering Fracture Mechanics, Vpl. 47, pp. 843-866 https://doi.org/10.1016/0013-7944(94)90063-9
  5. Budden, P. J. and Jone, M. R., 1991, 'A Ductile Fracture Model in Mixed Modes 1 and 2,' Fatigue Fracture, Vol. 14, pp. 469-482 https://doi.org/10.1111/j.1460-2695.1991.tb00675.x
  6. Papadopoulos, G. A., 1987, 'The Stationary Value of the Third Stress Invariant as a Local Fracture Parameter,' Engineering Fracture Mechanics, Vol. 34, pp. 643-652 https://doi.org/10.1016/0013-7944(87)90156-1
  7. Shih, C. F., 1974, 'Small Scale Yielding Analysis of Mixed Mode Plane Strain Crack Problem,' Fracture Analysis, ASTM STP 560
  8. ASTM Standard E399-83,1983, 'Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials,'
  9. ASTM Standard E813-89, 1989, 'Standard Test Method for Jic a Measure of Fracture Toughness,'
  10. 홍기주, 강기주, '1996, '혼합모드 하중을 받는 CTS시험편에서 $K_ I$,$K_ {II}$와 J-적분의 측정방법,' 대한기계학회논문집(A), Vol. 20, No. 11, pp. 3498-3506
  11. Richard, H. A. and benitz, K., 1989, 'A Loading device for the Criterion of Mixed Mode in fracture Mechanics,' International Journal of fracture, vol. 22, pp. R55-58 https://doi.org/10.1007/BF00942726
  12. ASTM Standard E1820-96, 1996, 'Standard Test Method for Measurement of Fracture Toughness'
  13. 김동학, 강기주, 1998, '혼합모드 하중에서의 둔화직선과 CTOD,' 대한기계학회 재료 및 파괴분과 학술대회 논문집, pp. 81-86
  14. J.W, Hutchinson, J. W. and Suo, Z., 1991, 'Mixed Mode Cracking in Layered Materials,' Advance in Applied Mechanics, Vol. 29, pp. 63-191 https://doi.org/10.1016/S0065-2156(08)70164-9

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