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

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Analyses of the Decrease Phenomenon of Fracture Resistance Curve Under Tension-Compression Loading

인장-압축하중 하의 파괴저항곡선의 감소현상 해석

  • Published : 2000.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

Fracture resistance (J-R) curves, which are used for elastic-plastic fracture mechanics analyses, decreased under tension-compression loading condition. This phenomenon was proved by several former researches, but the causes have not been clear yet. The objective of this paper is to investigate the cause of this phenomenon. On the basis of fracture resistance curve test results, strain hardening hypothesis, stress redistribution hypothesis and crack opening hypothesis were built. In this study, hardness tests, Automated Ball Indentation(ABI) tests, theoretical stress field analyses, and crack opening analyses were performed to prove the hypotheses. From this study, strain-hardening of material, generation of tensile residual stress at crack tip, and crack opening effects are proved as the causes of the decrease hypothesis.

Keywords

References

  1. ASTM E813-89, 1996, 'Standard Test Method for $J_{IC}$, A Measure of Fracture Toughness,' Annual Book of ASTM Standards
  2. ASTM E1152-87, 'Standard Test Method for Determining Fracture Resistance Curves,' Annual Book of ASTM Standards, pp. 763-773
  3. Scott, P., Kramer, G., Vieth, P., Francini, R. and Wikowski, Gery M., 1994, 'The Effects of Dynamic and Cyclic Loading During Ductile Tearing on Circumferentially Cracked Pipe: Experimental Results,' ASME PVP Vol. 280, pp. 207-220
  4. Wilkowski, Gery M., Kramer, G., Vieth, P., Francini, R. and Scott, P., 1994, 'The Effect of Dynamic and Cyclic Loading During Ductile Tearing on Circumferentially Cracked Pipe: Analytical Results,' ASME PVP Vol. 280, pp. 221-239
  5. Naoki Miura, Koichi Kashima, Katsumasa Miyazaki and Satoshi Kanno, 1997, 'Effect of Negative Stress Ratio on Crack Growth for Cracked Pipe Subjected to Cycle Loading with Large-Scale Yielding,' ASME PVP Vol. 350, Fatigue and Fracture 1. Book No. G01062
  6. Naoki Miura, Terutaka Fujioka, Koichi Kashima, Satoshi Kanno, Makoto Hayashi, Masayuki Ishiwata and Novuhjo Gotch, 1993, 'Evaluation of Dynamic Fracture Strength for Japnese Carbon Steel Pipes,' Komae Research Laboratory
  7. 최영환, 1995, '배관 건전성 국제공동연구(IPIRG-2 Program) 해외파견 수행보고서,' 한국원자력안전기술원, p. 292
  8. Seok, C. S., Kim, Y. J. and Weon, J. I., 1988, 'Effect of Reverse Cyclic Loading on the Fracture Resistance Curve in C(T) Specimen,' 2nd International Workshop on The Integrity of Nuclear Components, The Japan Welding Engineering Society Atomic Energy Research Committee, pp. 249-257
  9. 원종일, 석창성, 1999, '역사이클하중이 원자력 배관재료의 파괴저항곡선에 미치는 영향,' 대한기계학회논문집, 제23권, 7호
  10. Wikoski, G. M., Wambaugh, J. O. and Prabhat, K., 1984, 'Single Specimen J Resistance Curve Evaluation Using the Direct-Current Potential Drop Method and Computerized Data Acquisition System,' Fracture Mechanics : 15th Symposium, ASTM STP 833, pp. 553-576
  11. Vassilaros, M. G. and Hackett, E. M., 1984, 'J-Integral R-Curve Testing of High Strength Steels Utilizing the Direct-Current Potential Drop Method,' Fracture Mechanics : 15th Symposium, ASTM STP 833, pp. 535-552
  12. Bakker, Ad., 1985, 'A DC Potential Drop Procedure for Crack Initiation and R-Curve Measurements During Ductile Fracture Tests,' Elastic-Plastic Fracture Test Method, ASTM STP 865, pp. 394-410
  13. 원종일, 석창성, 1999, '역사이클하중하의 파괴저항 특성 평가방법에 관한 연구,' 대한기계학회논문집, 제23권, 제2호, pp. 246-253
  14. Haggag, Fahmy M., 1993, 'In-Situ Measurements of Mechanical Properties Using Novel Automated Ball Indentation System,' Small Specimen Test Techniques Applied to Nuclear Reactor Vessel Thermal Annealing and Plant Life Extension, ASTM STP 1024, pp. 27-44
  15. Anderson, T. L., 1995, 'FRACTURE MECHANICS Fundamentals and Applications', CRC, 2nd Edition, pp. 72-81
  16. Dowling, N. E., 1976, 'Geometry Effects and the J-Integral Approach to Elastic-Plastic Fatigue Crack Growth,' ASTM STP 601, pp. 19-32
  17. Dowling, N. E., and Begley, J. A., 1976, 'Fatigue Crack Growth During Gross Plasticity and the J-Integral,' Mechanics of Crack Growth, ASME ATP590, pp. 82-103