Structural Engineering and Mechanics

  • 제15권3호
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  • Pages.367-378
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  • 2003
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

A study on the measurement of plastic zone and crack growth length at the crack tip under cyclic loading using ESPI system

  • Kim, Kyung-Su (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Kim, Ki-Sung (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Shim, Chun-Sik (Department of Naval Architecture and Ocean Engineering, Inha University)
  • 투고 : 2002.08.16
  • 심사 : 2003.02.28
  • 발행 : 2003.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

The magnitude of the plastic zone around the crack tip of DENT (Double Edge Notched Tension) specimen and the crack growth length under cyclic loading were measured by ESPI (Electronic Speckle Pattern Interferometry) system. The measured magnitude of plastic zone was compared with the proposed by Irwin and calculated by a nonlinear static method of MSC/NASTRAN. The measured crack growth length by ESPI system was also compared with the obtained data by the image analysis system. From the study, it is confirmed that the plastic zone and crack growth length can be measured accurately with the high-tech equipment (ESPI System).

키워드

참고문헌

  1. Anderson, T.L. (1995), Fracture Mechanics-Fundamentals and Application, CRC Press.
  2. ASTM (1999), Standard Test Method for Measurement of Fatigue Crack Growth Rates, ASTM Designation E466-96, Annual Book of ASTM Standards, American Society for Testing and Materials, Philadelphia.
  3. Dowling, N.E. (1993), Mechanical Behavior of Materials, Prentice-Hall, Inc.
  4. Gong, X.L. and Toyooka, S. (1999), "Investigation of mechanism of plastic deformation process using digital speckle pattern interferometry", Exp. Mech., 39, 25-29. https://doi.org/10.1007/BF02329297
  5. Jones, R. and Wykes, C. (1989), Holographic and Speckle Interferometry, Cambridge University Press, Cambridge.
  6. Kim, K.S. and Shim, C.S. (2002), "A study on the effect of stress concentration factor determined by 3D-ESPI system on the fatigue life", J. Ocean Eng. Tech., 16(1), 46-51.
  7. Nam, K.W. (2001), "Life prediction of fatigue crack propagation and nondestructive evaluation in 5083 aluminum alloy", J. Ocean Eng. Tech., 15(2), 94-98.

피인용 문헌

  1. Effect of the thickness on the mixed mode crack front fields vol.42, pp.5, 2012, https://doi.org/10.12989/sem.2012.42.5.701
  2. 3D effects on crack front core regions, stress intensity factors and crack initiation angles vol.50, pp.9, 2013, https://doi.org/10.1016/j.ijsolstr.2013.01.019
  3. A Study of Overload Effects on Fatigue Crack Propagation under Cyclic Loading Using ESPI System vol.270-273, pp.1662-9795, 2004, https://doi.org/10.4028/www.scientific.net/KEM.270-273.709
  4. An Experimental Study on Fatigue Crack Propagation under Cyclic Loading with Multiple Overloads vol.297-300, pp.1662-9795, 2005, https://doi.org/10.4028/www.scientific.net/KEM.297-300.2495
  5. Effect of Local Strain on Low Cycle Fatigue Measured by ESPI System vol.321-323, pp.1662-9795, 2006, https://doi.org/10.4028/www.scientific.net/KEM.321-323.678