Abstract
Near-tip displacement fields of a creep crack which exhibited moderate deflection from its initially mode I condition have been measured using the stereoimaging technique. From the measured displacement fields, near-tip strains and crack opening displacements (CODs) are obtained and compared with existing asymptotic solutions for stationary, deflected cracks. The comparison reveals that the near-tip strain field and CODs of a stationary deflected creep crack in stainless steel (creep exponent of 8) are of the Riedel-Rice type. The degree of mode mixity is also adequately predicted for the deflected crack. The results for stainless steel are compared with previous results for a glass-ceramic (creep exponent of 1.5), to assess the range of applicability of the RR field. Discrepancies between theory and experiment are discussed in terms of the dominant creep mechanism, which is dislocation creep for the stainless steel and grain boundary sliding for the glass-ceramic.
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References
H. Riedel and J.R. Rice, in Fracture Mechanics: Twelfth Conference, ASTM STP 700, American Society for Testing and Materials, Philadelphia (1980) 112–130.
J.W. Hutchinson, Journal of Mechanics and Physics of Solids 16 (1968) 13–31.
J.R. Rice and G.F. Rosengren, Journal of Mechanics and Physics of Solids 16 (1968) 1–12.
N.L. Goldman and J.W. Hutchinson, International Journal of Solids and Structures 11 (1975) 575–591.
R.A. Page, K.S. Chan, D.L. Davidson and J. Lankford, Journal of American Ceramic Society, 73 (1990) 2977–2986.
P. Marshall, Austenitic Stainless Steels, Elsevier Applied Science Publishers, London, U.K. (1984) 312.
C.F. Shih, in Fracture Analysis, ASTM STP 560, American Society for Testing and Materials, Philadelphia (1974) 187–210.
S. Suresh and C.F. Shih, International Journal of Fracture 30 (1986) 237–259.
M. Symington, C.F. Shih and M. Ortiz, Tables of Plane Strain Mixed-Mode Plastic Crack Tip Fields, Technical Report MRG/DMR-8714665/1, Division of Engineering, Brown University (1988).
D.R. Williams, D.L. Davidson and J. Lankford, Experimental Mechanics 20 (1980) 134–139.
D.L. Davidson, in Micro and Macro Mechanics of Crack Growth, K. Sadananda, B.B. Rath and D.J. Michel (eds.) TMS, Warrendale, Pa. (1981) 161–176.
W.F. Simmons and H.C. Cross, The Elevated-Temperature Properties of Stainless Steel, ASTM, Philadelphia (1952) 60.
N.P. Suh and A.P.L. Turner, Elements of the Mechanical Behavior of Solids, McGraw-Hill, New York (1975) 376.
C.F. Shih, private communication, July (1989).
E.M. Heuse and G. Partridge, Journal of Materials Science 9 (1974) 1255–1261.
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Chan, K.S., Page, R.A. & Davidson, D.L. Near-tip behavior of deflected creep cracks. Int J Fract 50, 281–292 (1991). https://doi.org/10.1007/BF00032197
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DOI: https://doi.org/10.1007/BF00032197