Abstract
Stress intensity factors were measured for single-edge notched silicon carbide specimens subjected to three-point bending. These data are compared with experimental results from surface flawed specimens subjected to three-point bending. Surface flawed specimens were tested since they resemble defects in structures more closely than any other specimen. The ability to estimate failure conditions for a structural component using measurements of fracture toughness and appropriate equations was evaluated. In many of these tests, acoustic emission and moire interferometry techniques provided valuable information on the crack growth process, constitutive damage zone propagation, and the critical stress intensity factors.
Similar content being viewed by others
References
G.D. Quinn, “Properties Testing and Materials Evaluation,” in Ceramic Engineering and Science Proceedings — 12 Automative Materials Conference, May–June 1984, 298–311.
ASTM Designation E399-83, “Standard Test Method for Plane-Strain Fracture Toughness Testing of Metallic Materials,” Metals-Mechanical Testing: Elevated and Low-Temperature Tests, Vol. 03.01, ASTM (1986).
D. Post, in SEM Handbook on Experimental Mechanics, A. Kobayashi (ed.) (1984) Chapter 7.
C.W. Smith, D. Post, G. Hiatt and G. Nicolletto, Experimental Mechanics 23, 1 (1983) 15–20.
C.W. Smith, J.S. Epstein and O. Olaosebikan, Advances in Aerospace Structures and Materials and Dynamics, ASME-A0-06 (November 1983) 119–126.
W.F. Brown Jr and J.E. Srawley, Plane Strain Crack Toughness Testing of High Strength Metallic Materials, ASTM STP 410 (1966) 13.
R.A. Schmidt and T.J. Lutz, ASTM STP 678 (1979) 166–182.
P. Charalambides and R.M. McMeeking, Journal of the American Ceramic Society 71, No. 6 (1988) 465–672.
J.C. Newman, Jr and I.S. Raju, Analysis of Surface Cracks in Finite Plates Under Tension or Bending Loads, NASA Technical Paper 1578 (1979).
C.A. Walker, P. MacKenzie and J. McKlevie, in Proceedings, 1986 Spring Conference on Experimental Mechanics, Society for Experimental Mechanics (1986) 695–700.
B. Han and D. Post, in Proceedings, 1989 Spring Conference on Experimental Mechanics, SEM (1989) 552–556.
M.S. Dadkah, “Analysis of Ductile Fracture Under Biaxial Loading Using Moire Interferometry”, Ph.D. thesis, Mechanical Engineering Department, University of Washington (1988).
W.G. Reuter and J.S. Epstein, in Fracture Mechanics: Nineteenth Symposium, ASTM STP 969 (1988) 597–619.
P.L. Swanson, C.J. Carolyn, B.R. Lawn, Y.W. Mai and J.B. Hockey, Journal of the American Ceramic Society 70, No. 4 (1987) 229–89.
F.I. Baretta, Experimental Mechanics 28, No. 3 (1988) 310–15.
D. Post, R. Czarnek and C.W. Smith, in Applications of Fracture Mechanics to Materials and Structures, G. Shig, E. Sonner and W. Dahl (eds.), Martinus Nijhoff, Hingham, Mass. (1984) 699–708.
J.B. Du, A. Kobayashi and N. Hawkins, in Fracture of Concrete and Rocks, S.P. Shah and S.E. Swartz (ed.) Springer (1989) 199–204.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Reuter, W.G., Epstein, J.S. & Haggag, F.M. Comparison between “standard” fracture toughness results and surface flaw data for silicon carbide. Int J Fract 47, 181–200 (1991). https://doi.org/10.1007/BF00042575
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00042575