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ASTM Selected Technical Papers
Progress in Flaw Growth and Fracture Toughness Testing
By
ISBN:
978-0-8031-6660-8
No. of Pages:
504
Publisher:
ASTM International
Publication date:
1973
eBook Chapter
Prior to Failure Extension of Flaws in a Rate Sensitive Tresca Solid
By
M. P. Wnuk
M. P. Wnuk
1
Associate professor
, Mechanical Engineering Dept., South Dakota State University
, Brookings, S. D. 57006
.
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Page Count:
12
-
Published:1973
Citation
Wnuk, MP. "Prior to Failure Extension of Flaws in a Rate Sensitive Tresca Solid." Progress in Flaw Growth and Fracture Toughness Testing. Ed. Kaufman, JG, Swedlow, JL, Corten, HT, Srawley, JE, Heyer, RH, Wessel, ET, & Irwin, GR. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 : ASTM International, 1973.
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Theoretical analysis shows that the amount of slow growth occuring prior to fracture in a plane stress tension specimen, subjected to a subcritical stress intensity level, is affected by the following parameters: 1. ductility and rheological sensitivity of the material, 2. rate of loading, 3. initial crack size, and 4. geometrical configuration of the test. These parameters enter the governing nonlinear differential equation which describes the quasi-static crack extension in a rate-sensitive Tresca solid. Examples of numerical integration are given and employed to predict the maximum fracture toughness attained in a plane stress tension test.
References
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Brown
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in Fracture Toughness Testing and Its Applications, ASTM STP 381
, American Society for Testing and Materials
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, Vol. 25
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McClintock
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in Fracture Toughness Testing and Its Applications, ASTM STP 381
, American Society for Testing and Materials
, 1965
, pp. 84–113.5.
Rice
, J. R.
, “Mathematical Analysis in the Mechanics of Fracture
,” Fracture, an Advanced Treatise
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.6.
Wnuk
, M. P.
, “Accelerating Crack in a Viscoelastic Solid Subject to Subcritical Stress Intensity
,” NASA report, to be presented to International Conference on Dynamic Crack Propagation, Lehigh University
, 07
1972
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Rice
, J. R.
, Applied Mechanics Reviews
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Cherepanov
, G. P.
, Journal of Applied Mathematics and Mechanics
, Vol. 32
, No. 6
, pp. 1050–1058. (
Translation of Prikladnaya Matematika and Mechanika
, Vol. 32
, 1968
, No. 6
, pp. 1034–1042, by Pergamon Press.9.
Wnuk
, M. P.
, International Journal of Fracture Mechanics
, Vol. 7
, No. 4
, 1971
, pp. 383–407.
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