Thermal Fatigue and Thermal Shock Investigations
Results are given from thermal fatigue tests of two steels, run in a fatigue testing machine. Non-uniform temperature distribution during heating and cooling in each cycle gives rise to stresses in the specimen. The number of cycles before the first crack appears is recorded and is compared with the maximum temperature as well as with the amount of plastic strain during the cycle. An estimate of the strains and stresses is given, supported with experimental data, obtained from measurements of surface strains using an optical grating technique.
KeywordsResidual Stress Plastic Strain Fatigue Life Test Piece Thermal Fatigue
Unable to display preview. Download preview PDF.
- Baron, H. G., and B. S. Bloomfield: Resistance to Thermal Stress Fatigue of Some Steels, Heat-resisting Alloys and Cast Iron. J. Iron and Steel Inst. 177, 223 (March 1961).Google Scholar
- Coffin, L. F., Jr., and N. Y. Schenectady: An Investigation of Thermal-Stress Fatigue as Related to High-temperature Piping Flexibility. Trans. ASME 76, 931 (1954).Google Scholar
- Taira, S., et al.: Thermal Fatigue under Multiaxial Thermal Stresses. Proc. of the 6th Japan Congress on Testing Materials. March 1963.Google Scholar
- Swindeman, R. W., and D. A. Douglas: The Failure of Structural Metals Subjected to Strain-Cycling Conditions. J. Basic Eng. 81, 203 (1959).Google Scholar
- Muscatell, F. L., et al.: Thermal Shock Resistance of High Temperature Alloys. Amer. Soc. for Testing Materials, Proc., 57 (1957).Google Scholar
- Tomalin, Steels in Steam Turbines, High-temperature Properties of Steel, BISRA, Eastbourne, April 1966.Google Scholar
- Coffin, L. F., Jr.: Thermal Stress Fatigue. Prod. Engineering, p. 175 (June 1957).Google Scholar
- Hill, R.: The Mathematical Theory of Plasticity, p. 260. Oxford (1956).Google Scholar