Transient Thermal Stresses in Rectangular Prism

by John B. Cheung, Mechanical Engineer; Twin Cities Mining Res. Ctr., U.S. Bureau of Mines, Twin Cities, MN,
Kuppusamy Thirumalai, Mining Engineer; Twin Cities Mining Res. Ctr., U.S. Bureau of Mines, Twin Cities, MN,
Ta-Shen Chen, Assoc. Prof.; Dept. of Mech. Engrg., Univ. of Missouri-Rolla, Rolla, MO,


Serial Information: Journal of the Engineering Mechanics Division, 1974, Vol. 100, Issue 2, Pg. 463-467


Document Type: Journal Paper

Abstract: Fracture and fragmentation of brittle materials by heating are well known but poorly understood phenomena. This study was performed to enhance understanding of initial stress concentrations and resulting fragmentation during surface heating of brittle prism solids. Experiments were carried out on quartzite rock prisms subjected to sudden uniform heating to correlate the theoretical predictions. The results show that thermal stress concentrations occur in the specimen interior near the edges. Experimental results are in agreement with the maximum principle stress fracture criterion for brittle materials.

Subject Headings: Thermal loads | Brittleness | Temperature effects | Prism | Cracking | Stress analysis | Rocks

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