ISSN:
1741-2765
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract An experiment to investigate the influence of biaxial strain on the dynamic fracture of metals is outlined. A hollow cylindrical specimen is loaded on the inner diameter by a polyethylene-coated exploding wire which results in a circumferential spallation pattern. Prior to fracture, the spall surface undergoes biaxial deformation with a total hoop strain of the same order of magnitude as the total radial strain. This is in contrast to earlier studies in which fracture induced by stress waves was examined in experiments which are characterized by uniaxial-strain conditions. Comparing the results of the two configurations, it can be shown that the maximum principal-stress history required to cause fracture is the same in both cases, although the stresses normal to the fracture surface are quite different. High-speed photographs of the coated exploding wires and dynamic-flash X-rays of the specimens are included to demonstrate the axisymmetry of both the loading and the spall phenomenon.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02322670
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