Elastic and transport properties in polycrystals of crackedgrains: Cross-property relations and microstructure
Some arguments of Bristow (1960) concerning the effects of cracks on elastic and transport (i.e., electrical or thermal conduction) properties of cold-worked metals are reexamined. The discussion is posed in terms of a modern understanding of bounds and estimates for physical properties of polycrystals--in contrast to Bristow's approach using simple mixture theory. One type of specialized result emphasized here is the cross-property estimates and bounds that can be obtained using the methods presented. Our results ultimately agree with those of Bristow, i.e., confirming that microcracking is not likely to be the main cause of the observed elastic behavior of cold-worked metals. However, it also becomes clear that the mixture theory approach to the analysis is too simple and that crack-crack interactions are necessary for proper quantitative study of Bristow's problem.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Basic EnergySciences
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 929495
- Report Number(s):
- LBNL-63502; IJESAN; R&D Project: 468117; BnR: KC0303010; TRN: US200813%%217
- Journal Information:
- International Journal of Engineering Science, Vol. 46, Issue 6; Related Information: Journal Publication Date: 2008; ISSN 0020-7225
- Country of Publication:
- United States
- Language:
- English
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