{"title":"The effect of strain on the a.c. resistance of a metal: a method of studying microplasticity","authors":"A. Esin, W. Jones","doi":"10.1088/0508-3443/18/9/304","DOIUrl":null,"url":null,"abstract":"The effective a.c. resistance of a conductor is a function of the frequency of the current and the resistivity and the permeability of the conductor. The resistivity and permeability are affected by strain and, by using a suitable high-frequency a.c. bridge, these effects can be amplified and measured as a function of strain. In this paper it is shown that the changes in the effective a.c. resistance which result from straining a ferromagnetic metal can be used as a method for determining the onset of plasticity and, more important, that of microplasticity, which occurs while the material is in the nominally elastic region.","PeriodicalId":9350,"journal":{"name":"British Journal of Applied Physics","volume":"14 1","pages":"1251-1356"},"PeriodicalIF":0.0000,"publicationDate":"1967-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"British Journal of Applied Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/0508-3443/18/9/304","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
The effective a.c. resistance of a conductor is a function of the frequency of the current and the resistivity and the permeability of the conductor. The resistivity and permeability are affected by strain and, by using a suitable high-frequency a.c. bridge, these effects can be amplified and measured as a function of strain. In this paper it is shown that the changes in the effective a.c. resistance which result from straining a ferromagnetic metal can be used as a method for determining the onset of plasticity and, more important, that of microplasticity, which occurs while the material is in the nominally elastic region.
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