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Effect of the Loading Rate on the Brittle Fracture of Terfenol-D Specimens in Magnetic Field: Strain Energy Density Approach.
- Source :
-
Strength of Materials . Nov2016, Vol. 48 Issue 6, p791-800. 10p. 3 Diagrams, 2 Charts, 3 Graphs. - Publication Year :
- 2016
-
Abstract
- The aim of the present study is to characterize the fracture behavior of the giant magnetostrictive Terfenol-D alloy, both experimentally and numerically. Three-point bending tests have been carried out on single-edge precracked specimens, and fracture loads have been measured at different loading rates, in the presence or absence of a magnetic field. In recent years, it has been shown that the strain energy density (SED), averaged in a finite control volume, can successfully predict brittle failures of cracked, U- and V-notched specimens made of several materials. By performing coupled-field finite element analyses, the effects of the magnetic field and he loading rate on Terfenol-D failures have been analyzed, and the capability of SED criterion to capture these effects has been discussed. A relationship between the SED control volume size and the loading rate has been proposed, and failures have been quite accurately predicted in terms of the averaged SED. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00392316
- Volume :
- 48
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Strength of Materials
- Publication Type :
- Academic Journal
- Accession number :
- 121331778
- Full Text :
- https://doi.org/10.1007/s11223-017-9826-z