Fracture assessment of magnetostrictive materials
Giant magnetostrictive materials are gaining interest in the field of smart material, especially the commercially known Terfenol-D, that is an alloy made out of iron, terbium and dysprosium (Tb0.3Dy0.7Fe1.9). Since these smart materials are subjected to both mechanical loads and magnetic field durin...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2017-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero42/numero_42_art_24.pdf |
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| author | M. Peron SMJ. Razavi F. Berto J. Torgersen M. Colussi |
| author_facet | M. Peron SMJ. Razavi F. Berto J. Torgersen M. Colussi |
| author_sort | M. Peron |
| collection | DOAJ |
| description | Giant magnetostrictive materials are gaining interest in the field of smart material, especially the commercially known Terfenol-D, that is an alloy made out of iron, terbium and dysprosium (Tb0.3Dy0.7Fe1.9). Since these smart materials are subjected to both mechanical loads and magnetic field during their industrial applications, an extensive characterization on the influence of a magnetic field and of defects on their fracture behavior is needed. Very few works can be found in literature about this topic and, thus, the purpose of this work is to partially fill this lack by means of three-point bending tests on single-edge pre-cracked Terfenol-D specimens. Failure loads have been measured at different loading rates and under magnetic fields of various intensities. Since giant magnetostrictive materials are very brittle, the strain energy density (SED) approach has been exploited by means of couplefield finite element analyses. SED has revealed itself as a robust parameters in the assessment of the magnetic field and loading rate effects on fracture resistance, allowing also to propose a relationship between the radius of the control volume and the loading-rate |
| format | Article |
| id | doaj-art-a4e6dcb78172478c9228e0f056cd1f40 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2017-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-a4e6dcb78172478c9228e0f056cd1f402025-01-03T00:38:54ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932017-10-01114222323010.3221/IGF-ESIS.42.2410.3221/IGF-ESIS.42.24Fracture assessment of magnetostrictive materialsM. PeronSMJ. RazaviF. BertoJ. TorgersenM. ColussiGiant magnetostrictive materials are gaining interest in the field of smart material, especially the commercially known Terfenol-D, that is an alloy made out of iron, terbium and dysprosium (Tb0.3Dy0.7Fe1.9). Since these smart materials are subjected to both mechanical loads and magnetic field during their industrial applications, an extensive characterization on the influence of a magnetic field and of defects on their fracture behavior is needed. Very few works can be found in literature about this topic and, thus, the purpose of this work is to partially fill this lack by means of three-point bending tests on single-edge pre-cracked Terfenol-D specimens. Failure loads have been measured at different loading rates and under magnetic fields of various intensities. Since giant magnetostrictive materials are very brittle, the strain energy density (SED) approach has been exploited by means of couplefield finite element analyses. SED has revealed itself as a robust parameters in the assessment of the magnetic field and loading rate effects on fracture resistance, allowing also to propose a relationship between the radius of the control volume and the loading-ratehttp://www.gruppofrattura.it/pdf/rivista/numero42/numero_42_art_24.pdfStrain energy densityFracture toughnessLoading ratesMagnetic fieldGiant magnetostrictive materialsTerfenol-D |
| spellingShingle | M. Peron SMJ. Razavi F. Berto J. Torgersen M. Colussi Fracture assessment of magnetostrictive materials Fracture and Structural Integrity Strain energy density Fracture toughness Loading rates Magnetic field Giant magnetostrictive materials Terfenol-D |
| title | Fracture assessment of magnetostrictive materials |
| title_full | Fracture assessment of magnetostrictive materials |
| title_fullStr | Fracture assessment of magnetostrictive materials |
| title_full_unstemmed | Fracture assessment of magnetostrictive materials |
| title_short | Fracture assessment of magnetostrictive materials |
| title_sort | fracture assessment of magnetostrictive materials |
| topic | Strain energy density Fracture toughness Loading rates Magnetic field Giant magnetostrictive materials Terfenol-D |
| url | http://www.gruppofrattura.it/pdf/rivista/numero42/numero_42_art_24.pdf |
| work_keys_str_mv | AT mperon fractureassessmentofmagnetostrictivematerials AT smjrazavi fractureassessmentofmagnetostrictivematerials AT fberto fractureassessmentofmagnetostrictivematerials AT jtorgersen fractureassessmentofmagnetostrictivematerials AT mcolussi fractureassessmentofmagnetostrictivematerials |