Study on damage evaluation of magnesium alloy with acoustic emission method (Discrimination of {1012} and {1011} twin)
Recently, the fuel consumption improvement by weight saving is required in transportation machine. Therefore, Mg alloy is expected as the alternative material of Al alloy and resin material, because it is the lightest in the practical metals and its specific intensity is high. However, twin crystal...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2016-06-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/82/839/82_16-00027/_pdf/-char/en |
| _version_ | 1811221173595275264 |
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| author | Masanori TAKUMA Naoto YAMASHITA Shigeru MATSUDA Yoshinori ASAGOE Yuu HINOHARA Keisuke OOSUMI Kenichi SAITOH Yoshimasa TAKAHASHI Tomohiro SATO |
| author_facet | Masanori TAKUMA Naoto YAMASHITA Shigeru MATSUDA Yoshinori ASAGOE Yuu HINOHARA Keisuke OOSUMI Kenichi SAITOH Yoshimasa TAKAHASHI Tomohiro SATO |
| author_sort | Masanori TAKUMA |
| collection | DOAJ |
| description | Recently, the fuel consumption improvement by weight saving is required in transportation machine. Therefore, Mg alloy is expected as the alternative material of Al alloy and resin material, because it is the lightest in the practical metals and its specific intensity is high. However, twin crystal deformation occurs easily, and there are the two kinds types (i.e. {1012} and {1011} twin crystal) in that deformation. It has been reported that the {1012} twin crystal has work to relax the stress concentration and the {1011} twin crystal has close relation to fracture. Our aim is to evaluate the kinds and the conditions of those types with AE method. In this study, Mg alloy AZ31 was used, and the AE signals of the alloy were detected in compression, tensile and CT test. After that, the analysis of those signals were done. From the results obtained under this experimental conditions, the following things became clear. (1) The frequency components near 250, 550 and 850 kHz are caused by slip, twin crystal deformation and crack growth respectively. (2) It is possible that the two kinds crystal deformation types are discriminated by the identification standards decided by the AE count and fractal dimension Fd of the detected signals. |
| first_indexed | 2024-04-12T07:54:40Z |
| format | Article |
| id | doaj.art-a1158884192546cba22f8496d9b43d1e |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-12T07:54:40Z |
| publishDate | 2016-06-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-a1158884192546cba22f8496d9b43d1e2022-12-22T03:41:31ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612016-06-018283916-0002716-0002710.1299/transjsme.16-00027transjsmeStudy on damage evaluation of magnesium alloy with acoustic emission method (Discrimination of {1012} and {1011} twin)Masanori TAKUMA0Naoto YAMASHITA1Shigeru MATSUDA2Yoshinori ASAGOE3Yuu HINOHARA4Keisuke OOSUMI5Kenichi SAITOH6Yoshimasa TAKAHASHI7Tomohiro SATO8Kansai Univ. of Dept. of Mechanical EngineeringGraduate School of Kansai Univ.Graduate School of Kansai Univ.Graduate School of Kansai Univ.Graduate School of Kansai Univ.Graduate School of Kansai Univ.Kansai Univ. of Dept. of Mechanical EngineeringKansai Univ. of Dept. of Mechanical EngineeringKansai Univ. of Dept. of Mechanical EngineeringRecently, the fuel consumption improvement by weight saving is required in transportation machine. Therefore, Mg alloy is expected as the alternative material of Al alloy and resin material, because it is the lightest in the practical metals and its specific intensity is high. However, twin crystal deformation occurs easily, and there are the two kinds types (i.e. {1012} and {1011} twin crystal) in that deformation. It has been reported that the {1012} twin crystal has work to relax the stress concentration and the {1011} twin crystal has close relation to fracture. Our aim is to evaluate the kinds and the conditions of those types with AE method. In this study, Mg alloy AZ31 was used, and the AE signals of the alloy were detected in compression, tensile and CT test. After that, the analysis of those signals were done. From the results obtained under this experimental conditions, the following things became clear. (1) The frequency components near 250, 550 and 850 kHz are caused by slip, twin crystal deformation and crack growth respectively. (2) It is possible that the two kinds crystal deformation types are discriminated by the identification standards decided by the AE count and fractal dimension Fd of the detected signals.https://www.jstage.jst.go.jp/article/transjsme/82/839/82_16-00027/_pdf/-char/ennonferrous metaldamage and life evaluationmaterial and structure diagnosistwin crystal deformationnondestructive evaluationacoustic emissionae countfractal dimension |
| spellingShingle | Masanori TAKUMA Naoto YAMASHITA Shigeru MATSUDA Yoshinori ASAGOE Yuu HINOHARA Keisuke OOSUMI Kenichi SAITOH Yoshimasa TAKAHASHI Tomohiro SATO Study on damage evaluation of magnesium alloy with acoustic emission method (Discrimination of {1012} and {1011} twin) Nihon Kikai Gakkai ronbunshu nonferrous metal damage and life evaluation material and structure diagnosis twin crystal deformation nondestructive evaluation acoustic emission ae count fractal dimension |
| title | Study on damage evaluation of magnesium alloy with acoustic emission method (Discrimination of {1012} and {1011} twin) |
| title_full | Study on damage evaluation of magnesium alloy with acoustic emission method (Discrimination of {1012} and {1011} twin) |
| title_fullStr | Study on damage evaluation of magnesium alloy with acoustic emission method (Discrimination of {1012} and {1011} twin) |
| title_full_unstemmed | Study on damage evaluation of magnesium alloy with acoustic emission method (Discrimination of {1012} and {1011} twin) |
| title_short | Study on damage evaluation of magnesium alloy with acoustic emission method (Discrimination of {1012} and {1011} twin) |
| title_sort | study on damage evaluation of magnesium alloy with acoustic emission method discrimination of 1012 and 1011 twin |
| topic | nonferrous metal damage and life evaluation material and structure diagnosis twin crystal deformation nondestructive evaluation acoustic emission ae count fractal dimension |
| url | https://www.jstage.jst.go.jp/article/transjsme/82/839/82_16-00027/_pdf/-char/en |
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