Development and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode (Verification of analysis accuracy by simulated crack)
A dedicated strain gage has been developed to measure the stress intensity factor of cracks. Conventional strain gages dedicated to stress intensity factor analysis have been made by combining multiple elements into a single gage. Therefore, it took time and effort to analyze the stress intensity fa...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2022-03-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/88/908/88_21-00362/_pdf/-char/en |
| _version_ | 1798018100213317632 |
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| author | Shigeru KUROSAKI Jyo SHIMURA Syusaku YAMAJI Mitsutaka KANEHIRA Takeshi SHIMURA |
| author_facet | Shigeru KUROSAKI Jyo SHIMURA Syusaku YAMAJI Mitsutaka KANEHIRA Takeshi SHIMURA |
| author_sort | Shigeru KUROSAKI |
| collection | DOAJ |
| description | A dedicated strain gage has been developed to measure the stress intensity factor of cracks. Conventional strain gages dedicated to stress intensity factor analysis have been made by combining multiple elements into a single gage. Therefore, it took time and effort to analyze the stress intensity factor. Therefore, in this research, we have developed a dedicated strain gage that can analyze the stress intensity factor more easily than before with only one gage of one element. The developed strain gage analysis formula uses the strain component εθ formula at the crack tip. We focused on the gage angle θ that brings the second term of the crack analysis strain component εθ close to 0. By setting the second term to 0, the stress intensity factor of the first term can be analyzed accurately in consideration of the second term. The developed gage has a donut shape with radii r1 and r2 and a width of 1 mm with the crack tip as the origin, and the gage grid angle has an angle from 0 ° to 52 °. A tensile test piece with a crack opening mode load was manufactured and a tensile experiment was conducted. The experimental value of the stress intensity factor was obtained within an error of ±10% from the theoretical value. |
| first_indexed | 2024-04-11T16:18:19Z |
| format | Article |
| id | doaj.art-0cf345ae188a4f6ca85c400d074ca162 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T16:18:19Z |
| publishDate | 2022-03-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-0cf345ae188a4f6ca85c400d074ca1622022-12-22T04:14:26ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612022-03-018890821-0036221-0036210.1299/transjsme.21-00362transjsmeDevelopment and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode (Verification of analysis accuracy by simulated crack)Shigeru KUROSAKI0Jyo SHIMURA1Syusaku YAMAJI2Mitsutaka KANEHIRA3Takeshi SHIMURA4Kyowa Electronic Instruments Co., Ltd. Sensor Development Dept.Department of Mechanical and Electrical Engineering, Suwa University of ScienceKyowa Electronic Instruments Co., Ltd.Kyowa Electronic Instruments Co., Ltd.Kyowa Electronic Instruments Co., Ltd.A dedicated strain gage has been developed to measure the stress intensity factor of cracks. Conventional strain gages dedicated to stress intensity factor analysis have been made by combining multiple elements into a single gage. Therefore, it took time and effort to analyze the stress intensity factor. Therefore, in this research, we have developed a dedicated strain gage that can analyze the stress intensity factor more easily than before with only one gage of one element. The developed strain gage analysis formula uses the strain component εθ formula at the crack tip. We focused on the gage angle θ that brings the second term of the crack analysis strain component εθ close to 0. By setting the second term to 0, the stress intensity factor of the first term can be analyzed accurately in consideration of the second term. The developed gage has a donut shape with radii r1 and r2 and a width of 1 mm with the crack tip as the origin, and the gage grid angle has an angle from 0 ° to 52 °. A tensile test piece with a crack opening mode load was manufactured and a tensile experiment was conducted. The experimental value of the stress intensity factor was obtained within an error of ±10% from the theoretical value.https://www.jstage.jst.go.jp/article/transjsme/88/908/88_21-00362/_pdf/-char/enexperimental stress analysisstrain gagestress intensity factorfracture mechanicscrackexperimental mechanicsstress concentrationnondestructive inspectionstress-strain measurement |
| spellingShingle | Shigeru KUROSAKI Jyo SHIMURA Syusaku YAMAJI Mitsutaka KANEHIRA Takeshi SHIMURA Development and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode (Verification of analysis accuracy by simulated crack) Nihon Kikai Gakkai ronbunshu experimental stress analysis strain gage stress intensity factor fracture mechanics crack experimental mechanics stress concentration nondestructive inspection stress-strain measurement |
| title | Development and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode (Verification of analysis accuracy by simulated crack) |
| title_full | Development and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode (Verification of analysis accuracy by simulated crack) |
| title_fullStr | Development and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode (Verification of analysis accuracy by simulated crack) |
| title_full_unstemmed | Development and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode (Verification of analysis accuracy by simulated crack) |
| title_short | Development and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode (Verification of analysis accuracy by simulated crack) |
| title_sort | development and analysis method of single element strain gage for stress intensity factor analysis in crack opening mode verification of analysis accuracy by simulated crack |
| topic | experimental stress analysis strain gage stress intensity factor fracture mechanics crack experimental mechanics stress concentration nondestructive inspection stress-strain measurement |
| url | https://www.jstage.jst.go.jp/article/transjsme/88/908/88_21-00362/_pdf/-char/en |
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