Novel Method for Sizing Metallic Bottom Crack Depth Using Multi-frequency Alternating Current Potential Drop Technique
Potential drop techniques are of two types: the direct current potential drop (DCPD) technique and alternating current potential drop (ACPD) technique, and both of them are used in nondestructive testing. ACPD, as a kind of valid method in sizing metal cracks, has been applied to evaluate metal stru...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2015-10-01
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| Series: | Measurement Science Review |
| Subjects: | |
| Online Access: | http://www.degruyter.com/view/j/msr.2015.15.issue-5/msr-2015-0037/msr-2015-0037.xml?format=INT |
| _version_ | 1819090532906827776 |
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| author | Li Yuting Gan Fangji Wan Zhengjun Liao Junbi Li Wenqiang |
| author_facet | Li Yuting Gan Fangji Wan Zhengjun Liao Junbi Li Wenqiang |
| author_sort | Li Yuting |
| collection | DOAJ |
| description | Potential drop techniques are of two types: the direct current potential drop (DCPD) technique and alternating current potential drop (ACPD) technique, and both of them are used in nondestructive testing. ACPD, as a kind of valid method in sizing metal cracks, has been applied to evaluate metal structures. However, our review of most available approaches revealed that some improvements can be done in measuring depth of metal bottom crack by means of ACPD, such as accuracy and sensitivity of shallow crack. This paper studied a novel method which utilized the slope of voltage ratio-frequency curve to solve bottom crack depth by using a simple mathematic equation based on finite element analysis. It is found that voltage ratio varies linearly with frequency in the range of 5-15 Hz; this range is slightly higher than the equivalent frequency and lower than semi-permeable frequency. Simulation and experiment show that the novel method can measure the bottom crack depth accurately. |
| first_indexed | 2024-12-21T22:25:20Z |
| format | Article |
| id | doaj.art-c16bf25274654aef88d66f66a9b29480 |
| institution | Directory Open Access Journal |
| issn | 1335-8871 |
| language | English |
| last_indexed | 2024-12-21T22:25:20Z |
| publishDate | 2015-10-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Measurement Science Review |
| spelling | doaj.art-c16bf25274654aef88d66f66a9b294802022-12-21T18:48:14ZengSciendoMeasurement Science Review1335-88712015-10-0115526826810.1515/msr-2015-0037msr-2015-0037Novel Method for Sizing Metallic Bottom Crack Depth Using Multi-frequency Alternating Current Potential Drop TechniqueLi Yuting0Gan Fangji1Wan Zhengjun2Liao Junbi3Li Wenqiang4School of Manufacturing, Science and Engineering, Sichuan University, Chengdu, Sichuan province, 610065, P. R. ChinaSchool of Manufacturing, Science and Engineering, Sichuan University, Chengdu, Sichuan province, 610065, P. R. ChinaSchool of Manufacturing, Science and Engineering, Sichuan University, Chengdu, Sichuan province, 610065, P. R. ChinaSchool of Manufacturing, Science and Engineering, Sichuan University, Chengdu, Sichuan province, 610065, P. R. ChinaSchool of Manufacturing, Science and Engineering, Sichuan University, Chengdu, Sichuan province, 610065, P. R. ChinaPotential drop techniques are of two types: the direct current potential drop (DCPD) technique and alternating current potential drop (ACPD) technique, and both of them are used in nondestructive testing. ACPD, as a kind of valid method in sizing metal cracks, has been applied to evaluate metal structures. However, our review of most available approaches revealed that some improvements can be done in measuring depth of metal bottom crack by means of ACPD, such as accuracy and sensitivity of shallow crack. This paper studied a novel method which utilized the slope of voltage ratio-frequency curve to solve bottom crack depth by using a simple mathematic equation based on finite element analysis. It is found that voltage ratio varies linearly with frequency in the range of 5-15 Hz; this range is slightly higher than the equivalent frequency and lower than semi-permeable frequency. Simulation and experiment show that the novel method can measure the bottom crack depth accurately.http://www.degruyter.com/view/j/msr.2015.15.issue-5/msr-2015-0037/msr-2015-0037.xml?format=INTNondestructive testingalternating current potential drop techniquebottom crackdepth measurement |
| spellingShingle | Li Yuting Gan Fangji Wan Zhengjun Liao Junbi Li Wenqiang Novel Method for Sizing Metallic Bottom Crack Depth Using Multi-frequency Alternating Current Potential Drop Technique Measurement Science Review Nondestructive testing alternating current potential drop technique bottom crack depth measurement |
| title | Novel Method for Sizing Metallic Bottom Crack Depth Using Multi-frequency Alternating Current Potential Drop Technique |
| title_full | Novel Method for Sizing Metallic Bottom Crack Depth Using Multi-frequency Alternating Current Potential Drop Technique |
| title_fullStr | Novel Method for Sizing Metallic Bottom Crack Depth Using Multi-frequency Alternating Current Potential Drop Technique |
| title_full_unstemmed | Novel Method for Sizing Metallic Bottom Crack Depth Using Multi-frequency Alternating Current Potential Drop Technique |
| title_short | Novel Method for Sizing Metallic Bottom Crack Depth Using Multi-frequency Alternating Current Potential Drop Technique |
| title_sort | novel method for sizing metallic bottom crack depth using multi frequency alternating current potential drop technique |
| topic | Nondestructive testing alternating current potential drop technique bottom crack depth measurement |
| url | http://www.degruyter.com/view/j/msr.2015.15.issue-5/msr-2015-0037/msr-2015-0037.xml?format=INT |
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