Characterization, identification and life prediction of acoustic emission signals of tensile damage for HSR gearbox housing material
Purpose – This study aims to ensure the operation safety of high speed trains, it is necessary to carry out nondestructive monitoring of the tensile damage of the gearbox housing material in rail time, yet the traditional tests of mechanical property can hardly meet this requirement. Design/methodol...
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| Format: | Article |
| Language: | English |
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Emerald Publishing
2023-06-01
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| Series: | Railway Sciences |
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| Online Access: | https://www.emerald.com/insight/content/doi/10.1108/RS-01-2023-0007/full/pdf |
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| _version_ | 1850207393233764352 |
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| author | Ai Yibo Zhang Yuanyuan Cui Hao Zhang Weidong |
| author_facet | Ai Yibo Zhang Yuanyuan Cui Hao Zhang Weidong |
| author_sort | Ai Yibo |
| collection | DOAJ |
| description | Purpose – This study aims to ensure the operation safety of high speed trains, it is necessary to carry out nondestructive monitoring of the tensile damage of the gearbox housing material in rail time, yet the traditional tests of mechanical property can hardly meet this requirement. Design/methodology/approach – In this study the acoustic emission (AE) technology is applied in the tensile tests of the gearbox housing material of an high-speed rail (HSR) train, during which the acoustic signatures are acquired for parameter analysis. Afterward, the support vector machine (SVM) classifier is introduced to identify and classify the characteristic parameters extracted, on which basis the SVM is improved and the weighted support vector machine (WSVM) method is applied to effectively reduce the misidentification of the SVM classifier. Through the study of the law of relations between the characteristic values and the tensile life, a degradation model of the gearbox housing material amid tensile is built. Findings – The results show that the growth rate of the logarithmic hit count of AE signals and that of logarithmic amplitude can well characterize the stage of the material tensile process, and the WSVM method can improve the classification accuracy of the imbalanced data to above 94%. The degradation model built can identify the damage occurred to the HSR gearbox housing material amid the tensile process and predict the service life remains. Originality/value – The results of this study provide new concepts for the life prediction of tensile samples, and more further tests should be conducted to verify the conclusion of this research. |
| format | Article |
| id | doaj-art-9935d69a89b649beb7d1c231b951426d |
| institution | OA Journals |
| issn | 2755-0907 2755-0915 |
| language | English |
| publishDate | 2023-06-01 |
| publisher | Emerald Publishing |
| record_format | Article |
| series | Railway Sciences |
| spelling | doaj-art-9935d69a89b649beb7d1c231b951426d2025-08-20T02:10:32ZengEmerald PublishingRailway Sciences2755-09072755-09152023-06-012222524210.1108/RS-01-2023-0007Characterization, identification and life prediction of acoustic emission signals of tensile damage for HSR gearbox housing materialAi Yibo0Zhang Yuanyuan1Cui Hao2Zhang Weidong3National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, ChinaPurpose – This study aims to ensure the operation safety of high speed trains, it is necessary to carry out nondestructive monitoring of the tensile damage of the gearbox housing material in rail time, yet the traditional tests of mechanical property can hardly meet this requirement. Design/methodology/approach – In this study the acoustic emission (AE) technology is applied in the tensile tests of the gearbox housing material of an high-speed rail (HSR) train, during which the acoustic signatures are acquired for parameter analysis. Afterward, the support vector machine (SVM) classifier is introduced to identify and classify the characteristic parameters extracted, on which basis the SVM is improved and the weighted support vector machine (WSVM) method is applied to effectively reduce the misidentification of the SVM classifier. Through the study of the law of relations between the characteristic values and the tensile life, a degradation model of the gearbox housing material amid tensile is built. Findings – The results show that the growth rate of the logarithmic hit count of AE signals and that of logarithmic amplitude can well characterize the stage of the material tensile process, and the WSVM method can improve the classification accuracy of the imbalanced data to above 94%. The degradation model built can identify the damage occurred to the HSR gearbox housing material amid the tensile process and predict the service life remains. Originality/value – The results of this study provide new concepts for the life prediction of tensile samples, and more further tests should be conducted to verify the conclusion of this research.https://www.emerald.com/insight/content/doi/10.1108/RS-01-2023-0007/full/pdfHSR gearbox housingDamage identificationAcoustic emission technologySupport vector machineWeightedLife prediction |
| spellingShingle | Ai Yibo Zhang Yuanyuan Cui Hao Zhang Weidong Characterization, identification and life prediction of acoustic emission signals of tensile damage for HSR gearbox housing material Railway Sciences HSR gearbox housing Damage identification Acoustic emission technology Support vector machine Weighted Life prediction |
| title | Characterization, identification and life prediction of acoustic emission signals of tensile damage for HSR gearbox housing material |
| title_full | Characterization, identification and life prediction of acoustic emission signals of tensile damage for HSR gearbox housing material |
| title_fullStr | Characterization, identification and life prediction of acoustic emission signals of tensile damage for HSR gearbox housing material |
| title_full_unstemmed | Characterization, identification and life prediction of acoustic emission signals of tensile damage for HSR gearbox housing material |
| title_short | Characterization, identification and life prediction of acoustic emission signals of tensile damage for HSR gearbox housing material |
| title_sort | characterization identification and life prediction of acoustic emission signals of tensile damage for hsr gearbox housing material |
| topic | HSR gearbox housing Damage identification Acoustic emission technology Support vector machine Weighted Life prediction |
| url | https://www.emerald.com/insight/content/doi/10.1108/RS-01-2023-0007/full/pdf |
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