A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic Nonlinearity
Nonlinear ultrasonic testing has been accepted as a promising manner for evaluating material integrity in an early stage. Stress fatigue is the main threats to train safety, railways examinations for stress fatigue are more significant and necessary. A series of ultrasonic nonlinear wave experiments...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/12/17/2698 |
| _version_ | 1811200489627320320 |
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| author | Bo Zhu Jaesun Lee |
| author_facet | Bo Zhu Jaesun Lee |
| author_sort | Bo Zhu |
| collection | DOAJ |
| description | Nonlinear ultrasonic testing has been accepted as a promising manner for evaluating material integrity in an early stage. Stress fatigue is the main threats to train safety, railways examinations for stress fatigue are more significant and necessary. A series of ultrasonic nonlinear wave experiments are conducted for rail specimens extracted from railhead with different degree of fatigue produced by three-point bent loading condition. The nonlinear parameter is the indicator of nonlinear waves for expressing the degree the fatigue. The experimental results show that the sensitivity of a third harmonic longitudinal wave is higher than second harmonic longitudinal wave testing. As the same time, collinear wave mixing shows strong relative with fatigue damages than a second longitudinal wave nondestructive testing (NDT) method and provides more reliable results than third harmonic longitudinal waves nonlinear testing method. |
| first_indexed | 2024-04-12T02:05:02Z |
| format | Article |
| id | doaj.art-d943b82efdc546bab5f42a35c9bb638e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-12T02:05:02Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-d943b82efdc546bab5f42a35c9bb638e2022-12-22T03:52:33ZengMDPI AGMaterials1996-19442019-08-011217269810.3390/ma12172698ma12172698A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic NonlinearityBo Zhu0Jaesun Lee1Department of Quality and Technology, Shandong Special Equipment Inspection Institute Co., Ltd., Shandong 250101, ChinaSchool of Mechanical Engineering, Changwon National University, Changwon 51140, KoreaNonlinear ultrasonic testing has been accepted as a promising manner for evaluating material integrity in an early stage. Stress fatigue is the main threats to train safety, railways examinations for stress fatigue are more significant and necessary. A series of ultrasonic nonlinear wave experiments are conducted for rail specimens extracted from railhead with different degree of fatigue produced by three-point bent loading condition. The nonlinear parameter is the indicator of nonlinear waves for expressing the degree the fatigue. The experimental results show that the sensitivity of a third harmonic longitudinal wave is higher than second harmonic longitudinal wave testing. As the same time, collinear wave mixing shows strong relative with fatigue damages than a second longitudinal wave nondestructive testing (NDT) method and provides more reliable results than third harmonic longitudinal waves nonlinear testing method.https://www.mdpi.com/1996-1944/12/17/2698railwaystress fatigueultrasonic nonlinear wavewave mixing |
| spellingShingle | Bo Zhu Jaesun Lee A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic Nonlinearity Materials railway stress fatigue ultrasonic nonlinear wave wave mixing |
| title | A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic Nonlinearity |
| title_full | A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic Nonlinearity |
| title_fullStr | A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic Nonlinearity |
| title_full_unstemmed | A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic Nonlinearity |
| title_short | A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic Nonlinearity |
| title_sort | study on fatigue state evaluation of rail by the use of ultrasonic nonlinearity |
| topic | railway stress fatigue ultrasonic nonlinear wave wave mixing |
| url | https://www.mdpi.com/1996-1944/12/17/2698 |
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