Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves
The nonlinear wave motion equation is solved by the perturbation method. The nonlinear ultrasonic coefficients β and δ are related to the fundamental and harmonic amplitudes. The nonlinear ultrasonic testing system is used to detect received signals during tensile testing and bending fatigue testing...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/457384 |
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| author | Hongjuan Yan Chunguang Xu Dingguo Xiao Haichao Cai |
| author_facet | Hongjuan Yan Chunguang Xu Dingguo Xiao Haichao Cai |
| author_sort | Hongjuan Yan |
| collection | DOAJ |
| description | The nonlinear wave motion equation is solved by the perturbation method. The nonlinear ultrasonic coefficients β and δ are related to the fundamental and harmonic amplitudes. The nonlinear ultrasonic testing system is used to detect received signals during tensile testing and bending fatigue testing of GH4169 superalloy. The results show that the curves of nonlinear ultrasonic parameters as a function of tensile stress or fatigue life are approximately saddle. There are two stages in relationship curves of relative nonlinear coefficients β′ and δ′ versus stress and fatigue life. The relative nonlinear coefficients β′ and δ′ increase with tensile stress when tensile stress is lower than 65.8% of the yield strength, and they decrease with tensile stress when tensile stress is higher than 65.8% of the yield strength. The nonlinear coefficients have the extreme values at 53.3% of fatigue life. For the second order relative nonlinear coefficient β′, there is good agreement between the experimental data and the comprehensive model. For the third order relative nonlinear coefficient δ′, however, the experiment data does not accord with the theoretical model. |
| format | Article |
| id | doaj-art-1ae8cf0870c74abd800d08b69190e1b1 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-1ae8cf0870c74abd800d08b69190e1b12025-02-03T01:07:00ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/457384457384Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic WavesHongjuan Yan0Chunguang Xu1Dingguo Xiao2Haichao Cai3School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaThe nonlinear wave motion equation is solved by the perturbation method. The nonlinear ultrasonic coefficients β and δ are related to the fundamental and harmonic amplitudes. The nonlinear ultrasonic testing system is used to detect received signals during tensile testing and bending fatigue testing of GH4169 superalloy. The results show that the curves of nonlinear ultrasonic parameters as a function of tensile stress or fatigue life are approximately saddle. There are two stages in relationship curves of relative nonlinear coefficients β′ and δ′ versus stress and fatigue life. The relative nonlinear coefficients β′ and δ′ increase with tensile stress when tensile stress is lower than 65.8% of the yield strength, and they decrease with tensile stress when tensile stress is higher than 65.8% of the yield strength. The nonlinear coefficients have the extreme values at 53.3% of fatigue life. For the second order relative nonlinear coefficient β′, there is good agreement between the experimental data and the comprehensive model. For the third order relative nonlinear coefficient δ′, however, the experiment data does not accord with the theoretical model.http://dx.doi.org/10.1155/2015/457384 |
| spellingShingle | Hongjuan Yan Chunguang Xu Dingguo Xiao Haichao Cai Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves Advances in Materials Science and Engineering |
| title | Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves |
| title_full | Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves |
| title_fullStr | Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves |
| title_full_unstemmed | Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves |
| title_short | Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves |
| title_sort | properties of gh4169 superalloy characterized by nonlinear ultrasonic waves |
| url | http://dx.doi.org/10.1155/2015/457384 |
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