Experimental Design and Validation of an Accelerated Random Vibration Fatigue Testing Methodology
Novel accelerated random vibration fatigue test methodology and strategy are proposed, which can generate a design of the experimental test plan significantly reducing the test time and the sample size. Based on theoretical analysis and fatigue damage model, several groups of random vibration fatigu...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/147871 |
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| _version_ | 1832552195485073408 |
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| author | Yu Jiang Gun Jin Yun Li Zhao Junyong Tao |
| author_facet | Yu Jiang Gun Jin Yun Li Zhao Junyong Tao |
| author_sort | Yu Jiang |
| collection | DOAJ |
| description | Novel accelerated random vibration fatigue test methodology and strategy are proposed, which can generate a design of the experimental test plan significantly reducing the test time and the sample size. Based on theoretical analysis and fatigue damage model, several groups of random vibration fatigue tests were designed and conducted with the aim of investigating effects of both Gaussian and non-Gaussian random excitation on the vibration fatigue. First, stress responses at a weak point of a notched specimen structure were measured under different base random excitations. According to the measured stress responses, the structural fatigue lives corresponding to the different vibrational excitations were predicted by using the WAFO simulation technique. Second, a couple of destructive vibration fatigue tests were carried out to validate the accuracy of the WAFO fatigue life prediction method. After applying the proposed experimental and numerical simulation methods, various factors that affect the vibration fatigue life of structures were systematically studied, including root mean squares of acceleration, power spectral density, power spectral bandwidth, and kurtosis. The feasibility of WAFO for non-Gaussian vibration fatigue life prediction and the use of non-Gaussian vibration excitation for accelerated fatigue testing were experimentally verified. |
| format | Article |
| id | doaj-art-f5bde6c04995403cb5f00d8f71118660 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-f5bde6c04995403cb5f00d8f711186602025-02-03T05:59:29ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/147871147871Experimental Design and Validation of an Accelerated Random Vibration Fatigue Testing MethodologyYu Jiang0Gun Jin Yun1Li Zhao2Junyong Tao3Science and Technology on Integrated Logistics Support Laboratory, College of Mechatronic Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, ChinaDepartment of Civil Engineering, The University of Akron, Akron, OH 44321, USADepartment of Civil Engineering, The University of Akron, Akron, OH 44321, USAScience and Technology on Integrated Logistics Support Laboratory, College of Mechatronic Engineering and Automation, National University of Defense Technology, Changsha, Hunan 410073, ChinaNovel accelerated random vibration fatigue test methodology and strategy are proposed, which can generate a design of the experimental test plan significantly reducing the test time and the sample size. Based on theoretical analysis and fatigue damage model, several groups of random vibration fatigue tests were designed and conducted with the aim of investigating effects of both Gaussian and non-Gaussian random excitation on the vibration fatigue. First, stress responses at a weak point of a notched specimen structure were measured under different base random excitations. According to the measured stress responses, the structural fatigue lives corresponding to the different vibrational excitations were predicted by using the WAFO simulation technique. Second, a couple of destructive vibration fatigue tests were carried out to validate the accuracy of the WAFO fatigue life prediction method. After applying the proposed experimental and numerical simulation methods, various factors that affect the vibration fatigue life of structures were systematically studied, including root mean squares of acceleration, power spectral density, power spectral bandwidth, and kurtosis. The feasibility of WAFO for non-Gaussian vibration fatigue life prediction and the use of non-Gaussian vibration excitation for accelerated fatigue testing were experimentally verified.http://dx.doi.org/10.1155/2015/147871 |
| spellingShingle | Yu Jiang Gun Jin Yun Li Zhao Junyong Tao Experimental Design and Validation of an Accelerated Random Vibration Fatigue Testing Methodology Shock and Vibration |
| title | Experimental Design and Validation of an Accelerated Random Vibration Fatigue Testing Methodology |
| title_full | Experimental Design and Validation of an Accelerated Random Vibration Fatigue Testing Methodology |
| title_fullStr | Experimental Design and Validation of an Accelerated Random Vibration Fatigue Testing Methodology |
| title_full_unstemmed | Experimental Design and Validation of an Accelerated Random Vibration Fatigue Testing Methodology |
| title_short | Experimental Design and Validation of an Accelerated Random Vibration Fatigue Testing Methodology |
| title_sort | experimental design and validation of an accelerated random vibration fatigue testing methodology |
| url | http://dx.doi.org/10.1155/2015/147871 |
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