Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigue
Gigacycle fatigue properties of materials are strongly affected by the specimen risk volume (volume of material subjected to a stress amplitude larger than the 90% of the maximum stress). Gigacycle fatigue tests, performed with ultrasonic fatigue testing machines, are commonly carried out by using h...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2013-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero26/numero_26_art_6.pdf |
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| _version_ | 1841562625110966272 |
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| author | A. Tridello D.S. Paolino G. Chiandussi M. Rossetto |
| author_facet | A. Tridello D.S. Paolino G. Chiandussi M. Rossetto |
| author_sort | A. Tridello |
| collection | DOAJ |
| description | Gigacycle fatigue properties of materials are strongly affected by the specimen risk volume (volume of material subjected to a stress amplitude larger than the 90% of the maximum stress). Gigacycle fatigue tests, performed with ultrasonic fatigue testing machines, are commonly carried out by using hourglass shaped specimens with a small risk volume. The adoption of traditional dog-bone specimens allows for increasing the risk volume, even if the increment is quite limited. In order to obtain larger risk volumes, a new specimen shape is proposed (Gaussian specimen). The dog-bone and the Gaussian specimens are compared through Finite Element Analyses and the numerical results are validated experimentally by means of strain gages measurements. The range of applicability of the two different specimens in terms of available risk volume and stress concentration effects due to the cross section variation is determined. |
| format | Article |
| id | doaj-art-1a3992b25ce0477c9fdf60549066b842 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2013-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-1a3992b25ce0477c9fdf60549066b8422025-01-03T00:45:54ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932013-10-01726495610.3221/IGF-ESIS.26.06Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigueA. TridelloD.S. PaolinoG. ChiandussiM. RossettoGigacycle fatigue properties of materials are strongly affected by the specimen risk volume (volume of material subjected to a stress amplitude larger than the 90% of the maximum stress). Gigacycle fatigue tests, performed with ultrasonic fatigue testing machines, are commonly carried out by using hourglass shaped specimens with a small risk volume. The adoption of traditional dog-bone specimens allows for increasing the risk volume, even if the increment is quite limited. In order to obtain larger risk volumes, a new specimen shape is proposed (Gaussian specimen). The dog-bone and the Gaussian specimens are compared through Finite Element Analyses and the numerical results are validated experimentally by means of strain gages measurements. The range of applicability of the two different specimens in terms of available risk volume and stress concentration effects due to the cross section variation is determined.http://www.gruppofrattura.it/pdf/rivista/numero26/numero_26_art_6.pdfVery-high-cycle fatigueUltrasonic testing machineRisk volumeWave propagation equationsStress concentration factor |
| spellingShingle | A. Tridello D.S. Paolino G. Chiandussi M. Rossetto Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigue Fracture and Structural Integrity Very-high-cycle fatigue Ultrasonic testing machine Risk volume Wave propagation equations Stress concentration factor |
| title | Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigue |
| title_full | Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigue |
| title_fullStr | Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigue |
| title_full_unstemmed | Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigue |
| title_short | Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigue |
| title_sort | comparison between dog bone and gaussian specimens for size effect evaluation in gigacycle fatigue |
| topic | Very-high-cycle fatigue Ultrasonic testing machine Risk volume Wave propagation equations Stress concentration factor |
| url | http://www.gruppofrattura.it/pdf/rivista/numero26/numero_26_art_6.pdf |
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