304L stainless steel fatigue evaluation using dynamic mechanical analysis

In order to evaluate the fatigue effects on 304L Stainless Steel, the internal friction or damping of the material have been investigated by means of dynamic mechanical analysis (DMA), using single cantilever test modes. Before DMA measurement, the 304L plates are loaded with different cycle number...

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Main Authors: D. Rao, Y. Shen
Format: Article
Language:English
Published: Ubiquity Press 2018-09-01
Series:Ubiquity Proceedings
Subjects:
Online Access:https://account.ubiquityproceedings.com/index.php/up-j-up/article/view/41
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author D. Rao
Y. Shen
author_facet D. Rao
Y. Shen
author_sort D. Rao
collection DOAJ
description In order to evaluate the fatigue effects on 304L Stainless Steel, the internal friction or damping of the material have been investigated by means of dynamic mechanical analysis (DMA), using single cantilever test modes. Before DMA measurement, the 304L plates are loaded with different cycle number and stress amplitude to simulate different fatigue condition. The amplitude dependant internal friction (ADIF) of 304L small sample is measured. It shows that the ADIF curves of DMA are associated with the pre-fatigue loading. One ADIF peak is observed near the critical strain amplitude. The DMA data of different pre-stressed samples (cyclic stress amplitude from ±80MPa to ±200MPa) show that the height of ADIF peak increases with the pre stress value. The mechanism of the peak is discussed in the paper. The results indicate that a clear correlation exists between fatigue condition and internal friction curve, so that the fatigue behaviour of 304L stainless steel can be evaluated from DMA measurements.
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spelling doaj.art-4644dd031bd64554a5f67baf538c1a682024-01-18T05:31:39ZengUbiquity PressUbiquity Proceedings2631-56022018-09-011S1414110.5334/uproc.418304L stainless steel fatigue evaluation using dynamic mechanical analysisD. Rao0Y. Shen1School of Mechanical Engineering, Shanghai Jiao Tong UniversitySchool of Mechanical Engineering, Shanghai Jiao Tong UniversityIn order to evaluate the fatigue effects on 304L Stainless Steel, the internal friction or damping of the material have been investigated by means of dynamic mechanical analysis (DMA), using single cantilever test modes. Before DMA measurement, the 304L plates are loaded with different cycle number and stress amplitude to simulate different fatigue condition. The amplitude dependant internal friction (ADIF) of 304L small sample is measured. It shows that the ADIF curves of DMA are associated with the pre-fatigue loading. One ADIF peak is observed near the critical strain amplitude. The DMA data of different pre-stressed samples (cyclic stress amplitude from ±80MPa to ±200MPa) show that the height of ADIF peak increases with the pre stress value. The mechanism of the peak is discussed in the paper. The results indicate that a clear correlation exists between fatigue condition and internal friction curve, so that the fatigue behaviour of 304L stainless steel can be evaluated from DMA measurements.https://account.ubiquityproceedings.com/index.php/up-j-up/article/view/41dynamic mechanical analysis (dma)fatigueamplitude dependant internal friction304l stainless steel
spellingShingle D. Rao
Y. Shen
304L stainless steel fatigue evaluation using dynamic mechanical analysis
Ubiquity Proceedings
dynamic mechanical analysis (dma)
fatigue
amplitude dependant internal friction
304l stainless steel
title 304L stainless steel fatigue evaluation using dynamic mechanical analysis
title_full 304L stainless steel fatigue evaluation using dynamic mechanical analysis
title_fullStr 304L stainless steel fatigue evaluation using dynamic mechanical analysis
title_full_unstemmed 304L stainless steel fatigue evaluation using dynamic mechanical analysis
title_short 304L stainless steel fatigue evaluation using dynamic mechanical analysis
title_sort 304l stainless steel fatigue evaluation using dynamic mechanical analysis
topic dynamic mechanical analysis (dma)
fatigue
amplitude dependant internal friction
304l stainless steel
url https://account.ubiquityproceedings.com/index.php/up-j-up/article/view/41
work_keys_str_mv AT drao 304lstainlesssteelfatigueevaluationusingdynamicmechanicalanalysis
AT yshen 304lstainlesssteelfatigueevaluationusingdynamicmechanicalanalysis