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Fatigue life prediction based on variable amplitude tests - Specific applications
Three engineering components have been tested with both constant amplitude loading and with different load spectra and the results are analysed by means of a new evaluation method. The method relies on the Palmgren-Miner hypothesis, but offers the opportunity to approve the hypothesis validity by narrowing the domain of its application in accordance with a specific situation. In the first case automotive spot weld components are tested with two different synthetic spectra and the result is extrapolated to new service spectra. In the second case, the fatigue properties of a rock drill component are analysed both by constant amplitude tests and by spectrum tests and the two reference test sets are compared. In the third case, butt welded mild steel is analysed with respect to different load level crossing properties and different irregularity factors.
Fatigue life prediction based on variable amplitude tests - Specific applications
Three engineering components have been tested with both constant amplitude loading and with different load spectra and the results are analysed by means of a new evaluation method. The method relies on the Palmgren-Miner hypothesis, but offers the opportunity to approve the hypothesis validity by narrowing the domain of its application in accordance with a specific situation. In the first case automotive spot weld components are tested with two different synthetic spectra and the result is extrapolated to new service spectra. In the second case, the fatigue properties of a rock drill component are analysed both by constant amplitude tests and by spectrum tests and the two reference test sets are compared. In the third case, butt welded mild steel is analysed with respect to different load level crossing properties and different irregularity factors.
Fatigue life prediction based on variable amplitude tests - Specific applications
Svensson, Thomas (author) / Johannesson, Par (author) / Mare, Jacques De (author)
2005
8 Seiten, 8 Quellen
Conference paper
English
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