This paper will describe a method for design durability qualification of automotive components based on the use of edited multi-axial real time load histories. Fatigue analysis methods are used to access and compare the fatigue damage imposed by the various parts of the parent durability test cycle. No damaging portions of the cylce are removed resulting in a test cycle that can faithfully reproduce the original test cycle in much less time and at greatly reduced expense. An accelerated test cycle such as this, is not only valuable for the durability qualification of a design but is also useful during the development process. Due to the acclerated nature of this method, decisions can be based on the results of a significant sample size rather than on one or two tests. Statistical sampling methods can thus be employed. A method is proposed to qualify automotive component designs in the laboratory using multiaxial real time load/strain input data acquired in the field. Fatigue damage analysis methods are used to edit the field data to produce an accelerated test cycle that retains all of the damaging real time load histories present in the original test cycle. Use of this procedure can contribute to a significant reduction in product design/development time.
The development of accelerated component durability test cycles using fatigue sensitive editing techniques
Entwicklung einer beschleunigten Lebensdauerprüfung für Kraffahrzeugteile mit Hervorhebung der dauerfestigkeitskritischen Angaben der Betriebsbelastung
SAE-Papers ; 1-11
1992
11 Seiten, 12 Bilder, 6 Quellen
Conference paper
English
Automotive engineering | 1992
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