Energy approach for the fatigue of thermoviscoelastic materials: Application to asphalt materials in pavement surface layers

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• 作者：M. Boudabbous^a ; ^b ; A. Millien^a ; C. Petit^a ; ^{christophe.petit@unilim.fr} ; J. Neji^b
• 关键词：Fatigue ; Dissipated energy ; Thermoviscoelastic material ; Damage ; Intrinsic law
• 刊名：International Journal of Fatigue
• 出版年：2013
• 出版时间：February, 2013
• 年：2013
• 卷：47
• 期：Complete
• 页码：308-318
• 全文大小：1944 K

文摘

This paper focuses on a study of the dissipated energy approach according to two methods, i.e. cumulative energy and the ratio of dissipated energy. An experimental investigation has been performed, with a double shear cyclic test of asphalt material HMA 0/6 being chosen at a 10 Hz frequency, 10 ¡ãC and 20 ¡ãC and at various force or displacement loading levels. A comparison between the two fatigue characterization methods shows that cumulative energy yields an intrinsic fatigue law that can be further developed to obtain other relations between different loading modes: displacement or force loading. Thanks to this paper, users are able to define the fatigue law in other loading-controlled modes than those introduced during the tests analyzed to identify fatigue parameters. The possibility is available to obtain a fatigue law independent of loading mode and representative of a real loading evolution in the field.