Abstract
While various expected and accepted interpretations of the term “fatigue behavior” exist for homogeneous materials, especially metals, “fatigue behavior” of composite materials is not well defined—or understood. Generally speaking, one can discuss that topic by addressing the change in residual strength, life, and stiffness during cyclic (or otherwise variable) load histories. The present discussion will begin by defining the “problem” of fatigue behavior of composite materials, after which a representative spectrum of physical observations will be cited and models of the behavior presented. Both unnotched and notched behavior will be discussed. A brief section will deal with interpretations of data and statistical data handling schemes. Frontiers of the field will be identified. While the paper is presented in the spirit of a discussion of physical behavior rather than a review of the literature, representative work of numerous investigators is cited.
Résumé
Bien qu'il existe des interprétations variées et largement acceptées du terme de “comportement en fatigue” dans le das des matériaux homogènes, notamment les métaux, le comportement en fatigue des matériaux composites n'est pas bien défini voire compris. D'une manière générale, on peut aborder ce sujet en prenant en considération le changement de résistance résiduelle, la vie, et la rigidité au cours de Mistoire des contraintes cycliques ou tout du moins variables. La présente discussion commence à définir le “problème” du comportement en fatigue des matériaux composites suivant lequel un spectre représentatif d'observations physiques peut être invoqué et des modèles de comportement présentés. On discute le comportement à l'état non entaillé et à l'état entaillé. Un chapître spécial est relatif à l'interprétation des données et les schémas de traitement des données statistiques. Bien que le mémoire soit présenté dans l'esprit d'une discussion sur un comportement physique plutôt que dans 1'esprit d'une revue de la littérature, les travaux de nombreux chercheurs sont cités sous référence.
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Reifsnider, K. Fatigue behavior of composite materials. Int J Fract 16, 563–583 (1980). https://doi.org/10.1007/BF02265218
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DOI: https://doi.org/10.1007/BF02265218