Fatigue of biomaterials: Hard tissues
Fatigue of biomaterials: Hard tissues
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DOI：
10.1016/j.ijfatigue.2009.08.007
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发表时间：
2010-09-01
影响因子：
6
通讯作者：
Zhang, D.
中科院分区：
文献类型：
--
作者：
Arola, D.;Bajaj, D.;Zhang, D.
硬组织的疲劳和断裂行为是当今相当感兴趣的主题。这组特殊的有机材料包括矿化（大约50%的体积或更多的矿物）和人体的承重组织，它包括骨。牙骨质，牙本质和牙釉质。了解它们的疲劳行为以及负载条件和生理因素（如衰老和疾病）对降解机制的影响对于实现终身健康至关重要。但这个话题远不止眼前的医疗问题。表征硬组织的疲劳行为有许多挑战，其中大部分归因于尺寸限制和其微观结构的复杂性。成分对缺陷的类型和分布的相对重要性，合并的速度，以及它们对裂纹的产生和扩展的贡献，是尚未成熟的艰巨课题。硬组织也为工程材料的新微结构设计提供了学习的媒介和灵感来源。本文简要回顾了硬组织疲劳，并强调了当前的认识。挑战和未解决的问题(C) 2009 Elsevier Ltd版权所有
The fatigue and fracture behavior of hard tissues are topics of considerable interest today This special group of organic materials comprises the mineralized (roughly 50% mineral by volume or greater) and load-bearing tissues of the human body, it includes bone. cementum, dentin and enamel. An understanding of their fatigue behavior and the influence of loading conditions and physiological factors (e g aging and disease) on the mechanisms of degradation are essential for achieving lifelong health. But there is much more to this topic than the immediate medical issues. There are many challenges to characterizing the fatigue behavior of hard tissues, much of which is attributed to size constraints and the complexity of their microstructure The relative importance of the constituents on the type and distribution of defects, rate of coalescence, and their contributions to the initiation and growth of cracks, are formidable topics that have not reached maturity. Hard tissues also provide a medium for learning and a source of inspiration in the design of new microstructures for engineering materials. This article briefly reviews fatigue of hard tissues with shared emphasis on current understanding. the challenges and the unanswered questions (C) 2009 Elsevier Ltd All rights reserved