Mechanical Behavior of Sandwich Composites Under Three-Point Bending Fatigue

被引：0
|
作者：
K. Bey
K. Tadjine
R. Khelif
A. Chemami
M. Benamira
Z. Azari
机构：
[1] Laboratoire de Mécanique Industrielle,
[2] Département de Génie Mécanique,undefined
[3] Université Badji Mokhtar BP 12 Annaba 23000,undefined
[4] Laboratoire de Recherche en Risque Industriel/CND et Sécurité de Fonctionnement,undefined
[5] Département de Génie Mécanique,undefined
[6] Université Badji Mokhtar BP 12 Annaba 23000,undefined
[7] Laboratoire de Mécanique,undefined
[8] Biomécanique,undefined
[9] Polymère,undefined
[10] Structures (LaBPS)-ENIM,undefined
来源：
Mechanics of Composite Materials | 2015年 / 50卷
关键词：
sandwich; three-point bending; fatigue modulus; damage;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The mechanical behavior of sandwich composite materials in fatigue loading is investigated. Fatigue tests in three-point bending were conducted on two types of sandwich materials, [04] and [0/902/0]. The rupture mode observed on tested specimens showed a debond between the core and skins, as well as cracks in the core at 45∙ to the neutral axis of sandwich. Degradation of the rigidity modulus in fatigue was determined from the deflection equation for the two sandwiches. The experiments revealed that the modulus of the [04] sandwich degraded faster than that of [0/902/0]. The evolution of shear modulus in fatigue of both sandwiches is also described analytically using exponential and polynomial models.
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页码：747 / 756
页数：9
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