Mechanical Behavior of Sandwich Composites Under Three-Point Bending Fatigue

Autor:	Zitouni Azari, A. Chemami, K. Tadjine, M. Benamira, K. Bey, R. Khelif
Rok vydání:	2015
Předmět:	Materials science Polymers and Plastics Three point flexural test General Mathematics Modulus Condensed Matter Physics Biomaterials Shear modulus Mechanics of Materials Deflection (engineering) Solid mechanics Fatigue loading Ceramics and Composites Composite material Neutral axis
Zdroj:	Mechanics of Composite Materials. 50:747-756
ISSN:	1573-8922 0191-5665
DOI:	10.1007/s11029-015-9464-0
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bede912040f5fd999f2fd11dd96bbb5a https://doi.org/10.1007/s11029-015-9464-0 Zobrazit plný text záznamu Plný text ve formátu PDF