Volume 15, Issue 4 (2015)                   Modares Mechanical Engineering 2015, 15(4): 51-57 | Back to browse issues page

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1- MSc/Tarbiat modares university
2- Tarbiat Modarres Univ
3- MSc/Tarbiat modares univercity
Abstract:   (3918 Views)
In this paper, the behavior of sandwich structures with composite skins and the core that consists of foam and a corrugated composite laminate under compressive load is investigated experimentally. Three geometrical shapes including square, trapezoid and triangle forms are considered for corrugated composite laminate and results are compared with reference specimen with simple core that is made of foam. Skins and corrugated composite laminate are made from woven glass and epoxy resin; and PVC foam is used in core. Corrugated composite laminate are built using the hand layup method and vacuum assisted resin transfer molding technique is used to join the skins to the core. In order to experimental accuracy of test; three same samples have been product for each type of core shapes and the average of data’s test have been used for comparing the results. The edgewise compressive test based on ASTM is used to perform the experimental test. The results show that set corrugated laminate composite in core improves the mechanical properties (such as compressive strength, axial stiffness, toughness) and the ratio of mechanical properties to weight of these structures to a large extent, Also by approaching to square shape the structure have more favorable properties. The results have shown that compressive strength is increased from 188.56% (triangle core) to 362.37% (square core) and the ratio of compressive strength to weight is increased from 92.36% (triangle core) to 141.4% (square core).
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Article Type: Research Article | Subject: Stress Analysis
Received: 2014/12/8 | Accepted: 2015/01/27 | Published: 2015/02/17