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Paper Information

Journal:   JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TABRIZ)   FALL 2006 , Volume 33 , Number 2 (44 MECHANICAL ENG.); Page(s) 1 To 9.
 
Paper: 

DETERMINATION OF FATIGUE PROPERTIES OF UNSYMMETRICAL SANDWICH COMPOSITES WITH GLASS/CARBON FACES AND PVC FOAM CORE USING A NEW DESIGN OF SAMPLE TEST GEOMETRY

 
 
Author(s):  ZABIHPOUR M., ADIB NAZARI SAEID, MOSLEMIAN R., ABEDIAN ALI
 
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Abstract: 

Fatigue properties of a unsymmetrical sandwich composites with glass/carbon faces and PVC foam core has been investigated. To determine fatigue properties of the sandwich laminate, first of all, the static strength tests must be conducted. On the other hand the sample test geometry must be designed such that the failure occurs in gauge zone for both case of static and fatigue tests. Two different type of foam/solid laminate interface geometry are considered. Based on static analysis of the two FEM models, critical points in the specimens causing static failure were explained. FEA and experiments results both give improvement of failure zone and strength values for oblique type design of gauge interface. The angle of the oblique design is 45 in degree. With such an efficient design fatigue tests were conducted. Fatigue properties of the laminate were determined and discussed. The pulverization observed within normal crack in the foam indicates that the main part of the laminate fatigue is spent in this type of damage.

 
Keyword(s): UNSYMMETRICAL SANDWICH COMPOSITES, FATIGUE PROPERTIES, CHARACTERIZATION TESTS
 
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