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Effect of Change Angle the Template used in Tests of Composite Materials on the Value of Modulus of Elasticity

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Abstract (2. Language): 
n this paper we study the effect of change angle the template in tests of composite materials on the value of modulus of elasticity. Used two models of templates the first acute angles and the second non- acute angles and used two specimens of a composite material in experiments. Many strain gauges has been installed on the template models in the region of maximum stress is expected and the other near the edges of the template, in testing the equipment’s used were equipment’s tensile testing of materials. From the results has been reached that the acute angle to the edge of the template affect the results of a strain gauges which installed in the region of maximum stress and which negatively affects the value of the stress intensity. The results indicated that the value of modulus of elasticity when the template is a non-sharp angle more accurate than the results obtained when the sharp angle of the template, the reason is that some of the stress is lost near the edge of the template. The results obtained in the models we obviously in ANSYS program were identical with the results obtained from the models used in the experiments
19-23