Abstract
Weibull theory works well for brittle materials. However, its application to composites is not very clear. The present study is a comparative parametric evaluation of flexural and tensile strength ratios, and fiber bundle stresses of axial composites with brittle fiber bundles. A composite based model that utilizes Weibull’s theory is developed and compared with derived Weibull’s theory for brittle fiber bundles. It was found that the predicted strength ratios and the stresses are of similar magnitude to that of Weibull’s and the model converges to unity for composite materials with little or no variability.
Highlights
Carbon composites are used in many applications such as in beam design, aircraft, helicopter rotor blades and fishing rods [1, 2]
Flexure, and combination of both are of considerable practical interest in predicting the tensile and flexural strength of composites
Strength prediction of composite components subjected to Mohammed Faruqi and Ankur Patel: A Parametric Evaluation of Flexural and Tensile Strength Ratios, and Bundle
Summary
Carbon composites are used in many applications such as in beam design, aircraft, helicopter rotor blades and fishing rods [1, 2]. According to Tsai [4] unidirectional composites with higher stiffness have lower strength in tension than bending and the stiffness is controlled by stress-strain relationship. Flexure, and combination of both are of considerable practical interest in predicting the tensile and flexural strength of composites. As per Weibull statistical strength theory, strength is higher in bending than tension [7]. Strength prediction of composite components subjected to Mohammed Faruqi and Ankur Patel: A Parametric Evaluation of Flexural and Tensile Strength Ratios, and Bundle. Stresses of Axial Composites Using Weibull’s Theory tension, flexure, or a combination of both are of considerable practical interest. This study makes a basic first attempt to parametrically study the flexural and tensile strength ratios, and bundle stresses of axial composites with brittle fiber bundles
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