Studies on Effect of Loading Rate of Hybrid Glass/Carbon Composites Subjected to Open Hole Tensile Test
Authors
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Department of Mechanical Engineering, Ramaiah Institute of Technology, MSR Nagar, MSR Road, Bangalore – 560054, Karnataka ,IN
Deepak R. -
Department of Mechanical Engineering, Ramaiah Institute of Technology, MSR Nagar, MSR Road, Bangalore – 560054, Karnataka ,INSunith Babu L.
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Department of Mechanical Engineering, Ramaiah Institute of Technology, MSR Nagar, MSR Road, Bangalore – 560054, Karnataka ,INPradeep Kumar K. V.
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Department of Mechanical Engineering, Ramaiah Institute of Technology, MSR Nagar, MSR Road, Bangalore – 560054, Karnataka ,INSumanth R.
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Department of Mechanical Engineering, Ramaiah Institute of Technology, MSR Nagar, MSR Road, Bangalore – 560054, Karnataka ,INPrateek M. U.
DOI:
https://doi.org/10.18311/jmmf/2023/33355Keywords:
Open Hole Tensile Test, Peak Force, Loading Rate, Polymer Composites, Ultimate Tensile StrengthAbstract
Composite materials are used in aerospace and automotive industries since these materials are ideal candidates for highstrength- to-weight ratio applications. Further, hybrid composites provide specific benefits as per the required application. Any structures that are developed from the composite materials are not fabricated in one go and often require joining of multiple parts leading to development of one large structure. In such a scenario, joining is often achieved through the drilling of holes and in turn through bolted connections. In this article, the tensile strength of the hybrid glass carbon composite is tested in a UTM of 50kN capacity of Wance make for an open hole process using the ASTM D5766 standard, and its corresponding failure mechanism is studied with varying loading rates (1, 5, 10 mm/min). The test results indicate that with increase in loading rate, there is an increase in tensile strength of the composite panel with open hole configuration. The majority of the failure mechanism was attributed to matrix failure followed by fiber debonding at the hole region for higher loading rate, which is also the prime factor as per the ASTM standard. These results help developers to determine the failure process which in turn help in evolving a better composite structure for a specific application.
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