Mechanical Design

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Browsing Mechanical Design by Author "Adem, Esmael"

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    Mechanical Characterization of E-Glass Reinforced with Epoxy & polyester Composite for Automotive body Application
    (Addis Ababa University, 2013-11) Adem, Esmael; Gebrekidan, Ermias (PhD)
    Mechanical Characterization of E-glass Reinforced with epoxy and Polyester Composite for Automotive Body Application Esmael Adem Addis Ababa University, 2013 Experimental characterization of the mechanical properties of E-glass/Epoxy & E-glass/Polyester composite was conducted. The objectives of this paper is to present processing techniques of specimen preparation, conducting experiment to obtain mechanical properties of this composite structure and conduct experimental observation using Scanning Electron Microscopy (SEM) to know inhomogeneity, porosity and fracture behavior. The effect of strain rate on E-glass/epoxy and E-glass/polyester has been investigated & experimentation was performed to determine property data for material specifications. E-glass/polyester laminates were obtained by compression molding process and E-glass/epoxy laminate by hand lay-up vacuum assisted technique. The composite laminates were cut to obtain ASTM standards. This investigation deals with the testing of tensile, compression, shear and flexural strength on a universal testing machine. The graphs that are obtained from the tests were documented. This research indicates that the mechanical properties are mainly dependent on the strain rate. It can be conclude from the result that E-glass/Epoxy show better property with the increase of strain rate, so this material is suitable for structural automotive body panel applications. Key words: Composite, Automotive, strain rate, ASTM, Mechanical tests