Abstract

The objective of this study is to compare the mechanical properties, static and quasidynamic fracture toughness for glass ceramics using dome port cover of ramjet engine system. Static and quasi-dynamic tests were conducted using SENB specimens (Single Edge Notched Beam). Strain rate of static fracture toughness in very low and that of quasi-dynamic fracture toughness is 0.04 m/sec at MTS 810. The specimens of the respective materials are machined according to the various notch radii using SENB method. The static and quasi-dynamic fracture toughness according to the various notch radii are evaluated using the ASTM and straingage method. The evaluation method of static and quasi-dynamic fracture toughness are validated using the straingage method for two materials.

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