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Full-Text Articles in Engineering
Manufacturing And Characterization Of Glass Fiber-Fishnet-Woven Roving And Polyester Composites, S. Sahaya Elsi, F. Michael Raj, Mary S. Prince, A. Amala Mithin Minther Singh, R. S. Jayaram
Manufacturing And Characterization Of Glass Fiber-Fishnet-Woven Roving And Polyester Composites, S. Sahaya Elsi, F. Michael Raj, Mary S. Prince, A. Amala Mithin Minther Singh, R. S. Jayaram
Journal of Marine Science and Technology
Glass fibers are imparted as reinforcement material in polyester matrix and still it act as a preferred material for the marine industry. However, it is non-biodegradable material and involves high risk during processing. In this study, new monofilament fishnets were substituted as an alternative material for glass fiber in the polyester matrix. Mechanical properties of these composite specimens such as tensile strength, flexural strength and impact resistance in accordance with ASTM, were evaluated. SEM images of various composites revealed the relations between the reinforced fishnet/glass fiber and woven roving with polyester matrix. The dynamic mechanical analysis of storage modulus, loss …
Effect Of Cooling Rate During Solution Heat Treatment On The Microstructure And Mechanical Properties Of Sp-700 Titanium Alloys, Jo-Kuang Nieh, Chih-Ting Wu, Yen-Lin Chen, Chao-Nan Wei, Sheng-Long Lee
Effect Of Cooling Rate During Solution Heat Treatment On The Microstructure And Mechanical Properties Of Sp-700 Titanium Alloys, Jo-Kuang Nieh, Chih-Ting Wu, Yen-Lin Chen, Chao-Nan Wei, Sheng-Long Lee
Journal of Marine Science and Technology
The relationship between the microstructures and the mechanical properties of solution-treated SP-700 titanium alloys, as obtained with different cooling rates, was investigated. The results indicate that the water-quenched alloy contains the primary (p), ”-martensite and residual (r) phases. Aging heat treatment can convert both ”-martensite and the r phases to the fine-grained + equilibrium phases, resulting in a significant increase in tensile strength and hardness. Both the air-cooled and furnace-cooled alloys consist of the p, and phases. The air-cooled alloy containing the fine-grained phase has relatively higher hardness. Aging heat treatment causes only …
Study On Mechanical Properties Of A356 Alloys Enhanced With Preformed Thixotropic Structure, Shueiwan H. Juang, Shyh-Ming Wu
Study On Mechanical Properties Of A356 Alloys Enhanced With Preformed Thixotropic Structure, Shueiwan H. Juang, Shyh-Ming Wu
Journal of Marine Science and Technology
A preformed A356 alloys with thixotropic structure (designated SSM-A356) was systematically studied on mechanical properties in order to establish the database for further investigations in forming and heat treatment. Because of the specific microstructure and characteristics, the heat treatment conditions of SSM-A356 were explored through the observations of microstructure and the measurement of micro-hardness. In the investigation of heat treatment, it was observed that the eutectic silicon was refined and spheroidized which is unlikely for conventional processing. The mechanical testing results showed that the yield and ultimate tensile strength of SSM-A356 were respectively around 115% and 34% greater than those …