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Rolling Ball Contact As A Method For Testing Surface Fatigue Of Resin Based Restorative Materials, Noor Hayaty Abu Kasim Abu Kasim N.H.
Rolling Ball Contact As A Method For Testing Surface Fatigue Of Resin Based Restorative Materials, Noor Hayaty Abu Kasim Abu Kasim N.H.
Noor Hayaty Abu Kasim Abu Kasim N.H.
It has been recognised that compressive, tensile and flexural strength do not accurately determine the durability of dental restorations and that fatigue induced failure plays an important role. Fatigue caused by cyclic loading is thought to be responsible for the failure of composites restorations described by chipping, localized or generalized wear and fracture. The main aim of this work is to develop and evaluate the rolling ball contact as a method for testing surface fatigue of resin-based restorative materials. The results showed that material loss during the testing period mimic that of a fatigue failure process occurring in rolling elements. …
Fabrication Of 316l Stainless Steel Parts By Injection Moulding For Biomedical Application Using A Novel Binder, Noor Hayaty Abu Kasim Abu Kasim N.H.
Fabrication Of 316l Stainless Steel Parts By Injection Moulding For Biomedical Application Using A Novel Binder, Noor Hayaty Abu Kasim Abu Kasim N.H.
Noor Hayaty Abu Kasim Abu Kasim N.H.
This paper focuses on the usage of a novel binder system base on palm oil product to produce sintered parts of stainless steel 316L produced by vertical injection molding technique for biomedical application. The stainless steel 316L powder was mixed using z-blade mixer with the thermoplastic binder system comprising of polyethylene, paraffin wax, stearic acid and palm stearin which was derived from palm oil at different volume percent (%). The feedstock then was studied in term of viscosity and shear rate using capillary rheometer. The feedstock was molded using vertical injection molding machine. After molding, the green molded part was …