5 research outputs found
Mechanical properties of coconut shell powder reinforced PVC composites in automotive applications / Muhammad Hanafi Md Sah … [et al.]
No full textCoconut shell powder (CSP) (which is used in reinforced Polyvinyl Chloride (PVC)) is one of the possible candidates of materials suitable as automotive components; however, appropriate tests need to be done to evaluate whether it meets all requirements. CSP-reinforced composites are made with PVC matrix within the range of 0 - 20 phr and the effect of the reinforcement of the natural fibres on the mechanical behaviour of PVC has been analysed. Both Universal Tensile Machines and Impact Testing Machines are used to determine the mechanical properties of CSP/PVC composites (such as the tensile, flexural and impact strength as well as its modulus of elasticity). The experimental results indicated that tensile strength, impact strength and flexural strength improved by 42%, 25% and 23%, respectively, when compared to the pure system
Mechanical properties of coconut shell powder reinforced PVC composites in automotive applications
No full textCoconut shell powder (CSP) (which is used in reinforced Polyvinyl Chloride
(PVC)) is one of the possible candidates of materials suitable as automotive
componentshowever, appropriate tests need to be done to evaluate whether
it meets all requirements. CSP-reinforced composites are made with PVC
matrix within the range of 0 - 20 phr and the effect of the reinforcement of the
natural fibres on the mechanical behaviour of PVC has been analysed. Both
Universal Tensile Machines and Impact Testing Machines are used to
determine the mechanical properties of CSP/PVC composites (such as the
tensile, flexural and impact strength as well as its modulus of elasticity). The
experimental results indicated that tensile strength, impact strength and
flexural strength improved by 42%, 25% and 23%, respectively, when
compared to the pure system
Thermal conductivity and specific heat capacity of different compositions of Yttria stabilized zirconia-nickel mixtures
No full textCeramic-metal composites also known as functionally gradient materials (FGM) are composite materials which are fabricated in order to have a gradual variation of constituent materials’ thermal and mechanical properties so as to have a smooth variation of the material properties in order to improve the overall performance and reduce the thermal expansion mismatch between ceramic and metal. The objective of the study is to determine the thermal properties of various percentage composition of Yttria stabilized zirconia-Nickel mixtures for application as thermal barrier coating materials in automotive turbocharger turbine volute casing. Specific heat capacity of different percentage composition of ceramic-metal powder composite were determined using DSC822 differential scanning calorimeter (Mettle Tolodo, Switzerland) at temperature ranges between 303K to 873K. While the thermal conductivity of the different percentage composition of ceramic-metal composite structures were determined using P5687 Cussons thermal conductivity apparatus (Manchester, UK) which uses one-dimensional steady-state heat conduction principle. The results have indicated that the specific heat capacity of the FGM increases sharply with an increase in temperature while the thermal conductivity of the FGM decreases with an increase in temperature. These results strongly agree with the theoretical and experimental values as well as the rule of mixtures obtainable in literature, which indicated the suitability of these FGM materials for thermal barrier coating applications
Simulation study on electric turbo-compound (ETC) for thermal energy recovery in turbocharged internal combustion engine
No full textExhaust gas heat utilization in the form of Thermal Energy Recovery (TER) has attracted a major interest due to its potentials with Internal Combustion Engines (ICE). Recovering useful energy, for example in the form of electrical power from the engine exhaust waste heat could benefit in the form of direct fuel economy or increase in the available electric power for the auxillary systems. The methodology in this paper includes the assessment of each waste heat recovery technology based on the current research and development trends for automotive application. It also looked into the potential for energy recovery, performances of each technology and factors affecting its implementation. Finally, the work presents an Electric Turbo Compounding (ETC) simulation using a Ford Eco-Boost as a baseline engine modeled with the 1-Dimensional AVL Boost software. A validated 1-D engine model was used to investigate the impact on the Brake Specific Fuel Consumption (BSFC) and Brake Mean Effective Pressure (BMEP) at full load. This paper presents some reviews on the turbo-compounding method and also the modelling efforts and results of an electric turbo-compounding system. Modelling shows that the turbo-compounding setup can be more beneficial than turbo-charging alone
Technologies for waste heat energy recovery from internal combustion engine: a review
No full textThe diesel engine has always been the most efficient internal combustion engine available with thermal efficiency in the range of 40 to 45%; most of the losses come from the exhaust, through coolant, and by direct convection and radiation to the environment. Significant technologies such as Thermoelectric Generator (TEG), Bottoming Cycles and Turbo-compounding have been developed to recover exhaust heat and turn it into useful energy such as electricity. Energy recovery in the marine sector mainly focused in slow and large two or four stroke diesel engine. Therefore the main objective of this paper is to review each waste heat recovery technology based on latest developments, research trends and feasibility of adopting it into high power diesel engine application. The purpose of this paper was to compare different energy recoveries, performances of each technology and other factors effecting the application. It is hoped that this paper will become a guide in selecting waste heat recovery application on board marine vessel that use high power diesel engine as prime movers or power generating plants
