This paper presents a number of experimental data and techniques used in performance of commercial and palm slag motorcycle brake pads. The experiments include wear and hardness tests. The wear behavior of motorcycle brake pad that was observed in the study on sliding contact member brake discs results in the conversion of kinetic energy into heat at the pad and disc interface leads to this investigation. The effects of speed of disc brake rotor are presented. Experimental results of the respective tests are presented on two motorcycle brake pads, namely commercial brake pad (CBP) and palm slag brake pad (PBP). It was found that the wear behavior of palm slag brake pad is influenced by design of geometry shape of motorcycle brake pad. The wear behavior of CBP and PBP composite depend on wet and dry condition. It is clearly seen that wear behavior of PBP composite increase significantly with dry condition. Wear behavior increase significantly with the increase of rotor speed. With increasing speed of rotor disc, the hardness of PBP composite changes from low hardness to a more stable hardness behavior.
Mechanical Engineering, Universitas Riau, Indonesia.
Modern gas turbine blade is internally cooled to maintain its temperature at safe level. Prediction of mass flow distribution in cooling passage of the turbine blade helps in predicting turbine blade temperature during the design stage. In this current paper, commercial software FLUENT 6.2 is used to predict mass flow distribution in the gas turbine blade cooling passages (like leading edge passage, serpentine passage, trailing edge passage, lateral ejection, tip and film cooling holes) with standard k-ε and RNG k-ε turbulence models. Model suitable to solve such problem requires huge computational resources. Although present model are not suitable for the problem considered but will help to get approximate results and will also indicate capability of CFD. Results are compared with experimental results. Result showed good agreement of predicted mass flow distribution with experimental results. RNG k-ε model shows slight improvement in prediction of the supply pressure over other two models.
Mechanical Engineering, J. S. P. M’s Rajarshi Shahu College Of Engineering, Savitribai Phule Pune University, Pune, India
Solar, Wind and Ocean Thermal Energy Conversion (SWOTEC) is a clean marine renewable energy using temperature difference between the sea surface and the deep ocean to rotate a generator to produce electrical energy. Indonesia is an equatorial country located at latitudes less than 20 degrees covered by 77 % ocean, thousand islands, strain and many difference of topography, SWOTEC is very compatible build in Indonesian. This paper discussed on performance of 2MW closed cycle of SWOTEC in Siberut Island, Sumatera Barat-Indonesia. Siberut Island has a hot and humid tropical rainforest climate, with an annual rainfall of 4,000 mm with temperatures range 22 - 31 0C and humidity averages 81-85%. The study founded that the Siberut island has potential SWOTEC due to the gradient temperature more than 20 0C. The electricity and fresh water generated by the SWOTEC are more promising to be applied in the island.
Ocean and Aerospace Engineering Research Institute, Indonesia
Department of Aeronautical, Automotive and Ocean Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor, Malaysia
Podded propulsion system has been utilized to make revolutionary in the integrated ship propulsion and steering system due to diesel-electric and combining pod and rudder in the compact body. This paper would review utilization of podded propulsion system on the Double Acting Tanker (DAT) ship in ice mode. The DAT ship can be operated running ahead mode and astern mode in open water and ice conditions.
Department of Aeronautical, Automotive and Ocean Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor, Malaysia
Ocean and Aerospace Engineering Research Institute, Indonesia
Department of Thermo-Fluids, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor, Malaysia