This study Motorcycle Tourism Potential of Kanchanaburi Province aims to study the motorbike tourism potential of Kanchanaburi. And suggestions for motorbike tourism development in Kanchanaburi Province. The research employed a quantitative research. The research sample was 400 tourists who travel by motorbike in Kanchanaburi tourist attractions. The research tools was a questionnaire with open-ended questions. The data is described by frequency percentage and standard deviation. Most participants were male 30-39 years old had obtained a bachelor degree managed private businesses and earned income of naked motorcycle. The results of the research indicate that opinions about motorcycle tourism potential in Kanchanaburi Province ranked from the highest to the lowest potential is travel cost Presentation and information view and the biker challenge of the route Security facilities of motorcycle tourism policy tourist attractions people motorcycle group and motorcycle club and marketing. Suggestions on motorcycle Tourism development in Kanchanaburi. There are 8 points: price control public relations adding motorcycle rest area ensure safe travels adding motorcycle tourism services establish regulations related to Motorcycle tourism conservation of tourist attractions and Promote activities in Motorcycle group.

The aim of this research is to design a prototype of a male dummy chest for motorcycle crash tests. The primary criteria discussed in this study are based on the unique features of Thai ergonomic body sizes with an age range of the highest fatal rate and the fundamental design of the Hybrid III 50th percentile male crash test dummy. A comprehensive experimental study of crash behavior of the prototype undergoing axial compressive loading is performed using the mutual procedure of cadaveric chest testing. For design criteria the largest chest deflection of 80 mm the maximum acceleration of 38.47g and the absorbed energy of 178.369 Joules are considered in the experiment. The obtained results show a good agreement with the experimental data of other researches in which the capability of the energy absorption depends on impact velocities. In addition the energy absorption capability of this prototype can accurately assess an injury level under AIS 3+. For this reason the first prototype of a male chest dummy is particularly suitable for an assessment of a lower serious injury level in a motorcycle crash test.

The performance investigations of subcritical ORC supercritical ORC and trilateral Rankine cycle (TLC) power plants with the heat source temperatures of 210-250°C were conducted and compared in this study. Several working fluids were evaluated. A MATLAB code was developed and used in this study. The thermodynamic properties of the working fluids were calculated by using NIST REFPROP program. The justification of the code was validated with a result taken from the literature. The optimal operating conditions were searched using the golden-section technique. The maximum net output power of 141.72 kW was obtained when using the supercritical ORC plant with R141b as its working fluid and the heat source temperature was at 250°C. The corresponding cycle efficiency was 16.25%. When using the subcritical plant at the same heat source temperature the maximum net output power of 133.40 kW and cycle efficiency of 15.70% are obtained when pentane is used as the working fluid. Furthermore the net output power of 133.82 kW and cycle efficiency of 14.90% are obtained when using R141b as the working fluid in the TLC power plant. According to the off-design simulations an appropriate adjustment of the working fluid flow rate can mitigate the variation of the net output power.

This paper present the engineering properties of asphalt (AC 60/70) modified with different ratios of crumb rubber. Then select the best properties of the binder to mix asphaltic concrete. From laboratory testing results with adding 11% crumb rubber into mixtures for the best results. The properties of asphaltic concrete can be improved by adding 11% crumb rubber. For asphaltic concrete Marshall Stability increased and flow decreased with adding crumb rubber into asphalt. Comparing to ordinary asphaltic concrete (AC 60/70) the rutting resistance was increased 18% for crumb rubber modified asphalt respectively. Moreover the fatigue resistance of crumb rubber modified asphalt improved to be 1.59 times compared to AC 60/70.

Sidecars are one kind of vehicles which Thai peoples widely use and also be useful in daily life such as a commercial carrying and transport carrying. the purpose of this project is to increase more safety of carrying and utilization by reserching and developing the stability of sidecars. This approach is to use the 3rd phases set of width adjustable (confirm with legality) is composed first series of small phases second series of midium phases and third series of large phases in order to find each phases of the differences in the stability of sidecars. At the same time this experimentation occured the Pitch angle the Yaw Angel the Resistance in riding and brake and finally the speed of sidecar. Many conclusions are to get the most suitable stability of sidecars. Based on this methodology will be the most suitable stability of sidecars which can develop and design sidecars get more efficiency and capability of carrying later. The result of the stability sidecars testing in case of no carrying was found that increase of wheeltrack directly effects the Yaw Angel increased and conversely Sideslip angle reduced. In case of carrying with passengers was found that the increase of mass directly effected on the increasingly resistance of left hand and right hand. In case of commercial carrying that was similar to the testing carrying with five passengers due to the weight distribution got near to front wheels similarly was found that the increase of wheels base directly effected on the Sideslip angle increased and conversely the Pitch angle reduced. In case of commercial carrying which reduced the speed while cornering directly effected on the Sideslip angle reduced. For the bend testing by braking with the rear brakes and 1.1 m wheel track caused the Pitch angle the Yaw Angle and the Sideslip angle was less was found that was the most suitable stability of sidecars. And conversely for the bend testing by braking with the front brakes or braking with the front and rear brakes jointly caused the Pitch angle the Yaw Angle and the Sideslip angle was more was found that is not insecurity to keep the suitable stability of sidecars.