A disc brake is one of important auto parts for motorbike cycle industry which effected directly to life safety. As the result this project aims to test the performance of the disc brake in order to study the physical disc brake that effects to braking distance and to be an alternative for testing the brake disc. The braking performance tester was designed and created in the single dynamometer which was not over 10 Hp and the 17of inertia .70 kg. m. Referring to testing state of JASO T204:2001 standard this tester focused on testing the 3 different types of disc brake i.e. normal type grooving type and perforated type. The tested temperature was at normal state of the brake disc temperature (60° C - 80° C) and at high state (more than 100° C). The braking force from 9.81 N to 34.33 N at master cylinder was tested. moments was not over 92 The result revealed that at normal temperature the braking performance of the three disc brakes (normal type grooving type and perforated type) was at 17.76 21.80 and 19.00 per 1 mrespectively. However the brake performance at high temperature was at 14.41 18.06 and 18.93 per 1 m. This meant that the most efficient disc brake at normal temperature was grooving type of disc brake which was 22.74% different from normal type of disc brake. Nevertheless; the perforated type of disc brake was the most performance disc brake at high temperature which was different from normal type of disc brake at 25.32% 2 of contact surface areas 2 of contact surface areas respectively2m/s2m/s

The purpose of this research is to facilitate technology of limiting excess electricity from the source before supplying to the electrical appliances. The distribution of electricity by Metropolitan Electricity Authority (MEA) frequently exceeds the needs of households and factories due to the fact that the voltage has to be enough to send electricity to users who are located further at the end of the voltage grid lines. Most electrical appliances are designed to perform at optimum voltage of 220 Volt. The voltage optimization system controls the incoming voltage to fit the optimum voltage of electrical appliances which will reduce the overheating phenomenon and thus lengthen the lives of electrical appliances. It can save 8-14% of total energy being consumed and potentially reduce CO2 emission. This analysis system can be used for industries in the range of small to large companies. From the development of remote monitoring using a control via internet or 3G/4LTE the voltage optimization system showed practical power saving results of the reduced power usage and lengthen the lives of electrical appliances; that leads to reduction of emerging electricity resource eradication of natural resources increase the chance of marketing competition and energy sustainable

The purpose of this project is to reuse the wasted cloth into a street wear style cloth. We will use a 100 people as our target group. The materials for the project are : 4 types of reused street wear cloths and a survey. From the study we have sum up to a conclusion. We have prepared 4 street wear cloths targeting ladies age from 21-23 and 25. These participants needs to have at least a under grads Degree with an incomes of 15000 bath or lower per month. The question in our survey consist of : That these reuse street wear cloth can reduce the amount of wasted cloth and it can also be brought Into a main line of cloth wearing. It can also be also be worn on a daily bases. It is also quite pretty and Attractive. It is useful and it can help to give more value to those wasted cloths. This type of clothing is suited for ladies from 21-25 years of age. And it can also benefit them. Does it have a modernized way of Decorations? And will it benefit to those who live around us. and the results are all came in as a High rating from 4.4 4.42 4.35 4.34 4.33 4.29 4.28 4.27 and so on. The detailed conclusion to the street wear cloths are : the design sample 1 sample 2 sample4 Sample3 are scored accordingly 4.34 4.25 4 3.54 in orderly fashion. The cutting sample 1 sample 2 sample 4 sample 3 came as a high rating scoring from 4.28 4.25 4.19 3.7 accordingly. The decorations sample 1 sample 2 and sample 4 came in as high rating scoring from 4.31 4.24 3.99 Aecordingly. The sample 3 came in as medium score of 3.46. the patching sample 1 sample 2 sample 4 sample 3 came as a high score rating 4.38 4.36 4.04 3.76 accordingly the coloring sample 1 sample 2 sample 4 came in as high score from 4.4 4.33 4.05. but sample 3 have only received a Medium score 3.5. for over all scoring sample 1 sample 2 sample 4 sample 3 all got high scores of 4.34 4.29 4.05 3.59 accordingly.

The objective of this research was presented a decision support making process for efficiency improvement of drinking water processing using retrofit technique for machine and equipment rehabilitate. This methodology was applied Analytic Hierarchy Process (AHP) for selecting an appropriate maintenance sub-contractor. To complete the research existing water purifying machine and tools were inspected to assess its capacity. Future capacity of the purifying machine was also identified. Consequently machine and tools such as water tank and water filter were inspected for retrofitting for the example water tank water filter water quality control and bottle packing. Finally the analytic hierarchy process was utilized to select the most appropriate maintenance sub-contractor. In this process both qualitative and quantitative processes were analysed. The result of this research has been found that this multicriteria decision making process could be used to support the decision making investment process of water purification retrofit unit at Faculty of Engineering Rajamangala University of Technology Phra Nakorn efficiently. Furthermore it could be reduced bias from decision makers while the decision was accepted by all stakeholders.