จำนวน Repository ( 44 )
การพัฒนาสมรรถนะวิศวกรนักปฏิบัติทักษะสูงเพื่อรองรับอุตสาหกรรม 4.0 อย่างยั่งยืน
The objective of this research was to develop the engineering students in accordance with the Bachelor of Engineering (B.Eng.) curriculum (industrial engineering) through the work-integrated learning program under which the students worked in the production line from Monday to Friday and studied the theories on Saturday. The learning program continued throughout the semester under the collaboration with Thai Cutting Tools Manufacturers (TCTM) of which 26 companies participated in the program. The program determined the development plan for the students of IE.102 course: Basic Production Process for Engineers through the project-based learning (PBL) program in accordance with the CDIO standard (Standards No.1-4). Twenty-seven (27) students of the work-integrated learning (WiL) program worked in 7 companies which were manufacturers and developers of cutting tools machine tools high precision parts and machines. All participating companies were designer and developers of new products and innovations and their products were distributed in and outside the country. Hence the students learnt from working in the production line to create new products according to the production plan. The products newly created through the integrated production method consisted of machine tools automated machines lathe milling drilling fitting grinding welding and metal sheets. The students learnt to use the tools to assemble and create the machines and developed the technology operation skill for production of high precision products. The learning and working were combined and applied to create those products. The students’ skills were developed in compliance with the CDIO standard (Standards No. 5) as the program required them to work in the workspaces to create the products in compliance with the CDIO standard (Standards No.6). The students created the cutting tools in compliance with the CDIO standard (Standard No.7) such as drills center drills end mills reamers insert tools and cutter tools. The students also created shafts gears bushes bolts and wedge assembled the parts in the power transmission of the machines the electric and electronic circuits of the machines and the electric motors and created the machines and molds for production. The teaching arrangement learning assessment and examination of the students’ competency were assessed from the integrated learning skills. Each student undertook the practices to develop the personal and interpersonal skills. The program development was based on self-learning under the supervision monitoring and recommendation of the lecturers specialized in the product design product creation and production management to develop the students in compliance with the CDIO standard (Standard No.7).The students practiced different skills such as conceiving designing implementing and operating respectively. In addition the students reported the progress under the project-based learning program and assessed the learning results before and after the learning session. Based on the study development under the “work college” project it was found that the students could develop the basic engineering skills throughout the semester. The basic engineering skills comprised the followings; 1) Integrated skill on the machine and tool operation in the basic engineering production process 2) Drawing and production drawing analysis skills 3) Material feature analysis skill for production 4) Machine-operating skill for production 5) Measuring tool-operation skill for product quality inspection 6) Machine tool and equipment operation skill for production of finish products 7) Part and component replacement skill for machine maintenance 8) Problem-solving skill in part and component production in case of incompliance with production drawing 9) Analysis skill of production process and conditions for operation at the workplace 10) Interpersonal skill obtained through the duty performance correction of defect parts in accordance with the advices of supervisors problem-solving with colleagues and project development. The 27 students gained the experiences through the work performance in the workplace according to the learning by doing approach. They performed duties developed the project solved problems and obtained the technology operation skill for production in accordance with the assigned tasks. They were trained to systematically solve the work problems. All of them produced cutting tools high precision tools and other tools from drawings and innovative development. They were equipped with basic engineering skills in compliance with the course curriculum standard and CDIO (Standards No. 8). The research findings affirmed that the students’ competency was increased with statistical significance of 0.5. Each of them developed a project under the project-based learning program. The developed projects were highly important. The students’ competency was developed through work performance covering product creation problem-solving. They learnt about the created products and their lifecycle in accordance with the science and engineering study approach. They were trained to identify the problems analyze the causes design the solutions implement the drawing designs and create the new products from the experimental results. The students were developed under the work-integrated learning program in accordance with the CDIO standard. The engineering skills were equipped through the creation of high precision tools and hard metal tools. Through the integrated learning the students obtained the basic engineering knowledge on the mathematic and physic calculations creation of the engineering drawings material analysis for engineering production project management and technology and innovation creation. The students communicated in English during working at the workplace. They understood the material features designed products for production and used these products to further create other products. They understood the connection of the supply chain in the industry with regard to production of 4 product categories which helped the students on creativity knowledge integration for engineering product creation product integration for further production and utilization of the industrial supply chain. The research contributed to the engineer development with regard to science research and innovation for the sustainable development.
Application of kansei engineering and dematel to priori tize service quality for public hospital in Thailand
The health care industry is one of the rapid growth industries in Thailand. Thai government has promoted and set a strategic policy to by “Medical Hub of Asia”since 2004. Therefore the chief executive officers of many hospitals have determined strategies to improve their service quality because of the global competition. Service competition. Service quality which refers to customer perceptions of the service process has been considered. Sansei Engineering can be the best tool for translating customer perceptions and emotions to the psychical desire attributes. This study conducted sansei engineering and service quality to analyze the relationships between service quality and customer’s emotion and feeling. The decision making trial and evaluation laboratory (DEMATEL) was employed to constructs the cause-effect relationship of criteria of the model that can be described complexity of causal relationships. The results show that tangible and empathy are the key factors that should be considered as the first priority for improving by public hospitals directors. Sponso Rajamangala University of Technology Phra Nakhon
การตรวจจับกระแสฮาร์มอนิกสําหรับตัวกรองฮาร์มอนิกแบบแอคทีพชนิดปรับ ค่าได้เอง โดยใช้ขั้นตอนวิธีแบบ RLS
This thesis proposes a method for detecting harmonics current in the adaptive active harmonic filter with Recursive Least Square (RLS) algorithm. The proposed method is based on the theory of noise cancellation adaptive filter. Originally the theory was used for audio signal processing but this thesis is applied to the harmonic current detector of an active harmonic filter. The principle and construction of the harmonic current detector in the adaptive active harmonic current filter with Least Mean Square (LMS) algorithm and Recursive Least Square (RLS) algorithm are presented to compare the efficiency of both algorithms. Then simulate these two algorithms with Matlab-Simulink program to simulate the three case studies. All three case studies that simulate are generally available in industrial plants. The simulation results show that the harmonic current detector in the adaptive active harmonic current filter with the LMS algorithm and the RLS algorithm can detect the harmonic currents in the power systems. However the RLS algorithm is more efficient and has less error value than the LMS algorithm. Therefore it is confirmed that the RLS algorithm proposed in this thesis is appropriate to use with the adaptive active harmonic current filter to really work in the industry.
แผ่นเกราะเซรามิกส์กันกระสุนด้วยวัสดุเชิงประกอบ
This research has been studied and created the ceramic armor plates with composite materials that been proceeded from drying compression process with mold. Al2O3 that use for compression forming has been analyzed by SEM and XRD. It showed that compound and powder particle led to 5 microns-sized. It had flat circle shape of colundum Al2O3 and hexagonal crystal system. Upper punch of molding has designed and analyzed by FEA to 2 forms first form was the end-point had flat face and second form was the end-point had a convex. Upper punch had been made from AISI 52100 with 64 HRC ceramic armor plate had been produced by compression at 1000 kN which had hexagon side shape of width 25.98 mm for each side or height between parallel side of 45 mm. Al2O3 had been compressed to investigate the distribution of relative density for the height after compression of 15 and 30 mm by analyzing 4 cases that consist of 1.) a case of smooth face of upper punch which has green compact of 15 mm height 2.) a case of convex face of upper punch which has green compact of 15 mm height 3.) a case of smooth end face of upper punch which has green compact of 30 mm height 4.) a case of convex face of upper punch which has green compact of 30 mm height. The result of this study is to propose the distribution of relative density on horizontal axis as it is a relative radius and vertical axis is a relative distance from the upper punch that is an axis of moving down action. This study found that the distribution of relative density form had analogous form for these 4 cases the density had few differences and had high value at the town edge of green compact due friction between die wall and upper punch. The ceramic armor plate has been set up on UHMWPE fiber plate and used special silicone to connect them together then will get the NIJ 3 standard of ceramic armor plate with Composite materials
แบบจำลองการควบคุมแรงดันเกินในระบบสายส่งกำลังไฟฟ้ำ
This thesis offers the design of the impulse generator 1.2 / 50 μs which applies for studying and generating the lightning impulse to test the endurance of the electricity transmission line. Moreover this study analyses the factors which affects the impulse waveform by using Orcad program. The parts of prototype device can find in the general market. After the efficiency test of the electricity transmission line the result shown that the device should have the high capability to endure the temporarily high impulse. This minimizes the dangerous from the electricity system.