จำนวน Repository ( 3447 )

การพัฒนาแบบจำลองไฟไนต์เอลิเมนต์สาหรับการกำเนิดคลื่นแมกนีโตอะคูสติกเพื่อการสร้างภาพตัดขวางแบบไม่ทำลาย
การพัฒนาแบบจำลองไฟไนต์เอลิเมนต์สาหรับการกำเนิดคลื่นแมกนีโตอะคูสติกเพื่อการสร้างภาพตัดขวางแบบไม่ทำลาย

This research report describes the study of the development of finite element modeling for magnetoacoustic wave generation for non-destructive tomography. In the study the two-dimensional finite element model is used for the generation of magnetoacoustic wave in the mimic biological tissue model. The Gaussian pulse is applied as the excitation pulse in this research. The result of signal capturing at the boundary of mimic tissue model is used for the reconstruction cross-section image which is agreed to the original conductivity distribution.

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กระบวนการสนับสนุนการตัดสินใจในการพัฒนากระบวนการผลิตเพื่อเพิ่มศักยภาพในการแข่งขันตามแนวคิดอุตสาหกรรม 4.0
กระบวนการสนับสนุนการตัดสินใจในการพัฒนากระบวนการผลิตเพื่อเพิ่มศักยภาพในการแข่งขันตามแนวคิดอุตสาหกรรม 4.0

This research aims to study the important factors that affect the decision making in the manufacturing process development of industrial factories according to the Industry 4.0 concept and to create decision models. The model developed from applying Analytic Hierarchy Process (AHP) to this group of experts focuses on the most strategy and organization factors accounted for 28.3 percent followed by the smart factory accounted for 17.8 percent smart products accounted for 16.3 percent smart operations accounted for 13.1 percent employees accounted for 12.5 percent and the data-driven services accounted for 11.9 percent by the model test results with 3 factories. In conclusion this model can decide the way to improve the production process of industrial plants according to the Industry 4.0 concept that is suitable for the context and limitations of each industrial plant can be used for all types of industrial plants and will directly benefit the decision makers of industrial plants to improve the production process and develop into smart factory based on the Industry 4.0 concept.

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การออกแบบและพัฒนาเครื่องแต่งกายโดยประยุกต์ใช้การตกแต่งสำเร็จแห้งไว สำหรับเสื้อผ้าสตรีมุสลิม
การออกแบบและพัฒนาเครื่องแต่งกายโดยประยุกต์ใช้การตกแต่งสำเร็จแห้งไว สำหรับเสื้อผ้าสตรีมุสลิม

This research on the “The design and development of Quick-Dry finishing applied to Muslimah clothes” had the objective to create knowledge in the development of Muslim women’s clothing with the emphasis on religious benefits. Likewise this research aimed to solve the problems of dampness after ablution which is the daily routine of Muslim people in order to provide clothing that are suitable for wearing while retaining the aesthetic elements according to the doctrine of Islamic religion. The prototype of Muslim women’s clothing with a quick dry finish had been prepared for religious benefits. Moreover the guideline for the production of a new form of clothing had been developed to enter the AEC market in order to correspond to the government’s policy on economic development. The research process consisted of 9 steps as follows: 1) review related theories and literature; 2) conduct questionnaire to collect preliminary data and draw conclusions; 3) design 15 Muslim women’s dresses to reduce the dampness after ablution; 4) select 4 dresses to be used as prototypes; 5) conduct experiments on the sample group while they were performing ablution; 6) collect data from the satisfaction survey; 7) evaluate the obtained data; 8) analyze the obtained data; and 9) conclude and discuss the research findings. After selecting the prototypes that are appropriate to this research it is evident that all selected prototypes were black in color with a similar design to Abaya dress due to its classic look. The majority of the sample stated that they adhered to the culture of the Middle East which is the origin of Islamic religion. All of the prototypes used Ponte de Roma knit but were composed of four different types of fabric: C40 TK45 Micro27/72 and CVC40. The prototypes were tested according to Fabric Test standards. All types of fabric were compared in terms of their finishing properties: no finishing and quick dry finish. The results indicated that the color resistance to washing had decreased for C40 TK45 and Micro75/72 fabrics while improved for CVC40 fabric. Meanwhile the color resistance to sunlight had decreased for C40 fabric while improved for TK45 and Micro75/72 fabrics and remained unchanged for CVC40 fabric. Moreover the color resistance to sweat and water had decreased for C40 TK45 and Micro75/72 fabrics while improved for CVC40 fabric. In addition fabrics with the composition of synthetic fibers had a better moisture management than fabrics with the composition of natural fibers. Meanwhile the drying rates of C40 TK45 and Micro75/72 fabrics increased by 26-28% when compared to fabrics of the same types but without a quick dry finish as opposed to CVC40 fabric that reduced by 11%. The most prototype popular was number 4 which was suitable for all factors.

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การควบคุมคุณภาพการย้อมสีและตกแต่งสำเร็จเส้นด้ายผักตบชวาและวัสดุประกอบเพื่อการแปรรูปผลิตภัณฑ์เชิงพาณิชย์
การควบคุมคุณภาพการย้อมสีและตกแต่งสำเร็จเส้นด้ายผักตบชวาและวัสดุประกอบเพื่อการแปรรูปผลิตภัณฑ์เชิงพาณิชย์

Quality control of dyeing and finishing of Water Hyacinth yarns and their transformed materials for commercial was a main objective to establish the dye database of synthetic dye and natural dye. The dye database was a data for quality control in dyeing process of raw material as Water Hyacinth yarns also it resolved the un-repeatability dyeing problem. Reactive dye was used for synthetic dye database creation on dry Water Hyacinth yarns at 80oC for 30 minutes. Red as Hicion Red He-3B yellow as Hicion Yellow HE-4RN Blue as Hicion Navy Blue HER 150% and black as Hifix Black KNN were the represent synthetic dye and Sodim sulphate 20 g/l and sodium carbo nate 20 g/l were used as auxiliaries. The other hands the natural dye database was forming from Ebony tree Caesalpinia sappan and Turmeric. They were dye on dry Water Hyacinth yarns at 80oC for 30 minutes and Sodim sulphate 20 g/l was the auxiliary. Whereas Butterfly pea were dye at 80oC for 30 minutes by Sodim sulphate 20 g/l and sodium carbonate 20 g/l were the auxiliaries. The whole dye database was defined the totally in Primary Secondary and ternary dye cycle. The transfer knowledge was distributed to the enterprise at Nakhon Prathom Provincd as “Chumchonjaksanpaktobchawha Bann klongnokkratum”. The topics were “How to establish the synthetic and natural dye database” “Water repel lent finishing” and “developed and transformed the Water Hyacinth to products”. The target group was very satisfied in this topic as 4.39. In the result the proportion between economic and social factor by the income increasing in 1 year was 5.04. So the research project was achievement.

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การลดเสียงรบกวนการเบรกจากผ้าเบรกด้วยเทคนิคการเสริมชั้นความหน่วง
การลดเสียงรบกวนการเบรกจากผ้าเบรกด้วยเทคนิคการเสริมชั้นความหน่วง

Nowadays brake pad is a one of products that plays a role in the automotive parts industry and directly affects safety. Therefore there are many designs of brake pad for product development. The technique of reinforcing the layer in brake pads is another option for developing such products. The objectives of this research are to solve the problem of noise from brake pads using the material layer reinforcement technique and raise the quality of brake pads to use in the industrial sector. As a result the prototype brake pads with reinforcement techniques by means of damping layer were performed. Consequently the experimental work reveals that the brake pads with damping layer technique for brake pads can reduce vibration and also brake noise at the same frequency at less 10 percent at braking speeds of 50 100 and 130 km/h. Besides this technique can be applied to the production of brake pads in the same formula. However the prototype brake pads is still in the product development phase for testing in a variety of conditions both temperature factors and usage period

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