จำนวน Repository ( 1087 )

การศึกษาพารามิเตอร์ในการขึ้นรูปแผ่นเกราะเซรามิกส์รูปร่างหกเหลี่ยมกันกระสุน
การศึกษาพารามิเตอร์ในการขึ้นรูปแผ่นเกราะเซรามิกส์รูปร่างหกเหลี่ยมกันกระสุน

This research had two objectives that were to study parameters for forming bulletproof ceramic armor plates and to create a model of a bulletproof ceramic armor plate for small armored regular trucks. The parameters used to form a ceramic armor plate contain the thickness of the armor plate and the compressive strength which affects the density distribution of the green compact. A ballistic ceramic armor plate with a hexagonal shaped material was created as a concave bulletproof plate. Extrusion results displayed that the hexagonal material was formed at a very high density on the side surface of the armor plate but with uneven capacity distributed across the overall plate due to the friction occurring on the wall of the mold. The finite element method particularly at the Ansys/Explicit Dynamic tools were applied to analyse the damage of bulletproof plates. The model of a concave-shaped bulletproof plate was set for the SKD11material influencing the changes in the direction of the bullet firing when the bullet hit the bulletproof plate at a velocity of 880 m/s in accordance with the NIJ 4 standard. The bullet was made of tungsten carbide and the ceramic armor plate was built with a size of 300×300 mm and thicknesses of 14 16 18 and 20 mm. The bullet was fired into the center part and onto the curved surface of the ceramic plate. The result shows that the armor plate could not resistant to penetration. In this situation the direction of the bullets movement against the armor plate especially at a curved surface as a slope could result the deflection of the bullet direction as well as reduction of penetration capability.

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หลักฆราวาสธรรม 4 ในพระบรมราโชวาทพระบาทสมเด็จพระบรมชนกาธิเบศรมหาภูมิพลอดุลยเดชมหาราช บรมนาถบพิตร
หลักฆราวาสธรรม 4 ในพระบรมราโชวาทพระบาทสมเด็จพระบรมชนกาธิเบศรมหาภูมิพลอดุลยเดชมหาราช บรมนาถบพิตร

This research article aimed to investigate the Gharavasa-dhamma IV which appeared in the royal guidance of His Majesty King Bhumibol Adulyadej the Great. The sample was The Royal Guidance of His Majesty King Bhumibol Adulyadej the Great about religion and morality book of the Department of Religious Affairs (Ministry of Culture 2009). Gharavasa-dhamma IV principle in Buddhism which was defined in Dictionary of Buddhism by Phra Bhramagunabhorn (P.A. Payutto) (2015) was the conceptual analysis framework. The study is based on the documentary research and presented through analytical description. The study found that the royal guidance of His Majesty King Bhumibol Adulyadej the Great can be classified into 3 groups: civil servant youth and Buddhist association with the young Buddhists association. according to the royal guidance literally conformed Gharavasa-dhamma IV was found a total of 21 words of Sacca [truth and honest] 22 words of Dama [taming and training oneself] 15 words of Khanti [tolerance ; forbearance] and 21 words of Caga [generosity]. However in some Royal Guidance there were more than one characteristic as well of Gharavasa-dhamma IV. The royal Guidance therefore has aimed on people to know how to be a good citizen in society for the benefit of People in nation and for their happiness.

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การออกแบบรูปแบบล้อรันแฟลทที่เหมาะสมสำหรับรถยนต์บรรทุกปกติขนาดเล็กติดเกราะด้วยระเบียบวิธีไฟไนต์เอลิเมนต์
การออกแบบรูปแบบล้อรันแฟลทที่เหมาะสมสำหรับรถยนต์บรรทุกปกติขนาดเล็กติดเกราะด้วยระเบียบวิธีไฟไนต์เอลิเมนต์

Run flat wheels for small armored regular trucks have been re-developed by transformation from the original metallic material to compound materials polymer group materials as important raw materials then added with aluminum oxide powder to achieve higher strength and wear resistance. The research was performed by using reverse engineering processes including designing and analysis with finite element methodology with the SolidWorks Simulation program and comparing the analyzed results with outcome experiments. Several variables used for the design and analysis were 1) the optimal width of the run flat wheel at the parts both attached to the wheel pan and contacted with the inner rubber surface 2) internal and external radiuses. The internal radius is depending on the size of the wheel pan and the external radius is a variable that determines the height of the Run flat wheel. 3) the shape designed to prevent wearing of the inner tire surface of the run flat wheel and the shape of the run flat reel in the part contacted with the wheel pan. This wheel pan part is such uneven inclined area which is difficult to hold. 4) a design locking kit for tightly fastening the run flat reels to the wheel pan 5) the material used to create the run flat wheel and 6) tire pressure. The run-flat wheels were then designed and constructed in a modular form of 3 parts for ease of the wheel pan assembly. In designing pattern the assembling run flat reels had to be fit into the characteristics of a small armored regular truck wheel pan convenient to assemble with a wheel pan and tightly attached without looseness or deformation when impacted. The run flat reel gripping device has been redesigned to lock all three run flat parts together. It brought up the impact resistance from body weight was at 50 km/hr.

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การผลิตก๊าซชีวภาพจากวัสดุเศษเหลือทางการเกษตร โดยระบบหมักไร้อากาศแบบแห้ง สำหรับครัวเรือนในชุมชนตำบลเกาะขันธ์ จังหวัดนครศรีธรรมราช
การผลิตก๊าซชีวภาพจากวัสดุเศษเหลือทางการเกษตร โดยระบบหมักไร้อากาศแบบแห้ง สำหรับครัวเรือนในชุมชนตำบลเกาะขันธ์ จังหวัดนครศรีธรรมราช

This research was studied and transferred the biogas production technology with the community participation using anaerobic dry fermentation system from agricultural residues. The production of renewable energy for replacing LPG in household cooking of Koh Khan Sub-district community Cha-Uat District Nakhon Si Thammarat Province was carried out. The efficiency of the biogas production from different co-digestion material with fresh cow manure was studied for 45 days. The experiment 1 bananas and papaya and the experiment 2 rice straw and coconut meal were used for fermented materials. It was found that the system using rice straw and coconut meal as a fermented material had a higher potential than using bananas and papaya. The system produced averaged biogas of 150 L/d and an average methane content of 67.68% respectively within just 15 days after start-up. While bananas and papaya as fermented materials took more time with more than 30 days after start-up the system. The system produced averaged biogas of 120 L/d and an average methane content of 64.64%. For usability test It was found that 150 L of biogas could continuously cook for 45-60 minutes. The 85% of the technology transfer recipients regarded that the knowledge gained as practical and reduced household expenditures. Additionally the system can produce biogas for a long time without adding new fermented materials. Therefore this biogas system could be applied to local agricultural waste for biogas production which can be expanded to other areas.

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การพัฒนาผลิตภัณฑ์ครีมแต่งหน้าเค้กไร้ไขมันทรานส์
การพัฒนาผลิตภัณฑ์ครีมแต่งหน้าเค้กไร้ไขมันทรานส์

The objective of this research was to study the development of cake decorated cream without trans fat. selection of buttercream using as a standards recipe from 3 formulas 50 tasters by 9 Point Hedonic Scales Test. The formula using buttercream had 8.37±0.71 points at very like level was composed of butter 36.08 % shortening 15.47 % white egg 5.15 % sugar 25.77 % salt 1.03 % water 15.47 % and vanilla 10 %. Then substitute shortening with white kidney bean at 0 25 50 75 100 %. The 100% white kidney bean recipe was the highest acceptable 8.42±0.75 points at the very like level. The acceptance test with 100 consumers was 8.10±0.74 score at very like. The color of products showed L* a* b* C and H were 37.52±0.04 0.30±0.01 11.19±0.04 11.20±0.04 88.42±0.07 respectively The Viscosity was 2857±26.62 cPs Moisture was 31.78±0.05 w.b. Texture (Firmness) was 55340.06±68.39 g Consistency was 47435.10±376.39 N. and Cohesiveness was 5.30±0.39 g.sec which more than the standard recipe and nutritive values per one serving. Carbohydrates decrease at 0.19 gram Energy increase at 32.43 kilocalories Fat decrease at 1.97 gram Sugar decrease at 30 gram and more protein than the standard recipe with 0.23 gram. per serving at 150 g.

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