The railway brake system usually uses compressed air brake system which uses high-pressure air to press the brake shoe on the surface of the wheel to reduce the speed of the train. Repeated friction generates heat at the contact surface, increasing thermal stress on the cast iron brake shoe. The purpose of this study is to investigate the thermal stress on a prototype of cast iron brake shoe using the finite element method compare the analytical results to the actual brake shoe and redesign a brake shoe prototype to reduce thermal stress. Based on the results of the thermal stress study using the finite element method, it has shown that the location of the thermal stress on the prototype brake shoe according to the location of the crack on the real brake shoe. The brake shoe's design which includes single notch in the center of brake shoe which is can help to reduce thermal stress. The results from this study should be validated with the results from the field test to evaluate both of thermal distribution and braking efficiency in term of braking distances as well.
ระบบเบรกของรถไฟนิยมใช้ระบบเบรกแบบลมอัด โดยใช้อากาศแรงดันสูงกดแท่งห้ามล้อไปสัมผัสกับผิวของล้อเพื่อลดความเร็วของรถไฟ เมื่อเกิดการเสียดสีกันซ้ำ ๆ จึงเกิดความร้อนขึ้นบริเวณผิวสัมผัส ทำให้เกิดความเค้นสะสมเนื่องจากความร้อนบนแท่งห้ามล้อวัสดุเหล็กหล่อ งานวิจัยนี้จึงมีวัตถุประสงค์เพื่อศึกษาความเค้นเนื่องจากความร้อน (Thermal stress) บนแท่งห้ามล้อวัสดุเหล็กหล่อรูปแบบต้นแบบด้วยระเบียบวิธีไฟไนต์เอลิเมนต์เพื่อเปรียบเทียบผลการวิเคราะห์ที่ได้กับแท่งห้ามล้อชิ้นงานจริง และออกแบบแท่งห้ามล้อวัสดุเหล็กหล่อในรูปแบบใหม่เพื่อลดความเค้นเนื่องจากความร้อนที่เกิดขึ้น
วิทยาลัยการจัดการนวัตกรรมและอุตสาหกรรม
This research aims to study the waste management process of horse manure, the production process of organic fertilizer from horse waste, and opinions on the use of innovative organic fertilizer from horse manure. A mixed-method approach, combining qualitative and quantitative research, is employed. The organic fertilizer is produced from horse manure, which is a waste that incurs disposal costs. Through the fermentation process, it is transformed into an environmentally friendly fertilizer containing essential nutrients beneficial to plants. According to the laboratory analysis of the organic fertilizer conducted by the Soil Science Laboratory, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, it was found that organic fertilizer from horse manure contains essential nutrients for plant growth, including macronutrients, secondary nutrients, and micronutrients. This reflects the potential of horse waste management, the production process of organic fertilizer from horse manure, the efficiency of the organic fertilizer, and strategies for adding value to expand its commercialization.
คณะอุตสาหกรรมอาหาร
In recent years, many people have shown greater interest in plant-based proteins because of their health benefits and lower impact on the environment. This study will look at the physical and chemical properties of chickpeas and red beans. It will also create a plant-based burger that tastes and feels similar to meat-based burgers while providing comparable nutrition. We will steam the ingredients and then analyze important properties such as texture, color, water activity (aW), pH, and how well they retain water and oil. Additionally, we will conduct a sensory evaluation to understand consumer preferences.
วิทยาลัยเทคโนโลยีและนวัตกรรมวัสดุ
The development of skin-on-a-chip models plays a crucial role in research for drug and cosmetic development. Traditional approaches often utilize two-dimensional (2D) methods that rely on culturing cells on flat surfaces, resulting in a lack of complexity in skin structure and realistic cell interactions. Moreover, traditional methods have limitations in mimicking fluid flow and nutrient circulation, which affects the accuracy of pharmaceutical testing and the prediction of drug effects. This has led to the advancement of three-dimensional (3D) skin models using new microfluidic technology, enhancing the realism of skin structure by replicating both the epidermis and dermis layers, as well as simulating fluid flow similar to physiological conditions in the human body. The design of 3D systems allows for more realistic cell arrangement and interactions, enabling better simulation of skin functions and increasing the accuracy in evaluating the effects of various substances on cell responses, including absorption, inflammation, and wound healing. Therefore, the development of three-dimensional (3D) skin models not only addresses the limitations of traditional methods but also represents a significant step forward in creating models that can be effectively applied in drug testing and pharmaceutical product development.