DEVELOPMENT OF COEFFICIENT OF FRICTION COMPOSITE BRAKES LOW FOR TRAIN BLOCK BRAKES

• Main Author: Ezelo, Ridho
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/51867
• Institution: Institut Teknologi Bandung

Use of railway brake blocks made from composite to replace the metal brake blocks are increasingly rapidly. The advantages of composite brake blocks given them a longer service life, lighter brake blocks, and the price is cheaper. However, composite brake blocks can not completely replace the role of metallic brake blocks. The coefficient of friction of composite brake blocks larger than a weakness metallic brake blocks that are not negotiable. Because of this, composite brake blocks are not suitable to be used to train with weights and a radical route. In this final project focused on the development of composite brake specimens to obtain composite brake friction coefficient is lower than previous studies. Development is done by modifying the content of materials that affect the value of the coefficient of friction brake composite specimens. Constituent materials are modified it is alumina, Ferrum, and graphite. Tests for coefficient of friction which made the seven specimens successfully produce composite specimens brake friction coefficient is low. The coefficient of friction of specimens ranged from 0.18 to 0.22. The value of this friction coefficient is lower when compared with previous studies whose value ranges from 0,23-0.32. Compressive strength and flexural strength of specimens also meet the technical specifications for railway composite brake blocks. Testing mechanical properties have been carried out using the standard governing the dimensions of specimens and testing methods. Standard used was ASTM D3702, ASTM D695 and ASTM D790.