Design and Development of Fatigue Machine: Rotating Bending Fatigue Testing

日期 : Feb 2018 - Feb 2019

<div><p>Fatigue fracture is the most common type of failure as more than 75-90% of documented materials’ failure in engineering components due to cyclic loading. So, it is preeminent to test the materials before use. This research work has been done in order to design and fabricate “Rotating Bending Fatigue Testing Machine” which is simple to understand, perform, portable, safe for use and more economical than others. A rotating bending fatigue testing machine was developed by keeping inmind the basic concepts of technical theory of bending of elastic beams. Different specimens of 6mm to 8mm diameter of different materials were tested under various loads to analyse the performance of this machine. The experimental readings and theoretical calculations indicate that the results were promising to agreement of the objective had been achieved. It was detected that the machine has the abilities of generating reliable bending stress – number of cycles data; and the cost of design (31,500 PKR) was lower in evaluation to that of rotating bending machines from abroad.</p></div>