Optimizing Parameters of Ultrasonic Machining Using TOPSIS Method

Ultrasonic machining (USM) is an advanced machining process used for machining brittle and hard materials that can’t be machined using conventional methods. The most important advantage of USM is cutting precise holes of any shape in engineering ceramics, quartz glass, diamond, etc. USM is also used for machining the materials used in aerospace, defense, electronics, automotive, bio-engineering, etc. Here Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) is used for getting the best alternative depending on their relative shortest distance to the ideal solution. Quartz glass with size (5 × 45 × 45) mm has been used for the current work. The parameter setting with ultrasonic power of 55%, tool feet rate of 0.75 mm/min, and tool rotational speed of 5000 rpm were found as closest to the ideal solution. The grooves on the machine surface were formed by continuous strikes of abrasive material (diamond with a sharp cutting edge).