Harsimran Singh Sodhi

The electric discharge machine is an electro-thermal machining process, in which electric energy is used to generate the spark between the workpiece and electrode. The material is removed due to thermal energy which is caused by the electric spark. Electric discharge machine is used for machining of high strength temperature resistant alloys and the material which are difficult to machine in other machining processes. In EDM, since there is no direct contact between the workpiece and the electrode, hence there are no mechanical forces existing between them. Any type of conductive material can be machined using EDM irrespective of the hardness or toughness of the material. In the present work, the optimization of four EDM process parameters like discharge current, pulse-on -time, voltage and duty cycle for high-speed steel(AISI-M2) is done by performing experiments using response surface method(RSM) in order to maximize the material removal rate and at the same time minimize the tool wear and minimize the surface roughness. After the optimization results are appraised through the ANOVA test.

This book deals with a non-traditional machining technique known as electric discharge machining. It is an advanced technique which is quite often used in nowadays. This book includes detailed information regarding electric discharge machining along with is a case study that has been performed in which various parameters related to electric discharge machining have been optimized using design of experiments method.

The book interprets and simplifies the current thinking of the world's leading safety management experts. The book is meant for safety professionals, line managers, trainers, HR professionals and heads of industrial establishments. From identification of common potential hazards, associated with entry into a confined space, falls and slips, electrocution, uncontrolled release of hazardous energies, material handling, disposal of waste materials, working with tractors, forklifts, gas cylinders and corrosive substances- the book is a repository of experiences, hazards and lapses. It includes materials that can be used for training and development of workers and professionals. Most exclusively, it contains in-depth case histories, often true, unfortunate incidents on thoroughly investigated and properly analysed Surveillance Findings and Investigative Case Reports.

An attempt has been made through this book to present both the theoretical and practical knowledge of these subjects. Considering the general needs of engineering students in the country and the fact that they hardly get any exposure to manufacturing setups, a basic course in casting, welding and forming remains a core subject for Mechanical and Automobile Engineering. This book covers most of the syllabus of manufacturing processes/technology, workshop technology and workshop practices for engineering diploma and degree classes prescribed by different universities and state technical boards.