Although continuous progress in technical advancement, the conventional machining process has became unsatisfactory healthcare due to its disadvantages. This inadequacy led researches consider using application of nontraditional that can machine extremely hard and brittle materials into complicated shapes healthcare. Researches have proved diverse NTM applications Water Jet Machining (WJM), Ult...

This study presents a designing process for refurbishing of a 32 MW rotor-generator damaged coupling. The reason of rotor damage was being hit by the quivers of an explosion. The original coupling was union with the rotor formed after a machining process on a mono block forged rotor. In some areas imposed damages caused the breaking off and detachment of some parts in the coupling flange. Becau...

Hardened steels are commonly used in wide areas of technologies and industries. In respect of poor machinability of these steels and requirement of expensive cutting tools, study of machining economy is a matter of importance. Thus the present study deals with the economic considerations of various hole making processes. For this purpose, the hard steel samples were machined by conventional dri...

Most of the materials used in the industry of aero-engine components generally consist of titanium alloys. Advanced materials, because of their excellent combination of high specific strength, light weight and general corrosion resistance. In fact, chemical wear resistance of aero-engine alloy provides a serious challenge for cutting tool material during the machining process. The reduction in ...

An autonomous machine tool has been developed to solve fundamental issues with the current command method using NC programs, and some key technologies for its realization have been devised. In the process planning system, various process plans are prepared, and the appropriate process plan can be selected to achieve flexible machining operations. Digital Copy Milling, digitizing the principle o...

In the present work, the optimization of the abrasive water jet machining (AWJM) process parameters with multiple performance characteristics based on the orthogonal array with the grey relational analysis (GRA) has been studied. Optimization of multiple response characteristics is far more complex compared to optimization of single performance characteristic. A grey relational grade (GRG) calc...

This paper reviews applications of acoustic emission sensing techniques in machining. Originally applied to non-destructive testing of structures but now Acoustic Emission Signals are proving to be an effective tool for monitoring of the machining process due to its sensitivity to process parameters. The source of AE is attributed to the release of stored elastic energy that manifests itself in...

Abrasive water jet machine (AWJM) is a mechanical base non-conventional machining process. This is process of removal of materials by impact erosion of high pressure (1500-4000 bar), high velocity of water and entrained high velocity of grit abrasives on a work piece. Experimental investigations were conducted to assess the influence of abrasive water jet machining (AWJM) process parameters on ...