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An Experimental Investigation of the Influence of Work Material Properties on Performance Indices of Ultrasonic Machining


Affiliations
1 Dept. of Mechanical Engg., AKGEC, Ghaziabad, India
2 Dept. of Mechanical Engg, UCOE, Punjabi University, Patiala, India
3 Dept. of Mechanical Engg., TIET, Patiala, India
     

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Ultrasonic Machining is one of the most widely used non-traditional machining processes for the machining of non-conductive, brittle materials such as engineering ceramics. Although USM can machine any material regardless of its electrical conductivity, the machining performance of this process is dependent on several important mechanical properties of the work material being machined, including fracture toughness and hardness. There is a considerable lack of research on this aspect of USM, particularly the performance of the process with different work-tool combinations and under varying process conditions such as slurry grit size, tool material, abrasive material etc. In the present investigation, an experimental study has been conducted to assess the effect of slurry grit size on Machining rate and tool wear rate with twelve different work-tool combinations. It has been concluded that the abrasive grit size plays an important role in the variation of the machining performance of USM. The machining rate is found to decrease with a corresponding increase in the product of fracture toughness and hardness of the work material. Tool wear rate decreases with decrease in the fracture toughness of work material and increase in the strain hardening capability of tool material.
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  • An Experimental Investigation of the Influence of Work Material Properties on Performance Indices of Ultrasonic Machining

Abstract Views: 222  |  PDF Views: 0

Authors

Jatinder Kumar
Dept. of Mechanical Engg., AKGEC, Ghaziabad, India
J. S. Khamba
Dept. of Mechanical Engg, UCOE, Punjabi University, Patiala, India
S. K. Mohapatra
Dept. of Mechanical Engg., TIET, Patiala, India

Abstract


Ultrasonic Machining is one of the most widely used non-traditional machining processes for the machining of non-conductive, brittle materials such as engineering ceramics. Although USM can machine any material regardless of its electrical conductivity, the machining performance of this process is dependent on several important mechanical properties of the work material being machined, including fracture toughness and hardness. There is a considerable lack of research on this aspect of USM, particularly the performance of the process with different work-tool combinations and under varying process conditions such as slurry grit size, tool material, abrasive material etc. In the present investigation, an experimental study has been conducted to assess the effect of slurry grit size on Machining rate and tool wear rate with twelve different work-tool combinations. It has been concluded that the abrasive grit size plays an important role in the variation of the machining performance of USM. The machining rate is found to decrease with a corresponding increase in the product of fracture toughness and hardness of the work material. Tool wear rate decreases with decrease in the fracture toughness of work material and increase in the strain hardening capability of tool material.