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2013

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Applicability Of A Picosecond Laser For Micro-Polishing Of Metallic Surfaces, Abdullah Mohammad Khalid Hafiz Aug 2013

Applicability Of A Picosecond Laser For Micro-Polishing Of Metallic Surfaces, Abdullah Mohammad Khalid Hafiz

Electronic Thesis and Dissertation Repository

An increasing number of recent technological advancements is linked to the adoptions of ultra-short pulsed picosecond (ps) lasers in various material processing applications. The superior capability of this laser is associated with precise control of laser-material interaction resulted from extremely short interaction time. In this context, the present study explored the applicability of a ps laser in laser micro-polishing (LµP) of Inconel 718 (IN718) and AISI H13 tool steel. The melting regime ‒ a mandatory phase for LµP ‒ was determined experimentally by the variation of focal offset to attain desired laser fluence. The finite element formulation of heat transfer equation and ...