Laser Machining of Structural Ceramics: An Integrated Experimental and Numerical Approach for Surface Finish Metadata
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- Main Title Laser Machining of Structural Ceramics: An Integrated Experimental and Numerical Approach for Surface Finish
- Series Title UNT Graduate Exhibition
Author: Vora, Hitesh D.Creator Type: PersonalCreator Info: University of North Texas
Author: Dahotre, Narendra B.Creator Type: PersonalCreator Info: University of North Texas
Organizer of meeting: University of North Texas. Toulouse Graduate School.Contributor Type: Organization
- Creation: 2013-03-02
- Content Description: Poster awarded first place in the 2013 UNT Graduate Exhibition in the Engineering category. This poster discusses laser machining of structural ceramics and an integrated experimental and numerical approach for surface finish.
- Physical Description: 1 p.
- Keyword: laser machining
- Keyword: structural ceramics
- Keyword: COMSOL™ Multiphysics
- Exhibition: UNT Graduate Exhibition, 2013, Denton, Texas, United States
Name: UNT Scholarly WorksCode: UNTSW
Name: UNT College of EngineeringCode: UNTCOE
- Rights Access: public
- Archival Resource Key: ark:/67531/metadc152429
- Academic Department: Materials Science and Engineering
- Display Note: Abstract: High energy lasers emerged as an innovative and potential industrial tool to fabricate complex shapes on structural ceramics which is otherwise difficult using conventional machining techniques. However, obtaining a desired surface finish at higher material removal rate during laser machining of structural ceramics is still a critical issue. In this situation, the better understanding of various physical phenomena such as heat transfer, fluid flow, recoil pressure, Marangoni convection, and surface tension and its influence on the evolution of typical surface topography during laser machining could be more helpful. In light of this, this study was attempted to present the state of the art of laser machining of alumina using an integrated experimental and computational approach. A multistep computational model based on COMSOL™ Multiphysics was developed to study the effect of various physical phenomena on the generation of surface topography for various laser machining conditions. Furthermore, this process model can be used as a handy tool for the process engineers to configure the process variables (laser power, scanning speed, pulse rate, size of overlap) to obtain the specified quality characteristics. The surface topography of laser machined alumina was measured by an optical profilometer and the results were compared with the computationally predicted topographic parameters with reasonably close agreement.