Loading...
Review on heat affected zone (HAZ) in laser machining
Abedin, Farhana
Abedin, Farhana
Citations
Altmetric:
Files
Loading...
Conference paper
Adobe PDF, 102.68 KB
Authors
Other Names
Location
Time Period
Advisors
Original Date
Digitization Date
Issue Date
2010-04-23
Type
Conference paper
Genre
Keywords
Subjects (LCSH)
Citation
Abedin, F. (2010). Review on heat affected zone (HAZ) in laser machining. -- In Proceedings: 6th Annual Symposium: Graduate Research and Scholarly Projects. Wichita, KS: Wichita State University, p. 63-64
Abstract
Laser machining being a non-contact process possesses several advantages such as no tool wear or damage and no contact force induced problems. Laser cutting involves thermal process and it does not depend on the strength and hardness of the work piece, thus making it ideal for cutting non-homogeneous material. In this research work several papers related to the heat affected zone (HAZ) of laser machining of CFRP and GFRP are reviewed. It was found that laser parameters such as specific laser energy, laser power, repetition rate, work piece temperature determine the extent of HAZ. In CFRP HAZ in perpendicular laser grooving is much higher than that in parallel grooving. Presence of nitrogen jet decreases the work piece temperature leading to lower HAZ. Observations of the HAZ area of CFRP material revealed fiber swelling of 50 or 60% and fibers near the top are seen to curl up. In case of GFRP charred black material called shell and melted glass fibers are observed in the HAZ. It is also observed that the extent of HAZ affect the static tensile and bending strengths of CFRP. Tensile strength reduces linearly as HAZ increases. A comparison of laser cutting on CFRP using three types of laser is also presented here. Nd:YAG laser cutting on CFRP at optimized parameters has produced least HAZ and highest bending strength.
Table of Contents
Description
Paper presented to the 6th Annual Symposium on Graduate Research and Scholarly Projects (GRASP) held at the Hughes Metropolitan Complex, Wichita State University, April 23, 2010.
Research completed at the Department of Mechanical and Industrial Engineering, College of Engineering
Research completed at the Department of Mechanical and Industrial Engineering, College of Engineering
Publisher
Wichita State University. Graduate School
Journal
Book Title
Series
GRASP
v.6
v.6