Paper Title:
Evaluating the Micromachining Rate of Nanosecond Laser with Thermal Analysis
  Abstract

For optical micro- machinery processing, nanosecond laser possess a special advantage in using it as a fabrication method of smaller hole subjected to the minimum thermal distortion. Thus it has become an effective and powerful tool widely used in drilling, cutting and welding process for micro-manufacturing field. To estimate the working performance of pulsed laser, an auxiliary method in numerical skill or semi-empirical technology is usually utilized, where the important parameters including energy intensity, duration and wavelength of laser beam will be taken into account. Nevertheless, several troubles, the unstable numerical iteration for phase change and precise calibration of sensor required in the measuring process, seem to be still inevitable, and which easily makes the numerical calculation become more complicated, even the global ablating behavior will be lost. To compensate the inadequacy mentioned above, an analytic model of optical ablation for pulsed laser, based on the evaporation effect responsible for penetration mechanism, is then derived in this study. Here the penetrating behavior, during the micro-machining process, can be clearly examined with the consideration of plasma absorption. After compared with experimental results made by Chen and Schmidt for copper drilling and steel ablation for Tim, a better agreement of analytic results identifies the accessibility of proposed model which also contributes to the future investigation on pico-or femto- laser material processing.

  Info
Periodical
Advanced Materials Research (Volumes 126-128)
Edited by
Yunn-Shiuan Liao, Chao-Chang A. Chen, Choung-Lii Chao and Pei-Lum Tso
Pages
861-866
DOI
10.4028/www.scientific.net/AMR.126-128.861
Citation
J. E. Ho, H. T. Young, "Evaluating the Micromachining Rate of Nanosecond Laser with Thermal Analysis", Advanced Materials Research, Vols. 126-128, pp. 861-866, 2010
Online since
August 2010
Keywords
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: De Sheng Lu, Yu Zhou, Bei Wang, Yu Jin Wang, Jia Hu Ouyang, Hua Ke
Abstract:For the purpose of studying material cluster design and shape design of a certain arc-shaped thermal-protection component rationally, the...
1110
Authors: Da Ping Wan, Philip Mathew, Jun Wang
Abstract:Ultra-short pulsed laser ablation of crystalline silicon is characterized by a complicated heat diffusion process. In this research, a...
687
Authors: A.H. Hamdani, W. Ahmed, A. Ansar, R. Akhter, W.A. Farooq, M. Aslam
Abstract:A 40W Nd:YAG laser has been used to carry out parametric study the etching depth (ablation depth) for different optical glasses using...
172
Authors: Kohei Ogura, Jiang Zhu, Tomohisa Tanaka, Yoshio Saito
Abstract:In this research, machining characteristics of excimer laser ablation for three-dimensional machining of PMMA (Polymethyl methacrylate) is...
192
Authors: Sabina L. Campanelli, Nicola Contuzzi, Giuseppe Casalino, Antonio D. Ludovico
Chapter 4: Advanced Machining and Materials Processing Technology
Abstract:Laser ablation is a new, very flexible process for micro-fabrication of micro-moulds and other micro-system devices. This process is suitable...
1159