Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30966
Title: A study of the heat-affected zone in the UV YAG laser drilling of GFRP materials
Authors: Yung, KC 
Mei, SM
Yue, TM 
Keywords: Heat-affected zone
UV YAG laser
GFRP materials
Issue Date: 2002
Publisher: Elsevier
Source: Journal of materials processing technology, 2002, v. 122, no. 2-3, p. 278-285 How to cite?
Journal: Journal of materials processing technology 
Abstract: This paper describes the characteristics of the heat-affected zone (HAZ) of a UV YAG laser-drilled hole in glass fiber reinforced plastic (GFRP) printed circuit boards. The structures of the HAZ produced by different laser parameters were analyzed. When drilled with lower power and repetition rate, a clear hole wall with very little black charred material was obtained. On the other hand, when drilled with high power and repetition rate, matrix recession and fiber protrusion were observed, also a loose coating was found covering the protruded glass fibers. The results also show that for a given repetition rate, the size of the HAZ increases with increase in average laser power. As for the effect of the pulse repetition rate, a peak value of HAZ width is reached at about 7 kHz for each given laser power, and beyond which the HAZ width decreases. A novel evaluation parameter, defined as the quotient of total area of the HAZ and the profile length, is suggested to quantify the size of the laser-induced HAZ in fiber reinforced composites.
URI: http://hdl.handle.net/10397/30966
ISSN: 0924-0136
EISSN: 1873-4774
DOI: 10.1016/S0924-0136(01)01177-3
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

28
Last Week
4
Last month
Citations as of Sep 17, 2017

WEB OF SCIENCETM
Citations

22
Last Week
0
Last month
0
Citations as of Sep 16, 2017

Page view(s)

32
Last Week
0
Last month
Checked on Sep 18, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.