Effect of processing parameters on meltdown in quasi-simultaneous laser transmission welding

被引：19

作者：

Ghasemi, Hesam ^{[1
]}

Zhang, Ying ^{[1
]}

Bates, Philip J. ^{[1
]}

Zak, Gene ^{[2
]}

DuQuesnay, David L. ^{[3
]}

机构：

[1] Royal Mil Coll Canada, Chem & Chem Engn, Kingston, ON, Canada

[2] Queenss Univ, Mech & Mat Engn, Kingston, ON, Canada

[3] Royal Mil Coll Canada, Mech & Aerosp Engn, Kingston, ON, Canada

来源：

OPTICS AND LASER TECHNOLOGY | 2018年 / 107卷

关键词：

Quasi-simultaneous; Plastic welding; Laser transmission welding; Meltdown; Line energy; POLYMERS; THERMOPLASTICS; STRENGTH; MODEL;

D O I：

10.1016/j.optlastec.2018.05.047

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Meltdown is the term used to describe the collapse of two thermoplastic parts during welding. It is a critical process parameter in the laser-transmission welding of thermoplastics. This study examines the effect of quasi-simultaneous (QS) laser transmission welding (LTW) processing parameters including input power (P), number of passes (N), scan speed (V), total scan length (L-S) and weld pressure on the meltdown behavior of polycarbonate (PC) and polypropylene (PP), using a T-shaped test assembly. The total meltdown is shown to depend linearly on the total line energy (LET) defined as the product of P and N divided by V. Increasing L-s increases the critical LET for meltdown to begin. A simple model is presented that captures the main elements of meltdown in this thermoplastic welding process. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：244 / 252

页数：9

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