Influence of the Laser-Beam Distribution on the Seam Dimensions for Laser-Transmission Welding: A Simulative Approach

被引：19

作者：

Aden M. ^{[1
]}

机构：

[1] Fraunhofer Institute for Laser Technology ILT, Steinbachstr. 15, Aachen

来源：

Lasers in Manufacturing and Materials Processing | 2016年 / 3卷 / 2期

关键词：

Heat conduction; Laser-transmission welding; Light scattering; M-shape beam; Weld seam;

D O I：

10.1007/s40516-016-0023-x

中图分类号：

学科分类号：

摘要：

Radiation propagation and temperature development are simulated for laser-transmission welding of polycarbonate and polybutylene terephthalate parts. The simulations are carried out for a Gaussian- and an M-shape laser beam. For polycarbonate the shape of the laser beam is preserved, while for polybutylene terephthalate it is altered due to scattering processes. The resulting intensity and integrated intensity distribution in the joining zone are calculated for both polymers. They give rise to different temperature fields. The dimensions of the model seam are approximated by the dimensions of the melt isotherm. For polycarbonate the seam generated by a Gaussian beam has a non-homogeneous thickness and a width that is smaller than the beam diameter. For an M-shape beam it has a homogeneous thickness and its width scales with the width of the integrated intensity. For polybutylene terephthalate volumetric scattering destroys the original beam shape in the joining zone. The distributions of the integrated intensities and the dimensions of the seam are similar for both types of beams. © 2016, Springer Science+Business Media New York.

引用

页码：100 / 110

页数：10

共 38 条

[1]

Grewell D.A., Application with infrared welding of thermoplastics, ANTEC, 1999, pp. 1411-1415, (1999)

[2]

BASF Aktiengesellschaft, Transmission Laser-Welding of Thermoplastics, (2001)

[3]

Bachmann F.G., Russek.: Laser welding of polymers using high power diode lasers, Proc. SPIE, pp. 505-518, (2002)

[4]

BASF Corporation: Innovations in laser welding of thermoplastics., (2002)

[5]

Russek U., Gillner A., Poggel M., Joining with light, Kunststoffe Int, pp. 50-54, (2006)

[6]

Haberstroh E., Hoffmann W.-M., Poprawe R., Fahri S., Applications of laser transmission processes for the joining, Microsyst. Technol, pp. 632-639, (2006)

[7]

Klotzbuecher T., Letschert M., Braune T., Drese K.-S., Doll T., Diode laser welding for packaging of transparent micro-structured polymer chips, Bachmann, F.G., Hoving, W., Lu, Y., Washio, K. (Eds.), Lasers and applications in science and engineering. 610704–610704-14., SPIE, (2006)

[8]

Prabhakaran P., Kontopoulou M., Zak G., Bates G.J., Baylis B.K., Contour laser - laser-transmission welding of glass reinforced nylon 6, J. Thermoplastic Compos. Mater, pp. 427-439, (2006)

[9]

Geiger M., Frick T., Schmidt M., Optical properties of plastics and their role for the modelling of the laser transmission welding process, Prod. Eng. Res. Devel, pp. 49-55, (2009)

[10]

Ghorbel E., Casalino G., Abed S., Laser diode transmission welding of polypropylene: geometrical and microstructure characterisation of weld, Mater. Des, pp. 2745-2750, (2009)

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