3D polymer weld seam characterization based on optical coherence tomography for laser transmission welding applications

Schmitt R, Mallmann G, Devrient M, Schmidt M (2014)

Publication Type: Conference contribution

Publication year: 2014

Journal

Physics Procedia Elsevier BV

Publisher: Elsevier B.V.

Book Volume: 56

Pages Range: 1305-1314

Conference Proceedings Title: Physics Procedia

Event location: Fürth DE

DOI: 10.1016/j.phpro.2014.08.055

Abstract

Laser transmission welding is an established single-stage plastic joining process, which enables hermetically sealed joints under the workpiece surface. The process requires joining partners with proper degrees of transmission and absorption to the processing wavelength. For reaching a stable process an in-process quality assurance is very valuable. Current monitoring systems have a limited usage, as no quantitative information of the weld itself is obtained without its destruction. In medical and pharmaceutical applications a weld with leakage is e.g. unacceptable. The main objective of this paper is the presentation of the optical coherence tomography as a tool for the quality assurance in laser transmission welding. This approach enables the measurement of any residual gap, weld geometry, internal pores and leaks. The presented results show that this technique allows even the characterization of welds using joining partners with thicknesses of 2 mm or with glass fiber reinforcement levels of 30% per weight.

Authors with CRIS profile

Michael Schmidt Lehrstuhl für Photonische Technologien (LPT)

Additional Organisation(s)

Lehrstuhl für Photonische Technologien (LPT)

Involved external institutions

Fraunhofer-Institut für Produktionstechnologie (IPT) DE Germany (DE) Bayerisches Laserzentrum gemeinnützige Forschungsgesellschaft mbH (BLZ) DE Germany (DE)

How to cite

APA:

Schmitt, R., Mallmann, G., Devrient, M., & Schmidt, M. (2014). 3D polymer weld seam characterization based on optical coherence tomography for laser transmission welding applications. In Physics Procedia (pp. 1305-1314). Fürth, DE: Elsevier B.V..

MLA:

Schmitt, Robert, et al. "3D polymer weld seam characterization based on optical coherence tomography for laser transmission welding applications." Proceedings of the International Conference on Laser Assisted Net Shape Engineering, LANE 2014, Fürth Elsevier B.V., 2014. 1305-1314.

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