OCT for Process Monitoring of Laser Transmission Welding: Inline tracking of weld seams enables monitoring and quality control of polymer welding processes. Issue 5 (14th October 2016)

• Record Type: Journal Article
• Authors: Schmidt, Robert; Ackermann, Philippe
• Is Part Of: Laser technik journal. Volume 13:Issue 5(2016:Nov.)
• Page Start: 15
• Page End: 18
• Publication Date: 2016-10-14
• Subjects: Lasers -- Periodicals; Lasers -- Périodiques; Electronic journals; 621.36605
• DOI: 10.1002/latj.201600030
• Languages: English
• ISSNs: 1613-7728

Abstract

Abstract: Non‐destructive monitoring of laser transmission welding of polymers is a crucial topic in different production areas. Process parameter deviation may result in product failure. Current monitoring often relies on post process or inline methods which are not able to give a qualitative process feedback. Optical coherence tomography (OCT) enables tomographic measurements of transparent material structures (weld seam and defects; Fig. 1) with a few microns resolution. It provides high accuracy for monitoring and quality assurance of pre, inline and post process situations.