Open AccessOCT for Process Monitoring of Laser Transmission Welding
Author(s) -
Schmitt Robert,
Ackermann Philippe
Publication year - 2016
Publication title -
laser technik journal
Language(s) - English
Resource type - Journals
eISSN - 1863-9119
pISSN - 1613-7728
DOI - 10.1002/latj.201600030
Subject(s) - process (computing) , welding , optical coherence tomography , computer science , laser , coherence (philosophical gambling strategy) , materials science , transmission (telecommunications) , quality assurance , laser beam welding , process engineering , mechanical engineering , optics , composite material , telecommunications , engineering , physics , operations management , external quality assessment , quantum mechanics , operating system
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.