IPG Photonics has been granted a patent for a method that utilizes imaging signal density to monitor and control material processing, particularly in laser and e-beam welding. The system assesses weld quality and penetration by analyzing reflected imaging signals, enabling automated quality assessments and feedback for process adjustments. GlobalData’s report on IPG Photonics gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on IPG Photonics, Welding robots was a key innovation area identified from patents. IPG Photonics's grant share as of July 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.
Monitoring and controlling material processing using imaging signal density
The patent US12053835B2 outlines a method and system for material processing that integrates advanced imaging techniques to enhance the analysis of workpieces during processing. The method involves generating a process beam directed at a workpiece, alongside an imaging beam that produces interferometry outputs from reflections off the workpiece. This data is used to create multiple A-scans, which are then classified into categories related to various aspects of the workpiece, such as vapor channels, weld penetration depth, and material composition. The classification process is facilitated by a monitoring system that assesses the A-scans based on specific criteria, including imaging signal density, which is determined by evaluating the intensity of the signals captured.
Additionally, the patent describes enhancements to the method, such as modifying the workpiece to improve backscatter of the imaging beam and employing a wobble pattern in directing the process beam. This wobble pattern creates spatial variations that improve alignment between the imaging beam and the phase change regions of the workpiece. The system comprises a material processing unit and an inline coherent imaging (ICI) system, which work in tandem to generate and analyze the imaging data. The monitoring system plays a crucial role in processing the A-scan data, determining signal densities, and classifying the characteristics of the workpiece, thereby facilitating more precise material processing and analysis.
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