[2F3] Advanced techniques using eddy current array for orbital weld inspection
M Bouchard, L D Théroux, S Loffredo and O Bellavance
Eddyfi Technologies, Canada
Recent advances in eddy current array (ECA) have significantly expanded the range of components and structures that can be inspected for surface defect detection. ECA is used as a replacement for magnetic particle inspection and dye penetrant testing for detecting surface or near-surface cracks and discontinuities. ECA sensors offer superior detection, speed and automation compared to traditional single-element probes. Additionally, ECA can penetrate non-ferromagnetic surfaces to detect subsurface defects, making it possible to inspect both sides of thin-walled tubes in a single scan.
This paper discusses the inspection of thin-walled tubes used as fuel and hydraulic lines in aircraft and spacecraft. These small-diameter lines are often located in areas with limited access, where they are assembled by automated orbital welding. Even with a highly controlled welding process, small cracks and porosities may develop and propagate, leading to potential system failures. An ECA system has been developed for rapid circumferential inspection of these orbital welds, allowing defects to be detected in just a few seconds. This solution represents a significant time saving as a replacement for radiography and dye penetrant testing, which are the current methods of choice for this inspection.
This paper discusses the inspection of thin-walled tubes used as fuel and hydraulic lines in aircraft and spacecraft. These small-diameter lines are often located in areas with limited access, where they are assembled by automated orbital welding. Even with a highly controlled welding process, small cracks and porosities may develop and propagate, leading to potential system failures. An ECA system has been developed for rapid circumferential inspection of these orbital welds, allowing defects to be detected in just a few seconds. This solution represents a significant time saving as a replacement for radiography and dye penetrant testing, which are the current methods of choice for this inspection.
