W. Arnold

Fraunhofer Institute for Nondestructive Testing

Papers

Total Citations

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About

W. Arnold is a researcher specializing in non-destructive testing (NDT) and ultrasonic inspection, with a focus on advanced techniques for evaluating metallic components. His major contributions include pioneering work on high-frequency ultrasound for detecting surface-near porosity in die-casting components of non-ferrous metals, a method critical for quality control in manufacturing. His 2008 paper on this topic, which has garnered 4 citations, demonstrates the practical application of ultrasonic waves to identify subsurface defects that could compromise structural integrity. Additionally, Arnold explored self-tracking ultrasonic inspection in a 1995 study (3 citations), where he examined the use of a precision robot for automatic testing of complex geometries with free-form surfaces. This work integrated directly driven DC motors and high-accuracy optical angle sensors across three rotation and bending axes, enabling precise distance measurement between ultrasonic probes and workpieces. While his citation counts are modest, Arnold’s research addresses niche but vital industrial challenges, advancing the reliability of NDT methods for non-ferrous materials and automated inspection systems.