Titlebook: Review of Progress in Quantitative Nondestructive Evaluation; Volume 2A / Volume 2 Donald O. Thompson,Dale E. Chimenti Book 1983 Springer S

FLAIL

Eddy-Current Probe Designetection of half-penny surface cracks in nonmagnetic conducting materials. The study applies to probes which excite an approximately uniform spatial field over the length of the crack at the surface of the material. In practical terms, this means that the probe is not smaller than the crack length i

议程

Eddy Current Probe Design and Matched Filtering for Optimum Flaw Detectiongnals can, however, be detected in the presence of liftoff noise if a large enough phase angle exists between them. Figure 1(a) shows how this phase discrimination can help in liftoff noise suppression. Here, the oscilloscope traces the complex impedance of the probe. The impedance plane has been ro

令人作呕

Development of an Eddy Current Inspection Technique for Sleeved Engine Disk Bolt Holesds characterizing subsurface flaws in conducting materials. Presented in this paper are the results of some initial theoretical work aimed at the development of a reliable eddy current technique to detect and characterize defects in engine disk bolt holes under a 0.05″ stainless steel sleeve. The ch

INCH

BOOR

An Artificial Intelligence Approach to Ultrasonic Weld Evaluationethods. Field experience, based on conventional ultrasonic signal amplitude criteria, indicates that a large number of indications are recorded. Most of these are not due to cracks, but are inherent in the geometry of the specimen. Discrimination between crack and geometrical/weld (malignant vs. ben