Results 211 to 220 of about 9,736 (263)

Machine Learning for Nondestructive Evaluation

1991
This paper reports on the current status of a collaborative project exploring applications of machine learning methods to Nondestructive Evaluation (NDE). It presents initial results of applying AI methods for inductive learning, feature extraction, and function-finding to support the ultrasonic diagnosis of defective metal parts.
Paul O'Rorke, Steven Morris, Michael Amirfathi, William E. Bond, Daniel C. St. Clair   +4 more
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An overview of nondestructive evaluation methods

Practical Failure Analysis, 2003
ondestructive evaluation is described as nondestructive testing (NDT), nondestructive inspection (NDI), and nondestructive examination (NDE). The activities associated with the evaluation include testing, inspection, and examination and primarily involve looking at (or through) and/or measuring some characteristic of an object.
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Invariance algorithms for nondestructive evaluation

2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221), 2002
A new class of invariant pattern recognition algorithms is required for interpreting nondestructive evaluation signals that occur during in-line inspection of components with varying material properties. This paper presents the theoretical development of these invariance algorithms and provides experimental validation of these algorithms using ...
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Statistical Models for Nondestructive Evaluation

International Statistical Review / Revue Internationale de Statistique, 1995
Les methodes de tests non destructifs (TND) sont utilisees depuis longtemps pour les etudes de securite et de duree de vie des structures complexes et de leurs composants. Des formes multiples d'analyses statistiques des donnees de fiabilite des TND existent dans la bibliographie. Le present article passe en revue d'une maniere generale les difficultes
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SQUIDs for nondestructive evaluation

Journal of Physics D: Applied Physics, 1997
We attempt a comprehensive review of all published research in nondestructive evaluation (NDE) performed with the superconducting quantum interference device (SQUID) magnetometer since the first work was reported in the mid-1980s. The SQUID is the most sensitive detector of magnetic flux known.
W G Jenks, S S H Sadeghi, J P Wikswo
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Nondestructive evaluation of piers

SPIE Proceedings, 2015
This paper proposes a vibration-based damage detection method designed for structural elements subjected to important vertical loads, as columns or pillars. The method is based on the relation existing between the energy stored in the pillar in several vibration modes and the corresponding natural frequencies. For a certain mode, this energy results as
Ionica Negru, Gilbert-Rainer Gillich, Zeno-Iosif Praisach, Marius Tufoi, Edwald-Viktor Gillich   +4 more
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Wavelets and Nondestructive Evaluation

1993
Ultrasonics plays an important role in quantitative nondestructive evaluation of materials. Useful information on the integrity of the material can be obtained by analyzing ultrasonic wave reflection and diffraction from flaws. However, the interpretation of ultrasonic data may be in some situations very difficult due to poor signal-to-noise ratio or ...
Moubarik, Sif-Eddine, De Vadder, Daniel, Benoist, P.   +2 more
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Nondestructive Evaluation of Composites

Offshore Technology Conference, 1997
Abstract Composite structures have been used in the fabrication of aircraft structures for the past three decades. Most primary aircraft structures are made from carbon epoxy composites while fairing and antenna .ire made from fiberglass and Kevlar composites.
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Center for Nondestructive Evaluation

MRS Proceedings, 1985
ABSTRACTThe Johns Hopkins University Center for Nondestructive Evaluation (CNDE) has recently been established as an interdisciplinary center for research and instruction which draws on the resources and talent of the School of Engineering, the Applied Physics Laboratory, and the School of Medicine.
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Acoustographic nondestructive evaluation

IEEE 1988 Ultrasonics Symposium Proceedings., 2003
The authors discuss some of the basic principles underlying acoustography and its use as a nondestructive evaluation methodology. Acoustography is a process of forming ultrasonic images in a manner analogous to radiography and fluoroscopy. A sound source insonifies the test object with a uniform field of ultrasound. As the ultrasonic waves pass through
J.S. Sandhu, R.E. Thomas
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