Author: L. S. ObrutskyPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Transmit-receive eddy current probes for circumferential cracks in steam generator tubes
Author: L. S. ObrutskyEddy-current Inspection for Steam Generator Tubing Program Quarterly Progress Report for Period Ending ...
Author: Oak Ridge National Laboratory. Metals and Ceramics DivisionPublisher:
ISBN:
Category : Eddy currents (Electric)
Languages : en
Pages : 20
Book Description
Transmit-receive eddy current probes for circumferential cracks in heat exchanger tubes
Author: L. S. ObrutskyEddy-current Inspection for Steam Generator Tubing Program Annual Progress Report for Period Ending ...
Author: Publisher:
ISBN:
Category : Eddy currents (Electric)
Languages : en
Pages : 16
Book Description
Improved Eddy-current Inspection for Steam Generator Tubing
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Oak Ridge National Laboratory is working on a number of steam generator and eddy-current problems, and one of the most promising developments is the use of reflection type probes. This probe consists of a driver coil encircling and coaxial with two pick-up coils, which are connected in opposition. The reflection probe is mounted perpendicular to the tube axis with one pick-up coil pressed against the surface like a pancake coil. Studies were performed to determine the best probe dimensions to maximize the ratio of defect signals to the undesired od property variations at different frequencies. Comparisons between reflection probes and the traditional circumferential or bobbin probes show that the former are more sensitive to defects and less sensitive to variation of properties outside the tube, such as tube supports, magnetite, and copper. The probe can be used in either multiple frequency or pulsed instruments in a manner similar to the bobbin probes. Since the undesired property variations have a smaller effect on the signal, they are easier to eliminate using multiple frequency or pulsed techniques. This has been demonstrated by test runs on standard steam generator tubes with different types of defects and different property variations. The reflection probe has given measurements of actual IGSCC cracks that compare well to the metallographic results. This type of probe has very good resolution and gives fine and accurate scans of the tubing, but is more expensive, complex, and slower. 10 figs., 2 tabs.
Eddy current inspection reliability for circumferential crack detection in bngs-a steam generator tubes
Author: S. P. SullivanReview of Progress in Quantitative Nondestructive Evaluation
Author: Donald O. ThompsonPublisher: Springer Science & Business Media
ISBN: 1461553393
Category : Technology & Engineering
Languages : en
Pages : 2093
Book Description
These Proceedings, consisting of Parts A and B, contain the edited versions of most of the papers presented at the annual Review of Progress in Quantitative Nondestructive Evaluation held at University of San Diego, San Diego, CA, on July 27 to August 1, 1997. The Review was organized by the Center for NDE at Iowa State University, in cooperation with the Ames Laboratory of the USDOE, the American Society of Nondestructive Testing, the National Institute of Standards and Technology, the Federal Aviation Administration, and the National Science Foundation IndustrylUniversity Cooperative Research Centers. This year's Review of Progress in QNDE was attended by approximately 370 participants from the US and many foreign countries who presented a total of approximately 350 papers. As usual, the meeting was divided into 36 sessions with four sessions running concurrently. The Review covered all phases of NDE research and development from fundamental investigations to engineering applications and inspection systems, and methods of inspection science from acoustics to x-rays. The Review continues to experience some fluctuations in size, mostly under pressure from a decrease in funding for NDE research at the US Federal level, but increased participation from foreign laboratories has more than made up the difference. The Review is ideally sized to permit a full-scale overview of the latest developments in a collegial atmosphere that most participants favor. The opening plenary session this year concentrated on advances in imaging technologies and methodologies that have been made in recent years. Dr. K.
Materials Evaluation
Author: Publisher:
ISBN:
Category : Nondestructive testing
Languages : en
Pages : 880
Book Description
Applied Mechanics Reviews
Author: Non-Destructive Testing
Author: J. M. FarleyPublisher: Elsevier
ISBN: 1483146723
Category : Technology & Engineering
Languages : en
Pages : 935
Book Description
Non-Destructive Testing, Volume 4 contains the proceedings of the Fourth European Conference held in London on September 13-17, 1987. Contributors explore a variety of topics related to non-destructive testing (NDT), including ultrasonic techniques, ultrasonic systems, electromagnetic techniques, condition monitoring of plant and structures, and magnetic particle and penetrant techniques. This text is comprised of 98 chapters; the first of which describes an ultrasonic technique for the assessment of the fat content of live beef animals for breeding purposes. Attention then turns to measurements of the longitudinal ultrasonic wave attenuation in spheroidal graphite iron test pieces subjected to fatigue loads. The chapters that follow focus on ultrasonic imaging; dry coupling probes; an expert system for ultrasonic examination of fuel rods; engineering and medical applications of diagnostic ultrasound; and signal processing of 3D maps of eddy currents. The reader is also methodically introduced to automation of eddy current testing; the use of artificial intelligence in vibration-based health monitoring; automated inspection of magnetic particles; and the theory and practice of acoustic emission. This text concludes with a chapter that reviews the NDT research program of the National NDT Center of Harwell Laboratory in the UK. This book will be of interest to materials scientists, materials engineers, and metallurgists.