Download or read book Multifrequency Eddy Current Inspection for Cracks Under Fasteners written by G. H. Wilson and published by . This book was released on 1979 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the second phase of a two-phase program. Phase I, reported in TR-76-209, was directed toward the evaluation and demonstration of multiple frequency eddy-current (MFEC) using wing-splice samples and laboratory instrumentation to detect cracks under titanium and steel fasteners. This Phase II report covers the development evaluation of a prototype MFEC system for field use. The system was built around commercially available micro-computer modules coupled with in-house designed eddy current electronics, an eddy current probe, and a multifunction operator control panel. The system was 'trained' using two C-5A wing panel sections having sawcuts to simulate cracks. Tenth-inch sawcuts at the top of the second layer could be repeatedly detected using a decision algorithm based on a combination of four frequencies. The prototype system was evaluated during July, 1978, as part of the C-5A Structural Evaluation and Inspection Program (SEIP). Of approximately 400 fasteners inspected with the system, one suspect was found and later confirmed with another NDE method. In continued development of the MFEC technique, methods must be investigated which will be tolerant of variations in geometry found around rib stiffeners and single fastener rows. (Author).
Download or read book Aerospace Manufacturing Technology written by and published by Allied Publishers. This book was released on 1997 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book British Journal of Non destructive Testing written by and published by . This book was released on 1976 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of Progress in Quantitative Nondestructive Evaluation written by Donald O. Thompson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 2093 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Metals Abstracts written by and published by . This book was released on 1983-07 with total page 1250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1979 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of Progress in Quantitative Nondestructive Evaluation written by Donald Thompson and published by Springer. This book was released on 1982-09 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perhaps the largest symposium held annually in the area of quantitative nondestructive evaluation is the one which resulted in this book. The 1981 Review of Progress in Quantitative Nondestructive Evaluation (NDE) was held August 2-7 at the University of Colorado in Boulder. While the review was sponsored by the Materials Laboratory of the Air Force Wright Aeronautical Laboratories and the Defense Advanced Research Projects Agency as part of their sponsored research conducted through the Ames Laboratory of the U.S. Department of Energy, nearly 300 attendees, representing other government agencies and the industrial and university communities as well, participated in the technical presentations, poster sessions and discussions. The program emphasized various areas of interest in quantitative NDE, including topics related to the development of quantitative ultrasonic and eddy current techniques, other emerging techniques, considerations of im provements needed in the probability of flaw detection, and engineering applications which follow from technology transfer of research results. An example of this transfer is the utilization of the Born inversion algorithm for flaw sizing. The keynote address, "NDE--A Key to Enhanced Producti vity," was deli vered by Dr. Norman Tallan, Chief Scientist at the Air Force Materials Laboratory. Dr. Tallan's presentation concerned the importance and potential pay-off of moving the NDE inspection procedure forward to provide in-process inspection and control for manufacturing. This step requires the utilization of concepts and research pursued in quantitative NDE activities and the initiation of other key steps.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Nondestructive Evaluation for Structural and Biological Health Monitoring written by and published by . This book was released on 2001 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials Evaluation written by and published by . This book was released on 2003 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1993 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP written by and published by . This book was released on 1980 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Giant Magnetoresistance GMR Sensors written by Candid Reig and published by Springer Science & Business Media. This book was released on 2013-12-06 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of the giant magnetoresistance (GMR) effect in 1988, spintronics has been presented as a new technology paradigm, awarded by the Nobel Prize in Physics in 2007. Initially used in read heads of hard disk drives, and while disputing a piece of the market to the flash memories, GMR devices have broadened their range of usage by growing towards magnetic field sensing applications in a huge range of scenarios. Potential applications at the time of the discovery have become real in the last two decades. Definitively, GMR was born to stand. In this sense, selected successful approaches of GMR based sensors in different applications: space, automotive, microelectronics, biotechnology ... are collected in the present book. While keeping a practical orientation, the fundamentals as well as the current trends and challenges of this technology are also analyzed. In this sense, state of the art contributions from academy and industry can be found through the contents. This book can be used by starting researchers, postgraduate students and multidisciplinary scientists in order to have a reference text in this topical fascinating field.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1977 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalog of Government Patents written by and published by . This book was released on 1982 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalog of Government Patents Abstracts 1975 80 written by and published by . This book was released on 1981 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Training Guidelines in Non destructive Testing Techniques written by International Atomic Energy Agency and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
