| NDTnet
ISSN: 1435-4934 The e-Journal of Nondestructive Testing & Ultrasonics - Publisher
The Journal's focus is on Nondestructive Testing (NDT) and Ultrasonic Testing (UT) in particular | Departments
Exhibition Virtual Library UT by A-Z UTonline Forum NDT NewsWeb Abstracts Publications Events Editorial | |||||
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| This Month's Introduction |
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On this virtual NDT site we provide contents which are frequently used at "real life" conferences. The scope ranges from Professional Programs (Articles), Discussion Session (Forum) and in cooperation with NDTnet Exhibition we offer a SPECIAL MAY '98 EXHIBITION on Ultrasonic Flaw Detectors. Furthermore a training file Q & A provided by NDT TestMaker and A Glossary make this issue a comprehensive Buyers Guide. A Survey of Ultrasonic Flaw Detectors characterizations could just make your next instrument purchase a lot easier! Please take a few minutes and We are pleased to welcome Linas Svilainis from the Ultrasound Research Center at Kaunas University of Technology, as our chairman of this month's UTonline Forum. His knowledge is concentrated in equipment design and ultrasonic data processing. He invites you to share any ideas or questions you have relating to this topic. |
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UT Equipment
| The Hardware Concept of a new Digital Ultrasonic NDE System the publications related to "pure" ultrasonic applications overhelm the applications related to hardware. Such situation might be explained by "company secrets" concept partially. Activities of our center cover the ultrasonic systems hardware and software design. Ideas and problems met here we would like to share in this publication. L.Svilainis and V.Puodziunas Kaunas University of Technology, Studentu 50, TEF#340, LT-3031 Kaunas, Lithuania | ||||||
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UT Equipment
| New Electronic Components and Software for Single and Multi-Channel Ultrasonic Inspections of Piping and Components The article was presented and published during the conference "Phenomena and Applications of Ultrasound -- Ultrasonic Flaw Detection in Russia", held in honor of the 100-year birthday of Professor Sokolov, in June 1997 in St. Petersburg, Russia. Authored by J. Kretow and K. Pavros, QNET St. Petersburg B. Rockstroh and W. Kappes, Fraunhofer-IZFP Translated to English by M. Dalichow and M. Calcamuggio, QNET USA | 
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UT Equipment
| Inexpensive Ultrasonic Equipment for Fingerprint Recognition Applied to
Material Testing The technique of ultrasonic camera which was designed for the imaging and recognition of finger ridge patterns was applied to material testing. The article describes the princples of the equipment design and the very first results of flaw detection at a brass cylinder are presented. The device is designed to produce 3D Pictures of flaws or structure of biological objects. We hope to achieve such pictures in few weeks. Wieslaw Bicz; Optel, Wroclaw Poland | 
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UT Equipment
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Specifications of Digital Ultrasonic Instruments in In-Service Inspection of Nuclear Power Plants
[Anforderungen bei der wiederkehrenden Ultraschallprüfung von Reaktorkomponenten mittels blendenfreier Prüfsysteme. Recently, quasi-gate-free digital ultrasonic instruments were developed for in-service inspection of NPP (Nuclear Power Plants) to improve the inspection results and decrease test and evaluation time. The signal recognition and the data reduction for inspection visualization are important issues in the application of these new systems. G. Csapo, T. Just | ||||||
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UT Equipment
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Analog characteristics of Ultrasonic Flaw Detectors Analog characteristics of ultrasonic flaw detectors are essential for successfully solving today's inspection tasks. With modern computerization, analog components may not always receive their fair share of attention. The article highlights some important transmitter and receiver elements, e.g., pulser type, damping frequency, bandwidth, filter. Some of the text reviews analogs of the new standard EN 12688-1. R. Diederichs, NDTnet | 
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Characterization and Verification of Ultrasonic Examination -
Instruments We summarize the new European Standard EN 126681-1 Part 1: Instruments. This standard gives methods and acceptance criteria for verifying the electronic performance of ultrasonic instruments. with A-scan displays, employed for manual ultrasonic non-destructive examination. A specific group of these methods and acceptance criteria shall be used at least once every twelve months to verify the fitness for purpose of an ultrasonic instrument during it's lifetime. Other two parts of this standard consists of Probes (2) and Combined Equipment (3) R. Diederichs, NDTnet | ||||||
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UT Equipment Application
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Ultrasonic non-destructive testing system of journal bearings
The structure and the principle of ultrasonic non-destructive testing system of journal bearings are described in this article. The testing principle is based on the influence of adhesion quality on the amplitude of ultrasonic signal, reflected from the interface between layer and main metal. The measurements are performed using pulse response technique with 5 MHz immpersion transducers. The developed ultrasonic system consist of the electronic unit, scanner, testing tank and IBM PC type computer with specialized software. The test results can be presented in the usual A, B, C scan modes imcluding options of signal processing, which allow determine the zones of delamination. The experimental results and the method for the evaluation of the total area of detectyed zones of delamination are presented also. R.Kazys, L.Mazeika, A.Voleisis, R.Sliteris, K.Kundrotas, V.Augutis* Ultrasound Research Center *Department of Electronic Instruments Kaunas University of Technology | 
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UT Equipment
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Fingerprint structure imaging based on an ultrasound camera This paper describes the design of an ultrasonic camera for the near surface structure observation of solid objects and is suitable for the finger ridge pattern imaging (i.e. pattern which is reflected in a fingerprint). It can also be employed for all other sorts of structures which have ultrasound detectable changes in the near surface structure, both natural and artificial (e.g. created for information recording). Presented are also perspectives of further development of the camera. Wieslaw Bicz et al; Optel Poland. | 
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| UT Equipment |
Q & A of Ultrasonic Instrument Characterizations
Materials Research Institute Canada contributed this month's Q&A from their NDT TestMaker software. Edited by R. Diederichs | ||||||
| NDT Equipment Archive |
NDTnet resources related to Ultrasonic Flaw Detectors Access to 38 Full Text articles as well as more resources of other NDTnet departments. | NDTnet
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LAST MONTH'S [April '98] UPDATE: WELD INSPECTION
| UT | Weld
Review: Quality assurance of spot-welded joints - use of high frequency ultrasonic technology | Rolf Diederichs reviewed this article during the April UTonline Forum. Other forum posts of Ultrasonic Examination of Spot Welds showed that this subject is a topical theme in the automotive industry. (James Dolfi) For this and other weld topics we expect soon answers from the American Welding Society (AWS). Watch NDTnet for future updates on Weld Testing. | ||
