Eddy current imager based on bobbin-type hall sensor arrays for nondestructive evaluation in small-bore piping system

Jun, Jongwoo; Lee, Jinyi; Kim, Jungmin; Le, Minhhuy; Lee, Sehoon
January 2013
AIP Conference Proceedings;Jan2013, Vol. 1511 Issue 1, p502
Academic Journal
A bobbin coil with bobbin-type solid-state Hall sensor arrays was proposed for eddy current testing. A 32×32 matrix of InSb Hall sensors was set on a cylinder 15 mm in diameter and 25 mm long. The distorted alternating magnetic fields around inner diameter (ID) and outer-diameter stress corrosion cracks (ODSCCs)were imaged at 1 fps. The effectiveness of the proposed techniquewas verified with a standard copper alloy specimen with hole-type circumferential ID-and ODSCCs.


Related Articles

  • Optimization of a Pan Cake Coil Dimensions for Flaw Sizing in Pipes: Eddy Current Benchmark Problem — 3. S., Veeraraghavan; Balasubramaniam, Krishnan // AIP Conference Proceedings;2004, Vol. 700 Issue 1, p1574 

    The benchmark problem posed by the World Federation of NDE Centers for Eddy Current Models is discussed here with a proposed Finite Element based solution. © 2004 American Institute of Physics

  • Natural Crack Sizing Based on Eddy Current Image and Electromagnetic Field Analyses. Endo, H.; Uchimoto, T.; Takagi, T.; Nishimizu, A.; Koike, M.; Matsui, T. // AIP Conference Proceedings;2006, Vol. 820 Issue 1, p720 

    An eddy current testing (ECT) system with multi-coil type probes is applied to size up cracks fabricated on austenite stainless plates. We have developed muti-channel ECT system to produce data as digital images. The probes consist of transmit-receive type sensors as elements to classify crack...

  • FLEXIBLE AND ARRAY EDDY CURRENT PROBES FOR FAST INSPECTION OF COMPLEX PARTS. Marchand, B.; Decitre, J. M.; Casula, O. // AIP Conference Proceedings;2/22/2010, Vol. 1211 Issue 1, p385 

    Eddy Current is a powerful mean of detection of detects located in conductive parts. This technique has already proved great performances and brought solutions to different industrial issues in nuclear or aeronautics domains for instance. Probes used in Non Destructive Testing (NDT) are mainly...

  • Non-destructive examination using a flexible multi-coil eddy current probe for weld surfaces of core internal components of nuclear power plants. Nishimizu, A; Endo, H; Tooma, M; Otani, K; Ouchi, H; Yoshida, I; Nonaka, Y // Insight: Non-Destructive Testing & Condition Monitoring;Mar2012, Vol. 54 Issue 3, p134 

    An eddy current testing (ECT) probe has been developed for inspecting the nickel-based alloy welded surfaces of components in the reactor pressure vessels of nuclear power plants. A flexible multi-coil eddy current probe has consistent detection sensitivity for surface flaws in the inspection...

  • Eddy Current Flexible Probes for Complex Geometries. Gilles-Pascaud, C.; Decitre, J. M.; Vacher, F.; Fermon, C.; Pannetier, M.; Cattiaux, G. // AIP Conference Proceedings;2006, Vol. 820 Issue 1, p399 

    The inspection of materials used in aerospace, nuclear or transport industry is a critical issue for the safety of components exposed to stress or/and corrosion. The industry claims for faster, more sensitive, and more flexible techniques. Technologies based on Eddy Current (EC) flexible array...

  • The use of eddy current arrays as a replacement for dye-penetrant inspection of generator and exciter end-rings. Ward, C. // Insight: Non-Destructive Testing & Condition Monitoring;Sep2005, Vol. 47 Issue 9, p543 

    Discusses the use of eddy current arrays as a replacement for dye-penetrant inspection of generator and exciter end-rings. Predominant failure mechanism associated with end-ring cracking; Lift-off distance between the coils and the inspection surface; Resolution between defects.

  • Simulation of the World Federation’s First Eddy Current Benchmark Problem. Tian, Y.; Li, Y.; Zeng, Z.; Udpa, L.; Udpa, S. S. // AIP Conference Proceedings;2004, Vol. 700 Issue 1, p1560 

    This work presents numerical results obtained by simulating the first eddy current benchmark problem proposed by the World Federation of Nondestructive Evaluation Centers (WFNDEC) as part of an international effort. The problem involves prediction of responses generated by eddy current coil...

  • Electromagnetic Testing of Magnetic Material by Rotating Uniform Eddy Current Probe. Hoshikawa, H.; Koyama, K.; Mitsuhashi, S. // AIP Conference Proceedings;2006, Vol. 820 Issue 1, p423 

    A rotating uniform eddy current probe composed of two exciting tangential coils and a detecting pancake coil can simultaneously conduct eddy current testing and magnetic testing of magnetic material. The eddy current testing detects parallel flaws to the probe scan direction and the magnetic...

  • A New Eddy-Current Self-Compensating Probe for Testing Conducting Plates. Komorowski, M.; Gratkowski, S.; Chady, T. // AIP Conference Proceedings;2006, Vol. 820 Issue 1, p369 

    This paper deals with a new eddy-current self-compensating probe for testing conducting plates. It consists of two exciting coils connected differentially. Between these coils, around a ferrite core, a signal coil is placed. The system of coils is situated inside an electromagnetic screen made...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics