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Structural Integrity Assessment of Ring Beam of a Pressurized Heavy Water Nuclear Reactor Using Impact-Echo Technique

Anish Kumar, M. Thavasimuthu, T. Jayakumar, P. Kalyanasundaram and Baldev Raj
Metallurgy and Materials Group
Indira Gandhi Centre for Atomic Research,
Kalpakkam-603 102.

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ABSTRACT

INTRODUCTION

EXPERIMENTAL

Mock-up blocks with simulated flaws

Inspection of the actual ring beam

Conclusions

ACKNOWLEDGEMENT

REFERENCES

  1. Anish Kumar, M.Thavasimuthu, and T.Jayakumar, "Examination of Concrete Structures for Detection of Defects using Impact Echo Technique" Proceeding of NDE 98, Trivendram, India, 1998, pp 54-57.
  2. Anish Kumar, T. Jayakumar, C. V. Subramanian and M. Thavasimuthu, "Testing of Concrete Structures for Determination of Strength and Detection of Flaws using Low Frequency Ultrasonic and Impact Echo techniques", J. Non-destructive Evaluation, Vol. 19 No. 2, 1999, pp43-46.
  3. Carsten Henriksen, Impact-Echo Testing, Concrete International, May 1995, pp 55-58.
  4. C. Cheng and Mary Sansalone, "The Impact echo response of concrete plates containing delaminations: numerical, experimental and field studies", Materials and Structures, 26, 1993, 274-285.
  5. Chia-Chi Chang and Mary Sansalone, " Effects of Impact-Echo signals caused by steel Reinforcing Bars and Voids around bars."., ACI Materials Journal, Sept-Oct. 1993, pp 421-434.
  6. Jiunn-Ming Lin and Mary Sansalone, "The transverse elastic impact response of thick hollow cylinders, J. Nondestructive Evaluation, Vol. 12 (2), 1993 pp 139-149.
  7. Mary Sansalone and Nicholas J. Carino, "Detecting honeycombong, the depth of surface-opening cracks an dungrouted ducts", Concrete International, April 1988, pp 38-46.
  8. Mary Sansalone and Nicholas J. Carino, "Detecting Delamination in concrete slabs with and without overlays using the Impact-Echo-method.", ACI Materials Journal, March. April 1989, pp 175-183.
  9. Mary Sansalone, "Impact-Echo: The Complete Story," The structural Engineering Journal of the American Concrete Institute, 1995.
  10. Operation manual for the DOCter Impact-Echo test system using the Echo Blue software, March 1996, Germann Instruments A/S, Emdrupvej 102, DK-2400 Copenhagen, Denmark.

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