Issue << content << Continuous Ultrasonic Thickness Measurement of Main Metal and Welded Joints


DOI:

2014. . No. 4(66) - Dec 2014, pp. 20-26

Continuous Ultrasonic Thickness Measurement of Main Metal and Welded Joints

A. E. Bazulin, V. V. Pronin, D. S. Tikhonov, H. Benites, O. O. Shnel

The problems of sampling ultrasonic thickness measurement are considered in this article. The application of methodologies and technologies using phased arrays are considered.
The principles of application of continuous thickness measurement of pipeline main metal and also measurement of pipeline welded joints bottom surface profile using antenna arrays technology and TOFD (time-of-flight diffraction) scheme are described. The simulations of the inspection scheme basic parameters of the technologies are carried out by the method of ray tubes with application the verified software CIVA.
Examples of application and technologies measurement results on test blocks are given in the article. The development perspectives of methods using digital antenna focusing for visualization and measurement of bottom surface profile are described.
 
References
  1. Secondary Piping Rupture Accident at Mihama Power Station, Unit 3, of the Kansai Electric Power Co., Inc. (Final Report). The Nuclear and Industrial Safety Agency. 2005, March 30.
  2. PNAE-G-7-031-91. Unifitsirovannye metodiki kontrolya osnovnyh materialov (polufabrikatov), svarnyh soedineniy i naplavki oborudovaniya i truboprodov atomnyh energeticheskih ustanovok. Ultrazvukovoy kontrol. Chast III. Izmerenie tolschiny monometallov, bimetallov i antikorrozionnykh pokrytiy [Uniform methods of control of basic materials (semi-finished product), welded joints and cladding of equipment and pipelines of nuclear power plants. Ultrasonic examination. Part III. Thickness measuring of monometal, bimetal and corrosion coating].
  3. ASTM E 2373. Standard Practice for Use of the Ultrasonic Time of Flight Diffraction (TOFD) Technique. ASTM International, Philadelphia, 1995.
  4. Bazulin E. G. Sravnenie system dlya ultrazvukovogo nerazrushayuschego kontrolya, ispolzuyuschego antennye reshenki ili fazirovannye antennye reshenki [Ultrasonic systems comparison for phased array and array probes]. Russian J. Nondestructive Testing. 2013, no.7, pp. 404–423.
 
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