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Proposal on Calibration Methods of Visual Condition for Penetrant Testing and Magnetic Particle Testing

Isao TANAKA
Nuclear Systems Division, Hitachi, Ltd.,
1-1, Saiwai-cho 3-chome, Hitachi-shi,, Ibaraki-ken, Japan 317-8511
Phone: +81-294-23-5336, Fax: +81-294-23-6612
E-mail : isao_tanaka@cm.hitachi.hitachi.co.jp
Tetsuo TAGUCHI and Masahiro HOTTA
Nuclear Systems Division, Hitachi, Ltd.,
Ibaraki, Japan
Mineo NOMOTO , Daisuke KATSUTA and Kaoru SAKAI
Production Engineering Research Laboratory, Hitachi, Ltd., Yokohama, Japan
Takemitsu SATO
Japan Power Engineering and Inspection Corporation
Tokyo, Japan
Mikio TAKAGI
Science University of Tokyo
Chiba, Japan
Contact

ABSTRACT

1 INTRODUCTION

2 SMALLEST LINE-SHAPED INDICATION

3 LINE PAIR

Table 1: Results of remote visual testing

4 CALIBRATION TEST PIECE

Type of test piece Detected size (mm)
Direct visual testing Remote visual testing
Crack(on base metal) 24.0 23.7
Porosity 2.5 2.7
Crack(on weld) 25.0 25.0
Reference test piece(A-type) 4.5 4.5
Table 2: Results by direct visual testing and remote visual testing

5 PROPOSAL ON CALIBRATION METHODS OF Visual condition

6 CONCLUSIONS

ACKNOWLEDGMENT

REFERENCES

  1. I. Tanaka, T. Taguchi, T. Asano, K. Sakai, T. Sato and M. Takagi, "Guideline for penetrant testing on welds by indirect visual test,"Proc. of the seventh International Conference on Nuclear Engineering (1999), ICONE-7480.
  2. T. Asano, K. Sakai, T. Taguchi, I. Tanaka, T. Sato and M. Takagi, "Penetrant testing on welds using image processing," Proc. of the 4th International Conference on Quality Control by Artificial Vision (1998), pp. 497-503.
  3. T. Asano, K. Sakai, T. Taguchi, I. Tanaka, T. Sato and M. Takagi,"Application of Image Processing to Penetrant Test on Welds" Proc. of the 2nd Japan-US Symposium on Advances in NDT (1999), pp. 202-207.
  4. I. Tanaka, T. Asano, K. Sakai, T. Taguchi, T. Sato and M. Takagi,"Proposal on Calibration Test Piece for Penetrant Testing and Magnetic Particle Testing," Proc. of the 2nd Japan-US Symposium on Advances in NDT (1999), pp. 439-444.

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