Long-Range Testing of Welded Elbow Pipe Using the $\mathrm{T}(0,1)$ Mode Ultrasonic Guided Wave
スポンサーリンク
概要
- 論文の詳細を見る
An experimental investigation of sensitivity in defect detection in welded elbow pipes using the $\mathrm{T}(0, 1)$ mode guided wave was carried out. A piezoelectric ring-shaped sensor system was cramped on one of the two straight parts in the straight-elbow-straight setting. An artificial defect was introduced into the other straight part. To evaluate the sensitivities, the depth of the artificial defect was gradually increased to 2.0 mm by 0.05 mm increments. The following are the obtained experimental results. (1) Spurious signals due to the two welds, which could be markedly changed by varying the welding conditions were found. (2) These spurious signals interfered with and masked the defect signal, but changes in signal amplitude owing to the incremental defect could be sufficiently detected. (3) Sensitivities of defect detection in welded elbow pipes were approximately 1/4–1/5 that in a straight pipe. At the end of the paper, the characteristics of the observed waveform in the welded elbow pipes are discussed for use in the guided wave inspection.
- 2010-11-25
著者
-
Masuda Shuichi
Institute Of Technology And Science The University Of Tokushima
-
Nishino Hideo
Institute Of Science And Technology The University Of Tokushima
-
Yoshida Kenichi
Institute Of Science And Technology The University Of Tokushima
-
Nishino Hideo
Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan
-
Asano Tadashi
Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan
-
Mizobuchi Yuki
Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan
-
NISHINO Hideo
Institute of Engineering and Science, The University of Tokushima
-
YOSHIDA Kenichi
Institute of Engineering and Science, The University of Tokushima
関連論文
- Theoretical and Experimental Investigations of Transmission Coefficients of Longitudinal Waves through Metal Plates Immersed in Air for Uses of Air Coupled Ultrasounds
- Experimental Investigation of Mode Conversions of the $\mathrm{T}(0,1)$ Mode Guided Wave Propagating in an Elbow Pipe
- Precise measurement of pipe wall thickness in noncontact manner using a circumferential lamb wave generated and detected by a pair of air-coupled transducers (Special issue: Ultrasonic electronics)
- Simple method of generating for circumferential shear horizontal waves in a pipe and their mode identifications(introduction to the amazing world of sounds with demonstrations)
- Long-Range Testing of Welded Elbow Pipe Using the $\mathrm{T}(0,1)$ Mode Ultrasonic Guided Wave
- Tone-Burst Generation of Circumferential Guided Waves by a Bulk Shear Wave Sensor and Their Wide-Range Time–Frequency Analyses
- Highly Sensitive Detection of Defects in Piping Using Multireflecting Guided Wave Energy Trapping Method
- Generation of circumferential guided waves using a bulk shear wave sensor and their mode identification
- Efficient Generation and Detection of a Guided Wave in a Pipe using Guided Wave Reflectors
- Defect Detection of a Pipe Using a Guided Wave Generated by an Efficient Transduction with a Reflector