• 넻빀寃깋
  • 븰젅룷듃
  • 끉臾
  • 湲곗뾽떊슜蹂닿퀬꽌
  • 痍⑥뾽옄猷
  • 뙆썙룷씤듃諛곌꼍
  • 꽌떇

끉臾 297嫄

testing techniques. So it is necessary to test integrity of the weld inside and to develop testing technique and equipment that can detect the flaws at the weld point in order to enhance reliability of the test result. In this study, we developed a suitable automated ultrasonic testing system that c
  • 럹씠吏 6럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援鍮꾪뙆愿닿궗븰쉶
  • 씠吏꾪쁺, 엫꽦吏, 諛뺤씡洹, 源쁽
An ultrasonic synthetic aperture focusing technique (SAFT) using a root mean square (RMS) velocity model is proposed for pulse-echo immersion testing to improve the computational efficiency. Considering the immersion ultrasonic testing of a steel block as an example, three kinds of imaging were stud
  • 럹씠吏 7럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2018.07.23
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援鍮꾪뙆愿닿궗븰쉶
  • Hongwei Hu, Hyunjo Jeong
The fatigue characteristics of A7075-T651 aluminum alloy were studied and compared with surface treatments of UNSM (Ultrasonic Nano-Crystal Surface Modification) technology. Fatigue characteristics of those are unearthed by using various fatigue testing machines of followings; the ultrasonic fatigue
  • 럹씠吏 7럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳湲곌퀎븰쉶
  • Chang-Min Suh, Seung-Hoon Nahm, Min-Soo Suh, Young-sik Pyun
The presence of noise and the degradation of time resolution adversely impact the reliability of detecting material\"s flaws by ultrasonic Non-Destructive Testing (NDT). Digital signal processing (DSP) methods offer powerful solutions to overcome these problems helping the inspectors to detect and i
  • 럹씠吏 8럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳湲곌퀎븰쉶
  • M. S. Mohammed, Kim Ki-Seong
Testing(NDT) is necessary in addition to joining process control. For electrofusion joints several non-destructive testing methods are available. The ultrasonic phased array technique is possible to detect various defects including wire deviations and regions with lack of fusion. In this studies, t
  • 럹씠吏 4럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.20
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援媛뒪븰쉶
  • Seong Hee Kil, Young Do Jo, Kee Bong Yoon
testing of the rocket motor using the ultrasonic wave is superior to the other testing methods about the ability to economical detect the defects. But, the signal analysis of the ultrasonic wave takes a lot of time and efforts because the time interval of the transmitted pulse and the received pulse
  • 럹씠吏 8럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援異붿쭊怨듯븰쉶
  • 源룞瑜, 瑜섎갚뒫
Ultrasonic testing for the KR60 railway in Korea has been conducted by single element ultrasonic testing. In this study, to overcome the limits of single element ultrasonic testing, phased array ultrasonic transducers for detecting defects on the KR60 rail were designed and analyzed based on the ins
  • 럹씠吏 7럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2018.08.23
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援鍮꾪뙆愿닿궗븰쉶
  • 源嫄댁슦, 꽌臾닿꼍, 理쒕궓寃, 源湲곕났, 沅뚯꽭怨, 源쁺泥
Ultrasonic testing of a reinforced concrete member by means of the ultrasonic testing apparatus is affected by the steel bars embedded in concrete. The reinforcement should be avoided whenever possible when selecting test locations, but there will be also the circumstances in which this may prov
  • 럹씠吏 4럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳嫄댁텞븰쉶
  • 븞옱썝, 뿰湲명솚, 젙닔쁺, 쑄꽍泥
Abstract 1. Introduction 2. Measurement Model for a Phased Array Ultrasonic Testing 3. Ultrasonic Measurement model for a phased array testing system 4. Ultrasonic Beam Fields in a Single Medium 5. Prediction of Phased Array Ultrasonic Signals 6. Summary References
  • 럹씠吏 8럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援鍮꾪뙆愿닿궗븰쉶
  • Joon-Soo Park, Hak-Joon Kim, Sung-Jin Song, Un-Hak Seong, Suk-Chull Kang, Young Hwan Choi
Purpose: Reliability is the most important factor to detect defects as wind turbines are deployed in large blades. The methods of detecting defects are various, such as non-destructive inspection and thermal imaging inspection. We propose the phased array ultrasonic testing method of non-destructive
  • 럹씠吏 12럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2018.12.06
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援떊猶곗꽦븰쉶
  • 엫꽑, 엫듅솚, 젙삁李, 吏닔젙, 궓臾명샇
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