• Title/Summary/Keyword: 초음파비파괴검사

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放射線非破壞檢査技術 (II)

  • 황창규
    • Journal of the KSME
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    • v.21 no.6
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    • pp.428-438
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    • 1981

  • 초음파탐상은 방사선비파괴검사와 비교할 때, 객관성이 뒤지고 검사기술자의 능력에 따라 탐상 결과가 틀리며 실제로 적용하는 곳도 방사선비파괴검사보다 많지 않다. 또 자분 및 침투탐상검 사도 파이프라인에는 그렇게 많이 적용되지 않는다. 그리고 표면결함을 조사하기 위해서는 육만 또는 외관검사 처리하게 된다. 그러면 가장 많이 이용되고 있는 방사선비파괴감사에 대한 상세한 내용을 설명하기로 한다.

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Medical Application of the Nondestructive Ultrasonic Tests: Diagnosis of Micro Bone Fractures using Ultrasonic C Scan Images (비파괴 초음파 검사법의 의학적 활용: 초음파 C 스캔 영상을 이용한 미세 골절의 진단)

  • Choi, Min-Joo
    • Journal of the Korean Society for Nondestructive Testing
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    • v.22 no.4
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    • pp.377-385
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    • 2002

  • Ultrasonic tests employing non-ionizing radiation are preferred in nondestructive examinations since they are safe and simple in use. The same principles of the techniques have been taken as valuable tools in medical area for the diagnoses of diseases, in other words, defects of the human body. The paper overviews the principles of the medical diagnosis based on nondestructive ultrasonic tests, and then evaluates experimentally the clinical potential of C scan images not popular in medicine, for detecting the micro fractures of the cortical bone. In the experiment the micro bone fractures were created on the femurs of porks by loading three point bending forces (2-4kN) with the speed of 1 mm/min. As the extent of the fracture was altered, not only X ray images but also ultrasonic C scan images using a focused ultrasonic probe resonated at 25 MHz were obtained. The results showed that ultrasonic C scan images were capable of detecting the micro bone fractures which were not possible to identify by conventional X ray images.

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