안효석 김두인 2024-01-21T13:16:34Z 2024-01-21T13:16:34Z 2022-01-10 2000-10 1229-4845 https://pubs.kist.re.kr/handle/201004/141039 Ultrasonic evaluation of worn surface 초음파를 이용한 마멸표면 평가 Article 2 한국윤활학회지 = Journal of the KSTLE (Journal of the Korean Society of Tribologists and Lubrication Engineers), v.16, no.5, pp.351 - 356 한국윤활학회지 = Journal of the KSTLE (Journal of the Korean Society of Tribologists and Lubrication Engineers) 16 5 351 356 ultrasonic compressional waves worn surface surface damage wear test