레이저 유도초음파(LBU)를 이용한 고온에서 물성측정에 관한 연구

• 영문명: A Study on the Material Properties in High Temperature by Using Laser Based Ultrasonic
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 백영기(Young-Ki Baek) 유동석(Dong-Suk Yoo)
• 간행물 정보: 『산업기술연구논문지』산업기술교육훈련논문지 제17권 2호, 139~145쪽, 전체 7쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2012.06.30

영문 초록

In this research, using laser-guided ultrasonic inspection system to measure the properties at high temperatures was on purpose. One of propose laser-based ultrasonic technology is a non-contacted, remote measurements. It is possible to measure an ultrasound at high temperatures using laser-based ultrasonic because the benefits of laser-based ultrasonic was a remote and non-contact measurement, but convention methods was not possible at high-temperatures. For the detection of ultrasound at high temperatures were a variety of researches in progress. This study is divided into two parts. First, according to the direction of the progress of the ultrasound, properties at normal temperature were detected. Depending on the progress of the ultrasound direction, the velocity of ultrasound was measured and compared respectively. Secondly, the specimen into the high temperature-electric furnace, changes in temperature, and the measurement of the ultrasound signal. Temperature of the furnace was changed 0 ℃ to 1000℃. In conclusion, depending on the temperature rise has reduced the speed of ultrasound. And Young s modulus was also reduced. However, the Poisson s ratio was increased. In particular, the velocity of ultrasound and Young s modulus is the increasing decline in the near a 400℃. Through this research in high-temperature laser-based ultrasonic to prove that the ultrasound was ideal for transmitting and receiving. Additional research is needed to overcome the environmental restrictions.

목차

Ⅰ. 서 론

Ⅱ. 관련이론

Ⅲ. 실험방법 및 결과

키워드

Ultrasonic(초음파) Non-Contact Measurement(비접촉 측정) GPIB(제어 통신) Phase Shift Method(위상이동법) Current Modulating(전류변조)