댓글 0조회 수 140662추천 수 0
?

단축키

이전 문서

다음 문서

+ - Up Down Comment Print
?

단축키

이전 문서

다음 문서

+ - Up Down Comment Print

Comparison of Ultrasonic Nonlinear Parameters Measured by PZT and LiNbO3 Transducers


http://aip.scitation.org/doi/abs/10.1063/1.4940514


View Affiliations
 
ABSTRACT
The ultrasonic nonlinear techniques have been known as effective methods to evaluate a microstructure change of material. The ultrasonic nonlinear characteristic can be evaluated by the second-order ultrasonic nonlinear parameter β determined from the amplitudes of fundamental and second harmonic frequency components. The ultrasonic nonlinear parameter is generally measured by using a contact transducer; PZT and LiNbO3 transducers are commonly used. However, the measurement result may be dependent on the equipment. Here in, we are curious about whether the nonlinear parameters measured by different transducers are identical. Therefore, in this study, we compare the ultrasonic nonlinear parameters measured by different transducers, PZT and LiNbO3. For the experiment, the Al6061 specimens heat treated at 220°C with different aging time 60, 600, and 6000 min were prepared, and then the ultrasonic nonlinear parameter was measured by using two different kinds of transducer, PZT and LiNbO3. The results showed that the tendency of measured nonlinear parameter was similar regardless of the type of transducer.

Board Pagination ‹ Prev 1 2 3 Next ›
/ 3
Designed by hikaru100

나눔글꼴 설치 안내


이 PC에는 나눔글꼴이 설치되어 있지 않습니다.

이 사이트를 나눔글꼴로 보기 위해서는
나눔글꼴을 설치해야 합니다.

설치 취소

SketchBook5,스케치북5

SketchBook5,스케치북5

SketchBook5,스케치북5

SketchBook5,스케치북5

ISNDE Laboratory
203-2,Engineering Center Annex
Hanyang University,
222 Wangsimni-ro, Seongdong-gu
Seoul 04763, Korea
04763 서울특별시 성동구 왕십리로 222
한양대학교 공업센터 별관 203-2호
지능계측 및 비파괴평가 연구실
Tel: 02 - 2220 - 4220
Fax: 02 - 2299 - 7207