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http://dx.doi.org/10.3795/KSME-A.2014.38.10.1133

Measurement of Ultrasonic Nonlinear Parameter by Using Non-Contact Ultrasonic Receiver  

Kim, Jongbeom (Dept. of Mechanical Convergence Engineering, Hanyang Univ.)
Jhang, Kyoung-Young (School of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.10, 2014 , pp. 1133-1137 More about this Journal
Abstract
The ultrasonic nonlinear parameter ${\beta}$ is generally known as an effective parameter for evaluating material degradation. Thus far, most research has been conducted using a contact method. However, since measurement by this contact method is affected by the contact conditions between the transducer and the specimen, additional devices are required to maintain the contact conditions stable during the measurement. To avoid this inconvenience, this paper proposes a noncontact method. In this study, only the receiver was replaced with a noncontact receiver, and then, the ultrasonic nonlinear parameters measured by the newly developed noncontact receiver were compared with those measured by the contact receiver. Results obtained using both these receivers for heat-treated aluminum alloy specimens showed good agreement. From this result, we can confirm that the ultrasonic nonlinear parameter ${\beta}$ can be measured using the proposed noncontact ultrasonic method.
Keywords
Ultrasound; Nonlinear Parameter; Non-Contact; Aluminum Alloy; Aging;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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