Evaluation of high power ultrasonic energy transmission characteristics of a liquid matching layer by using sonoluminescence

Jungsoon Kim; Haeun Kim; Jinyoung Son; Moojoon Kim

doi:10.7776/ASK.2021.40.5.408

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2021 Vol.40, Issue 5 Preview Page Next Page

Research Article

Evaluation of high power ultrasonic energy transmission characteristics of a liquid matching layer by using sonoluminescence 소노루미네센스를 이용한 액체정합층의 고출력 초음파에너지 전달특성 평가

30 September 2021. pp. 408-416

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Abstract

In the ultrasonic dispersion, in order to avoid direct contact of the radiation surface of ultrasonic transducers with a liquid sample, the liquid sample is separated by a glass container and it receives ultrasonic energy through an acoustic medium. The transmission efficiency of the ultrasonic energy in the multi-layered ultrasonic system is an important factor. In this study, we suggested a method that can improve the ultrasonic energy transfer efficiency by using a propylene glycol solution as a liquid matching layer in the multi-layered acoustic system. In this method, a propylene glycol solution was filled between the Langevin-type ultrasonic transducer and the luminol solution and the sonoluminescence phenomena in the luminol solution, which is caused by nonlinear effect of high power ultrasound radiated from the transducer, was examined by using a Photo Multiplier Tube (PMT). The transmission efficiency depending on the concentration of propylene glycol solution was observed, and we can see that as the concentration of the propylene glycol solution increased, the matching effect increased while the acoustic attenuation increased. It was confirmed that there is an optimal concentration compromised these two conflicting conditions, and the optimum concentration of the propylene glycol solution was determined experimentally.

Keywords

Ultrasonic energy transfer

Sonoluminescence

Acoustic matching

Photo multiplier tube

Luminol

초음파 분산에 있어서 초음파의 방사면이 시료에 직접 닿는 것을 피하기 위해 액체시료는 유리용기에 의해 분리되어 음향매질에 의해 초음파 에너지를 받는다. 이와 같이 다층구조로 이루어진 음향시스템에서 초음파에너지의 전달효율은 중요한 요소이다. 본 연구에서는 다층구조로 이루어진 음향시스템에 있어서 프로필렌글리콜 용액을 액체정합층으로 사용하여 초음파에너지 전달효율을 개선하는 방법을 제안하였다. 제안된 방법에서는 란주반형 초음파 트랜스듀서와 루미놀용액과의 사이에 프로필렌글리콜 용액을 액체정합층 매질로 채우고, 초음파트랜스듀서로부터 방사되는 강력초음파의 비선형현상에 의해 발광되는 루미놀용액의 발광정도를 광전증폭관을 이용하여 관측하여 루미놀용액으로의 초음파에너지 전달 효율을 조사하였다. 프로필렌글리콜 농도변화에 따른 초음파에너지 전달정도를 측정하였고, 그 결과 프로필렌글리콜 용액의 농도가 증가함에 따라 정합효과는 증가하는 반면 음향감쇠가 증가함을 알 수 있었다. 이들 두 상충되는 조건이 절충되는 최적의 농도가 존재함을 확인할 수 있었으며, 프로필렌글리콜 용액의 최적 농도를 실험적으로 결정할 수 있었다.

키워드

초음파에너지전달

소노루미네센스

음향정합

광전증폭관

루미놀

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Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 40
No :5
Pages :408-416
Received Date : 2021-06-30
Revised Date : 2021-07-30
Accepted Date : 2021-08-19
DOI :https://doi.org/10.7776/ASK.2021.40.5.408

The Journal of the Acoustical Society of Korea ISSN:1225-4428(Print) 2287-3775(Online) 한국음향학회지

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