Basic Research on the Nondestructive measurement and inspection method by the use of resonant photoacoustic instrumentation scheme

谐振光声仪器方案无损测量检测方法的基础研究

• 批准号: 13650044
• 负责人: HOSHIMIYA Tsutomu
• 金额: $ 1.6万
• 依托单位: Tohoku Gakuin University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650044/
• 关键词: photoacoustic; resonance; nondestructive; instrumentation; laser; 映像法

In this research subject, a new resonant photoacoustic spectroscopy (R-PAS) method was proposed. And the excitation of the resonant acoustic mode of the solid specimens with open and close structures was performed.In the year 2001, modulation frequency of the laser beam was tuned to the resonance frequency 975Hz for a metal tube with the length and inner diameter of 170mm and 6 mm, respectively. The Q-value for the resonance was about 10. On the other hand, The Q-value of the acoustic resonance for the open pipe with an artificial surface defect was decreased up to about 4. The imaging experiment was also performed by scanning with the slide stages with a fixed modulation frequency of the laser beam.In the year 2002, ultrasonic range experiments were carried out in addition to those performed in 2001. Experiments by the use of capacitive transducers were not sufficiently done, because it is not commercially sold. However, the feasibility of precise measurement of the length of the specimen was shown by exciting an inner wall of the tiny pipe-shaped object with a modulated laser beam at the ultrasonic frequency of 40KHz. Furthermore, the feasibility of the method to apply to detect the finished size of the small pipe-shaped specimen nondestructively, such as fuel injection nozzle, was also demonstrated.

本课题提出了一种新的共振光声光谱分析方法。2001年，对长170mm、内径6mm的金属管，激光调制频率调谐到共振频率975Hz。共振的Q值约为10。另一方面，具有人工表面缺陷的开口管道的声共振的Q值降低到约4。还通过以固定的激光束调制频率扫描载物台进行了成像实验。除了2001年进行的实验之外，2002年还进行了超声范围实验。使用电容换能器的实验没有充分完成，因为它没有商业销售。然而，精确测量的长度的试样的可行性，通过激发一个微小的管状物体的内壁与调制的激光束在超声频率为40千赫。此外，还论证了该方法应用于喷油嘴等小型管状试件成品尺寸无损检测的可行性。

项目成果

K.Ishikawa, S.Kikuchi, T.Hoshimiya: "Nondestructive Evaluation of Pipe-shaped Structured Materials by the Use of Acoustic Resonance Excited by Photoacoustic Effect"Proceedings of APCFS & ATEM '01. 162-166 (2001)

K.Ishikawa、S.Kikuchi、T.Hoshimiya：“利用光声效应激发的声共振对管状结构材料进行无损评估”APCFS 会议记录

T.Hoshiyama, K.Ishikawa, S.Kikuchi: "Resonant Photoacoustic Detection using Open-pipe Acoustic Resonance and its Applications"Analyitcal Science. Vol.17, NO.4. S469-s471 (2001)

T.Hoshiyama、K.Ishikawa、S.Kikuchi：“使用开管声共振的共振光声检测及其应用”分析科学。

T.Hoshimiya, K.Ishikawa and S.Kikuchi: "Resonant Photoacoustic Detection using Open-pips Acoustic Resonance and its Applications"Analytical Sciences. Vol.17, no.4. S469-s471 (2001)

T.Hoshimiya、K.Ishikawa 和 S.Kikuchi：“利用开孔声共振进行共振光声检测及其应用”分析科学。

T.Hoshimiya, M.Halliwell and P.N.T.Wells Ed.: "Resonant Photoacoustic Detection and Imaging Scheme"Acoustical Imaging, vol.25, (Kluwer/Plenum Press). 203-207 (2001)

T.Hoshimiya、M.Halliwell 和 P.N.T.Wells Ed.：“共振光声检测和成像方案”声学成像，第​​ 25 卷，（Kluwer/Plenum Press）。

K.Ishikawa, S.Kikuchi, T.Hoshiyama: "Nondestructive Evaluation of Pipe-shaped Structured Materials by the Use of Acoustic Resonance Excited by Photoacoustic Effect"Proceedings of APCFS & ATEM '01. 162-166 (2001)

K.Ishikawa、S.Kikuchi、T.Hoshiyama：“利用光声效应激发的声共振对管状结构材料进行无损评估”APCFS 会议记录