|
|
|
|
| LEADER |
01000caa a22002652 4500 |
| 001 |
NLM177550198 |
| 003 |
DE-627 |
| 005 |
20250209054003.0 |
| 007 |
tu |
| 008 |
231223s1992 xx ||||| 00| ||eng c |
| 028 |
5 |
2 |
|a pubmed25n0592.xml
|
| 035 |
|
|
|a (DE-627)NLM177550198
|
| 035 |
|
|
|a (NLM)18267676
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Kanai, H
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Microdefocusing method for measuring acoustic properties using acoustic microscope
|
| 264 |
|
1 |
|c 1992
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
|
| 338 |
|
|
|a Band
|b nc
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 02.10.2012
|
| 500 |
|
|
|a Date Revised 12.02.2008
|
| 500 |
|
|
|a published: Print
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a Many papers have been reporting on measuring acoustic properties of materials by acoustic microscopy. In a conventional method of V (z) curve analysis, the phase velocity and the propagation attenuation of a leaky surface acoustic wave (LSAW) are determined from the interference period Deltaz and the slope of the V(z) curve, respectively. For this method it is necessary to measure the V(z) curve for a period several times as long as the interference period Deltaz. Therefore, it is difficult to measure the acoustic properties of a sample with high resolution by the method. In order to overcome these problems, a method called the microdefocusing method is proposed. The method determines the acoustic properties of a sample by analyzing V (z) values measured in the microdefocusing region within an interference period Deltaz near a focal plane. An ultrasonic transducer called the butterfly transducer is proposed to be applied to this microdefocusing method and a digital signal processing procedure is developed to analyze the output of the ultrasonic transducer. Basic experiments are performed to confirm the principles of the new method
|
| 650 |
|
4 |
|a Journal Article
|
| 700 |
1 |
|
|a Chubachi, N
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Sannomiya, T
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 39(1992), 5 vom: 28., Seite 643-52
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
|
| 773 |
1 |
8 |
|g volume:39
|g year:1992
|g number:5
|g day:28
|g pages:643-52
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_22
|
| 912 |
|
|
|a GBV_ILN_24
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 39
|j 1992
|e 5
|b 28
|h 643-52
|