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231222s2001 xx ||||| 00| ||eng c |
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|a pubmed25n0376.xml
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|a (DE-627)NLM112737994
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|a (NLM)11367809
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Wang, H
|e verfasserin
|4 aut
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|a High frequency properties of passive materials for ultrasonic transducers
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|c 2001
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 07.06.2001
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|a Date Revised 15.09.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a The acoustic properties of passive materials for ultrasonic transducers have been measured at room temperature in the frequency range from 25 to 65 MHz using ultrasonic spectroscopy. These materials include alumina/EPO-TEK 301 composites and tungsten/EPO-TEK 301 composites. Experimental results showed that the acoustic impedance of the composites monotonically increased with the volume fraction of the particle filler, which is in agreement with the Denavey model. The attenuation, however, peaked between 7 and 9% volume fraction of particle filler. For comparison, several other passive materials were also fabricated and measured. The results suggest that materials that possess a higher attenuation also appear to have a larger velocity dispersion
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Research Support, U.S. Gov't, P.H.S.
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|a Epoxy Compounds
|2 NLM
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|a Aluminum Oxide
|2 NLM
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| 650 |
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|a LMI26O6933
|2 NLM
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|a Tungsten
|2 NLM
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|a V9306CXO6G
|2 NLM
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| 700 |
1 |
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|a Ritter, T
|e verfasserin
|4 aut
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|a Cao, W
|e verfasserin
|4 aut
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|a Shung, K K
|e verfasserin
|4 aut
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|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 48(2001), 1 vom: 29. Jan., Seite 78-84
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnas
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| 773 |
1 |
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|g volume:48
|g year:2001
|g number:1
|g day:29
|g month:01
|g pages:78-84
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|d 48
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|b 29
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|h 78-84
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