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piezoelectric transducers

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720267
EISBN: 978-1-62708-305-8
... MHz. Short shock bursts of ultrasonic energy are aimed into the material from the ultrasonic search unit of the ultrasonic flaw detector instrument. The electrical pulse from the flaw detector is converted into ultrasonic energy by a piezoelectric transducer element in the search unit. The beam...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500301
EISBN: 978-1-62708-317-1
... and piezoelectric force sensors are the most commonly used force-monitoring devices. Load Cells A load cell is a force transducer that converts force into an electric signal. Although there are different types of load cells, strain-gage-based load cells ( Fig. 15.1 ) are the most commonly used type. Strain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870333
EISBN: 978-1-62708-314-0
... to a piezoelectric crystal in the transducer, causing the crystal to vibrate and convert the electrical pulses into mechanical vibrations (sound waves). The piezoelectric crystal will also convert the returning sound waves back into electrical energy when the sound is received from the part. A single crystal can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110067
EISBN: 978-1-62708-247-1
... that is typically perpendicular to the incident sound beam. The C-scan image can be formed by mechanically scanning a piezoelectric transducer above the specimen and electronically gating the signal in time. The broad-band transducer commonly employed contains a lens designed for focusing the acoustic waves. C-scan...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930085
EISBN: 978-1-62708-359-1
... from 20 to 1200 kHz and are picked up with piezoelectric transducers fixed to the structure in arrays that are from 1 to 6 m (3.3 to 19.7 ft) apart. The emissions generally occur in bursts and are of very low amplitude. The instruments are able to amplify the signals and filter out the high levels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110485
EISBN: 978-1-62708-247-1
... mode, the probe is set into mechanical oscillation by applying an AC signal to a piezoelectric transducer affixed to the probe holder. This causes the cantilever to oscillate mechanically in the z direction. The frequency of oscillation is chosen to be at or near the probe’s natural resonant frequency...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... energy are aimed into the material from the ultrasonic search unit of the ultrasonic flaw detector instrument. The electrical pulse from the flaw detector is converted into ultrasonic energy by a piezoelectric transducer element in the search unit. The beam pattern from the search unit is determined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110563
EISBN: 978-1-62708-247-1
.... (AFM is the key tool in measuring surface roughness at this scale.) Figure 22a shows a cross section of a CMUT (capacitive micromachined ultrasonic transducer) which transmits and receives ultrasound signals. Its functionality is identical to a MEMS microphone but in the ultrasonic range and powerful...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.htpa.t53310167
EISBN: 978-1-62708-346-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.htpa.9781627083461
EISBN: 978-1-62708-346-1
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290261
EISBN: 978-1-62708-319-5
.... A device for measuring the theoretical density of a loose powder or preform. Helium and granular uids are commonly employed to encase the powder or component for determination of true volume; when coupled with an independent mass, determination leads to a density. PZT. Piezoelectric ceramic based...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.9781627083195
EISBN: 978-1-62708-319-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440189
EISBN: 978-1-62708-352-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860515
EISBN: 978-1-62708-348-5
... areas with large temperature gradients, and (c) interfacing low-voltage signals with ambient temperature junctions and switches so that spurious voltages are minimized. 14.2.1 Transducer-Specimen Contact Perhaps the most difficult instrumentation problem in cryogenic measurement systems...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300079
EISBN: 978-1-62708-323-2
.... These bubble collapse jets can produce contact stresses that can be near or above the yield strength of the surface ( Fig. 4.9 ). Fig. 4.9 Collapse of bubbles to create a cavitation jet The energetic action of bubble collapse is used to advantage in ultrasonic cleaning devices. A piezoelectric...
Book Chapter

By A. F. Clark
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860075
EISBN: 978-1-62708-348-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860203
EISBN: 978-1-62708-348-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.9781627083485
EISBN: 978-1-62708-348-5
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.9781627083232
EISBN: 978-1-62708-323-2