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piezoelectric transducer

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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006471
EISBN: 978-1-62708-190-0
...Abstract Abstract This article discusses the advantages, disadvantages, applications, and selection criteria of various technologies and transduction modalities that can generate and detect ultrasonic waves. These include piezoelectric transducers, electromagnetic acoustic transducers (EMATs...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006461
EISBN: 978-1-62708-190-0
...Abstract Abstract This article provides an overview of the characteristics of Rayleigh waves plus methods for generation and detection of waves, including using piezoelectric transducers or noncontact techniques such as lasers, electromagnetic acoustic transducers, or air-coupled ultrasonics...
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Published: 01 August 2018
Fig. 3 Guided wave transducer ring showing two rows of piezoelectric elements. Source: Ref 1 More
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Published: 01 January 1989
Fig. 1 Typical plate transducer consisting of four piezoelectric quartz crystal sensors More
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001226
EISBN: 978-1-62708-170-2
... and the equipment in ultrasonic cleaning. The components used in the generation of ultrasonic wave include piezoelectric and magnetostrictive transducers that are used in ultrasonic generators and tanks. The effects of solution type and its temperature on the effectiveness of ultrasonic cleaning are also discussed...
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Published: 01 August 2018
Fig. 4 Effect of penetrating laser light: generation occurs perpendicularly as if a conventional piezoelectric transducer was moved over the surface More
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Published: 01 August 2018
Fig. 2 Schematic showing principal components of a scanning laser acoustic microscope. The unit employs a plane-wave piezoelectric transducer to generate the ultrasound, and a focused laser beam as a point source detector of the ultrasonic signal. Acoustic images are produced at a rate of 30 More
Image
Published: 01 August 2018
Fig. 5 Structure of a piezoelectric-based longitudinal (compression) wave transducer. Courtesy of Iowa State University Center for Nondestructive Evaluation More
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003236
EISBN: 978-1-62708-199-3
... inspection are also addressed. The article concludes with a review of the advantages and disadvantages of ultrasonic inspection compared with other methods applications of the technique. couplants flaw detection nondestructive testing piezoelectric transducer elements pulse-echo method...
Image
Published: 01 August 2018
Fig. 1 (a) The principle of laser-ultrasonics or of a “laser-ultrasonic transducer” compared to (b) conventional piezoelectric-based ultrasonics More
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006441
EISBN: 978-1-62708-190-0
... the full cross section is needed to obtain sensitivity to defects at all circumferential locations and at both inner and outer surfaces of the pipe wall. Figure 3 shows a transducer that was developed to achieve these objectives. It consists of two rings of piezoelectric transducer elements ( Ref 10...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006446
EISBN: 978-1-62708-190-0
... of the nonlinearity parameter requires absolute calibration of the receiving transducer so U 1 and U 2 can be accurately measured ( Ref 21 ). Capacitive laser interferometric receivers can be used to measure absolute displacement amplitude. Alternatively, piezoelectric transducers can be used after absolute...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009152
EISBN: 978-1-62708-186-3
...Abstract Abstract This article discusses the installation of the most commonly used force-monitoring devices, namely, load cells and piezoelectric force sensors. It describes the purpose and operation of commonly used displacement sensors, such as linear variable differential transformers...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006469
EISBN: 978-1-62708-190-0
... methods used for ultrasonic inspection, which were and continue to be implemented most commonly using single piezoelectric element transducers: These are the pulse-echo and the transmission methods. The fundamental difference between these two methods is that the transmission method uses two transducers...
Book Chapter

Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006474
EISBN: 978-1-62708-190-0
... ultrasonic transducer (in some cases more than 20 cm, or 8 in., in diameter) to generate plane waves, which provide the ultrasonic illumination, and then uses liquid-surface holography, through the interaction with a beam from a reference transducer, to convert the sonic image into a wave pattern...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
... revolution. Laser-ultrasonics is a particular implementation of ultrasonic nondestructive inspection in which ultrasound is generated and detected by lasers. The piezoelectric transducer widely used in the usual or conventional inspection by ultrasound is replaced by a laser and optical system. Because...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... very high sensitivity. Air-coupled UT can be performed with piezoelectric transducers or with microelectromechanical (MEM) transducers ( Ref 10 , 11 , 12 , 13 ). The MEM transducers typically exhibit a significantly lower acoustic impedance than piezoelectric transducers and so provide a better...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002149
EISBN: 978-1-62708-188-7
..., feed force, and torque. Measuring Plate Transducers The sensors in this device are integrated into a plate ( Fig. 1 ) that is then mounted between the turret and the carriage. The actual sensing element is a piezoelectric quartz crystal, which is very durable and capable of accurately measuring...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003436
EISBN: 978-1-62708-195-5
... for the ultrasonic transducers and electronics to have very high sensitivity. Air-coupled UT can be performed with piezoelectric transducers or with microelectromechanical (MEM) transducers ( Ref 10 , 11 , 12 , and 13 ). The MEM transducers typically exhibit a significantly lower acoustic impedance than...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003658
EISBN: 978-1-62708-182-5
... phenomena, array pattern dropouts or blind spots, and operator training and interpretation. Principles of Operation Most GW ultrasonic sensors are piezoelectric transducers in either crystalline or piezo-composite format. Guided wave transducers are driven by high- voltage (on the order of 1000 V...