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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006458
EISBN: 978-1-62708-190-0
... Abstract This article describes the basic features of electromagnetic acoustic transducers (EMATs) and discusses their existing and some potential uses within the field of ultrasonic nondestructive evaluation (UNDE). It provides sufficient basic and practical information to make an informed...
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 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), laser...
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Published: 01 January 2000
Fig. 58 Measurement resolution using transducers with full-scale ranges of 68 and 9 N · m More
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Published: 01 January 1989
Fig. 5 Multispindle bearing transducers positioned on two adjacent machine spindle shafts More
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Published: 01 December 1998
Fig. 3 Oscilloscope displays using ultrasonic transducers of (a) high and low penetration (ability to detect defects at distances within the solid), and (b) high and low resolution (ability to separate echoes from closely-spaced defects) More
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Published: 01 January 2001
Fig. 4 Typical arrangements for measuring heat flow with heat-flux transducers under the ASTM C 518 method More
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Published: 01 August 2018
Fig. 6 Examples of commercially available transducers: contact, immersion and focused, shear wave (on wedge), two-connector dual element, and compression wave on buffer rod. 1: Compression wave contact transducers. 2: Shear wave transducers. 3: Compression wave immersion transducers. 4 More
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Published: 01 August 2018
Fig. 4 Schematics of electromagnetic acoustic transducers. (a) Arrangement for the production of shear waves. (b) Arrangement for the production of compressional waves More
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Published: 01 August 2018
Fig. 9 Wedge-based ultrasonic transducers. (a) Illustration of wave mode conversion to generate shear waves. (b) Examples of angle beam transducers. Courtesy of Iowa State University Center for Nondestructive Evaluation More
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Published: 01 August 2018
Fig. 11 (a) Examples of immersion transducers. Courtesy of Iowa State University Center for Nondestructive Evaluation. (b) Illustrations of focal geometry: cylindrical focus (left) and spherical focus (right) More
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Published: 01 August 2018
Fig. 4 Coils that may be used in electromagnetic acoustic transducers (EMATs) to generate different types of elastic waves. (a) Spiral coil that is sometimes used for thickness gaging because it has a relatively low insertion loss (however, there are even better coil designs for thickness More
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Published: 01 August 2018
Fig. 3 (a) Commercial wedge transducers for generating Rayleigh waves. Source: Ref 23 . (b) Setup for using a mediator wedge to transmit Raleigh waves into the sample. Source: Ref 2 More
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Published: 15 June 2020
Fig. 2 Variety of transducers fabricated by fused deposition of ceramics (FDC): (a) 10-by-10 tube array, (b) bellows, (c) spiral, (d) curved transducer, (e) telescoping, and (f) radial actuators. Source: Ref 67 . Reprinted with permission from Elsevier More
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
... Abstract This article considers the two primary methods used for ultrasonic inspection: pulse-echo and the transmission methods. Pulse-echo inspection can be accomplished with longitudinal, shear, surface (Rayleigh), or Lamb (plate) waves using a diverse range of transducers. The article...
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 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. It reviews...
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Published: 01 January 2000
Fig. 12 Bolt-on attachment of crack-opening displacement transducer to fatigue test specimen More
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Published: 01 January 2000
Fig. 14 Attachment of crack-opening displacement transducer to specimen by machined knife-edge contacts More
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Published: 01 January 1996
Fig. 12 Bolt-on attachment of crack-opening displacement transducer to fatigue test specimen More
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Published: 01 January 1996
Fig. 14 Attachment of crack-opening displacement transducer to specimen by machined knife-edge contacts More
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Published: 01 January 1989
Fig. 1 Typical plate transducer consisting of four piezoelectric quartz crystal sensors More