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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
... with an overview of ultrasonic flaw detectors, ultrasonic transducers, and search units and couplants. It then discusses the principles of operation, presentation, and interpretation of data of pulse echo and transmission methods. This is followed by sections providing information on general characteristics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110067
EISBN: 978-1-62708-247-1
.... Summary Current Challenges and New Developments Complementary Nondestructive Techniques Types of Reflected Signal Analysis Modes Polarity Analysis of Reflected Signals Time of Flight Imaging Using Reflected Signals Resolution and Sensitivity of SAM Inspection Transducer Selection...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870333
EISBN: 978-1-62708-314-0
...Summary of bond testing techniques Table 12.1 Summary of bond testing techniques Resonance method Transducer is driven at the resonance frequency (25–500 kHz), causing electrical impedance changes to detect unbonds or delaminations. Test requires a couplant and a variety of different...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720345
EISBN: 978-1-62708-305-8
... of ultrasonics on tubular products was made practical by the development of angle beam shear wave testing, immersion testing, and focused transducers. As with the eddy current and flux leakage methods, ultrasonic inspection can be applied either to the entire tube or to the weld only. Ultrasonic inspection...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... the instrument has sufficient sensitivity and resolution. A 5 or 10 MHz dual element transducer is normally used in this application. If the weld cannot be machined, near surface sensitivity will be low because the initial pulse is excessively broadened by the rough, as-welded surface. Unmachined welds can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500301
EISBN: 978-1-62708-317-1
..., the integration of sensors and monitoring techniques in modern production represents a cost-effective investment to maintain part quality and production rate and to reduce scrap and downtime. A load cell is a force transducer that converts force into an electric signal. Although there are different types...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870201
EISBN: 978-1-62708-314-0
... where: To investigate the potential pressure gradients that can exist within a laminate during curing, miniature pressure transducers capable of measuring the hydrostatic resin pressure were embedded at multiple locations within laminates to study the effects of vertical and horizontal pressure...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720365
EISBN: 978-1-62708-305-8
... orientation versus radial orientation. (a) Discontinuity normal to sound energy, almost total reflection of energy back toward transducer. (b) Discontinuity at 0° with respect to 45° sound energy path, almost no energy reflected back toward transducer. Source: Ref 1 There are, however, some definite...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780147
EISBN: 978-1-62708-268-6
... increase the pressure up to 3500 psi. Suppose further that the system requires pressure transducers to monitor system pressure and record any transients. If the engineers specify pressure transducers capable of withstanding 3000 psi with a very long sampling interval, the transducers will most likely miss...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110563
EISBN: 978-1-62708-247-1
.../NEMS using Raman Spectroscopy ”, 3rd IEEE Int'l Conf. on Nano/Micro Engineered and Molecular Ssytems , Sanya, China , 2008 , pp. 842 - 46 . 10.1109/NEMS.2008.4484455 [25] Khuri-Yakub B.T. , Percin G. , Micromachined Ultrasonic Transducers , Springer ( New York , 2005 ). [26...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110550
EISBN: 978-1-62708-247-1
.... Scanning acoustic microscopy (SAM) allows non-destructive imaging of certain defect types hidden below the top surface, including the delamination of interfaces, cracks, and voids [14] . An ultrasonic wave transducer is scanned horizontally above the surface and the reflected wave amplitude and polarity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820203
EISBN: 978-1-62708-339-3
..., it does not provide any indication of corrosion rates. Ultrasonic thickness measurements can be used to monitor corrosion rates in situ. Ultrasonic thickness measurements involve placement of a transducer against the exterior of the vessel in question. The transducer produces an ultrasonic signal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030360
EISBN: 978-1-62708-282-2
... Inspection System Electronic Magnetic Transducer Time-of-Flight Diffraction Conventional Radiographic Inspection Recent Developments in Radiography Dye Penetrant Inspection Magnetic Particle Inspection Eddy-Current Inspection Acoustic Emission Inspection Magnetic Flux Leakage...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... and subsurface flaws. A transducer probe is placed against a test piece, with a coupling liquid used to provide a suitable sound path between transducer and test surface to increase the transmission of the ultrasonic pulse energy into the test piece. This is done to avoid having a layer of air between the probe...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110025
EISBN: 978-1-62708-247-1
... through a transducer into the device under test top surface that travels through the individual material layers [14] . Each material interface interaction leads to a partial or total wave reflection that is measured by the transducer based on differences in acoustic impedances. This procedure is done...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700225
EISBN: 978-1-62708-279-2
...: Bead penetration varies with the changes in the value of the binder force in real time. Active drawbead: Bead penetration is controlled by a force transducer that is built into the draw radius of the lower binder. Fig. 15.7 Sketch of an active drawbead tooling. Active drawbeads add...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910475
EISBN: 978-1-62708-250-1
... (120 °F) B.8 Acoustic emission Detection by multiple transducers of acoustic signals emitted by growing cracks Incidence and location of growing cracks (particularly in pressure vessels undergoing proof testing) May be applied to large structures/ plant, intermittently or continuously...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... detector is converted into ultrasonic energy by a piezoelectric transducer element in the search unit. The beam pattern from the search unit is determined by the operating frequency and size of the transducer element. Ultrasonic energy travels through the material at a specific velocity that is dependent...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720117
EISBN: 978-1-62708-305-8
... maximum flexibility in data gathering with a minimal amount of time required for reducing data when conducting standard experiments. Current testing machines use strain gaged load cells and pressure transducers. In a load cell, strain gages are mounted on precision machined alloy steel elements...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220143
EISBN: 978-1-62708-341-6