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ultrasonic thickness

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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
... Abstract Ultrasonic inspection is a nondestructive method in which beams of high frequency acoustic energy are introduced into a material to detect surface and subsurface flaws, to measure the thickness of the material, and to measure the distance to a flaw. This chapter begins with an overview...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720345
EISBN: 978-1-62708-305-8
... the magnetic flux leakage technique) and by ultrasonic techniques. In general, the eddy current and magnetic flux leakage techniques are applied to products not exceeding 1020 mm (40 in.) in diameter or 19 mm (¾ in.) in wall thickness. On the other hand, ultrasonic inspection is used on tubes ranging...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... power, which allows the examination of extremely thick sections Accuracy in measuring of flaw position and estimating defect size Ultrasonic tests have the following limitations: Size-contour complexity and unfavorable discontinuity orientation can pose problems in interpreting the echo...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... foreign material, such as loose scale, flux, or weld spatter, may interfere with the interpretation of results. Ultrasonic inspection is capable of detecting subsurface porosity. However, it is not extensively used for this purpose except to inspect thick sections or inaccessible areas where...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... measure the thickness of the material, and to measure the distance to a flaw. An ultrasonic beam travels through a material until it strikes an interface or discontinuity such as a flaw. Interfaces and flaws interrupt the beam and reflect a portion of the incident acoustic energy. The amount of energy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740213
EISBN: 978-1-62708-308-9
... processes such as electrical discharge, abrasive jet, and hydrodynamic machining, laser and electron beam machining, ultrasonic impact grinding, and electrical discharge wire cutting. chip formation cutting fluids cutting tools machinability machining tool wear MACHINING COVERS a large...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870333
EISBN: 978-1-62708-314-0
... the pulse is related to the depth of the defect. Pulse echo ultrasonics detects almost all types of foreign objects, but it cannot determine porosity levels as thoroughly as through transmission. If appropriate reference standards are available, pulse echo can be used to measure laminate thickness and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
... nondestructive testing methods Method Characteristics detected Advantages Limitations Example of use Ultrasonics Changes in acoustic impedance caused by cracks, nonbonds, inclusions, or interfaces Can penetrate thick materials; excellent for crack detection; can be automated Normally requires...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090359
EISBN: 978-1-62708-266-2
... assurance that state-of-the-art examinations were sufficient to detect cracking in BWR thick-wall recirculation piping welds Determine the generic significance of the Nine Mile Point Unit 1 piping degradation A qualification test of ultrasonic methodology was outlined in the IE Bulletin. Plant...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290137
EISBN: 978-1-62708-306-5
... (usually ≤1 s) is selected according to the thickness and hardness of the materials being joined. For seam welding, the tip is a roller disk that rotates across the parts to be joined. Fig. 6.24 Two versions of ultrasonic welding systems used for spot welding applications: (a) wedge-reed system and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500301
EISBN: 978-1-62708-317-1
... equipment from overloads due to tool wear, friction, and misfeeds, how displacement and proximity sensors help to prevent die crashes, how acoustic emission, ultrasonic, and eddy current sensors detect tool breakage and part defects such as cracks, and how roller ball and optical sensors measure material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... green compacts by ultrasonic techniques appears to be hindered by problems of extreme attenuation of the incident signal. In one case, signals of 1 to 20 MHz were transmitted through an 8 mm (0.3 in.) thick compact of atomized iron with 0.2% graphite added. Attenuation did not allow back-wall echo...
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
... these flaws include visual, magnetic particle, liquid penetrant, ultrasonic, eddy current, and radiographic inspection. This chapter provides a detailed discussion on the characteristics, process steps, applications, advantages, and limitations of these methods. It also describes the flaws caused by the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430409
EISBN: 978-1-62708-253-2
... of material data from the samples removed from the component (destructive testing). A wide range of destructive and nondestructive tests are performed during RLA. The various tests include ultrasonic testing for thickness and oxide scales, radiography, magnetic particle inspection, dye penetrant...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... Not constant Not in the model Material Complex Simple models Source: Ref 3.1 Fig. 3.24 Comparison of thickness profile using mechanical indicator and ultrasonic test equipment with finite-element output results (punch stroke = 34.3 mm, or 1.35 in.). Source: Ref 3.20 Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350195
EISBN: 978-1-62708-315-7
... operations may be required before or after processing and how to estimate or predict coating thickness, case depth, hardness, and the likelihood of distortion. It also addresses related issues and considerations such as part handling and fixturing, surface preparation and cleaning requirements...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780141
EISBN: 978-1-62708-268-6
... each cycle to maintain the required depth. The failure analysis team peered into the solvent reservoir and observed that the solvent was a thick, dark liquid. Fresh solvent is clear. The failure analysis team asked for the ultrasonic cleaner operating manual, which the operator did not have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... Tubing cracks (nonferrous) Eddy current Recommended if tube diameter is less than 1 in. and wall thickness is less than 0.15 in. Ultrasonic testing Suitable for tubing; couplants may affect certain alloys Hydrogen flake (ferrous) Ultrasonic testing Extensively used Magnetic particle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270173
EISBN: 978-1-62708-301-0
.... compressor disc fatigue failure visual examination A fourth-stage disc in the LP compressor of an aircraft engine was found cracked. There were actually two cracks, one originating from the front side and the other from the rear side, propagating through the thickness. Fluctuating loads of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030360
EISBN: 978-1-62708-282-2
... guidelines regarding their application ( Ref 12 – 15 ). A wide variety of techniques ranging from simple visual inspections through well-established methods such as radiography and ultrasonic testing to new and highly specialized methods are available for use. Some are identified subsequently. Not all...