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sound-emission measurement

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500301
EISBN: 978-1-62708-317-1
..., 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 flow. It also discusses the role of draw-in, wrinkle, oil-monitoring, and vision sensors and explains how material properties can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220143
EISBN: 978-1-62708-341-6
... surface condition, contact resistance, and response time for thermocouples. With radiation devices, emissivity variations are the major case of concern. Thermocouples Although thermocouples are not suitable for all applications, they provide good accuracy, measurement capability over a very broad...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930085
EISBN: 978-1-62708-359-1
... destructive proof tests, are that a 100% inspection can be performed at manufacture and that monitoring of the structure or component can continue while it is in service. The principal disadvantage of NDE is that the measurements obtained are only indirectly related to the presence and severity of the flaws...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110563
EISBN: 978-1-62708-247-1
... to the pad on the right. Pressure Sensors Pressure sensors are very similar in operation to microphones, but they do not measure variations in pressure that change as fast as sound waves; their structures are therefore far simpler than microphones. The pressure sensor is a sealed cavity with two...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110180
EISBN: 978-1-62708-247-1
... kinetic energy in electrical fields and scatter accompanied by light emission of a broad spectrum. The typical CMOS logic sends no PE signal in static mode. Switching inverters emit light, so dynamic measurements in picosecond resolution are used for circuit and delay analysis. Failing FETs and circuit...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430107
EISBN: 978-1-62708-253-2
... Abstract This chapter describes some of the most effective tools for investigating boiler tube failures, including scanning electron microscopy, optical emission spectroscopy, atomic absorption spectroscopy, x-ray fluorescence spectroscopy, x-ray diffraction, and x-ray photoelectron...
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
... to fall outside the preset tolerance limits, can be greatly reduced by good molding and core-making practices. Because the dimensions and weight of iron castings are directly related to their soundness and are dependent on mold rigidity, the measurement of size or weight provides a simple test...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030360
EISBN: 978-1-62708-282-2
..., radiographs, measurements, and live monitoring data. To turn inspection data into meaningful knowledge regarding fitness for service requires further data in terms of design, operation, construction, process, chemistry, maintenance records, and so forth. The requirements for handling such quantities of data...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... Abstract Fabricated powder metallurgy (P/M) parts are evaluated and tested at several stages during manufacturing for part acceptance and process control. The various types of tests included are dimensional evaluation, density measurements, hardness testing, mechanical testing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110153
EISBN: 978-1-62708-247-1
... with measurement capabilities analogous to the evolution of photon emission tools with thermal and laser capabilities. Options on a pocket milling machine can now incorporate a dual band interferometer, microscope, multiple view and alignment cameras for target and machine vision monitoring with overlay for X-ray...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260029
EISBN: 978-1-62708-336-2
... of multiwavelength infrared thermometry for noncontact temperature measurement of aluminum extrusion. Glasman et al. ( Ref 22 ) also introduced a new optical pyrometer for measuring the temperature of aluminum alloys. They found the temperature measurement error under conditions of changing emissivity lies less than...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110513
EISBN: 978-1-62708-247-1
... needs to be considered in a modern car, where special attention needs to be given to the tire pressure measurement and other wireless data transmission lines – especially if so-called ISM frequencies (frequencies reserved without license for a wide range of I ndustrial, S cientific and M edical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610549
EISBN: 978-1-62708-303-4
... was low and/or if some measure of shock loading was involved. When dealing with failures of crankshafts or other shafts, it is generally desirable to ascertain the conditions of the bearings and whether any misalignment existed, either within the machine or between the driving and driven components...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910427
EISBN: 978-1-62708-250-1
... testing is shown graphically in Fig. 1 . The typical time allowed for testing of candidate materials to support a materials selection process is measured in weeks and months—a relatively short period of time. By contrast, the desired useful lives of different equipment varies from approximately 7 to 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820203
EISBN: 978-1-62708-339-3
.... The thickness is calculated by using the time that elapses between emission of the signal and its subsequent reception, along with the velocity of sound in the material. To obtain a corrosion rate, a series of measurements must be made over a time interval, and the metal loss per unit time must be determined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110010
EISBN: 978-1-62708-247-1
...-in thermography magnetic current imaging package failure analysis scanning acoustic microscopy time domain reflectometry X-ray inspection A systematic approach is needed to uncover the root cause of a modern package failure. Opens and shorts sound easy, when compared to functional or a leakage failure...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370145
EISBN: 978-1-62708-447-5
... on the volume of the output from each cell and the diversity of the alloys cast in the facilities and frequency of casting multiple alloys. The emission control systems required for reducing global warming and protecting the operator’s wellbeing impact capital outlay and operating expenses. The growing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930039
EISBN: 978-1-62708-359-1
... of the weld was measured using an emission spectrometer, and the results are given in Table 5 . The interstitial content of the weld is also of interest, and the levels of oxygen and nitrogen were measured with dedicated instruments. The oxygen level of the weld was found to be 110 ppm and the nitrogen level...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430409
EISBN: 978-1-62708-253-2
..., radiography, magnetic particle inspection, dye penetrant testing, in situ replication and metallography, eddy current testing, fibroscopy, acoustic emission, positive material identification, hardness and microhardness measurement, flattening testing, microstructural evaluation, and accelerated creep tests...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430149
EISBN: 978-1-62708-253-2
... (2.12 in.) OD and 4.0 mm (0.15) thickness. Investigation and Findings Visual examination of the tube displayed a rupture opening with fine tips. Bulging was noticed around the rupture contours. The ID surface had a scale, which was grayish black in color ( Fig. 6.8 ). The measurements across...