1-20 of 183 Search Results for

sound-emission measurement

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005935
EISBN: 978-1-62708-166-5
... of the phase transformation of steel and of the boiling process at the interface during the cooling process. The sound-pressure signal is captured by the hydrophone through sound-emission measurements that occur during steel quenching in different quenching media. The analysis of the results offers...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006368
EISBN: 978-1-62708-192-4
... signal and the amount of cutting tool wear. The first step in vibroacoustic analysis is to measure the sound and vibration signals, then process the data to unveil the hidden information about the system. Hosseini Fouladi et al. ( Ref 7 ) measured sound signals produced by the generator mounted...
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
... in friction properties, lubrication conditions, stick-slip phenomenon, and galling ( Ref 20 ). Fig. 16 Force and acoustic emission signals for a breaking punch. Source: Ref 2 Ultrasonic inspection is a method in which high-frequency sound waves are introduced into workpiece materials to detect...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006400
EISBN: 978-1-62708-192-4
... and artificial intelligence techniques. This technique uses human senses, including sight, touch, and sound, to assess the condition of a machine. The main advantage of this technique is the low cost of maintenance over breakdown maintenance, which varies from one application to another. The visual inspection...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.9781627081900
EISBN: 978-1-62708-190-0
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006477
EISBN: 978-1-62708-190-0
... with film and chemical disposal. However, one of the biggest drawbacks with the radiography method over other NDE methods is the requirement for accessibility to both surfaces of the material to be tested. The ultrasonic method uses high-frequency sound waves to locate and measure flaws in welds...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005616
EISBN: 978-1-62708-174-0
.... There are no environmental issues with film and chemical disposal. However, one of the biggest drawbacks with the radiography method over other NDE methods is the requirement for accessibility to both surfaces of the material to be tested. The ultrasonic method uses high-frequency sound waves to locate and measure...
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
...) will essentially block all sound from going any farther into the composite. Therefore, PE is usually limited to detection of the first occurring defect. By knowing the wave speed in the composite part, or through the use of reference standards, thickness or defect depth can be measured. Carbon/epoxy composite...
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
... 1.30 Graphite/epoxy 3.0 (a) 4.7 × 10 5 1.55 Aluminum 6.3 1.7 × 10 6 2.71 Titanium 6.1 2.7 × 10 6 4.60 (a) Sound beam normal to fiber orientations Acoustic wavelengths in materials Table 3 Acoustic wavelengths in materials Frequency Air Water Epoxy resin...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005578
EISBN: 978-1-62708-174-0
... of seconds. During this time, a seasoned operator is listening to the process. After many years of experience, a knowledgeable operator can distinguish a “good” from a “bad” weld based strictly on the sound produced. The terms good and bad are commonly used on the production floor by the operator...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001473
EISBN: 978-1-62708-173-3
... on propagating pulses of sound through a medium and then picking up reflected echoes. However, because the sound is of an ultrasonic frequency, the pulses are propagated along a narrow beam in a fixed direction, typically at refraction angles of 0, 45, 60, or 70° from the probe placed on the surface. To achieve...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005759
EISBN: 978-1-62708-171-9
... of unsafe and unhealthy conditions. Noise level is a measurement of sound wave energy (pressure). The standard unit of sound measurement is decibels (dB). The use of the decibel, a unit based on the logarithm of the sound intensity power, provides a scale that better represents how loud the sound...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006444
EISBN: 978-1-62708-190-0
... be measured using a microphone to detect sound emitted into the air (the direct sound must be blocked from the vibration source and fixturing). Note that sensors can have reduced sensitivity and even resonances at high frequencies, so stress levels potentially can be incorrectly evaluated. The laser...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003653
EISBN: 978-1-62708-182-5
... Expert System Abstract Abstract This article focuses on the methods that are being developed for detecting and monitoring corrosion: electrochemical methods, electromagnetic or sound wave methods, fiber-optic technology, fluorescence methods, and the Diffracto Sight method. It reviews...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001478
EISBN: 978-1-62708-173-3
... equipment are set during the engineering development phase, and then must be lowered, based on production expediency, rather than sound engineering judgment, when manufacturing cost and schedule commitments must be met. For a successful development program, team members must understand the activities...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
... of the various ultrasonic techniques being used to inspect bonded structures. In this technique, the ultrasonic beam is transmitted and received by a single search unit placed on one surface of the part ( Fig. 20a ). The sound is transmitted through the part, and reflections are obtained from voids...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005197
EISBN: 978-1-62708-187-0
... technology. Some other ideas have not proved to be technically sound or have lost appeal because of ever-changing economic conditions, industry needs, state and federal law changes, and a host of other reasons to abandon them by the melting community. Some of the more successful improvement technologies...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005340
EISBN: 978-1-62708-187-0
... pressure filter tests electric resistivity tests reduced-pressure test ultrasonic technique THE FUNCTIONALITY of aluminum alloy castings is strongly dependent on casting soundness. This implies that such castings be virtually free of hydrogen porosity and entrained nonmetallic inclusions. Negligence...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004215
EISBN: 978-1-62708-184-9
... be reviewed and amended as necessary to take account of any particular geometric or access factors specific to the component to be inspected. Ultrasonic (high-frequency sound) inspection is the workhorse of in-service NDE, being used to give measurements of remaining wall thickness at discrete test points...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005553
EISBN: 978-1-62708-174-0
.... Manz A.F. , Welding Arc Sounds , Weld. J. Vol 60 ( No. 5 ), May 1981 , p 23 90. Jolly W.D. , Acoustic Emission Exposes Cracks during Welding , Weld. J. , Vol 48 ( No. 1 ), Jan 1969 , p 21 – 27 91. Drouet M.G. and Nadeau E. , Pressure Waves Due...