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low-frequency vibration method

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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
...-ultrasonics, radiography, X-ray computed tomography, thermography, low-frequency vibration methods, acoustic emission, eddy current testing, optical holography, and shearography. The article presents some examples are for fiber-reinforced polymer-matrix composites. Many of the techniques have general...
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
..., electromagnetic acoustic transducer, radiography, thermography, and low-frequency vibration methods. The article also provides information on NDE methods commonly used for metal-matrix composites. acoustic emission computed tomography digital radiography eddy-current electromagnetic acoustic transducer...
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
.... At equal vibration amplitudes, crack heating is roughly proportional to frequency ( Ref 10 ). More cycles generate proportionally more heat, so even at low frequency (e.g., 20 kHz) excitation, higher harmonics and multiples of subharmonics with lower vibration amplitudes can dominate vibrothermographic...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001469
EISBN: 978-1-62708-173-3
... technique. In this welding process, the sonotrode delivers low-amplitude (15 to 60 μm), high-frequency sinusoidal vibration in a direction perpendicular to the bond line. Although ultrasonic welding machine frequencies range from 10 to 50 kHz, the commonly available devices apply frequencies...
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
... predict the low-frequency components, and it was suggested to use the model for vibration suppression of the hybrid system during engine start and stop. Mabrouk et al. ( Ref 3 ) conducted dynamic analysis on a Darrieus turbine to understand the relation between rotational speed, output power, and bearing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
... (ASTM) standards for the evaluation of erosion and cavitation: G 32 ( Ref 54 ), which is a vibratory test method using either a magnetostrictive or piezoelectric device that vibrates at a frequency of 20 kHz, and G 73 ( Ref 55 ), which is much broader in scope than G 32. Both of these standards include...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
....” This cleaning method uses the vibration-under-compression theory, which is generally applicable for all castings, yet is somewhat slow. Fig. 2 Vertical core knockout machine The advantages of vertical core knockout tools include: Low cost Flexibility (can be effectively used on castings...
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
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... equipment and also in computer connections. In some countries, aluminum conductors are used in domestic electrical circuits. Here, the movement is due to temperature variations and is, therefore, of extremely low-cycle frequency. However, the buildup of aluminum oxide in connections can cause the formation...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001736
EISBN: 978-1-62708-178-8
..., N=N, C–S, S–S, and S–H. However, functional group information is not the only type of vibrational information present in a Raman spectrum. Raman spectra of solids and crystals also contain contributions from lattice vibrations at low frequencies. These vibrations are due to the vibration...
Book Chapter

Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006685
EISBN: 978-1-62708-213-6
... information is not the only type of vibrational information present in a Raman spectrum. Raman spectra of solids and crystals also contain contributions from lattice vibrations at low frequencies. These vibrations are due to the vibration of the molecules around their centers of mass or the restricted...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002159
EISBN: 978-1-62708-188-7
... commonly made of type 304 stainless steel for durability. For low-volume production, brass can be used. Brass is easier to shape than stainless steel, but is less wear resistant. Tools are attached to the horn by one of two methods. If the tool is small, it can be machined from, or soldered to, a round...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005607
EISBN: 978-1-62708-174-0
... panels. Foil in the range of 0.004 to 0.12 mm (0.0002 to 0.004 in.) thickness is weldable with the high-frequency (typically 50 kHz), low-power systems. There are 20 kHz systems available for welding heavier materials, including passive solar panels up to approximately 0.2 mm (0.008 in.) thick...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003315
EISBN: 978-1-62708-176-4
... test machine, to provide static mean loading or superposition of large-amplitude low-frequency cycling on top of the high-frequency cycling ( Ref 18 , 32 ). The external load frame is attached to the wave train at the displacement nodes on acoustic horns on either side of the specimen, as shown...
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
... technique is widely applied to detect cracks, surface defects, corrosion, and leakage by using various types of tools, such as low-power microscopes and stroboscopes. The main advantages of this method are the immediate condition assessment and the low-level inspection skills. However, the problem...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003669
EISBN: 978-1-62708-182-5
.... This is accomplished using either a magnetostrictive or piezoelectric transducer driven by an electronic oscillator or amplifier. The transducer vibrates at a frequency of 20 kHz. The apparatus must include some method of measuring the displacement amplitude of the transducer as well as a means of maintaining...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006430
EISBN: 978-1-62708-192-4
.... In general, the torque ripple should not exceed 1% of the total torque of the machine and the frequency should be relatively low. Bearing Fault Detection The detection of faults using ESA requires knowledge of the speed of each shaft associated with the equipment. With this information you can detect...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005840
EISBN: 978-1-62708-167-2
... winding must be attached, contained, or supported in a method to secure it and prevent it from moving. In very-low-frequency applications, the coil winding actually is compressed between the two end plates of the coil to prevent it from moving and vibrating ( Fig. 12 , 13 ). If the coil winding...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006662
EISBN: 978-1-62708-213-6
... ATR spectra. Sensitivity improvements in FTIR spectrophotometers over the years have enabled ATR spectra to be measured with single-bounce accessories. This makes sample preparation much easier, and many low-cost FTIR instruments now are typically fitted with such single-bounce accessories...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006470
EISBN: 978-1-62708-190-0
...Abstract Abstract Ultrasonic inspection is a family of nondestructive methods in which beams of high-frequency mechanical waves are introduced into materials, using transducers, for the detection and characterization of both surface and subsurface anomalies and flaws in the material...