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vibration-induced heating

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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
... Abstract Vibrothermography, also known as sonic thermography, sonic infrared (IR), thermosonics, and vibroacoustic thermography, is a nondestructive evaluation (NDE) technique for finding cracks and delaminations through vibration-induced heating. This article describes the four parts...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005619
EISBN: 978-1-62708-174-0
... of the ultrasonic welding with an emphasis on governing equations, material behavior, and heat generation of the process. It discusses the resulting factors, namely, vibration, friction, temperature, and plastic deformation as well as the bonding strength and its mechanism. bonding strength faying surface...
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
.... Laser Welding Limited information is available on laser welding. Carbon dioxide (CO 2 ) lasers induce excitation of the vibrational modes and, hence, heating of the irradiated organic material ( Ref 24 , 25 ). At low power input levels, satisfactory weld penetration can be achieved. The technique...
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
...-reed system and a lateral-drive system ( Fig. 1 , 2 ). In the wedge-reed system, the transducer is attached to a reed that vibrates in flexure and is terminated by a heat treated steel tapered tip that fits into a cavity at the end of the reed. The lateral-drive system is an inline transducer, booster...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003478
EISBN: 978-1-62708-195-5
... to keep the chips at a temperature at which they can properly operate. The thermal plane also must not expand too much under heat loads so that it does not induce loads that wear the joints that attach the chips to the electronic board. Therefore, the thermal plane material must have high thermal...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001384
EISBN: 978-1-62708-173-3
... in the ultrasonic bonding process. Control of Resonance Complex workpieces, especially those with multiple parts or thin wall sections, may be induced to vibrate by the ultrasonic welding system, which can produce fractures in the workpiece itself and in previously made welds or can cause inconsistent weld...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003021
EISBN: 978-1-62708-200-6
.... Friction Welding Frictional heating is important in the ultrasonic, vibration, and spin welding methods. In ultrasonic welding, heat generation depends on the storage and loss moduli of the polymer. In the cases of vibration and spin welding, heat generation depends on the frictional coefficient...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... to a reduction in flexibility at this point, and, in the case of a mining rope, can cause jolting when this part of the cable passes onto the winding drum. In steam generators and heat exchangers, flow-induced vibration results in fretting between the tubes and the supports or baffles through which they pass...
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
... to an ultrasonic generator transferred the force to the workpiece. They showed that ultrasonic-induced vibrations have a positive impact on material flow during friction stir welding; the material refilling to the advancing side was enhanced, and fewer defects were observed in the welds. Therefore, the mechanical...
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
... iron castings. In gray iron, relatively low-energy shaking, vibrating, tumbling, and/or shotblasting is used to force loose core sand out through the casting openings. Core sand in ferrous castings has much less strength because the ambient heat of the metal, as it solidifies in the mold, burns...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001338
EISBN: 978-1-62708-173-3
... constant as it travels (if the heat input and section geometry are constant). Sixth, because of the stirring action of the arc and the action of Marongoni surface tension gradient induced convection forces, there is good mixing of the molten weld pool. In contrast, there is comparatively little mixing...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006352
EISBN: 978-1-62708-179-5
... nodularity TK boiling temperature NVH noise, vibration, and harshness TS tensile strength OEM original equipment manufacturer TRIP transformation-induced plasticity OFW oxyfuel (gas) welding TTT time-temperature-transformation OXF oxidation factor TV thickness variation p phase TWGCI thin-wall gray cast iron...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005251
EISBN: 978-1-62708-187-0
... silicate-carbon dioxide systems, and phosphate-bonded molds. Organically bonded systems include no-bake binders, heat-cured binders, and cold box binders. However, some molding processes do not use binders. Instead, the sand or mold aggregates are held together during pouring by the pattern itself...
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
... excessive heating. Also, the role of the temporal profile of the generation laser does not alter the maximum temperature or displacement—so how important is the shape of the laser pulse? To address these issues, the complete wave equation must be modeled along with the laser-induced temperature rise...
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
.... bars billets brazing electrical insulation induction coils induction heating preventive maintenance refractory selection slabs vibration method wear INDUCTION HEATING has been used for many applications in which metallic parts are heated to elevated temperatures. The heating of billets...
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
... of interest. Information on molecular vibrations can provide much structural, orientational, and chemical information that can assist in defining the environment of the molecule of interest to a high degree of specificity. The materials applications for which Raman spectroscopy can be used continue to expand...
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
... and of surface and near-surface species. Raman spectroscopy Overview Introduction Raman spectroscopy is a valuable tool for the characterization of materials due to its extreme sensitivity to the molecular environment of the species of interest. Information on molecular vibrations can provide...
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
... of typical locked-coil track strand wire rope construction. In steam generators and heat exchangers, flow-induced vibration results in fretting between the tubes and the supports, or baffles through which they pass. In the past, this phenomenon appears to have been a particular problem in the nuclear...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004155
EISBN: 978-1-62708-184-9
... blade excitation mechanisms during normal operation that include: Synchronous resonance of the blades at a harmonic of the unit running speed Nonuniform flows Blade vibration induced from a vibrating rotor or disc Self-excitation, such as flutter Random excitation—resonance...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005196
EISBN: 978-1-62708-187-0
... voltage in the primary coil induces a low-voltage, high current across the metal charge, which acts as a secondary coil. Because of electrical resistance in the metal, this electrical energy is converted into heat, which melts the charge. Once the metal is in its molten state, the magnetic field produces...