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ultrasonic vibration damage

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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
... Favro, et al. ( Ref 3 ) introduced ultrasonic welders as vibration sources and when increasingly sensitive, reliable thermal cameras became available. Interest grew in applying the method to inspect gas turbine blades and disks, and it has been used industrially for blade inspection since about 2006...
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
... The measurement devices or sensors, which tend to damage the contact surface and interfere with the bonding process The highly localized (a few micrometers) and transient (typically 20 kHz vibration) nature of ultrasonic bonding The necessity of a high spatial resolution (micrometer-scale vibration...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006446
EISBN: 978-1-62708-190-0
... of intrinsic nonlinearity in intact solids, and the main mechanisms of excess nonlinearity in damaged metals. It describes the measurement methods for nonlinear ultrasonic materials characterization and flaw-detection. The article schematically illustrates the instrumentation used for measurements...
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
... the most-used CM technique. The conditions vibration analysis monitors on rotating machines are: Imbalance of rotating machine parts Coupling problems Loose parts Misaligned or damaged gear teeth Shaft misalignment Cracks, pits, and roughness in bearings Cracks and bends in shafts...
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
...-reinforced polymer-matrix composites low-frequency vibration method metal-matrix composites nondestructive evaluation thermography ultrasonic emission Nondestructive Testing of Composite Materials Composite materials, because of their nonhomogeneous, anisotropic characteristics, pose significant...
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
... surface vibrations can be monitored with a detection laser and sensitive interferometer. The resulting signals are equivalent to conventional pulse-echo ultrasonic signals. τ, rise time; β λ , wave-length-dependent optical absorption coefficient. Fig. 13 Laser ultrasonic signal from a 3 mm (0.12...
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: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001226
EISBN: 978-1-62708-170-2
... and polishing compounds prior to plating operations, and cleaning greases and sludge from rebuilt components for automotive and aircraft applications. Ultrasonic cleaning is powerful enough to remove tough contaminants, yet gentle enough not to damage the substrate. It provides excellent penetration...
Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001832
EISBN: 978-1-62708-181-8
.... Water-Base Detergent Cleaning Water-base detergent cleaning assisted by ultrasonic agitation is effective in removing debris and deposits from the fracture surface and, if proper solution concentrations and times are used, does not damage the surface. A particular detergent that has proved...
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
... is performed using frequencies between 1.0 and 25 MHz, which are well above the range of human hearing, which is approximately 20 Hz to 20 kHz. Ultrasonic waves are mechanical vibrations, where the amplitudes of vibrations in metal parts being ultrasonically inspected impose stresses that are well below...
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
... method. The techniques are hot-tool, hot-gas, extrusion, focused infrared, laser, friction, vibration, spin, ultrasonic, and electromagnetic welding techniques (resistance, induction, dielectric, and microwave welding). The article concludes with a discussion on welding evaluation methods...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003657
EISBN: 978-1-62708-182-5
... is coupled to the sample being inspected with an ultrasonic (UT) gun in contact with the sample at one point of its surface. The energy then quickly spreads to all corners of the sample, with the amplitude of vibration building up in the sample while the UT gun is on. If there is a crack present...
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
... frequencies; (e.g., high-frequency loading of turbine blades). In fact, ultrasonic fatigue testing may provide a better simulation of the higher frequency vibrations encountered in service than conventional testing does in these cases. The test method is most applicable when the test material ultimately...
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
... can reveal cracked metal or adhesive fillets, delamination or debonding due to water intrusion or corrosion, impact or foreign object damage, and blisters, dents, or other mechanical damage. Ultrasonic Inspection A number of different types of ultrasonic inspection using pulsed ultrasound waves...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003043
EISBN: 978-1-62708-200-6
... consolidation cycles compare very favorably with the lengthy cure and postcure cycles typically needed for thermosets. Previous work has shown that thermoplastic composites can be joined by local consolidation of an interface, using a range of techniques. These include ultrasonic welding, induction bonding...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003055
EISBN: 978-1-62708-200-6
... grinding and provides information on tooling, wheel selection, work material, and operational factors. It also discusses precision slicing and slotting, lapping, honing, and polishing as well as abrasive waterjet, electrical discharge, laser, and ultrasonic machining. abrasive machining ceramics...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... by corrosive fluids. (a) Drawn cup for a needle-roller bearing damaged by vibration in the presence of dirt and moisture. Roller spacing is indicated by polished indentations. (b) and (c) Corrosion or water etch on bearing components resulting from a defective seal in a grease-lubricated bearing application...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006758
EISBN: 978-1-62708-295-2
... Abstract The goal of using nondestructive evaluation (NDE) in conjunction with failure analysis is to obtain the most comprehensive set of data in order to characterize the details of the damage and determine the factors that allowed the damage to occur. The NDE results can be used to determine...
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
... the result of external vibration, but in many cases, it is the consequence of one of the members of the contact being subjected to a cyclic stress (that is, fatigue), which gives rise to another and usually more damaging aspect of fretting, namely the early initiation of fatigue cracks. This characteristic...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006936
EISBN: 978-1-62708-395-9
...-transmission technique is also extremely useful for detecting disbonds, core damage, and moisture intrusion in sandwich structures (parts with a honeycomb or foam core surrounded by laminate face sheets). Pulse echo Pulse-echo ultrasonic inspection provides the most information about the material...