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flow-induced vibrations

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001082
EISBN: 978-1-62708-214-3
... were also constructed. It was determined that the blades failed by fatigue that had been accelerated by stress-corrosion cracking. The mechanism of failure was flow-induced vibration, in which the vortex-shedding frequencies of the blades were attuned to the natural frequency of the blade/hub...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091703
EISBN: 978-1-62708-229-7
... the cooler. Two previous leaks had been determined to have been caused by poor-quality rolling between the tube and tube sheet. Plant personnel suspected the possibility of fatigue cracks caused by flow-induced vibration. Investigation Discussion Conclusion Recommendations The tube...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001313
EISBN: 978-1-62708-215-0
... the tube and tube sheet. Plant personnel suspected the possibility of fatigue cracks caused by flow-induced vibration. Specimen Selection The cooler unit was sent back to the original equipment manufacturer (OEM) in France to determine the cause of the leaks. The tube was removed from the cooler...
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
... drum. Fig. 4 Cross sections 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...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001617
EISBN: 978-1-62708-227-3
.... Eisinger F.L. : “Designing Piping Systems Against Acoustically Induced Structural Fatigue,” Flow-Induced Vibration , PVP-Vol. 328 , ASME , 1996 , pp. 397 – 404 . 24. Miller K.J. and O'Donnell W.J. : “The Fatigue Limit and its Elimination,” Fatigue Fract. Eng. Mater. Struct...
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
... (a) Schematic of the third-body theory. (b) Graph of debris flow concept as a function of debris layer thickness. Adapted from Ref 62 Fig. 18 Illustration of the contact oxygenation concept to formalize the transition from pure abrasive to composite abrasive-adhesive fretting scar interface...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001828
EISBN: 978-1-62708-241-9
... the two-phase flow operation of the HT pump. Vibratory Stresses Induced during Normal Operation The shaft vibrations (<0.125 mm) and frame vibrations (3 mm/s peak unfiltered) experienced during the normal operation of the HT pumps are extremely low and are well within those specified in the ISO...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001486
EISBN: 978-1-62708-234-1
... is generally induced by a rapid increase in the velocity of the liquid, as may arise from the sudden divergence of flow initiated by the presence of objects, or from vibration of adjacent metal surfaces. Cavitation from the latter cause can, therefore, occur when the liquid itself is in a relatively static...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... Vibration on a High Pressure Core Injection Pump at a Nuclear Plant Case #2: Boiler Feed Pump Alignment Change Causing Pump Failure and Turbine Pedestal Cracking Case #3: Cavitation Destroying Impellers on Large Circulating Water Pumps Case #4: Low Pump Flow Destroying Antifriction Bearings...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001594
EISBN: 978-1-62708-229-7
... cracks, once a crack is observed, the component is probably approaching the end of its useful life and can be expected to leak in a relatively short time. For root cracks, when the fracture surface is viewed from the socket end, fracture flow lines extend from the root toward the face of the weld...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... movement between a corrosive fluid and the metal surface. Erosion may accelerate corrosion of high-temperature components discussed previously. Generally, mechanical wear, abrasion, or abrupt changes in flow direction are involved. Metal or alloy loss results when the protective, passive surface films...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046418
EISBN: 978-1-62708-234-1
... was designed to have a nominal clearance from a concentric housing around it, with cooling water flowing through the intervening annular space. The region of maximum wear was on the same side of the chamber as the region of severest pitting. In operation, gases in the combustion chamber reached a very high...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001602
EISBN: 978-1-62708-229-7
... of the centrifugal force, gas flow, and the radial component of the contact force between buckets. Additionally, the thermal stresses induced by heat in the component are given by: (Eq 2) Δ σ = α ⋅ E ⋅ Δ T where α is the thermal expansion coefficient (equivalent for the columnar and equiaxial grains...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001769
EISBN: 978-1-62708-241-9
... in oral cavity were due to bacterial activity [ 9 ]. Besides, calcium accumulation was also noticed in hot spring [ 10 ]. Mixed fouling of microorganism and other minerals existing in various water systems take place when the water flows through equipment and pipes. It decreases the performance...
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
..., heat treatment, geometry, surface roughness, residual stress, etc.), cavitation resistance depends largely on liquid property, flow speed, vibration characteristics, temperature, hydrostatic pressure, and so on. For certain materials, cavitation resistance is related to hardness, but for most metallic...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... of abrasives) Ineffective lubricants Failed filter seals Fretting induced by slight looseness in clamped joints subject to vibration Poor bearing or materials engineering design (redesign could reduce or eliminate problem) Water contamination High velocities or uneven flow distribution...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
... or eliminate damage occurring under the damage mechanism? For example, fracture, cracking, and distortion all indicate that stress was involved. Case in point: damage was induced on the interior of a pipe by a mechanism of flow-assisted corrosion (also commonly referred to as erosion-corrosion ), ultimately...
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 fretting, failure by corrosion, failure by plastic flow, failure by rolling-contact fatigue, and failure by damage. The article discusses the effects of fabrication practices, heat treatment and hardness of bearing components, and lubrication of rolling-element bearings with a few examples. corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001811
EISBN: 978-1-62708-241-9
... to prevent thermal distortion. Thermal gradients can cause a change of shape, which is a distortion of the component. The distortion is proportional to the gradient of the strain, and so it is proportional to the thermal gradient. By Fourier’s first law, the heat flow is proportional to the thermal gradient...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001757
EISBN: 978-1-62708-241-9
... to idle conditions and then advancing the engine speed. High-exhaust gas temperature, low fuel flow, RPM hang up, loud bangs, and engine vibration are symptoms of stalls [ 5 ]. There are two kinds of troubleshooting procedure for stall by J79 engine technical order. The difference between the two...