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high-cycle fatigue

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Published: 01 January 2002
Fig. 53 High-cycle fatigue in D-6 AC steel at Δ K > 60 MPa m (54.6 ksi in. ). (a) Macroscopic view of rapid fatigue growth under plane-stress conditions. (b) High-quality TEM replica showing elongated shear dimples from fatigue region More
Image
Published: 01 January 2002
Fig. 6 High-cycle fatigue in D6AC steel at Δ K > 60 MPa m (54.6 ksi in. ). (a) Macroscopic view of rapid fatigue growth under plane-stress conditions. (b) High-quality TEM replica showing elongated shear dimples from fatigue region More
Image
Published: 15 January 2021
Fig. 6 High-cycle fatigue in D6AC steel at Δ K > 60 MPa m (54.6 ksi in . ). (a) Macroscopic view of rapid fatigue growth under plane-stress conditions. (b) High-quality transmission electron microscopy replica showing elongated shear dimples from fatigue region More
Image
Published: 15 January 2021
Fig. 54 High-cycle fatigue in D6AC steel at Δ K > 60 M P a m (54.6 ksi in .). (a) Macroscopic view of rapid fatigue growth under plane-stress conditions. (b) High-quality transmission electron microscopy replica showing elongated shear dimples from fatigue region More
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Published: 01 December 2019
Fig. 5 Close-up view of regions of propagation under high-cycle fatigue mechanisms. Note the smooth finish of the beach marks More
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Published: 30 August 2021
Fig. 3 Examples of variable-amplitude fatigue loading. (a) Single high-cycle superimposed loading. (b) Multiple high-cycle superimposed loading. (c) Variable multiple high-cycle superimposed loading. Adapted from Ref 3 More
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
... Abstract Nuclear power plants typically experience two or three high-cycle fatigue failures of stainless steel socket-welded connections in small bore piping during each plant-year of operation. This paper discusses fatigue-induced failure in socket-welded joints and the strategy Texas...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001794
EISBN: 978-1-62708-241-9
... propagation occurred on about 95% of the total cross section of the shaft, under both low-cycle and high-cycle fatigue mechanisms. It was found that the fillet radius at the fracture’s origin was smaller than the one provisioned by design. As a result, the stresses at this location exceeded the values used...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001136
EISBN: 978-1-62708-229-7
... the problem of slow, high cycle fatigue crack growth, at normal operating stresses in similar fans. Bending fatigue Centrifugal blowers Electric power generation Weld defects Low-carbon steel Fatigue fracture Joining-related failures Introduction Constraints of relatively high altitudes...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001025
EISBN: 978-1-62708-214-3
... (microscopic features indicative of subcritical fatigue crack growth) were found throughout the region ( Fig. 7 .) The striations are fine and evenly spaced, with a limited amount of associated plastic deformation; this supports the speculation that the crack growth mechanism is high-cycle fatigue. The spacing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006421
EISBN: 978-1-62708-217-4
... and/or corrosion fatigue. It was concluded that crack propagation of the fracture in the wing panel occurred by a combination of corrosion and high-cycle fatigue in the end fastener holes. It was recommended that future panels be manufactured of 2024 aluminum. Corrosion fatigue Crack initiation Crack...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001366
EISBN: 978-1-62708-215-0
... in the vicinity of the vane trailing edge. Some remaining vanes exhibited radial and transverse cracks in similar locations. Binocular and scanning electron microscope examinations showed that the cracks had been caused by high-cycle fatigue and had progressed from multiple origins on the vane surface. Structural...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001553
EISBN: 978-1-62708-217-4
... to 0.015 in.) were found also in other forgings, such as exhaust rocker arms, main rotor drag brace clevises, bolts of carriage diagonal struts, and spring legs of main landing gears. The failure mode was low-stress, high-cycle fatigue involving tension and bending loads. The main cause was a manufacturing...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001764
EISBN: 978-1-62708-241-9
... the ID, evidence of high-cycle fatigue. Based on the failure rate and fatigue life predictions, it was recommended to discontinue the use of drive shafts with the inferior design. drive shaft fatigue fracture stress concentration low carbon steel fatigue cracking fatigue life prediction...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001842
EISBN: 978-1-62708-241-9
..., microhardness and tensile testing, stress calculations, and vibration measurements. Based on the results, the roll fracture was attributed to high-cycle fatigue associated with a plug weld over one of the five threaded fasteners added to secure a balance weight inside the roll. The balance weight was installed...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... used in the laboratory portion of the failure investigation are mentioned in the failure examples. The topics covered are creep, localized overheating, thermal-mechanical fatigue, high-cycle fatigue, fretting wear, erosive wear, high-temperature oxidation, hot corrosion, liquid metal embrittlement...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... Abstract The principal types of elevated-temperature mechanical failure are creep and stress rupture, stress relaxation, low- and high-cycle fatigue, thermal fatigue, tension overload, and combinations of these, as modified by environment. This article briefly reviews the applied aspects...
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Published: 15 January 2021
Fig. 3 S - N curve for cruciform metal-active-gas-welded joints (structural steel S355, ASTM A572 grade 5). LCF, low-cycle fatigue; HCF, high-cycle fatigue; P F , probability of failure More
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Published: 15 January 2021
Fig. 8 Example bithermal fatigue thermomechanical fatigue waveforms. (a) Bithermal fatigue waveform employed during laboratory testing. Image (a) adapted from Ref 6 , with permission from Elsevier. (b) Coupled high-cycle fatigue and bithermal fatigue waveform More
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Published: 01 December 1993
Fig. 11 Scanning electron micrograph of fracture surface from fatigue specimen excised from impeller, showing typical high-cycle fatigue morphology for aluminum alloys tested in air. 266× More