Results 211 to 220 of about 692,061 (265)
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, 2020
The fretting fatigue behavior of Ni-based single crystal (NBSX) superalloy specimens with different crystal orientations ([110] and [010]) was investigated by in-situ scanning electron microscopy at 400 °C.
Yue Su +6 more
semanticscholar +1 more source
The fretting fatigue behavior of Ni-based single crystal (NBSX) superalloy specimens with different crystal orientations ([110] and [010]) was investigated by in-situ scanning electron microscopy at 400 °C.
Yue Su +6 more
semanticscholar +1 more source
, 2020
Fretting fatigue damage is a typical material damage arising in mechanical components. In such a damage condition, surface cracks can initiate at the surface contact zone, and under a fluctuating loading they can grow up to the complete failure of the ...
S. Vantadori, J. V. Valeo, A. Zanichelli
semanticscholar +1 more source
Fretting fatigue damage is a typical material damage arising in mechanical components. In such a damage condition, surface cracks can initiate at the surface contact zone, and under a fluctuating loading they can grow up to the complete failure of the ...
S. Vantadori, J. V. Valeo, A. Zanichelli
semanticscholar +1 more source
Fretting Wear Mechanisms and Their Effects on Fretting Fatigue
Journal of Tribology, 1988Fretting wear and fretting fatigue are governed by the rate of formation of materials (third-bodies) between the initial contact surfaces. Furthermore, the third-bodies must be maintained within the contact. The issue of the race between third-body formation and subsurface damage conditions the effect of fretting on fatigue.
Y. Berthier +3 more
openaire +1 more source
1994
So far, we have presented several of the elements of calculation necessary to analyse a range of idealised fretting contacts. They merely provide tools for determining the state of stress, strain and displacement, but do not, in themselves, permit production of initiation or crack propagation criteria, without extensive experimental data. The object of
D. A. Hills, D. Nowell
openaire +1 more source
So far, we have presented several of the elements of calculation necessary to analyse a range of idealised fretting contacts. They merely provide tools for determining the state of stress, strain and displacement, but do not, in themselves, permit production of initiation or crack propagation criteria, without extensive experimental data. The object of
D. A. Hills, D. Nowell
openaire +1 more source
ASME 2011 Rail Transportation Division Fall Technical Conference, 2011
The effect of surface damage by fretting corrosion pits under the backing ring or wheel seat will provide stress risers that will serve as crack initiation sites for fatigue crack initiation. Approximately one-half of North American axle failures are initiated by fretting. Both fretting under the backing ring and fretting in the wheel seat are reviewed.
openaire +1 more source
The effect of surface damage by fretting corrosion pits under the backing ring or wheel seat will provide stress risers that will serve as crack initiation sites for fatigue crack initiation. Approximately one-half of North American axle failures are initiated by fretting. Both fretting under the backing ring and fretting in the wheel seat are reviewed.
openaire +1 more source
On Crack Initiation Mechanisms in Fretting Fatigue
Journal of Applied Mechanics, 2000By using the crack analogue model of rigid flat-ended contact, crack initiation in fretting fatigue is analyzed. The coefficient of friction at the edge of contact, which characterizes the asymptotic stress field, is considered as the primary controlling parameter in the process.
Yang, B., Mall, S.
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Mechanics of fretting fatigue crack formation
Wear, 1995Abstract Fretting is a contact damage process arising from surface microslip associated with small-scale oscillatory motion of damped structural members. The fretting damage process is a synergistic competition among wear, corrosive and fatigue phenomena driven by both the microslip at the contact surface and cyclic fretting contact ...
Matthew P. Szolwinski, Thomas N. Farris
openaire +1 more source
2003
Abstract : The multitask objectives of the plan discussed in this proposal are to research the role and effects of fretting on structural life of components; develop and demonstrate the feasibility of integrating candidate fretting fatigue predictive analytic model(s) into structural integrity methods; integrate and implement the techniques for ...
N. Young +4 more
openaire +1 more source
Abstract : The multitask objectives of the plan discussed in this proposal are to research the role and effects of fretting on structural life of components; develop and demonstrate the feasibility of integrating candidate fretting fatigue predictive analytic model(s) into structural integrity methods; integrate and implement the techniques for ...
N. Young +4 more
openaire +1 more source