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A critical review of experimental aspects in ratcheting fatigue: microstructure to specimen to component

open access: yesJournal of Materials Research and Technology, 2019
In the past three decades ratcheting fatigue has attracted lots of research interest. Ratcheting can be defined as the directional progressive accumulation of plastic deformation of a material when it is subjected to a primary load along with a secondary
Surajit Kumar Paul
exaly   +3 more sources

The effect of yttrium addition on the ratcheting behavior of magnesium. [PDF]

open access: yesPLoS ONE
This study provides an in-depth investigation into the influence of yttrium (Y) addition on the ratcheting behavior of magnesium (Mg) alloys under asymmetric cyclic loading.
Haoge Shou   +8 more
doaj   +2 more sources

Ratcheting fatigue behaviour of advanced structural materials at their service temperatures [PDF]

open access: yesScientific Reports
Ratcheting fatigue behavior is a critical phenomenon in structural materials undergoing cyclic loading, particularly when combined with nonzero mean stress or multiaxial stress states.
Prerna Mishra   +9 more
doaj   +2 more sources

Botanical ratchets [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2009
Ratcheting surfaces are a common motif in nature and appear in plant awns and grasses. They are known to proffer selective advantages for seed dispersion and burial. In two simple model experiments, we show that these anisotropically toothed surfaces naturally serve as motion rectifiers and generically move in a unidirectional manner, when subjected to
KULIC, IM   +4 more
openaire   +4 more sources

Quantum Ratchets [PDF]

open access: yesPhysical Review Letters, 1997
Summary: We investigate quantum Brownian motion in adiabatically rocked ratchet systems. Above a crossover temperature \(T_c\) tunneling events are rare, yet they already substantially enhance the classical particle current. Below \(T_c\), quantum tunneling prevails and the classical predictions grossly underestimate the transport. Upon approaching \(T=
Reimann, Peter   +2 more
openaire   +7 more sources

Ratcheting–Fatigue Damage Assessment of Additively Manufactured SS304L and AlSi10Mg Samples under Asymmetric Stress Cycles

open access: yesMetals, 2023
The present study aims to investigate the interaction of ratcheting and fatigue phenomena for additively manufactured (AM) samples of SS304L and AlSi10Mg undergoing uniaxial asymmetric stress cycles.
M. Servatan   +2 more
doaj   +1 more source

Local Ratcheting at the Notch Region of Non-Press-Fitted and Press-Fitted Al 7075-T6 Samples Undergoing Asymmetric Stress Cycles

open access: yesMetals, 2023
The present study evaluated the ratcheting response of notched and press-fitted Al 7075-T6 specimens under stress-controlled asymmetric cycles. The degree of the interference fit (DIF) directly influenced the magnitude and the rate of progressive plastic
F. Hatami, A. Varvani-Farahani
doaj   +1 more source

Soliton ratchets [PDF]

open access: yesPhysical Review E, 2002
4 pages, 4 ...
SALERNO, Mario, QUINTERO N.
openaire   +6 more sources

Ratcheting synthesis

open access: yesNature Reviews Chemistry, 2023
Synthetic chemistry has traditionally relied on reactions between reactants of high chemical potential and transformations that proceed energetically downhill to either a global or local minimum (thermodynamic or kinetic control). Catalysts can be used to manipulate kinetic control, lowering activation energies to influence reaction outcomes.
Stefan Borsley   +3 more
openaire   +3 more sources

Ratcheting in structural adhesives

open access: yesPolymer Testing, 2021
When adhesively bonded joints are subjected to a cyclic load, they will primarily behave viscoelastically. Under certain loading conditions, they can also experience permanent deformation, or ratcheting.
Michael Krause, Lloyd Smith
doaj   +1 more source

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