Results 31 to 40 of about 1,651 (213)

The effect of microstructure on the fatigue behavior of titanium alloy graded porous structures fabricated by selective laser melting

open access: yesJournal of Materials Research and Technology, 2023
The bionic-inspired Ti–15Mo gradient porous structures were fabricated by selective laser melting (SLM) for the first time in this work. The compression-compression fatigue behavior of functional gradient Ti–15Mo porous structures is investigated, with ...
Jian Chen   +9 more
doaj   +1 more source

Force‐Induced Control of Circularly Polarized Luminescence With Rotaxane Architecture

open access: yesAngewandte Chemie, EarlyView.
Force‐induced reversible on/off switching of circularly polarized luminescence is achieved with a rotaxane‐based supramolecular mechanophore. The mechanophore, featuring a chiral helicene luminophore, is incorporated as a first network cross‐linker into a double‐network organogel.
Keigo Nonaka   +10 more
wiley   +2 more sources

Pipeline Stress Test Simulation Under Freeze-Thaw Cycling via the XGBoost-Based Prediction Model

open access: yesFrontiers in Earth Science, 2022
This study conducted ten freeze-thaw cyclic tests to clarify the effect of freeze-thaw cycles on the forces acting on the buried oil pipeline. The stress evolution in the Q345 steel pipeline versus the number of freeze-thaw cycles was obtained.
Zhen-Chao Teng   +5 more
doaj   +1 more source

Nonequilibrium stationary states with ratchet effect [PDF]

open access: yesPhysical Review E, 2005
An ensemble of particles in thermal equilibrium at temperature $T$, modeled by Nosè-Hoover dynamics, moves on a triangular lattice of oriented semi-disk elastic scatterers. Despite the scatterer asymmetry a directed transport is clearly ruled out by the second law of thermodynamics.
CRISTADORO, GIAMPAOLO, D.L. Shepelyansky
openaire   +4 more sources

Effect of nano-clay addition and heat treatment on tensile and stress-controlled low-cycle fatigue behaviors of aluminum-silicon alloy

open access: yesFracture and Structural Integrity, 2021
The objective of the present paper is to investigate the stress-controlled low-cycle fatigue behavior of piston aluminum-silicon (AlSi) alloy reinforced with nano-clay particles and T6 heat treatment.
A. Basiri   +5 more
doaj   +3 more sources

Micromechanical investigation of soil plasticity using a discrete model of polygonal particles [PDF]

open access: yesTheoretical and Applied Mechanics, 2008
The mechanical behavior of soils has been traditionally described using continuum-mechanics-based models. These are empirical relations based on laboratory tests of soil specimens.
Alonso-Marroquin Fernando   +2 more
doaj   +1 more source

The role of pore structures on the fatigue properties of additively manufactured porous tantalum scaffolds produced by electron beam powder bed fusion

open access: yesJournal of Materials Research and Technology, 2022
In this work, porous tantalum scaffolds with structures of cubic, G7 and rhombic dodecahedron with different strut angles were fabricated by electron beam powder bed fusion (EB-PBF).
Yu Guo   +7 more
doaj   +1 more source

CRYOGENIC RATCHETING OF PRESTRAINED AUSTENITIC STAINLESS STEEL S30408

open access: yesJixie qiangdu, 2020
Taking advantage of the EUM-25 K20 tension-torsion fatigue testing machine by CARE,the cryogenic uniaxial ratcheting tests were carried out for the S30408 specimens with and without weld,and with 0%,8%,and 12% pre-strains at110 K.
LI LeiLei   +3 more
doaj  

Magnetic ratchet effect in phosphorene [PDF]

open access: yesPhysical Review B, 2021
The magnetic ratchet effect has been studied in phosphorene by the use of the Boltzmann kinetic equation that is a semi-classical approach. The Hamiltonian of phosphorene in a steady parallel magnetic field is derived using the tight-binding model. We consider the effect of the magnetic field on non--linear dynamics in the presence of an ac laser field
openaire   +2 more sources

Debt maturity and the leverage ratcheting effect [PDF]

open access: yesFinance, 2019
Admati, Demarzo, Hellwig, et Pfleiderer (ADHP, 2018) font remarquer que les modèles statiques d’endettement optimal supposent que les entreprises n’ont aucune dette à l’origine. Dans ce cas, le levier qui maximise la valeur de l’entreprise maximise aussi la richesse des actionnaires initiaux.
Leland, Hayne, Hackbarth, Dirk
openaire   +4 more sources

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