Results 31 to 40 of about 35,895 (307)

Effect of prior cold work on the mechanical properties of weldments [PDF]

open access: yes, 2010
Heat exchanger units used in steam raising power plant are often manufactured using many metres of austenitic stainless steel tubes that have been plastically formed (bent and swaged) and welded into complex shapes. The amount of plastic deformation (pre-
Acar, Murat   +3 more
core  

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Effect of martensite volume fraction on cyclic plastic deformation behavior of dual phase steel: micromechanics simulation study

open access: yesJournal of Materials Research and Technology, 2019
The cyclic plastic deformation of an archetypal microstructure dual phase steels has been examined via micromechanics modelling based on representative volume elements technique.
Amit Kumar Rana   +2 more
doaj   +1 more source

The Dislocation Mechanics of Crystal/Polycrystal Plasticity

open access: yesCrystals, 2022
A brief history and update are given in four examples demonstrating that polycrystals are generally stronger than their individual component crystal grains because of obstructed dislocation pile-ups at grain boundaries.
Ronald W. Armstrong
doaj   +1 more source

Cyclic elasto-plastic fracture diagram and crack growth life of structures and machine elements [PDF]

open access: yes, 2006
The experimental method for the estimation of crack growth resistance of the structure and machine elements under cyclic elasto-plastic straining based on local plastic strain near the crack tip and assuming to receive the complex of the force and ...
Bogdanovich, A. V.   +3 more
core  

Loss of strength in Ni3Al at elevated temperatures [PDF]

open access: yes, 2006
Stress decrease above the stress peak temperature (750 K) is studied in h123i single crystals of Ni3(Al, 3 at.% Hf ). Two thermally activated deformation mechanisms are evidenced on the basis of stress relaxation and strain rate change experiments.
Ahmadieh A   +26 more
core   +4 more sources

A reformulation of strain gradient plasticity [PDF]

open access: yesJournal of the Mechanics and Physics of Solids, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fleck, N. A., Hutchinson, J. W.
openaire   +2 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

Steady states in severe plastic deformations and microstructure at normal and high pressure

open access: yesJournal of Materials Research and Technology
The main fundamental problem in studying plasticity and microstructure evolution is that they depend on five components of the plastic strain tensor εp, its entire path εppath, and pressure p and its path ppath, which leaves little hope of finding some ...
Valery I. Levitas
doaj   +1 more source

In situ observation of deformation processes in nanocrystalline face-centered cubic metals

open access: yesBeilstein Journal of Nanotechnology, 2016
The atomistic mechanisms active during plastic deformation of nanocrystalline metals are still a subject of controversy. The recently developed approach of combining automated crystal orientation mapping (ACOM) and in situ straining inside a transmission
Aaron Kobler   +3 more
doaj   +1 more source

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