Results 11 to 20 of about 1,159,209 (168)

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   +2 more sources

Experimental and Numerical Analysis of Ratcheting Behavior of Super Duplex SAF2507 Stainless Steel Under Uniaxial Loading

open access: yesApplied Sciences
Super duplex SAF2507 stainless steel is widely used in petrochemical piping systems during the transport of substances. The pipelines are subjected to cyclic loads due to road vibration and internal pressure, which causes the ratcheting behavior. In this
Hongru Liu   +3 more
doaj   +2 more sources

Numerical simulation of ratcheting and fatigue behaviour of mitred pipe bends under in-plane bending and internal pressure [PDF]

open access: yes, 2013
This paper investigates the ratcheting and fatigue behaviour of 90 degree single unreinforced mitred pipe bends subjected to a cyclic in-plane closing moment with a non-zero mean value and constant internal pressure. An experiment was conducted to induce
Wood, James   +3 more
core   +4 more sources

Ratchet analysis of structures under a generalised cyclic load history [PDF]

open access: yes, 2014
This paper introduces a new approach based upon the Linear Matching Method in order to obtain the ratchet limit of structures subjected to an arbitrary thermo-mechanical load history. This method varies from the traditional Linear Matching Method ratchet
Lytwyn, Michael   +2 more
core   +4 more sources

The Bree problem with different yield stresses on-load and off-load and application to creep ratcheting [PDF]

open access: yes, 2014
The ratchet boundaries and ratchet strains are derived for the Bree problem and an elastic perfectly plastic material with different yield stresses on-load and off-load.
Chen, Haofeng   +2 more
core   +4 more sources

Ratcheting of 316L stainless steel thin wire under tension-torsion loading [PDF]

open access: yesFracture and Structural Integrity, 2016
A series of cyclic tension-torsion tests under symmetric shear strain and asymmetric axial stress control in various loading paths are conducted on 100 ?m-diameter 316L steel wires applying a micro tensiontorsion fatigue testing apparatus. The ratcheting
Sichao Fu, Dunji Yu, Xu Chen
doaj   +2 more sources

Excellent Wear Resistance of a High-Speed Train Brake Disc Steel with High Hardening Ratcheting Strain Zone

open access: yesMetals, 2021
Wear resistance of brake discs has a significant effect on the safety of high-speed trains. In this work, the rolling–sliding wear resistance of a low-carbon martensitic brake disc steel was investigated.
Lei Yang   +5 more
doaj   +1 more source

Ratcheting Simulation of Additively Manufactured Aluminum 4043 Samples through Finite Element Analysis

open access: yesApplied Sciences, 2023
This study presents a finite element-based ratcheting assessment of additively manufactured aluminum 4043 samples undergoing asymmetric loading cycles.
M. Servatan   +2 more
doaj   +1 more source

Ratcheting Behavior of Intervertebral Discs Under Cyclic Compression: Experiment and Prediction

open access: yesOrthopaedic Surgery, 2019
Objective To evaluate the ratcheting behavior of intervertebral discs (IVD) by experiments and theoretical study. Method The lumbar spines of sheep were obtained at a local slaughterhouse, and the IVD was processed with upper and lower vertebral bodies ...
Chun‐qiu Zhang   +6 more
doaj   +1 more source

Depth-dependent ratcheting strains of young and adult articular cartilages by experiments and predictions

open access: yesBioMedical Engineering OnLine, 2019
Background Ratcheting strain is produced due to the repeated accumulation of compressive strain in cartilage and may be a precursor to osteoarthritis.
Li-Lan Gao   +5 more
doaj   +1 more source

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