Results 21 to 30 of about 142,964 (258)

Incidence and contributing factors of non-root canal treated teeth with chronic fatigue root fracture: A cross-sectional study

open access: yesJournal of the Formosan Medical Association, 2023
Background/purpose: Chronic fatigue root fracture describes a root fracture in a non-root canal treated (non-RCT) tooth. This study aimed to report the incidence and contributing factors of non-RCT teeth with chronic fatigue root fracture in a Taiwanese ...
Shue-Fen Yang   +6 more
doaj   +1 more source

Cause Analysis and Solution of Premature Fracture of Suspension Rod in Metro Gear Box

open access: yesMetals, 2022
Through the appearance observation of suspension rod in the metro gearbox, macro and micro observation of the fracture and quantitative analysis of the fracture, combined with the metallographic and hardness examination results of the boom, the finite ...
Wenming Liu   +3 more
doaj   +1 more source

Computer simulation of fatigue under diametrical compression [PDF]

open access: yes, 2007
We study the fatigue fracture of disordered materials by means of computer simulations of a discrete element model. We extend a two-dimensional fracture model to capture the microscopic mechanisms relevant for fatigue, and we simulate the diametric ...
Andrade Jr., J. S.   +3 more
core   +2 more sources

Understanding the Fatigue Notch Sensitivity of High-Strength Steels through Fracture Toughness

open access: yesMetals, 2023
This study presents an innovative approach for selecting high-strength materials for fatigue dimensioning parts, considering both fracture toughness and fatigue performance.
Sergi Parareda   +4 more
doaj   +1 more source

Mechanics and mechanisms of fatigue in a WC-Ni hardmetal and a comparative study with respect to WC-Co hardmetals [PDF]

open access: yes, 2015
There is a major interest in replacing cobalt binder in hardmetals (cemented carbides) aiming for materials with similar or even improved properties at a lower price.
Coureaux Mustelier, David   +5 more
core   +2 more sources

Property optimization of low-cycle fatigue in Al-Si piston alloy at elevated temperatures by ultrasonic melt treatment

open access: yesJournal of Materials Research and Technology, 2019
The cyclic deformation and damage behaviors of Al-Si piston alloys are comprehensively studied. It is found that the fatigue cracks mainly initiate from broken primary Si at low temperature and phase/matrix interface debonding at higher temperature.
M. Wang   +4 more
doaj   +1 more source

Low cycle fatigue properties and fatigue mechanism of DD6 single crystal superalloy under asymmetrical cyclic loading

open access: yesJournal of Aeronautical Materials, 2023
The low cycle fatigue(LCF) properties of DD6 single crystal superalloy were investigated at 700 ℃ and R of 0.05. SEM was used to study the fracture surface and fracture microstructure.
LI Wei   +6 more
doaj   +1 more source

To Improve Total Knee Prostheses Performance Using Three-Phase Ceramic-Based Functionally Graded Biomaterials

open access: yesFrontiers in Materials, 2019
One of the common issues that occur after total knee replacement surgery is the aseptic loosening. The problem usually occurs after about 15 years from the surgery.
Majid Reza Ayatollahi   +3 more
doaj   +1 more source

Fracture simulation for zirconia toughened alumina microstructure [PDF]

open access: yes, 2013
Purpose - The purpose of this paper is to describe finite element modelling for fracture and fatigue behaviour of zirconia toughened alumina microstructures. Design/methodology/approach - A two-dimensional finite element model is developed with an actual
Forest, Bernard   +2 more
core   +7 more sources

Applications of Phase Field Methods in Modeling Fatigue Fracture and Performance Improvement Strategies: A Review

open access: yesMetals, 2023
Fatigue fracture simulation based on phase field methods is a promising numerical approach. As a typical continuum approach, phase field methods can naturally simulate complex fatigue fracture behavior.
Haitao Cui, Chenyu Du, Hongjian Zhang
doaj   +1 more source

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