Results 81 to 90 of about 49,270 (307)

A practical methodology to select fretting palliatives: Application to shot peening, hard chromium and WC-Co coatings [PDF]

open access: yes, 2005
Considered as a plague for numerous industrial assemblies, fretting, associated to slight oscillatory displacement, is encountered in all quasi-static contacts subjected to vibration.
Fouvry, S., Kubiak, K., Marechal, A.M.
core   +1 more source

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

open access: yesAdvanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco   +7 more
wiley   +1 more source

Risk estimation for LCF crack initiation

open access: yes, 2013
An accurate risk assessment for fatigue damage is of vital importance for the design and service of today's turbomachinery components. We present an approach for quantifying the probability of crack initiation due to surface driven low-cycle fatigue (LCF)
Gottschalk, Hanno   +3 more
core   +1 more source

Additive Manufacturing of NiTi Shape Memory Alloys for Elastocaloric Applications: A Review

open access: yesAdvanced Functional Materials, EarlyView.
Additive manufacturing enables complex NiTi architectures that overcome key limitations in elastocaloric refrigeration, including poor heat transfer and high mechanical work input. This review surveys recent advances in LPBF‐ and DED‐fabricated NiTi shape memory alloys for elastocaloric applications, highlighting process–structure–performance ...
Ignatius Andre Setiawan   +7 more
wiley   +1 more source

Effect of salt deposition patterns on stress corrosion cracking

open access: yesnpj Materials Degradation
While substantial research has been devoted to understanding environmental degradation mechanisms in Ni-base superalloys, the influence of solid contamination morphology on cracking remains comparatively underexplored.
Mustafa Elsherkisi   +4 more
doaj   +1 more source

Fatigue life prediction modeling for turbine hot section materials [PDF]

open access: yes
A major objective of the fatigue and fracture efforts under the NASA Hot Section Technology (HOST) program was to significantly improve the analytic life prediction tools used by the aeronautical gas turbine engine industry.
Halford, G. R.   +4 more
core   +2 more sources

Correlation between the pivot node concept and fatigue crack closure [PDF]

open access: yes, 2018
The study of fatigue crack growth has been commonly done by means of bi-dimensional models and assuming a homogeneous behaviour through the thickness. According to the specimen thickness, a state of plane stress or plane strain is presumed.
Camas, Daniel   +2 more
core  

Boron‐Doped Nano‐Crystalline Coated Carbon Fibers for Phasic Dopamine Sensing

open access: yesAdvanced Healthcare Materials, EarlyView.
This uniform coating presents a mix of graphitic and diamond‐like carbon to create a mechanically and electrically robust alternative for the electrochemical detection of dopamine. The electrodes in this work possess the equivalent sensitivity to the state‐of‐the‐art FSCV dopamine detecting electrodes, whilst demonstrating an ability to withstand ...
Simon J. Higham   +19 more
wiley   +1 more source

FATIGUE CRACK GROWTH LIFE ANALYSIS OF NICKEL-BASE SINGLE CRYSTAL TURBINE BLADE TENON

open access: yesJixie qiangdu, 2015
Based on the work status of the aero-engine turbine blade,the contact fatigue tests of modeling specimens of tenon / groove were carried out. A fatigue crack growth life model of the modeling specimens was established. The crystallographic finite element
ZHANG ZhongKui
doaj  

Fatigue Damage Mechanism-Based Dependent Modeling With Stochastic Degradation and Random Shocks

open access: yesIEEE Access, 2018
This paper proposes a dependent modeling method for reliability estimation of metal structures under constant amplitude loading and random shocks considering the nonlinear damage accumulation mechanism.
Dan Xu   +4 more
doaj   +1 more source

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