Results 91 to 100 of about 6,156 (312)

Fatigue crack growth. Overload and underload interactions [PDF]

open access: yes, 2006
This article deals with the study of the overload- underload interactions effects on fatigue crack growth (FCG) rate. With the purpose of understanding of overload-underload interaction mechanisms the FEM modeling of stress-strain state at the crack tip ...
Yasniy, P.   +3 more
core  

A Dislocation Perspective on Strength and Toughness in Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
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  

Electrified Damage in Motion Systems

open access: yesAdvanced Engineering Materials, EarlyView.
The electrified damage in motion systems is a fundamental framework presenting the degradation pathway arising from the coupling of electrical energy transport with mechanical contact and interfacial chemistry. The framework positions electrified damage as a distinct degradation regime with unique characteristic surface morphologies and failures of ...
M. Humaun Kabir   +2 more
wiley   +1 more source

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

A Hybrid Prognostic Methodology and its Application to Well-Controlled Engineering Systems [PDF]

open access: yes, 2015
This thesis presents a novel hybrid prognostic methodology, integrating physics-based and data-driven prognostic models, to enhance the prognostic accuracy, robustness, and applicability.
Eker, Ömer Faruk
core  

Fatigue crack growth assessments in welded components including crack\ud closure effects: Experiments and 3-D numerical modeling

open access: yes, 2013
This work provides a numerical and experimental investigation of fatigue crack growth behavior in steel\ud weldments including crack closure effects and their coupled interaction with weld strength mismatch.
Ruggieri, Claudio   +2 more
core   +1 more source

Continuous Stiffness Graded Metal–Ceramic Femoral Stems: UMAT‐Based Design and Finite Element Assessment

open access: yesAdvanced Engineering Materials, EarlyView.
Functionally graded metal–ceramic femoral stems are engineered through continuous UMAT‐based stiffness tailoring, eliminating discrete material interfaces while enhancing biomechanical compatibility. Low‐index power‐law gradation optimizes load transfer, reduces stress shielding, and controls implant–bone micromotion, highlighting a materials‐design ...
Rihem Nouira, Sameh Elleuch, Hanen Jrad
wiley   +1 more source

Crack propagation in honeycomb cellular materials: a computational approach

open access: yes, 2012
Computational models based on the finite element method and linear or nonlinear fracture mechanics are herein proposed to study the mechanical response of functionally designed cellular components. It is demonstrated that, via a suitable tailoring of the
Paggi, M, Paggi, Marco, Marco Paggi
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg   +6 more
wiley   +1 more source

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