Results 41 to 50 of about 29,843 (305)

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Effect of local induction heating on secondary roll-forming of high strength square tubes

open access: yes工程科学学报, 2016
The formability of corners was improved by heating the corner area of high strength square tubes with induction coils.Under the premise of not impacting the undeformed zone,we obtained the ideal sectional dimension,microstructure and properties of ...
PENG Xue-feng   +5 more
doaj   +1 more source

Intraradicular dentinal changes following fiber postremoval: Micro-computed tomography analysis

open access: yesContemporary Clinical Dentistry, 2023
Context: Excessive dentine wear during postremoval can occur due to the adhesion between the cement and the post. Aim: The aim is to evaluate dentine wear and microcrack occurrence following the removal of intraradicular fiberglass posts that were ...
Nathalia Elissa M. Almeida   +5 more
doaj   +1 more source

Modelling the effect of microcracks on transport properties of concrete [PDF]

open access: yes, 2015
The main objective of this thesis is to develop three-dimensional numerical models to predict transport properties of concrete from its internal structure. The models relate the macroscopic transport property to internal structure of concrete so a better
Dehghanpoor Abyaneh, Saeed
core   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

open access: yesAdvanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn   +5 more
wiley   +1 more source

Influence of Microcracks on Silver/Polydimethylsiloxane-Based Flexible Microstrip Transmission Lines

open access: yesApplied Sciences, 2020
Microcrack is commonly seen as a defect in materials that affects the performance of flexible radio frequency (RF) devices. Here, we investigate the influence of microcracks on the RF characteristics of flexible microstrip by stretching flexible ...
Daye Ding   +5 more
doaj   +1 more source

INCIDENCE OF DENTINAL MICROCRACKS AFTER ROOT CANAL PREPARATION WITH TWO RECIPROCATING SYSTEMS: A STEREOMICROSCOPIC STUDY [PDF]

open access: yesJournal of IMAB, 2018
Purpose: The objective of the present study was to evaluate the incidence of microcracks after root canal preparation with two reciprocating systems. Materials and methods: Thirty – six freshly extracted mandibular incisors were selected for this in ...
Irina Tsenova   +2 more
doaj   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan   +4 more
wiley   +1 more source

Enhancement of the Through‐Thickness Electrical Conductivity of Carbon‐Fiber‐Reinforced Plastics Using Large Graphite Particles

open access: yesAdvanced Engineering Materials, EarlyView.
To enhance through‐thickness conductivity without sacrificing impregnation, large spherical graphite particles are intentionally employed in a low‐viscosity resin. Unlike finer conductive fillers, these particles remain outside the fiber bundles and accumulate in resin‐rich interlaminar regions during molding.
Keito Hosoe   +6 more
wiley   +1 more source

Numerical Investigation of Perforation in Microcrack Propagation and Damage Analysis at the Cement Sheath

open access: yesApplied Sciences
Wellbore integrity maintenance constitutes a fundamental safety and technological challenge throughout the entire lifecycle of oil and gas wells (including production, injection, and CO2 sequestration operations).
Yu Yao   +5 more
doaj   +1 more source

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