Results 11 to 20 of about 781,009 (287)

Comparison of the Frequency of Dentinal Microcracks after Apical Resection in the Roots with Cast and Fiber Posts [PDF]

open access: yesJournal of Mashhad Dental School, 2022
Introduction: Endodontically treated teeth are prone to fracture and cracks. Accordingly, different types of posts are used to increase the fracture resistance of teeth.
Eshaghali Saberi   +4 more
doaj   +1 more source

Asymptotic series solution of variational stokes problems in planar domain with crack-like singularity

open access: yesApplied Mathematics in Science and Engineering, 2022
A class of nonlinear variational problems describing incompressible fluids and solids by stationary Stokes equations given in a planar domain with a crack (infinitely thin flat plate in fluids) is considered.
Victor A. Kovtunenko, Kohji Ohtsuka
doaj   +1 more source

Influence of association state and DNA binding on the O2-reactivity of [4Fe-4S] fumarate and nitrate reduction (FNR) regulator [PDF]

open access: yes, 2014
The fumarate and nitrate reduction (FNR) regulator is the master switch for the transition between anaerobic and aerobic respiration in Escherichia coli.
Andrew J. Thomson   +41 more
core   +1 more source

Crack-Growth Behavior in Thermal Barrier Coatings with Cyclic Thermal Exposure [PDF]

open access: yes, 2019
Crack-growth behavior in yttria-stabilized zirconia-based thermal barrier coatings (TBCs) is investigated through a cyclic thermal fatigue (CTF) test to understand TBCs’ failure mechanisms.
Choi, Baig-Gyu   +7 more
core   +1 more source

Determining Crack Kinematics from Imaged Crack Patterns

open access: yesSSRN Electronic Journal, 2021
Determining the relationship between the cause of damage and the subsequent structural behavior of infrastructure systems requires an accurate characterization of the propagation of cracks, which represents the evolution of the damage state. When no information about the cause of damage is available, kinematic approaches can be used to describe the ...
B.G. Pantoja-Rosero   +4 more
openaire   +2 more sources

Propagation of surface initiated rolling contact fatigue cracks in bearing Steel [PDF]

open access: yes, 2016
Surface initiated rolling contact fatigue, leading to a surface failure known as pitting, is a life limiting failure mode in many modern machine elements, particularly rolling element bearings.
Kadiric, A, Olver, A, Rycerz, P
core   +1 more source

An Evolutionary Strategy for Spawning Habitat Selection by Pseudopungtungia tenuicorpa

open access: yesAnimals, 2023
In this study, we hypothesized that the limited geographical distribution of Pseudopungtungia tenuicorpa in South Korea is closely related to the local abundance of their preferred spawning habitats. Eggs of P. tenuicorpa were most frequently observed in
Jong-Yun Choi, Seong-Ki Kim
doaj   +1 more source

PECULIARITIES OF THE SURFACE FLAW DETECTION BY ELASTIC WAVES SIMULATED BY PULSE-LASER RADIATION

open access: yesПриборы и методы измерений, 2016
Laser pulse simulation of the surface waves and its receiving by contact piezoelectric probes is perspective direction to detect surface defects. The aim of this work was to determine optimal conditions for detection of the real fatigue cracks of nearly ...
А. R. Bаеv   +3 more
doaj   +1 more source

Influence of corrosion and creep on intergranular fatigue crack path in 2XXX aluminium alloys [PDF]

open access: yes, 2010
In this paper, two examples of the influence of time-dependent processes on crack path in two 2XXX aluminium alloys are presented. The first example is concerned with corrosion–fatigue crack growth resistance of a 2024 T351 alloy cracked in the S–L ...
Hénaff, Gilbert   +2 more
core   +3 more sources

Multi-cracks Modeling in Reflective Cracking [PDF]

open access: yes, 2012
Reflective cracking is a major concern for engineers facing the problem of road maintenance and rehabilitation. The problem appears due to the presence of cracks in the old pavement layers that propagate into the pavement overlay layer when traffic load passes over the cracks and due to the temperature variation. The stress concentration in the overlay
Pais, Jorge   +2 more
openaire   +3 more sources

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