Results 11 to 20 of about 993,746 (310)

Role of MRI for detecting micro cracks in teeth [PDF]

open access: yesDentomaxillofacial Radiology, 2016
To evaluate the limit of tooth crack width visualization by two MRI pulse sequences in comparison with CBCT.Two extracted human teeth with known crack locations and dimensions, as determined by reference standard microCT, were selected for experimental imaging.
Djaudat, Idiyatullin   +3 more
openaire   +2 more sources

Configurational forces in a micro‐cracked body [PDF]

open access: yesPAMM, 2007
AbstractA framework to model micro‐cracked bodies based on the theory of continua with microstructure is presented: assuming a crack embedded in each material element, a field is considered characterising size and orientation of the crack, in addition to the usual placement in the Euclidian space.
Malika Bongué Boma, Maurizio Brocato
openaire   +1 more source

Liquation and post-weld heat treatment cracking in Rene 80 laser repair welds [PDF]

open access: yes, 2012
An extensive experimental study on a nickel-based superalloy, Rene 80 using autogenous laser welding has been undertaken to determine the effect of the process parameters and weld bead geometry on cracking in the as-welded and post- weld heat treated ...
Colegrove, Paul A.   +7 more
core   +1 more source

An investigation into cracking in nickel-base superalloy repair welds [PDF]

open access: yes, 2010
The nickel-base superalloy Rene 80 is considered very susceptible to liquation and strain-age cracking. Material in the solutionised condition is welded using the Cold Metal Transfer, or CMT process (with ductile filler alloy) and autogenously using a
Colegrove, Paul A.   +3 more
core   +1 more source

A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel [PDF]

open access: yes, 2013
Intergranular stress corrosion cracking (IGSCC) is a fracture mechanism in sensitised austenitic stainless steels exposed to critical environments where the intergranular cracks extends along the network of connected susceptible grain boundaries.
Rahimi, S   +4 more
core   +1 more source

A Fracture Mechanics-based Method for Prediction of Cracking of Circular and Elliptical Concrete Rings under Restrained Shrinkage [PDF]

open access: yes, 2014
This article has been made available through the Brunel Open Access Publishing Fund.A new experimental method, utilizing elliptical ring specimens, is developed for assessing the likelihood of cracking and cracking age of concrete subject to restrained ...
Dong, W   +5 more
core   +1 more source

On post-weld heat treatment cracking in tig welded superalloy ATI 718Plus

open access: yesResults in Physics, 2016
The susceptibility of heat affected zone (HAZ) to cracking in Tungsten Inert Gas (TIG) welded Allvac 718Plus superalloy during post-weld heat treatment (PWHT) was studied.
G. Asala, O.A. Ojo
doaj   +1 more source

Numerical Simulation of Ice Fractures Process of the Yellow River Based on Disk Specimen

open access: yesCrystals, 2020
To study the influence of the changes in crystals on a micro scale as well as their effect on the macro mechanical properties of river ice and to mitigate the limitation of the objective conditions in a physical examination of river ice, it is necessary ...
Juan Wang   +4 more
doaj   +1 more source

Optimal operation of tubular reactors for naphtha cracking by numerical simulation [PDF]

open access: yes, 2009
Process gas temperature profile and steam-to-hydrocarbon ratio in the feed have important impact on product yields and coking rate in tubular reactors for naphtha cracking.
G.‐Y. Gao   +8 more
core   +1 more source

Improvement of stress-relief cracking resistance in coarse-grained heat-affected zone of T23 steel by refining sub-structure through second thermal cycle

open access: yesJournal of Materials Research and Technology, 2020
Simulated coarse-grained heat-affected zone (CGHAZ), second reheated CGHAZ (UA-CGHAZ), super-critical reheated CGHAZ (SCR-CGHAZ) and inter-critical CGHAZ (ICR-CGHAZ) of T23 steel were produced via thermal simulation of welding. Their corresponding stress-
Yong Li, Jiaqing Wang, Xue Wang
doaj   +1 more source

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