Results 231 to 240 of about 22,588 (266)

(5th Far-East Conference on Nondestructive Testing,p419-p425)The Measurement of Contact Force between Bulb Spacer and Glass Neck for CRT Electron Gun

, 2014
J. C. Lee, M. Chang, C. N. Mo, J. S. Lin, M. J. Huang   +4 more
core  

Fatigue Crack Modeling of Railheads Using a Nonlinear Cohesive Zone Model

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT Subsurface fatigue crack growth within railheads can be deleterious leading to catastrophic failures in rails. This study aims to model the fatigue crack growth originating at the subsurface level within railheads. Towards that end, a finite element modeling approach is utilized wherein complex crack growth is explicitly modeled using a ...
Santosh Reddy Kommidi, Hesam Mortazavi, Yong‐Rak Kim, David H. Allen   +3 more
wiley   +1 more source

Leveraging modified ex situ tomography data for segmentation of in situ synchrotron X‐ray computed tomography

Journal of Microscopy, EarlyView.
Abstract In situ synchrotron X‐ray computed tomography enables dynamic material studies. However, automated segmentation remains challenging due to complex imaging artefacts – like ring and cupping effects – and limited training data. We present a methodology for deep learning‐based segmentation by transforming high‐quality ex situ laboratory data to ...
Tristan Manchester, Adam Anders, Julio Spadotto, Hannah Eccleston, William Beavan, Hugues Arcis, Brian J. Connolly   +6 more
wiley   +1 more source

A Review of Microwave Thermography Nondestructive Testing and Evaluation. [PDF]

Sensors (Basel), 2017
Zhang H, Yang R, He Y, Foudazi A, Cheng L, Tian G.   +5 more
europepmc   +1 more source

Marginal gap of printed, milled, and heat‐pressed two‐piece polyetheretherketone abutments before and after thermal cycling, and their pull‐off bond strength after thermal cycling

Journal of Prosthodontics, EarlyView.
Abstract Purpose To evaluate the marginal gap of two‐piece polyetheretherketone (PEEK) abutments fabricated with different methods, before and after thermal cycling, while also focusing on their pull‐off bond strength. Materials and Methods A two‐piece abutment was virtually designed after digitizing a titanium‐base (Ti‐base) abutment.
Almira Ada Diken Türksayar, Burcu Kanpalta, Naime Bilinç Bulucu, Sandra Schulnig, Sebastian Spintzyk, Münir Demirel, Mustafa Borga Donmez   +6 more
wiley   +1 more source

A sparse reconstruction algorithm for ultrasonic images in nondestructive testing. [PDF]

Sensors (Basel), 2015
Guarneri GA, Pipa DR, Neves Junior F, de Arruda LV, Zibetti MV.   +4 more
europepmc   +1 more source

Effect of margin thickness and cement gap on the fabrication and fit accuracy of additively manufactured crowns in definitive resins with different filler content

Journal of Prosthodontics, EarlyView.
Abstract Purpose To evaluate how commercially available composite resins in varying filler content affect the fabrication and fit accuracy (trueness and precision) of additively manufactured (AM) definitive crowns with different margin thickness and cement gaps by comparing them to subtractively manufactured (SM) polymer‐infiltrated ceramic crowns ...
Mustafa Borga Dönmez, Gülce Çakmak, Çiğdem Kahveci, Amir H. Nejat, Burak Yilmaz, Pinar Altinci   +5 more
wiley   +1 more source

Effects of printing temperature and post‐curing duration on the dimensional reproducibility and fracture load of 3D‐printed dental prostheses: An exploratory study

Journal of Prosthodontics, EarlyView.
Abstract Purpose This in vitro study aimed to evaluate the effects of printing temperature and post‐curing duration on the dimensional reproducibility and mechanical properties of three‐dimensional (3D)–printed dental prostheses. Materials and Methods Photopolymer specimens were fabricated using a stereolithographic 3D printer at two temperatures: room
Ji‐Min Lee, KeunBaDa Son, Kyu‐Bok Lee   +2 more
wiley   +1 more source

Surface properties and biofilm formation of a manufacturer‐reinforced, nanographene‐modified pre‐polymerized CAD‐CAM polymethylmethacrylate denture base material: An in vitro study

Journal of Prosthodontics, EarlyView.
Abstract Purpose To evaluate the surface roughness, hydrophobicity, and Candida albicans biofilm formation of three denture base materials, including two computer‐aided design and computer‐aided manufacturing (CAD‐CAM) polymethylmethacrylate (PMMA) resins and one conventional heat‐polymerized PMMA, before and after thermocycling (TC).
Gülce Çakmak, Pedro Molinero‐Mourelle, Seyed Ali Mosaddad, Sara Farjoud, Deniz Yılmaz, Sigrun Eick, Martin Schimmel, Burak Yilmaz   +7 more
wiley   +1 more source

Heat‐evolved coral photosymbionts exhibit dampened stress responses across distinct physiological contexts

New Phytologist, EarlyView.
Summary Experimental evolution under elevated temperatures has generated heat‐evolved (HE) strains of Symbiodiniaceae that enhance coral bleaching tolerance. However, the biomolecular mechanisms underlying this resilience remain poorly understood. We conducted a laboratory heat‐stress experiment and applied synchrotron‐based Fourier transform infrared (
Bede G. Johnston, Madeline R. Garing, Annaleise R. Klein, Wing Yan Chan, Matthew R. Nitschke, Madeleine J. H. van Oppen   +5 more
wiley   +1 more source