Results 121 to 130 of about 360,909 (306)

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Freeze-Thaw Durability and Long-Term Performance Evaluation of Shotcrete in Cold Regions [PDF]

, 2017
This study’s aim was to evaluate the freeze-thaw durability of shotcrete in cold regions and predict its long-term performance. One benchmark mix design from the WSDOT was chosen to prepare samples for performance evaluation.
Qiao, Pizhong, Zhou, Zhidong
core  

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Evaluation of Fracture Resistance of Metal Mesh and Glass Fiber Reinforced Maxillary Denture Bases: An In Vitro Study [PDF]

International Journal of Prosthodontics and Restorative Dentistry
Purpose: The purpose of this study was to assess and compare the fracture resistance of maxillary denture bases reinforced with metal mesh and glass fiber mesh at various locations.
Mukesh K Goyal, Shweta Sharma, Geeta Paul, Isha Saxena, Madhav, Shalini Chauhan   +5 more
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Effect of Fiber-Reinforced Composite Placement Site on Fracture Resistance of Premolar Teeth: An in vitro Study

Clinical, Cosmetic and Investigational Dentistry
Raghad Tariq AlJarboua,1 Reem Ahmad Alshihry,1 Haya Othman Alkhaldi,1 Fadak Hussain Al Marar,1 Mohammed A Aljaffary,2 Mohammed L Almana,2 Abdulrahman A Balhaddad,3 Othman Alkhateeb2 1Internship Program, College of Dentistry, Imam Abdulrahman Bin Faisal ...
AlJarboua RT, Alshihry RA, Alkhaldi HO, Al Marar FH, Aljaffary MA, Almana ML, Balhaddad AA, Alkhateeb O   +7 more
doaj  

A Comparative Assessment of Fracture Resistance of Zirconia Crowns Prepared With Different Finish Line Designs – A In Vitro Study

Journal of Pharmacy and Bioallied Sciences
Introduction: The purpose of this work is to evaluate and contrast many finish line designs on monolithic zirconia crown fracture resistance. Materials and Methods: Four typhodont mandibular first molar teeth (Nissin TM) were acquired.
Jobin Joy, K Abhinav Mohan, Unni Pympallil, Cimmy Augustine, Lino Paul, Nirosha Vijayan   +5 more
doaj   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

The influence of cavity design for cusp coverage on fracture strength of weakened maxillary first premolars using two esthetic restorative systems (CAD/CAM hybrid ceramic and nanohybrid composite) (An in vitro study)

Journal of Baghdad College of Dentistry, 2015
Background: Maxillary first premolar with wide MOD cavity more susceptible to fracture. The aim of this study was to assess the influence of cavity design for cusp coverage on the fracture resistance of weakened maxillary first premolar restored with CAD/
Zainab S Jawad, Abdul Karim J Al-Azzawi   +1 more
doaj