Results 1 to 10 of about 170,228,634 (252)

Remarks on a Bernstein-type operator of Aldaz, Kounchev and Render

Journal of Numerical Analysis and Approximation Theory, 2021
The Bernstein-type operator of Aldaz, Kounchev and Render (2009) is discussed. New direct results in terms of the classical second order modulus as well as in a modification following Marsden and Schoenberg are given.
Ana Maria Acu, Heiner Gonska, Margareta Heilmann   +2 more
doaj   +7 more sources

Tensile Finite Element Simulation of Q345 Bridge Steel with Strong Corrosion Based on J-C Model [PDF]

Zhengzhou Daxue xuebao. Gongxue ban, 2021
In order to study the variation law of stress flow of bridge steel Q345 with strong acid corrosion, 18 Q345 bridge steel specimens were immersed in 36% industrial hydrochloric acid for 0, 1, 4, 12, 48 and 72 h, respectively. The engineering stress-strain
Zhang Hao, Qiao Wenjing, Yang Fan, Zhu Haoyun   +3 more
doaj   +1 more source

Internal pressure driven finite element model of a single pulmonary acinus [PDF]

MATEC Web of Conferences, 2021
A computer simulated, poroelastic, hyperelastic model was developed to replicate the pressure-volume response of a single pulmonary acinus (15th branch of the respiratory tree and daughter branches) with air flow at its core.
Campbell James, Siddiqui Salman, Gill Simon, Tsamis Alkiviadis   +3 more
doaj   +1 more source

Effects of powder compression and laser re-melting on the microstructure and mechanical properties of additively manufactured parts in laser-powder bed fusion

Results in Materials, 2022
Achieving good surface profile and low levels of porosity are prime challenges in the Laser-Powder Bed Fusion (L-PBF) additive manufacturing technique. In order to optimise these properties, post-processing is often required.
Muhannad Ahmed Obeidi, Alex Conway, Andre Mussatto, Merve Nur Dogu, Sithara P. Sreenilayam, Hasan Ayub, Inam Ul Ahad, Dermot Brabazon   +7 more
doaj   +1 more source

Molecular dynamics simulations of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) and TKX-50-based PBXs with four energetic binders

e-Polymers, 2023
Four energetic binders, polyglycidyl nitrate (PGN), poly(3-nitratomethyl-3-methyloxetane) (PNIMMO), poly(bis(azidomethyl)oxetane) (PBAMO), and glycidyl azide polymer (GAP) were, respectively, mixed with dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate ...
Niu Hu, Xing Yan, Chen Shusen, Jin Shaohua, Li Lijie   +4 more
doaj   +1 more source

Influence of the carburization time on the structural and mechanical properties of XC20 steel

Materials Research Express, 2021
This study focuses on the effect of carburization time on the structural and mechanical properties of low carbon XC20 mild steel (C. Wt.%
Saoudi Abdenour, Aissani Linda, Chahaoui Oualid, Bestandji Ali, Louafi Mohammed Salah, Djebaili Hamid, Chinesta Francisco   +6 more
doaj   +1 more source

Mechanical Properties and Torque/Force Generation of XP-Endo Shaper, Trunatomy, Spring Endo File, and Spring Endo Heated Finish File, Part 1

Applied Sciences, 2022
We evaluated the mechanical properties and torque/force generated during canal shaping by four NiTi files with innovative designs. Each of the 52 TruNatomy Prime, XP-endo Shaper, Spring Endo files with unheated finish (Spring Endo), and Spring Endo files
Soram Oh, Bong-Ki Jeon, Seok Woo Chang
doaj   +1 more source

New methodology of dynamical material response of dissimilar FSWed Al alloy joint under high strain rate laser shock loading

Materials & Design, 2022
This paper presents an innovative methodology of material characterization under high strain rate (order of 107s-1) laser shock loading coupled with microstructural and mechanical material features.
Mohammad Ayad, Lucas Lapostolle, Alexandre Rondepierre, Corentin Le Bras, Selen Ünaldi, Črtomir Donik, Damjan Klobčar, Laurent Berthe, Uroš Trdan   +8 more
doaj   +1 more source

Fracture Resistance of Functionally Graded Three-unit Fixed Partial Denture with Titanium Dioxide and Silica Nanoparticles: An In Vitro Study [PDF]

International Journal of Prosthodontics and Restorative Dentistry, 2023
Purpose: The objective of this study was to assess the fracture resistance of functionally graded monolithic zirconia with different nanoparticles in three-unit fixed dental prostheses (FDPs) after undergoing thermal and mechanical aging.
Aditi A Kanitkar, Paresh V Gandhi, Ajay V Sabane, Vijaysingh More, Aneesh S Kanitkar, Rajashree Jadhav   +5 more
doaj   +1 more source

Exact Solutions for Torsion and Warping of Axial-Loaded Beam-Columns Based on Matrix Stiffness Method

Nanomaterials, 2022
The typically-used element torsional stiffness GJ/L (where G is the shear modulus, J the St. Venant torsion constant, and L the element length) may severely underestimate the torsional stiffness of thin-walled nanostructural members, due to neglecting ...
Wen-Hao Pan, Chuan-Hao Zhao, Yuan Tian, Kai-Qi Lin   +3 more
doaj   +1 more source