Results 21 to 30 of about 84,923 (263)

Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental Restorations [PDF]

International Journal of Dentistry, 2013
Introduction. The mechanical strength and the surface hardness of commercially available yttrium-doped zirconia were investigated. Furthermore, a comparative study of eight different ceramic veneers, to be used for the production of two-layered all-ceramic restorative systems, was carried out.Materials and Methods. Four types of zirconia specimens were
Marrelli M, MALETTA, Carmine, Inchingolo F, ALFANO, Marco, Tatullo M.   +4 more
openaire   +6 more sources

Three-point bending tests-Part I: Mathematical study and asymptotic analysis

Mathematical Methods in the Applied Sciences, 2011
The goal of this work is to study the static behaviour of a three-dimensional elastic beam when is subjected to a three-point bending test. In the rst part, under suitable compatibility conditions on the applied forces and on the geometry of the beam, we will prove the existence of a unique solution for the associated contact elastic problem; these ...
Quintela Estévez, Peregrina, Sánchez Rúa, María Teresa   +1 more
openaire   +3 more sources

Mechanical and frictional properties of aesthetic orthodontic wires obtained by hard chrome carbide plating

Journal of Dental Sciences, 2018
Background/purpose: Although aesthetic wire coating has been increasing in demand, it has problems that changes in mechanical properties and increase in frictional force.
Takashi Usui, Toshio Iwata, Shinjiro Miyake, Takero Otsuka, So Koizumi, Nobukazu Shirakawa, Toshitsugu Kawata   +6 more
doaj   +1 more source

Effect of the Number of CFRP Prepregs and Roughness at the Bonding Area on the Spring-Back and Flexural Strength of Hybrid Composites of CFRP Combined with CR980

Metals, 2019
Hybrid composites in which a CR980 metal plate was bonded on carbon-fiber-reinforced plastic (CFRP) were prepared. Hybrid composites were two types of CFRP/CR980 hybrid composites and CR980/CFRP hybrid composites.
Ji Hoon Hwang, Chul Kyu Jin, Hyung Yoon Seo, Chung Gil Kang   +3 more
doaj   +1 more source

Mechanical properties of polymer fibre reinforced concrete in the light of various standards [PDF]

Archives of Civil Engineering
The article presents the results of a detailed experimental campaign including a compressive strength test, three- and four-point bending test (3PBT and 4PBT, respectively) of polymer fiber reinforced concrete with the addition of metakaolin.
Julia Blazy, Łukasz Drobiec, Paweł Wolka   +2 more
doaj   +1 more source

Finite element model of bamboo culm (Phyllostachys sp.) and its comparison to two experimental tests

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010
The main goal of the work was to build up a general parametric finite-element model of a bamboo culm in ANSYS computational system. Subsequently the model was compared to a experimental measurements of chosen mechanical properties – three point bending ...
Václav Sebera, Jan Tippner, Petr Horáček, Aleš Dejmal, Martin Beníček   +4 more
doaj   +1 more source

Comparison of behaviour of burnt beams models with effective and actual residual cross-sections in three point bending test

Acta Polytechnica CTU Proceedings, 2023
Glued laminated timber beams exposed to fire of a variable duration were tested in three point bending. Three types of model geometries taking into account the effect of burning were created. Each model was examined for five material data sets.
Lucie Keřková Kucíková, Michal Šejnoha, Tomáš Janda, Pavel Padevět   +3 more
doaj   +1 more source

Fabrication and Investigation of Mechanical Properties Aluminum Composite Foam Reinforced with Silicon Carbide Prticles [PDF]

فناوری در مهندسی هوافضا
Due to their cellular structure, metal foams have properties such as low density, strength to weight, and high energy absorption under compressive stresses.
Ali Alizadeh, Mohsen Heydari Beni, Mohammadreza Zahmatkesh, Mehdi Abdollahi azghan   +3 more
doaj   +1 more source

Acoustic Emission Characteristics and Damage Evolution Analysis of Sandstone under Three-Point Bending Test

Advances in Materials Science and Engineering, 2023
In order to study the prevention of roadway roof bending, sinking, and breaking and the prevention of dynamic disasters such as the appearance of rock bursts, three-point bending experiments of sandstone under different spans were carried out.
Tao Qin, Chen Jiang, Yanwei Duan, Yiwei Wang, Chao Ju   +4 more
doaj   +1 more source

Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending Test

Fracture and Structural Integrity, 2019
Experimental loading and FEM simulation-based approach at macroscale are utilized to investigate the failure mechanisms of Al2O3 ceramics. Experimental characterization of microstructure is carried out using SEM.
Mikhail Olegovich Eremin, Igor Smolin, Alexey Kulkov, Valentina Mikushina   +3 more
doaj   +3 more sources