Results 41 to 50 of about 140,919 (361)

The Measurement of Surface Hardness of Mineral Trioxide Aggregate Material (MTA) using Two Techniques of Condensation. [PDF]

Al-Rafidain Dental Journal, 2008
Aims: This in vitro study was conducted to exam the effect of condensation technique on surface hardness of MTA. Materials and Methods: In this study, 20 acrylic blocks were used.
Maha A. AlMurad
doaj   +1 more source

Assessment of Micro-Hardness, Degree of Conversion, and Flexural Strength for Single-Shade Universal Resin Composites

Polymers, 2022
Single-shade universal resin composites (SsURC) are preferred in clinical practice to reduce time for shade selection and obtain good esthetic results. In this study, the static mechanical properties of seven new SsURCs were investigated, their spectral ...
P. Yılmaz Atalı, Bengü Doğu Kaya, Aybike Manav Özen, B. Tarçın, A. A. Şenol, Ezgi Tüter Bayraktar, B. Korkut, Gülçin Bilgin Göçmen, D. Tağtekin, C. Türkmen   +9 more
semanticscholar   +1 more source

Surface Roughness Effect on Microhardness Measurements

Tribology in Industry
Micro-Vickers hardness measurements are essential for evaluating micro-scale material hardness, providing insights into surface properties and material strength. However, many factors can influence the precision of hardness measurements.
Raimonds Sirants, Janis Lungevics
doaj   +1 more source

Chemical analysis and Vickers hardness of orthodontic mini-implants

Brazilian Journal of Oral Sciences, 2015
Orthodontic mini-implants are used in clinical practice to provide efficient and aesthetically-pleasing anchorage. Aim: To evaluate the hardness (Vickers hardness) and chemical composition of miniimplant titanium alloys from five commercial brands ...
Christiane Cavalcante Feitoza, Guilherme José Pimentel Lopes de Oliveira, Rafael Leonardo Xediek Consani, Eloisa Marcantonio Boeck, Karina Eiras Dela Coleta Pizzol, Nadia Lunardi   +5 more
doaj   +1 more source

Mechanical Assessment of CAD/CAM Fabricated Hybrid Ceramics: An In Vitro Study

Applied Sciences
The current study aimed to compare the mechanical properties of CAD/CAM fabricated hybrid ceramic restorative materials. The current study assessed the mechanical properties of additively and subtractively manufactured CAD/CAM fabricated hybrid ceramic ...
Khalid K. Alanazi, Abdulaziz A. Alzaid, Ali A. Elkaffas, Sarah A. Bukhari, Ramzi O. Althubaitiy, Khalid A. Alfaifi, Ibrahim M. Alfahdi, Hussain A. Alqahtani   +7 more
doaj   +1 more source

Microstructure Characteristics in the Interface Zone of Gray Cast Iron Solid State Bonds [PDF]

Engineering and Technology Journal, 2014
In the present study, gray cast iron was diffusion bonded under air atmosphere and in inert environment (argon). In air it was carried out at the temperatures of 700, 750, 800, 850, and 900 °C under UN pressing load of 1 and 2 ton for 15, 30 and 60min ...
Awfa Abdul-Rassol Abdullah, Rasha Rahman Rawhdan   +1 more
doaj   +1 more source

Influence of pre-deformation on the precipitation of Cu-rich clusters in RPV model steel

MATEC Web of Conferences, 2018
The effect of pre-deformation on the precipitation process of Cu-rich clusters in reactor pressure vessels (RPV) model steel is studied. In this research, Fe-1.16wt%Cu binary alloy is selected as RPV model steel to simulate the precipitation process of ...
Tan Zhaozhao, Li Chengliang, Shu Guogang, Liu Wei, Li Qiulin   +4 more
doaj   +1 more source

Hardness relationship between eNM3A10 and conventional hardness scales

Measurement: Sensors, 2021
Small ball rebound hardness eNM3A10 is a next-generation rebound hardness test with features not existing in conventional rebound hardness tests: reduced mass effect of hardness and satisfying the similarity rule of hardness (Minimum thickness of steel ...
Takashi Yamamoto, Masayuki Yamamoto, Kensuke Miyahara   +2 more
doaj   +1 more source

Thermal-Mechanical Properties of Polyurethane-Clay Shape Memory Polymer Nanocomposites [PDF]

, 2010
Shape memory nanocomposites of polyurethane (PU)-clay were fabricated by melt mixing of PU and nano-clay. Based on nano-indentation and microhardness tests, the strength of the nanocomposites increased dramatically as a function of clay content, which is
Chen, Zhen Guo,, Fu, Yong Qing,, Hosson, Jeff T.M. De,, Huang, Wei Min,, Kraft, Arno,, Pei, Yu Tao,, Reuben, R.L.,, Xu, Bin,   +7 more
core   +5 more sources

Investigating the correlation between Nanoindentation and Vickers hardness of Ti6Al4V, pure copper and AISI316 stainless steel

Wasit Journal of Engineering Sciences
Nano-indentation test is the most popular hardness testing method because it can correlate to other materials' mechanical properties and is used in a narrow area or for materials with plastic deformation resistance that Vickers hardness cannot represent.
Ammar Dawood Ghali Al-Rubaye, Muhaed Sadiq Alali, Righdan Mohsen Namus   +2 more
doaj   +1 more source