Results 271 to 280 of about 399,302 (324)

Conversion between Vickers hardness and nanohardness by correcting projected area with sink-in and pile-up effects

, 2020
The Vickers hardness test has been widely used for neutron-irradiated materials while nanoindentation for ion-irradiated materials. Comparing the Vickers hardness and nanohardness of the same materials quantitatively and establishing a correlation ...
Youping Lu, Yue Su, Wei Ge, Tengfei Yang, Zhanfeng Yan, Yugang Wang, S. Xia   +6 more
semanticscholar   +1 more source

Hardness measured with traditional Vickers and Martens hardness methods

Dental Materials, 2007
To determine the differences, if any, between hardness measured with traditional Vickers and Martens hardness test methods on denture teeth under 2, 10 and 50 N loads.Hardness of acrylic resin (VIV), composite resin (ORT) and porcelain (POR) denture tooth materials was measured using a traditional Vickers hardness (HV) method and Martens hardness (HM ...
Shahdad, SA, McCabe, JF, Bull, S, Rusby, S, Wassell, RW   +4 more
openaire   +3 more sources

Vickers hardness concept in the light of Vickers impression

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1974
Abstract Although Vicker's hardness equation is defined with reference to the total inclined area of the permanent impression, in reality, only the diagonals are measured for calculating hardness irrespective of the morphology of the impression. The occurrence of the diagonal in the Vicker's hardness equation (Hv=2W/d2.
openaire   +1 more source

Double-zigzag boron chain-enhanced Vickers hardness and manganese bilayers-induced high d-electron mobility in Mn3B4.

Physical Chemistry, Chemical Physics - PCCP, 2019
The D7b-type structure Mn3B4 was fabricated by high-temperature and high-pressure (HPHT) methods. Hardness examination yielded an asymptotic Vickers hardness of 16.3 GPa, which is much higher than that of Mn2B and MnB2.
Shuailing Ma, K. Bao, Q. Tao, Chunhong Xu, Xiaokang Feng, Xingbin Zhao, Yufei Ge, P. Zhu, T. Cui   +8 more
semanticscholar   +1 more source

Investigating the Effect of Different Surface Treatments on Vickers Hardness and Flexural Strength of Zirconium and Lithium Disilicate Ceramics.

Journal of Prosthodontics, 2018
PURPOSE To investigate the effect of different surface treatments on Vickers hardness and flexural strength of zirconia and lithium disilicate ceramics. MATERIALS AND METHODS 50 zirconia and 50 lithium disilicate ceramic specimens were used.
A. Ozdogan, Zeynep Yeşil Duymuş
semanticscholar   +1 more source

Indentation Image Analysis for Vickers Hardness Testing

International Conference on Electrical Engineering, Computing Science and Automatic Control, 2018
The paper presents a novel algorithm for detection and measurement of indentations in Vickers hardness testing images, within a specific case of applied research on material quality evaluation based on image processing.
S. Domínguez-Nicolás, P. Wiederhold
semanticscholar   +1 more source

Significant correlation of bone material strength index as measured by the OsteoProbe with Vickers and Rockwell hardness.

Review of Scientific Instruments, 2020
The bone material strength index (BMSi), as measured by the OsteoProbe, is significantly correlated with Vickers hardness and Rockwell (RW) hardness measurements on conventional materials.
Franklin S. Ly, Alexander Proctor, K. Hoffseth, Henry T. Y. Yang, P. Hansma   +4 more
semanticscholar   +1 more source

Effect of quantitative textural specifications on Vickers hardness of limestones

Bulletin of Engineering Geology and the Environment, 2023
Sasan Ghorbani, S. H. Hoseinie, E. Ghasemi, Taghi Sherizadeh   +3 more
semanticscholar   +1 more source

Prediction of Vickers hardness of amorphous alloys based on interpretable machine learning

Journal of Non-Crystalline Solids, 2023
Xiaowei Liu, Z. Long, Li Peng
semanticscholar   +1 more source

Comparison of Ultrasonic-Hardness-Tester Hardness and Micro-Vickers Hardness

Japanese Journal of Applied Physics, 2007
Examination methods of industrial hardnesses such as Vickers hardness and Rockwell hardness are used for the characteristic measurement of materials. These methods assume that the length of the plastic deformation is a reliable index of hardness. Since the indenters used in these methods produce deformation imprints and the methods themselves are ...
Ryoji Aoyagi, Kaoru Umezu
openaire   +1 more source