Results 111 to 120 of about 31,666 (162)

A nuclear tester for micro-hardness measurement

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2012
Abstract The dependence of alpha particle track diameter on the hardness of a diallyl maleate–allyl diglycol carbonate (DAM–ADC) nuclear track detector is investigated. When etched under optimum conditions, a relationship between track diameter and hardness is determined which is found to be linear.
A.H. Ashry, H. El-Sammane, M. Abou-leila, W. Arafa, Ahmad Umar, A.M. Abdalla, T. Tsuruta   +6 more
openaire   +1 more source

Micro-Hardness Test of Cross-Linking LLDPE

Advanced Materials Research, 2017
The presented article deals with the research of micro-mechanical properties in the surface layer of modified linear polyethylene (LLDPE). These micro-mechanical properties were measured by the Depth Sensing Indentation - DSI method on samples which were non-irradiated and irradiated by different doses of the β - radiation (0, 66, 132 and 198 kGy ...
Martin Ovsik, David Manas, Miroslav Manas, Michal Stanek, Vaclav Janostik   +4 more
openaire   +1 more source

Modeling and Analysis of Micro Hard Disk Drives

The Fourth International Conference on Control and Automation 2003 ICCA Final Program and Book of Abstracts ICCA-03, 2003
This paper is to analyze effect of the data flex cable and friction in the actuator rotary pivot bearing on performance of head positioning servo systems in micro hard disk drives (HDD). The micro HDD is one of trends in the disk drive industry, which can be used by portable devices such as digital cameras.
null Kemao Peng, null Guoyang Cheng, B.M. Chen, T.H. Lee   +3 more
openaire   +1 more source

Micro-Hardness of PA6 Influenced by Beta Irradiation

Applied Mechanics and Materials, 2015
In this paper, the effect of the electron beam irradiation on the indentation hardness, indentation modulus and indentation creep have been studied by means of the Depth sensing indentation (DSI). Cross-linking is a process in which polymer chains are associated through chemical bonds.
Martin Ovsik, David Manas, Miroslav Manas, Michal Stanek, Martin Reznicek, Petr Kratky   +5 more
openaire   +1 more source

Ultra-micro-hardness of organic and inorganic crystals

Journal of Physics D: Applied Physics, 1993
The measurement of ultra-micro-hardness is an attempt to find a physical property which can be used for the description of the so-called abrasion resistance of crystals produced in chemical engineering equipment. Such approaches are necessary in order to compare calculations of the secondary nucleation rates for different substances.
J Ulrich, M Kruse
openaire   +1 more source

MICRO-HARDNESS MEASUREMENT OF STONE SAMPLES

2017
Stone hardness is an important factor which strongly affects machinability and overall quality of the stone machining processes. Identification of such heterogeneous materials in order to establish matching cutting parameters often requires a large number of micro-hardness measurements to be taken.
Klaić, Miho, Murat, Zrinka, Čatlak, Zlatko   +2 more
openaire   +2 more sources

Long-term surface micro-hardness of resin-modified glass ionomers

Journal of Dentistry, 1998
The presence of a resin component in resin-modified glass-ionomer cements (RMGICs) results in considerable water sorption which may affect the surface hardness of the materials. This study investigated the effect of long-term storage in aqueous solutions on the surface hardness of RMGICs.The surface micro-hardness of four RMGICs stored in either ...
W, Kanchanavasita, H M, Anstice, G J, Pearson   +2 more
openaire   +2 more sources

Micro-hardness of neutron irradiated uranium dioxide at room temperature.

Journal of Nuclear Science and Technology, 1983
Knoop hardness tests were performed on irradiated UO2 in the fission range of 1014–1018 fiss./cm3. Hardness values were obtained as a function of applied load (25–1,000 g). Three different regions of load dependence on hardness [work hardening or plastic (25–70 g), plateau (70–100 g) and crack formation (over 100 g) regions] were observed in a similar ...
Sung Sik KIM, Tomoo KIRIHARA
openaire   +1 more source

Micro-hardness measurements on single haversian systems in bone

Experientia, 1954
Mit Hilfe von weichen Rontgenstrahlen wurde die Mineralsalzverteilung uber den Querschnitt des menschlichen Femur registriert. Mittels eines Mikroharteprufers wurden die Orte hohen, mittleren und niedrigen Mineralsalzgehaltes gepruft. Es ergab sich eine gute Ubereinstimmung zwischen dem Grad der Mineralisierung und der Harte des Knochens.
openaire   +2 more sources

Effect of pressure and light curing of composite micro hardness.

Journal of biological regulators and homeostatic agents, 2020
The aim of this study is to evaluate the micro hardness Vickers of a composite micro hybrid polymerized under constant pressure. Twelve experimental samples were made equally divided into two groups: an experimental group and a control. Enamel plus HRi (Micerium) microbiotic composite resin, UD3 colour, was inserted into a syringe heater (ENA HEAT ...
Campanella V., Gallusi G., Di Taranto V., Cugini C., Nardi R., Mea A., Marzo G., Libonati A.   +7 more
openaire   +2 more sources