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Online since: April 2015
Authors: Hazizan Md. Akil, A.A. Sinar, Zainuddin Firuz, M.A. Nur Azni, H.A. Sahrim
The geometry and component properties significantly affected the failure modes of sandwich beams.
Mechanical, impact and thermal properties of polymers can be significantly enhanced by the incorporation of nanoclay particles in polymer matrix.
The mechanical properties of the foam materials depend on several factors, such as foam density, method of manufacture, cell structure and temperature.
Tensile, compression and three/four point bending tests have been conducted to obtain the mechanical properties such as strength, modulus of elasticity and hardness.
In recent years, the finite element analysis micro-mechanical models were used in order to study the effect of damage of cellular structure on the compression properties.
Online since: February 2019
Authors: A.A. Belov, O.O. Shichalin, Evgenii K. Papynov
They undergo devitrification occurring under effect of external factors, which results in the decrease of their hydrolytic stability and the radionuclide release.
A unique set of physical–chemical, radiation–physical, and mechanical properties of ceramic radionuclide matrices fabricated in accordance with the SPS technology determines their excellent functioning characteristics, which was demonstrated in [10,11] and other works.
It was determined that high-temperature phase transitions during SPS sintering of NaA zeolite affected physical–mechanical properties of the fabricated samples of ceramic and glass ceramic matrices.
It has been revealed that the required physical–chemical and physical–mechanical matrix properties are achieved as a result of solid-phase changes during the SPS treatment induced by phase transitions, mechanical and deformation impacts, and thermal effects.
Logunov, Sources of gamma radiation with cesium-137: properties, production, application., «PO «Mayak», Ozersk, 2013 [in Russian]
Online since: November 2005
Authors: Hee Jun Jung, Song Chun Choi, Sang In Han, Ji Yoon Kim
RBI is an integrated methodology that factors risk into inspection and maintenance decision making.
Likelihood category is composed of equipment, damage, inspection, condition, process, and design factors, which are indicated in grade 1, 2, 3, 4, or 5.
The consequence category is composed of chemical, quantity, auto-ignition, credit, state, and pressure factors while the health consequence category toxic quantity, dispersibility, credit and population factors, each of which is indicated in grade A, B, C, D, or E.
An adjusted failure frequency is calculated by multiplying the generic failure frequency by the two modification factors [1].
With remarkably high corrosion rate of 24.4 mpy measured as general corrosion, there was great risk factors due to thinning.
Online since: September 2013
Authors: Bing Hai Lv, Hong Bo Ji, Fen Fen Zhou, Ping Zhao, Wei Gang Guo, Yan Peng
Zirconia ceramic widely applied in the fields of electronics, instrumentations and mechanical manufacture for its good physical and chemical properties.
These applications originate from the physical and chemical properties of Zirconia ceramic [6]; consist of thermal stability, chemical resistance, mechanical characteristics and ionic conductivity [7].
Fig2 shows the original Zirconia ceramic sample, and Table 1 lists the mainly physical properties of Zirconia ceramic, Table 2 lists the experiment condition in this study.
Yoshida, Properties of Ni/YSZ cermet as anode for SOFC, Solid State Ionics 3/4(2000): 253–260
The Properties, Use and Prospect of Zirconium Dioxide, Inorganic Chemicals Industry, 32/1(2000): 18-20
Online since: April 2014
Authors: Alicia Mašlejová, Jaroslav Duška, Lucia Hrabčáková
Metallographic analysis should determine the imperfection origin and decide if copper presence was the primary factor of it.
They didn’t affect the primary quality of the material but sheet handling was dangerous, Figs. 1 - 2.
Proposals for the next treatment Blast cleaning of affected surface was proposed.
This could be done because the mechanical properties of the material didn’t change radically.
Online since: December 2010
Authors: Khair Al Deen Isam Bsisu
Introduction The 6-story R.C. office building under consideration had a plan as shown Fig.1, the area affected by cracking is shown in the circle, the shape and size of the cracks is shown in Fig.2.
Fig. 3 Column reinforcement buckled before the connection with the footing Concrete Properties: Six concrete cores were taken from different reinforced concrete columns, footings and beams in the building.
The results of the physical and mechanical properties of the cores are presented in Tables no. 1 and 2, respectively.
Table 1: Physical Properties of Cores Core No. and Location Length, L (mm) Dia.
Beam/ Ground Floor 114.8 63.3 1.757 746.30 2066 Table 2: Mechanical Properties of Cores Core No. and Location Core Strength (N/mm2) Correction Factor Corr.
Online since: February 2007
Authors: Mihály Réger, Balázs Verő, Zsolt Csepeli, Péter Pinke
As a result of the individual factors and their combinations a lot of production technology routes are feasible.
Although the number of affecting parameters is not so large, the determination of important parameters' values (intercritical temperature, cooling rate, temperature and duration of quasi isothermal stage) needs numerous pre-experiments before industrial production.
The paper describes a new simple method which can be applied for mapping the effect of technological parameters on the microstructural properties.
In addition to the increase of technological reliability the model can help in the prediction of structural and mechanical properties.
Taking into account the wide variety of chemical compositions of these types of steels and the wide range of affecting parameters, the developed method had to be as simple as possible.
Online since: February 2011
Authors: Yu Liu, Li Jun Wang, Dong Po Wang
Ultrasonic surface rolling processing (USRP) is a surface nanocrystallization method developed recently, which can bring metal surface with superior properties.
Majzoobi et al. and Shivpuri Rajiv et al. have simulated the multi-shots case and discussed the influencing factors on peening residual stress [6,7].
Material Properties and Model Verification. 40Cr steel, which is often used as shaft material, is adopted for numerical simulation.
Material properties for 40Cr are: ρ (density) = 7820 kg/m3, E (elasticity modulus) = 210 GPa and υ (Poisson’s ratio) = 0.3.
The spindle speed affects the impact density.
Online since: May 2012
Authors: Chao Qun Wu, N. Nakagawa, Shao Feng Zhou
The BLT converts electric energy into mechanical vibration which is scaled by a stepped horn.
The effect of temperature on the intensity of cavitation depends on the following two factors: one is gas solubility, the other is vapor pressure of the liquid.
The vapor pressure of water is unique factor which affects the intensity of cavitation.
When ultrasonic cavitation is employed to remove burrs from a part, cavitation bubbles collapse in the vicinity of the specimen which may cause the change of mechanical property (i.e., microhardness).
Manas etc., Influence of different factors on the output power transferred into medium by ultrasonic.
Online since: September 2013
Authors: Song Lin, Ran Zhang, Zhuang Ma, Chuan Yang Liu
The major factors influencing the biological treatment efficiency are temperature, moisture, oxygen content, C/N ratio, PH value, etc [6].
Shear Flow Fig. 1 Flow pattern of agitator The mechanical energy can be passed to the fluid when the blender is rotating.
The shaft power is the power to overcome the fluid resistance, excluding the power consumed by friction of mechanical transmission.
The selection of blender type is based on stirring purpose, kitchen waste properties, container volume, etc.
Define the operating environment and the physical properties of fluid.
Showing 17571 to 17580 of 25958 items