Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: May 2014
Authors: Somposh Sudajan, Kittipong Laloon
The physical and thermal properties of charcoal and factors affecting the testing unit’s performance, which were mixing ratios by weight of eucalyptus bark charcoal: cassava starch: water content (1: 0.10: 0.75, 1: 0.15: 0.75 and 1: 0.20: 0.75) and screw pressing speeds (90, 105, 120 and 135 rpm) were studied.
Moreover, the chemical properties of eucalyptus bark indicate that the proportions of salt exist in large quantities which have the effect of decreasing the efficiency and heat production in industry [2].
It was stated that mechanical and physical properties of charcoal briquettes were influenced by several parameters viz. die pressure, dwell time, charcoal particle size, binder type and water content.
The analysis of variance showed that the cassava starch (A) and screw press speed (B) significantly affected pressing capacity and properties of charcoal block, but screw press speed did not significantly affect heating value and utilization efficiency.
Muthukumarappan, Effect of DDGS, Moisture Content, and Screw Speed on Physical Properties of Extrudates in Single-Screw Extrusion, Cereal Chem Vol. 85(2), p. 132-139, 2008
Online since: October 2014
Authors: Lei Fang, Jian Wei Peng, Yong Wang, Qing Tian, De Hua Deng
Therefore, study of the dynamic mechanical properties of CA mortar, i.e. the effect of strain-rate on mechanical indexes) is urgently needed.
Consequently, study the dynamic mechanical properties of type II CA mortar is very important.
Currently, the dynamic mechanical properties study of CA mortar is not understand completely.
So the validity of SHPB experiment research on dynamic mechanical properties of CA mortar must be analyzed.
And the dynamic mechanical properties of CA mortar in different strain-rate were analyzed.
Online since: February 2026
Authors: Muktar Sinaga
Introduction Cooling technology using cooling water for homogeneous mixing properties has been applied for a long time.
Because it has good thermal properties, ice slurry is often used to increase cooling efficiency compared to water or other coolants.
The presence of substances in the mixture determines a number of properties for the coolant that will affect the thermal conductivity, with high viscosity where particles can increase the viscosity of the mixture, making it difficult to pump through the cooling system. [6].
Ice slurry is often considered a plastically-viscously stable rheological fluid, meaning that it exhibits plasticity properties with the ability to flow plastically without undergoing permanent deformation and viscosity properties that remain relatively constant.
The viscosity of ice slurry is affected by various factors, including solute concentration, ice fraction, and flow conditions [53].
Online since: May 2012
Authors: Hao Guo, Jing Nian Liu, Ya Li Liu, Xiao Peng Li
The efficiency of the pile may be affected by the above situation.
The pile’s settlement in the vertical direction is the main factor considered in this paper.
The materials’ properties of soil and pile are different, what’s more, the soil can not withstand tensile stress or the tensile performance is poor.
The properties of the pile and soil materials.
The properties of the pile and soil materials are showed in the Table 1 and Table 2.
Online since: May 2012
Authors: Wei Shao, Bin Lin
Freezing pressure and its influencing factors of deep clay layer in the Huainan mining area Wei Shao1 , Bin Lin2 1Huainan Coal Mine Survey and Design Institute, Huainan, Anhui Province,232001 2The School of Civil Engineering and Architecture, AnHui University of Science and Technology Anhui, Huainan 232001, Email: linbin8910@163.com Key words: deep calcareous clay, formation, freezing pressure, temperature Abstract: Gu Bei coal mine deep shaft freezing pressure of calcareous clay dynamic monitoring showed that the freezing pressure of the calcareous clay fastest grow in the first 2 weeks after the sidewall concrete pouring , freezing pressure has obvious direction .
According to Gu bei check of shaft hole of geologic histogram , Hefei Coal Design Institute sidewall structure design diagrams and the Gu bei permafrost physical and mechanical performance test and other data , two horizontal earth pressure monitoring .
Influence factors of freezing stress Research has shown that [1-2], Freezing pressure of the soil is mainly affected by the freeze wall deformation , soil properties , depth of frost heave on the wall refreezing thawed soil and soil water swelling the combined effect of the deformation and wall permafrost temperature and construction process and other factors,Laboratory test results show that [3], the less water-absorbent expansive calcareous clay, and under certain conditions and construction technology of soil, the thick layer of calcareous clay freezing pressure is mainly affected by the deformation of the frozen wall of frost heave and temperature control. 3.1 The influence of side wall temperature on the freezing pressure Found by the monitoring of the freeze sidewall temperature in different directions ,the temperature variation of the well to help is also showing a similar trend as the freezing pressure ( Figure 3) Temperature change also presents a similar freezing pressure
Comparison of Figure 1 and Figure 8 illustrates, shaft face rate freeze for floor pressure is affecting, freezing pressure of growth rate and the rate there is a positive correlation between floor. 3.3 Effects of frost-heaving force of freezing pressure Wall concrete hydration hot will led to part freeze wall melted, its back frozen Hou of frozen expansion force is constitute freeze pressure of a main part, due to in limited segment high of deep calcium stick soil in the, while its itself moisture and permeable sexual are lower, on the around phase p formation are is freeze State, so impossible has too more of free water on back frozen layer for water supply.
Online since: November 2011
Authors: V. Molokanov, Valentina Zhukova, A.N. Shalygin, P. Umnov, Arcady Zhukov
Studies of magnetic properties of amorphous microwires produced by combination of by quenching, glass removal and drawing techniques V.
Ferromagnetic magnetic without glass coating with good magnetic and mechanical properties and GMI effect have been obtained.
On the other hand the demagnetizing factor affects the domain structure and magnetic properties when the geometric ratio of microwire diameter to its longitude becomes low enough [11].
DZ/Z (H) dependences of Co69Fe4Cr4Si12B11 amorphous microwires subjected to different processing measured at 10 MHz Resuming, aforementioned studies allow us to obtain ferromagnetic magnetic without glass coating with good magnetic and mechanical properties and GMI effect and to tailor the microwire magnetic properties for its application in magnetic sensors through the selection of adequate thermal treatment conditions.
Finally after adequate conditions of annealing good magnetic and mechanical properties and GMI effect have been obtained.
Online since: January 2013
Authors: Zhong Jin Wang, Jian Guang Liu, Tie Jun Gao, Yao Wang
Experiment Scheme And Device The device sketch of the viscous pressure bugling test is shown in Fig.1.The aluminum alloy sheet used in experiments is 2024, and its mechanical properties are listed in Table 1.
The mechanical properties of the three different viscous medium are shown in Fig.2.The bulging heights of specimens are recorded by the displacement sensor.
Table1 Mechanical properties of 2024 sheet (MPa) (MPa) (%) E (GPa) 244 425 10 68 Fig. 1 The device sketch of viscous Fig. 2 Mechanical properties of the three pressure bulging test different viscous medium Results And Analysis The viscous pressure bulging test using three kinds of viscous medium was carried out.
The typical bulging specimens in the different medium conditions Forming Process Finite Element Analysis Since the viscous pressure bulging process is a coupled deformation process, in which the viscous medium interacts with so many kinds of factors, such as the sheet, the die and so on, it is difficult to obtain the variation of the sheet shape and viscous pressure field by analytic method.
The properties of viscous medium and the molecular weight can affect the formability of aluminum alloy sheets.
Online since: October 2017
Authors: Ritesh Joshi, Gopal Zinzala, Nishit Nirmal, Kishan Fuse
The parameters affecting EDM significantly are peak current, peak voltage, Ton, Toff, electrode material, dielectric etc.
The chemical composition of Ti-6Al-4V(wt%) include: Ti,89.64; Al,6.08; V,4.02; Fe,0.22; O2,0.18; others,0.04 and mechanical properties are shown in Table 1.
Mechanical properties of Ti-6Al-4V Hardness (HRC) 36 Melting temperature (°C) 1649 ± 15 Density (g/cm3) 4.42 Elastic modulus (GPa) 114 Tensile strength (MPa) 897 Thermal conductivity (W/m k) 7.2 Electrical resistivity (μΩ·cm) 178 Table 2.
- From the grey relational analysis, it is reveal that peak current is most prominent factor affecting EDM of Ti-6Al-4V.
- ANOVA results of grey grade reveals that peak current is prominent factor affecting EDM.
Online since: April 2014
Authors: Seong Tae Yi, Min Kyoung Kwak, Jae Sung Mun
As a result, to obtain the exact temperature history, it is necessary to examine thermal properties of the concrete.
Meanwhile, because several well-known factors, such as roughness of concrete surface, materials of form, and flow characteristics influence on the heat transfer coefficient, it is not easy to simply define the coefficient.
Branco et al. [4] and Mendes [5] recommended that influencing factors, which affects the coefficient, should be verified using experimental results and proposed a prediction model as a function of concrete surface’s roughness and wind velocity.
Table 1 shows physical properties of used materials.
In this study, two different mixture proportions were used to investigate if the heat transfer coefficient was independent of concrete properties.
Online since: November 2023
Authors: Antti Järvenpää, Matias Jaskari, Timo Rautio, Miguel Araya, Haider Ali Bhatti
Among the critical factors influencing the quality of the final product, microstructure plays a crucial role, as it directly impacts the mechanical properties.
Factors such as scanning speed, direction, and part length contribute to the level of residual stresses.
The Effect of Heat Treatment on The Mechanical Properties of Ti6Al4V.
It is evident that the HT has a major role on the mechanical properties of the Ti6Al4V material.
Microstructure, mechanical properties, impact toughness and fatigue life of the material were investigated accordingly.
Showing 7781 to 7790 of 26166 items