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Online since: March 2012
Authors: Marian Zaborski, Marcin Masłowski
Cross-linking density and mechanical properties of the composites were also studied.
Moreover, different amount of magnetoactive fillers influence mechanical and magnetic properties of the vulcanizates.
The configuration and rigidity of the chain structures depend on several factors including the strength and distribution of the applied magnetic field [4].
There are numerous factors which can affect the manner in which an MRE will behave, for example, the elastomer matrix will have its own material properties of elastic modulus, density, etc.
Results and discussion Mechanical properties Table 1.
Online since: July 2013
Authors: Ling Yan Zhao, Kang Jiao, Wei Tang, He Xue
Limited experimental work also suggested the complicated material and mechanical property of the fusion zone and the heat affected zone (HAZ) especially in dissimilar weld joints might play an important role in promoting SCC growth.
It will make the results a certain degree of error because the mechanical properties continuity at the interface of materials is ignored.
On the assumption that the mechanical properties at the dividing lines of each two sections are not continuous, it is almost impossible to investigate the crack at the fusion line.
Table 1 shows the material mechanical properties of three zones in the dissimilar weld joint.
Tab.1 Material mechanical property in the dissimilar weld joint.
Online since: October 2011
Authors: Rupinder Singh
METALLURGICAL AFFECTS OF THREE DIMENSIONAL PRINTING BASED RAPID CASTING SOLUTION Rupinder Singh1, a 1Department of Production Engineering, GNDEC, Ludhiana, India aemail: rupindersingh78@yahoo.com Keywords: Three dimensional printing; rapid castings; mechanical properties; micro structure.
Abstract: Three dimensional printing (3DP) as rapid casting (RC) solutions has transformed over centuries from black art to science, but the metallurgical impinge on the process responsible for change in mechanical properties (like: surface finish, hardness, dimensional stability etc.) are still disputed.
The result of study suggests that prominent reason found to be responsible for improving the mechanical properties of RC is control of heat transfer rate while solidification (thus reducing dendrite formation).
The comparison among different alloys/metals w.r.t dimensional tolerance, mechanical properties may be studied and mathematical model for specific volume, pouring temperature and the shell thickness may be developed.
Also the effect of different powder materials used for making shells may be studied for dimensional accuracy and other mechanical properties.
Online since: May 2020
Authors: Rif G. Rizvanov, Ayrat Minnulovich Faнrushin, Marat R. Fatkullin
,Ufa, Russia, Ufa State Petroleum Technological University amarat.fatkullin1@gmail.com, btna_ugntu@mail.ru, crifriz@mail.ru Keywords: ultrasonic shock vibrations, forced cooling, welding deformations, mechanical properties, heat treatment, electric arc welding.
During operation, oil-refining equipment over time destroyed by welded joints due to the impact of power and temperature loads, corrosion, and other factors.
The repair technology presented by us, which consists in a combination of ultrasonic shock vibrations and forced cooling during the welding process, allows to improve the mechanical properties of the welded joint, as well as to refuse to carry out heating during welding and subsequent heat treatment.
Conclusion Welding joints after repairs of large-thickness machines have a very large heterogeneity of mechanical properties, which causes cold cracks in the HAZ during the repair process, as well as a reduction in the service life of the nodes.
The influence of the chemical composition of the base metal on the viscous properties of the heat-affected zone of large diameter welded pipes, Bulletin of the South Ural State University.
Online since: October 2014
Authors: Eva Vejmelková, Robert Černý, Pavel Reiterman, Dana Koňáková, Monika Čáchová
The designed plaster mixes are analyzed from the point of view of their basic physical, mechanical, hygric and thermal properties.
Experimental results show a remarkable enhancement of mechanical properties of the plasters with the increasing dosage of ceramic powder.
The designed plaster mixes are analyzed from the point of view of their mechanical, hygric and thermal properties.
In this way, the imprecision of the geometry on the upper cut off side was not affecting negatively the experiment.
Rovnaníková, Effect of Pozzolanic Admixtures on Mechanical, Thermal and Hygric Properties of Lime Plasters, Constr.
Online since: June 2006
Authors: Chee Yoon Yue, Yee Cheong Lam, Lay Poh Tan, X. Hu, K.C. Tam
Factors that Affect Fibrillation of the Liquid Crystalline Polymer (LCP) Phase In an Injection Moulded Polycarbonate / LCP Blend L.P.
Since the LCP fibres have high orientation and high strength, enhancement of mechanical properties of the molded product is attained.
Injection moulded LCP blends usually have low mechanical properties due to the thick samples resulting in low shear stress experienced by the LCP phase [10,11].
However, due to the popularity of this processing method, it would be very useful to be able to develop LCP blends with good mechanical properties through this method.
By having a highly fibrillated morphology, a better enhancement in the mechanical properties is expected.
Online since: February 2019
Authors: Aleksey N. Shulgin, Anastasia E. Gorodkova, Aleksandr A. Dyakonov
The description of the basic material for the printboards production is given, its basic physical properties are formulated, the features of machining are shown and the range of problems that arise in this case is determined.
It is shown that nesting and, as a consequence, an increased content of glass fibers through a chain of interrelated factors affects the quality and reliability of the printboard operation and the entire product as a whole.
Glassfiber surpasses textolite by its mechanical properties, heat resistance, resistance to aggressive environment and practically does not deteriorate its properties when exposed to air for 20 years or more [5].
This article has a application value, because the increased content of glass fiber and too dense fiber laying for TSP and MLP through a chain of interrelated factors ultimately affects the quality and reliability of the boards.
During the experiments, the following factors were evaluated: availability and size of characteristic defects, wear resistance of the cutting tool (in terms of the number of machined holes and the value of the burrs of the foil).
Online since: February 2011
Authors: Zhen Qiang Ni, Ji Ming Kong, A. Fayou
Influencing factors on slope stability Engineering geological conditions.
So that sliding force of the slope increased, the anti-sliding force reduced, safety factor was lower.
The occurrence of landslide throughout the process was mainly infected and controlled by slope structure, lithology, rainfall and other factors.
Table 1 Physical and mechanical properties of initial soils and rock index soil E[GPa] n g[KN·m-3] Shear strength [°] C[KPa] Gravel soil limestone mudstone Mudstone intercalated with coal Fracture 2.0 12.0 8.0 7.0 0.4 0.40 0.24 0.25 0.30 0.35 16.1 34 26 24 18.2 37.4 56 42 34 31.5 47 320 240 210 29 Table 2 Physical and mechanical properties of different saturated soils index soil E[GPa] n g[KN·m-3] Shear strength [°] C[KPa] 11.2% Gravel soil Fracture 2.0 0.4 0.40 0.35 16.1 18.2 37.4 31.5 47 29 35% Gravel soil Fracture 1.7 0.36 0.40 0.35 16.4 18.5 36.0 29.0 46.5 27.5 70% Gravel soil Fracture 1.3 0.3 0.40 0.35 16.8 18.7 33.8 27.6 45.8 26.8 100% Gravel soil Fracture 1.0 0.2 0.40 0.35 17 19 32 27 45 26 Fig.2 The engineering geological profile Fig.3 The FEM grid model of slope The results and analysis.
This model considered only the role of rain on the soil shear strength reduction, it was necessary to go further analysis on other factors that influenced and affected on the sliding body.
Online since: April 2014
Authors: Hua Guo, Ying Ting Zhou
There are many factors influence the precision of silica gel products mold and vacuum casting mold, of which the main influence factors including the RP prototype error, silica gel mold making and vacuum type error, these factors cause vacuum injection products are difficult to achieve ideal accuracy. 1.
Reaction rate is mainly affected by reaction temperature, the material uniformity, the mould channel scale etc, the influence of such factors will affect the forming parts’ quality and material properties [5].
There are also a lot of other factors which affected the quality of the vacuum injection such as operating time, cure time, ratio of resin, curing temperature, etc, according to the important degree from large to small
(3) The ratio of resin Different ratio will cause changes on the mechanical properties of the parts.
When the ratio is not correct, it will affect the contraction change of the products, it will also change the mechanical properties such as bending strength and bending modulus of elasticity, etc
Online since: December 2023
Authors: Revathy Sankaran, Pau Loke Show
arevathy@ucsiuniversity.edu.my, bpauloke.show@ku.ac.ae Keywords: Hollow glass sphere; strength; sintering; mechanical properties Abstract.
In this present study, an effort has been made to investigate the mechanical properties of hollow glass microsphere.
It has been consistently established that sintering significantly affects properties of HGM.
Future studies should investigate other variables that affect the characteristics of HGM to obtain prominent HGMs with optimum mechanical properties and greater heat resistance capabilities that can be useful in various applications.
Prado, “Mechanical Properties of Glass Microspheres,” Procedia Materials Science, vol. 8, no.
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