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Online since: September 2019
Authors: L.B. Aksenov, Sergey Kunkin, Nikita M. Potapov
One of the important problems affecting the economic efficiency of the proposed technology is a rational and cost-effective technology of manufacturing the workpiece for the subsequent technological process of rotary forging.
Analysis of the mechanical properties of steel 20 and stainless steel AISI 316 in the temperature range (900-1100)0C shows that the value of the yield strength of stainless steel is almost the same or slightly exceeds the yield strength of steel 20 (up to 10%).
Advances in Mechanical Engineering, Lecture Notes in Mechanical Engineering, Springer International Publishing Switzerland, 2016, p.175-181, DOI 10.1007/978-3-319-29579-4
Modeling of microstructure and mechanical properties of hot rolled steels.
Effect of structure factor on high-temperature ductility of pipe steels.
Analysis of the mechanical properties of steel 20 and stainless steel AISI 316 in the temperature range (900-1100)0C shows that the value of the yield strength of stainless steel is almost the same or slightly exceeds the yield strength of steel 20 (up to 10%).
Advances in Mechanical Engineering, Lecture Notes in Mechanical Engineering, Springer International Publishing Switzerland, 2016, p.175-181, DOI 10.1007/978-3-319-29579-4
Modeling of microstructure and mechanical properties of hot rolled steels.
Effect of structure factor on high-temperature ductility of pipe steels.
Online since: January 2021
Authors: Zhi Guo Gao
The useful model is also applicable to other single-crystal superalloys with similar metallurgical properties by laser welding or laser cladding, and provide a more accurate and reliable way of solidification cracking susceptibility evaluation.
Introduction γˊ gamma prime and γˊˊ gamma double prime precipitation-strengthened nickel-based superalloy and derivative are widely used in aerospace industries because of excellent high-temperature mechanical properties, corrosion resistance and thermal stability, however, the weldability is still challenge because of high susceptibility to solidification cracking.
Severe weldability is significantly reduced by proper control of metallurgical factors for solidification cracking in order to satisfy the increasing requirement of performance and weld quality.
The material properties in the calculation are available in the literature [23-26].
Fig.2 Dendrite selection (a), dendrite trunk spacing (b) and solidification temperature range (c) in the (001) and [100] welding configuration, dendrite selection (d), dendrite trunk spacing (e) and solidification temperature range (f) in the (001) and [110] welding configuration (laser power 5kW, welding speed 4m/min) Both metallurgical factors improve the weldability under nonequilibrium solidification conditions.
Introduction γˊ gamma prime and γˊˊ gamma double prime precipitation-strengthened nickel-based superalloy and derivative are widely used in aerospace industries because of excellent high-temperature mechanical properties, corrosion resistance and thermal stability, however, the weldability is still challenge because of high susceptibility to solidification cracking.
Severe weldability is significantly reduced by proper control of metallurgical factors for solidification cracking in order to satisfy the increasing requirement of performance and weld quality.
The material properties in the calculation are available in the literature [23-26].
Fig.2 Dendrite selection (a), dendrite trunk spacing (b) and solidification temperature range (c) in the (001) and [100] welding configuration, dendrite selection (d), dendrite trunk spacing (e) and solidification temperature range (f) in the (001) and [110] welding configuration (laser power 5kW, welding speed 4m/min) Both metallurgical factors improve the weldability under nonequilibrium solidification conditions.
Online since: October 2010
Authors: Qing Xia Zhu, Wei Hui Jiang, Qiong Qiong Xu
Poor mechanical properties of both HA and CHA limit their uses in the loading sites [6].
Apart from the thermodynamic considerations, solid reaction can be affected by the kinetics factors.
Temperature is one of the important external conditions to affect the solid-reaction rate.
The rate constant K is given by the equation(1)for the chemical reaction, (1) Where is the activation energy for chemical reaction, A is factor related to the particle activation.
The diffusion factor D is given by the following equation(2)for the diffusion reaction, (2) Where Q is the activation energy for diffusion reaction, D0 is frequency factor.
Apart from the thermodynamic considerations, solid reaction can be affected by the kinetics factors.
Temperature is one of the important external conditions to affect the solid-reaction rate.
The rate constant K is given by the equation(1)for the chemical reaction, (1) Where is the activation energy for chemical reaction, A is factor related to the particle activation.
The diffusion factor D is given by the following equation(2)for the diffusion reaction, (2) Where Q is the activation energy for diffusion reaction, D0 is frequency factor.
Online since: January 2013
Authors: Gang Wang
To explore between beam just rigid, articulated, semi-rigid and so on the different connection for the effect on the properties of the stress of the structure, and at the same time, considering the structure model is a big gap between the height (maximum height 6m tall, with a minimum of 3m), the structure is more soft, at the same time SAP2000 can use releasing node part constraint to simulate the semi-rigid nodes, For the following three different node rotational stiffness for structural model finite element analysis: are 2×104kN·m/ rad for semi rigid connection 1, 1×104kN ·m/ rad for semi rigid connection 2, 5×103kN·m/ rad 3 for the semi rigid connection,coupled with rigid connection and articulated, this paper used a total of five different beam-column joint connection manner structure stress performance analysis.
3 Finite element analysis results
3.1 Dynamic analysis
Table 1 Effect of different connection modes of the
model
We can see that, with the increase of the layer number, side column X to sway in the 5 kinds of node stiffness under both showed a trend of increase, There is no obvious structure stiffness weak place; Vertex X to sway with beam-column joints stiffness is decreased. 3.3 Dynamic time history analysis Response spectrum depends mainly on earthquake acceleration the most strong records , but previous earthquake damage phenomenon shows that the duration is also affecting the structure damage degree of important factors.
In accordance with the building site soil remarkable cycle, seismic wave frequency spectrum characteristics, the structure and its own dynamic factors, select the United States elvis and cent and (time interval 0.02s, total time for 30s, wave is 314.7cm/s2) structure response and displacement analysis.
After the proposal analysis study, will be other factors into consideration at the same time.
Consider beam-column semi-rigid connection mega frame mechanical performance study [J].
We can see that, with the increase of the layer number, side column X to sway in the 5 kinds of node stiffness under both showed a trend of increase, There is no obvious structure stiffness weak place; Vertex X to sway with beam-column joints stiffness is decreased. 3.3 Dynamic time history analysis Response spectrum depends mainly on earthquake acceleration the most strong records , but previous earthquake damage phenomenon shows that the duration is also affecting the structure damage degree of important factors.
In accordance with the building site soil remarkable cycle, seismic wave frequency spectrum characteristics, the structure and its own dynamic factors, select the United States elvis and cent and (time interval 0.02s, total time for 30s, wave is 314.7cm/s2) structure response and displacement analysis.
After the proposal analysis study, will be other factors into consideration at the same time.
Consider beam-column semi-rigid connection mega frame mechanical performance study [J].
Online since: July 2014
Authors: Zhi Man Zhao, Song Han, Rui Tian, Si Cheng Quan
Phosphorus, fluorine impurities formed into calcium-phosphate and calcium-fluoride in process of gypsum conversion reaction which is dissolvable and covered the surface of crystal, and severely hampered the development of gypsum crystal and made the mechanical properties of high-strength gypsum deeply affected.
Most of the research considered that synthesizes each kind of factors; the Lime Neutralization is the best of the traditional methods [4].
The principle of the Water-Washing was clean up most of the soluble impurities which would affect the quality of the phosphorus gypsum in the phosphogypsum by adding water in and pout it out again and again.
So synthesizes each kind of factors, the processing efficiency of Lavation is better than the all kinds of traditional methods.
Synthesizes each kind of factors, the lavation was better than the traditional methods.
Most of the research considered that synthesizes each kind of factors; the Lime Neutralization is the best of the traditional methods [4].
The principle of the Water-Washing was clean up most of the soluble impurities which would affect the quality of the phosphorus gypsum in the phosphogypsum by adding water in and pout it out again and again.
So synthesizes each kind of factors, the processing efficiency of Lavation is better than the all kinds of traditional methods.
Synthesizes each kind of factors, the lavation was better than the traditional methods.
Online since: January 2021
Authors: Leo A.I. Kestens, Mehdi Mehdi, Erik J. Hilinski, Afsaneh Edrisy, You Liang He, Tom Zhou, Peter Badgley
Cube texture ({001}<100>) is a desired final texture in non-oriented electrical steel sheets used as magnetic cores because it contains two easy <100> axes in the sheet plane, which is beneficial to the magnetic properties.
Plane-strain compression (rolling) of the rotated Goss grains produced shear bands within these grains due to their large Taylor factor.
In the deformed <111>//ND grains, numerous shear bands also form due to their high Taylor factor under plane-strain compression.
It is thus shown that the orientations of the crystallites within the shear bands formed within the deformed matrix play an important role in the nucleation and the subsequent grain growth, i.e. affecting the final texture.
The orientations of the crystallites within the shear bands play an important role in the initial nucleation and subsequent grain growth during recrystallization, i.e. affecting the final texture.
Plane-strain compression (rolling) of the rotated Goss grains produced shear bands within these grains due to their large Taylor factor.
In the deformed <111>//ND grains, numerous shear bands also form due to their high Taylor factor under plane-strain compression.
It is thus shown that the orientations of the crystallites within the shear bands formed within the deformed matrix play an important role in the nucleation and the subsequent grain growth, i.e. affecting the final texture.
The orientations of the crystallites within the shear bands play an important role in the initial nucleation and subsequent grain growth during recrystallization, i.e. affecting the final texture.
Online since: August 2013
Authors: Eugenio Brusa
Table 1 : Geometric properties of the bearing SKF©314833B.
Unfortunately, literature poorly suggest some typical mechanical properties like the ultimate tensile strength, yielding stress (if present), fatigue limit and toughness of piezoelectric materials.
A current goal of the research activity is studying new composite materials where the mechanical strength and the electromechanical coupling factor can be both fairly high.
Mechanical properties of high energy density piezoelectric ceramics, Mat.
Comparative study of piezoelectric matrials properties for green energy harvesting from vibration, Proc.2010 Annual IEEE Indian Conference, 2010
Unfortunately, literature poorly suggest some typical mechanical properties like the ultimate tensile strength, yielding stress (if present), fatigue limit and toughness of piezoelectric materials.
A current goal of the research activity is studying new composite materials where the mechanical strength and the electromechanical coupling factor can be both fairly high.
Mechanical properties of high energy density piezoelectric ceramics, Mat.
Comparative study of piezoelectric matrials properties for green energy harvesting from vibration, Proc.2010 Annual IEEE Indian Conference, 2010
Online since: May 2016
Authors: Pitak Laoratanakul, Mana Rodchom, Thassanee Wonglom, Kritkaew Somton, Ryan C. McCuiston
Introduction
Alumina is one of the preferred ceramic materials for armor applications due to its outstanding mechanical properties, including strength and hardness, as well as having relatively low manufacturing costs [1].
The porosity is a mechanical defect which lowered the flexural strength of all the samples to some degree.
It was found that both PVA and glass content strongly affected the adhesion property to the alumina surface.
More factors need to be studied, including adhesive de-airing and thermal debinding, as low porosity, good densification, and strong adhesion are essential requirements for armor ceramic manufacturing.
Silva, Structural, electrical and thermal properties of borosilicate glass-alumina composites, J.
The porosity is a mechanical defect which lowered the flexural strength of all the samples to some degree.
It was found that both PVA and glass content strongly affected the adhesion property to the alumina surface.
More factors need to be studied, including adhesive de-airing and thermal debinding, as low porosity, good densification, and strong adhesion are essential requirements for armor ceramic manufacturing.
Silva, Structural, electrical and thermal properties of borosilicate glass-alumina composites, J.
Online since: August 2019
Authors: Srisagul Sungthongjeen, Worawut Kriangkrai, Sirachai Leatpianpanit, Phurit Thanarangsarit, Phirawat Trirattanapintusorn
However, there are two main limitations of ODT, which are an insufficient mechanical strength i.e. hence, careful handling required and these tablets may leave an unpleasant taste and/or grittiness mouth if not formulated [2].
Although most of these medicines have efficacy or even life-saving properties, a significant portion has adverse chemosensory side effects because of an unpleasant taste [3].
The taste-masking property, physical properties, disintegration and dissolution test of ODD was performed to evaluate the factors that affect such as preparation technique, grades of crospovidone and ratio between acetaminophen and crospovidone.
The particle with a low percentage of drug release represented a taste-masking property.
The taste-masking property depended on the ratio between an active and a polymer.
Although most of these medicines have efficacy or even life-saving properties, a significant portion has adverse chemosensory side effects because of an unpleasant taste [3].
The taste-masking property, physical properties, disintegration and dissolution test of ODD was performed to evaluate the factors that affect such as preparation technique, grades of crospovidone and ratio between acetaminophen and crospovidone.
The particle with a low percentage of drug release represented a taste-masking property.
The taste-masking property depended on the ratio between an active and a polymer.
Online since: June 2025
Authors: Rita Irmawaty, Muh. Afwan Irsyad, Fakhruddin Fakhruddin
Geopolymer materials have excellent mechanical properties, such as fire and corrosion resistance [5].
The presence of polyvinyl alcohol (PVA) in cemented materials has been found to enhance their mechanical properties.
One of the factors affecting the composite action between concrete beams and Geopolymer mortar panels is the spacing between the bolts.
Furthermore, Na2SiO3 gel and NaOH were added to the mixture with the ratio of Na2SiO3 (18.5% Na2O, 36.4% SiO2, and 45% H2O) to NaOH (constant concentration of 8 molar) is 3:2 with the aim that fly ash has binding properties.
Ozbakkaloglu, “Fly ash-based eco-friendly geopolymer concrete: A critical review of the long-term durability properties,” Constr.
The presence of polyvinyl alcohol (PVA) in cemented materials has been found to enhance their mechanical properties.
One of the factors affecting the composite action between concrete beams and Geopolymer mortar panels is the spacing between the bolts.
Furthermore, Na2SiO3 gel and NaOH were added to the mixture with the ratio of Na2SiO3 (18.5% Na2O, 36.4% SiO2, and 45% H2O) to NaOH (constant concentration of 8 molar) is 3:2 with the aim that fly ash has binding properties.
Ozbakkaloglu, “Fly ash-based eco-friendly geopolymer concrete: A critical review of the long-term durability properties,” Constr.