Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: July 2011
Authors: Xiao Ling Xie, Wen Hai Li, Ying Hui Wei
Polymer blending are widely used as a method for improving both mechanical properties and processability[10].
Nevertheless, we still think its properties “unsatisfactory”, so it could be improved further.
Results and discussions Factors affecting the tensile strength. when DOP content was 35 g, the tensile strength of the samples was decreased with the increase of CPE content (see Fig.1).
Factors affecting the elongation rate.
By increasing the hot-pressing temperature, the blending effect between PVC and CPE as well as the mechanical performance of the samples were increased, however, over-high hot-pressing temperature would result in plasticizer precipitation.
Nevertheless, we still think its properties “unsatisfactory”, so it could be improved further.
Results and discussions Factors affecting the tensile strength. when DOP content was 35 g, the tensile strength of the samples was decreased with the increase of CPE content (see Fig.1).
Factors affecting the elongation rate.
By increasing the hot-pressing temperature, the blending effect between PVC and CPE as well as the mechanical performance of the samples were increased, however, over-high hot-pressing temperature would result in plasticizer precipitation.
Online since: April 2017
Authors: Gavin Baxter, Spencer Jeffs, Henry Illsley, Robert J. Lancaster, Roger Hurst
As well as being influenced by the input parameters, the microstructure and hence mechanical properties are also affected by the geometry of the component being manufactured, primarily due to the effect this has on the cooling characteristics.
The mechanical properties of these three different variants will be compared, as will the effect of temperature on each of them.
To give an indication of the mechanical properties of the individual build, conventional uniaxial tensile specimens were built alongside the component.
Harling, The development of a miniaturized disk bend test for the determination of postirradiation mechanical properties, J.
Murr, Comparison of the microstructures and mechanical properties of Ti–6Al–4V fabricated by selective laser melting and electron beam melting, Mater.
The mechanical properties of these three different variants will be compared, as will the effect of temperature on each of them.
To give an indication of the mechanical properties of the individual build, conventional uniaxial tensile specimens were built alongside the component.
Harling, The development of a miniaturized disk bend test for the determination of postirradiation mechanical properties, J.
Murr, Comparison of the microstructures and mechanical properties of Ti–6Al–4V fabricated by selective laser melting and electron beam melting, Mater.
Online since: March 2008
Authors: Chung Chen Tsao
The results
show that the feed rate and drill type are the most significant factor affecting the induced-thrust in
drilling CFRP laminates.
Introduction Owing to composite materials have the superior mechanical properties when compared against conventional metal, like strength and stiffness, the use of composite parts is increasing within the design of structural elements in aerospace, automobile and marine industries.
The influence of each control factor (A, B and C) on the quality character factors (thrust force) was analyzed from the S/N ratio response table.
A bigger control factor level difference means a greater influence on the quality character factors.
In Table 4, the most important variables affecting the thrust force are feed rate (P = 50.9 %) and followed by the drill type (P = 44.4 %).
Introduction Owing to composite materials have the superior mechanical properties when compared against conventional metal, like strength and stiffness, the use of composite parts is increasing within the design of structural elements in aerospace, automobile and marine industries.
The influence of each control factor (A, B and C) on the quality character factors (thrust force) was analyzed from the S/N ratio response table.
A bigger control factor level difference means a greater influence on the quality character factors.
In Table 4, the most important variables affecting the thrust force are feed rate (P = 50.9 %) and followed by the drill type (P = 44.4 %).
Online since: December 2014
Authors: Bing Tao Tang, Guang Chun Wang, Wei Zheng, Liang Chen
While, for the grain boundary region, the parameter M is supposed to be the average value of the orientation factors of the two grains on both sides of the grain boundary.
Orientation factors.
The grain orientation affects its mechanical properties along the deformation direction.
And the orientation factors are 2.64, 2.45 and 3.67 for these three orientations, respectively.
When the specimen size is smaller, the volume fraction of surface grains is higher and thus the mechanical properties of surface grains mainly affect the total flow stress of the specimen.
Orientation factors.
The grain orientation affects its mechanical properties along the deformation direction.
And the orientation factors are 2.64, 2.45 and 3.67 for these three orientations, respectively.
When the specimen size is smaller, the volume fraction of surface grains is higher and thus the mechanical properties of surface grains mainly affect the total flow stress of the specimen.
Online since: July 2005
Authors: J.B. Li, Vincent Ji, D.L. Wang, X.Y. Gai, S.Y. Ma
An Investigation into Work Hardening of Shot Peening Affected Layer
Using X-Ray Stress Analysis Technique
J.B.
A plate specimen, the surface of which may have been strengthened by a mechanical treatment and in a state of biaxial residual stress, is used in the test.
Microhardness is an integrated parameter that can be affected by a series of material properties, such as elasticity, strength, strain hardening capacity, ductility, etc.
Therefore, even for the steel treated in hard state, the micro structural changes of the surface layer during shot peening are a strengthening factor instead of a weakening one.
McLean, Mechanical Properties of Matals, 1st Edn., John Wiley & Sons, New York, 1962
A plate specimen, the surface of which may have been strengthened by a mechanical treatment and in a state of biaxial residual stress, is used in the test.
Microhardness is an integrated parameter that can be affected by a series of material properties, such as elasticity, strength, strain hardening capacity, ductility, etc.
Therefore, even for the steel treated in hard state, the micro structural changes of the surface layer during shot peening are a strengthening factor instead of a weakening one.
McLean, Mechanical Properties of Matals, 1st Edn., John Wiley & Sons, New York, 1962
Online since: October 2010
Authors: Paulo B. Lourenço, Hélder S. Sousa, Luís C. Neves
The deterioration process in timber is different than the other materials, such as only a
change in geometry is observed whereas the mechanical properties are not affected.
The geometric and mechanical properties of timber structures are considered as random variables, as are the loads and the effects of deterioration.
Random variables were used for the definition of the mechanical properties of the materials and the applied loads.
Since this factor influences both the design values for mechanical and resistant properties of timber, its contribution is very important in safety analysis of a timber structure.
"JCSS Probabilistic Model Code, Part 3: Resistance Models - 3.5 Properties of Timber." 1-16.
The geometric and mechanical properties of timber structures are considered as random variables, as are the loads and the effects of deterioration.
Random variables were used for the definition of the mechanical properties of the materials and the applied loads.
Since this factor influences both the design values for mechanical and resistant properties of timber, its contribution is very important in safety analysis of a timber structure.
"JCSS Probabilistic Model Code, Part 3: Resistance Models - 3.5 Properties of Timber." 1-16.
Online since: November 2013
Authors: Jun Wang, Chao Zhao
Based on this, it discusses the work performance, mechanical properties, durability properties, shear properties, seismic performance of recycled concrete and its performance evaluation.
Performance characteristics of recycled concrete Mechanical properties:Our concrete research expert Prof.
Durability:One of the standards to measure the important mechanical properties of concrete is the durability index.
Basic Mechanical Properties of Recycled Concrete and Application Research.
Mechanical Properties of Recycled Coarse Aggregates with Different Replacement Ratios.
Performance characteristics of recycled concrete Mechanical properties:Our concrete research expert Prof.
Durability:One of the standards to measure the important mechanical properties of concrete is the durability index.
Basic Mechanical Properties of Recycled Concrete and Application Research.
Mechanical Properties of Recycled Coarse Aggregates with Different Replacement Ratios.
Online since: March 2006
Authors: Heoung Jae Chun, J.M. Choi, Joon Hyung Byun
Rowlands
et al. [8] investigated effects of friction, geometry, clearance and material properties on load
distribution.
Test specimens were fabricated and mechanical characterization was conducted to obtain elastic properties of unidirectional MWK fabric composites.
The experimentally obtained elastic properties of the unidirectional composites and steel pin are shown in Table 1.
Although linear-elastic material properties were used in the analysis, the problem was non-linear because the contact areas and frictional forces varied with the load.
The stress distributions and stress concentration factors are shown in Fig. 8.
Test specimens were fabricated and mechanical characterization was conducted to obtain elastic properties of unidirectional MWK fabric composites.
The experimentally obtained elastic properties of the unidirectional composites and steel pin are shown in Table 1.
Although linear-elastic material properties were used in the analysis, the problem was non-linear because the contact areas and frictional forces varied with the load.
The stress distributions and stress concentration factors are shown in Fig. 8.
Online since: October 2015
Authors: Saravanan Karuppanan, Sonny Irawan, Abhilash M. Bharadwaj, Mohamad Zaki bin Abdullah, Ismail bin Mohd Saaid
Various factors affecting the casing material needs to be considered by the drilling engineers.
Casing design for such wells becomes acutely important especially in terms of material behavior at operating conditions. [5] Properties such as yield point of the material vary with temperature [6].
The mechanical properties of different casing grades are mentioned in the Table 1.
This is achieved by providing the necessary non-linear properties to the solver.
The mechanical properties of these two materials are mentioned above.
Casing design for such wells becomes acutely important especially in terms of material behavior at operating conditions. [5] Properties such as yield point of the material vary with temperature [6].
The mechanical properties of different casing grades are mentioned in the Table 1.
This is achieved by providing the necessary non-linear properties to the solver.
The mechanical properties of these two materials are mentioned above.
Online since: March 2021
Authors: Li Hua Zhan, Xue Ying Chen, Hai Long Liao, Yuan Gao
Evolution of IPA over aging time
3.3 Evolution of mechanical properties with various orientations
Fig. 4 shows the evolution of the room temperature mechanical properties of the sample over time at 165 ° C under different aging conditions.
It is worth noting that the mechanical properties of the initial material has obvious anisotropic.
The anisotropy of mechanical properties is also attributed to the texture, which will cause different Shmid factors (SF) in various orientations of the sheet.
Precipitation strengthening plays a major role in the aging strengthing, so the size and distribution of the precipitates will directly affect the properties of the material.
Therefore, compared with SFA, the promotion effect of stress on precipitates is not obvious, so there is not much difference in mechanical properties between compression creep ageing and SFA. 4.
It is worth noting that the mechanical properties of the initial material has obvious anisotropic.
The anisotropy of mechanical properties is also attributed to the texture, which will cause different Shmid factors (SF) in various orientations of the sheet.
Precipitation strengthening plays a major role in the aging strengthing, so the size and distribution of the precipitates will directly affect the properties of the material.
Therefore, compared with SFA, the promotion effect of stress on precipitates is not obvious, so there is not much difference in mechanical properties between compression creep ageing and SFA. 4.