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Online since: April 2014
Authors: Roberto Montanari, Maria Elisa Tata, Girolamo Costanza, Stefano Paoloni
The fundamental idea is that the higher dislocation density in the deformed zones may induce an anomaly of thermal properties, in particular of the thermal diffusivity D.
The variations of thermal diffusivity induced by progressively higher degrees of plastic deformation may depend in principle on the evolution of several microstructural factors (grain size, grain orientation and dislocation density).
The effects of dislocations on thermal properties of metals have been widely investigated in [10].
Dislocations affect the heat transport properties in two ways: directly, by acting as centres of scattering, and indirectly, by inducing elastic stress fields.
In conclusion thermal diffusivity is affected by the increase of dislocations density therefore locally IRT measurements can detect states of local plasticization in mechanical components.
Online since: May 2011
Authors: Jian Hua Zhong, Zhi Hong Li, Ling Yu Ou Yang
The effects of different contents of SiO2 on the mechanical property were sdudied in this paper.
In this experiment, SiO2 powders are hoped to toughen epoxy resin, thus improve the mechanical property of the composites.
The effect of concertration of SiO2 on the mechanical property was also investigated.
We consider that the significant effect of SiO2 on improving strength due to two factors, the first is the high elastic modulus of SiO2 powders, and the second is the powerful acting force and cross-linking between SiO2 powders and exopy resin.
Distribution even of SiO2 is the main cause that leads to greater improve the mechanical property of the composites.
Online since: September 2011
Authors: Guo Qiang Chen, Tie Ling Xing, Rui Xin Zhang
Preparation and Properties of Kaolin Modified Polyester Fibers Ruixin Zhang 1,Tieling Xing2,Guoqiang Chen2 1Art and Fashion Engineering School, Changshu Institute of Technology, Changshu 215500, China 2 College of Textile and Clothing Engineering, Soochow University, Suzhou 215021, China zruixin@vip.sina.com; xingtieling@suda.edu.cn; chenguojiang@suda.edu.cn Keywords: Kaolin; Modified polyester fibers; Properties Abstract: Kaolin masterbatch was prepared first, and then three kinds of kaolin modified polyester fibers (100 dtex) which respectively contained kaolin masterbatch 2%(PK2), 4%(PK4), 6%(PK6) were successfully spun.
Properties of kaolin modified fibers were discussed.
Compare the total transmission rate under the T (UVA) And T (UVB), and UV protection factor UPF.
Table1 Mechanical properties of kaolin modified polyester fibers Item Kaolin master batch content (wt%) Breaking strength (dN/tex) Breaking elongation (%) Young's modulus (Gf/tex) PET 0 3.40 42.8 824.41 PK2 2 3.12 41.8 798.44 PK4 4 3.05 42.8 767.05 PK6 6 2.93 50.5 771.35 It could be seen from Table 2, the moisture absorption performance of kaolin modified polyester fibers were obviously improved compared with the unmodified polyester.
The chemical structure and super molecular structure of fibers will be the main factor affecting the moisture absorption if the thickness and cross-sectional shape of the fiber were the same [6].
Online since: April 2023
Authors: Oritonda Muribwathoho, Sipokazi Mabuwa, Velaphi Msomi
FSP was developed to improve fatigue life without affecting the surface properties of metal alloys such as formability, hardness, ductility, strength, and the properties of bulk metals [19].
The mechanical properties of produced composites incorporating cerium oxides or CNTs were enhanced.
It has been investigated how the mechanical properties are affected by FSP process factors such tool geometry, traverse speed, and rotational speed.
It has been investigated how the mechanical properties are affected by FSP process factors such tool geometry, traverse speed, and rotational speed.
Three successive FSP passes and the mechanical properties of reinforced particles were studied.
Online since: March 2022
Authors: Sotya Anggoro, Hidayat Nur Mujtahid, Zuhri Nurisna
Testing mechanical properties were undergone by hardness testing and pull-off test to determine the coating's adhesive strength.
Several factors can influence the results of the adhesion layers strength.
The small amount of violence is caused by several factors, including porosity in the coating layer because oxygen trapped in the coating layer occurs.
The percentage increasing in the material surface's mechanical properties was obtained in the data of microvickers testing before and after the conduct of both thermal spray methods.
Wisnu, “Thermal Spray Application for Improving the Mechanical Properties of ST 60 Carbon Steel Surfaces with Metcoloy 2 and Tafa 97 MXC Coatings,” 2020, pp. 645–652
Online since: February 2021
Authors: Djoko Sihono Gabriel, Husen Nasrullah
However, during the repeated recycling processes, degradations occur in mechanical properties [11].
This degradation occurs as a result of heating, processing, and other factors during the recycling processes leading to declines in quality [22,23,24,25].
In addition, colouring, heating, and processing also affected the optical properties of polymers [35].
Etxeberria, and E.Y.Chen, Packaging materials with desired mechanical and barrier properties and full chem. recyclability, Nat.
Patel, Studies on Mechanical Properties of Recycled Polypropylene Blended with Virgin Polypropylene, J.
Online since: May 2014
Authors: Dong Mei Zhang, Chun Min Shang, Jian Dong Yang
There are several factors, particularly in the grinding error and the elastic modulus of grinding tool’s material is an important part of them while the grinding tool is made to bending.
Elastic modulus of the material is the inherent properties of it, a material selected as long as the grinding tool should be a constant volume in the bending process of the grinding tool, but the choice of materials as a grinding tool may produce errors which probably affect the accuracy of its bending.
The maximum error at x = 0, then set the parameters as follows: , The large error of elastic modulus will affect the error curve although it seems that the scale factor is very small.
Optical Technology, 1993, (5) :7-13 [4] "Metal mechanical properties" writing group, Metal mechanical properties.
Mechanical Design Manual (Volume 1).
Online since: June 2012
Authors: Li Jing Zou
This article provides an overview of the basic properties of the TiCN hard film, preparation methods, influencing factors, and application development trend.
TiCN coating with high hardness, resistance to pitting corrosion, high temperature resistance, erosion, combined with the matrix and low friction coefficient good mechanical properties are widely used in cutting tools, drills, and mold.
Figure 2 Changes of C content in Figure 3 Lattice constant changes with C content XRD diffraction spectrums Influence factors of TiCN coating performance Temperature.The quality of TiCN coating is mainly affected by the process factors like composition, temperature and atmosphere.
The deposition temperature too high and deposition rate too fast will cause the coated crystal show thick branched, affecting the quality of the coating; the deposition temperature too low, it tends to form porous, loose sediments, affecting the binding strength of the coating and matrix.
Impact of annealing on microstructure properties and cutting perform ance of an TiAlN coating[J].
Online since: May 2012
Authors: Cong Liu, Li Wei Chen, Yan Qiu Leng, Jian Wei Qiao
Because of width of buried ground fissures’ affected zone depends on many factors, there are still lots of work to be done on the division of buried ground fissure’s deformation zone.
Uniaxial Constitutive Relationship of Loess 1The characteristics of loess fracture failure Mechanical property and strength of loess are controlled by various factors.
So studying the tensile properties of the loess is the basis of studying the rupture propagation of ground fissures.
Stratigraphic section and soil’s physical and mechanical properties where buried ground fissure located are shown in Table2.
(3)This paper mainly focuses on exploring propagation mechanism of buried ground fissure, but the width of affected zone depends on many factors, such as buried depth of buried ground fissure, physical and mechanical properties of soil layer, and movement style of ground fissure etc.
Online since: June 2017
Authors: Biao Wang, Jin Zhu
Fig. 1 SEM micrographs of fractured surface of (a) ABS and (b) 5% MWCNT/ABS nanocomposite The dispersion of MWCNTs directly affects the nanocomposite’s printing ability and other physical properties.
Rheological properties.
Fig. 4 Variation of mechanical properties of ABS and MWCNT/ABS nanocomposites filaments with various MWCNTs content Thermal properties.
For FDM printing, the CLTE of materials is an important factor to affect the dimension of final printed parts.
Murphy, Mechanical and thermal properties of polyphenylene sulfide/multiwalled carbon nanotube composites, J.
Showing 3191 to 3200 of 25867 items