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Online since: July 2006
Authors: Marzenia Lech-Grega, B. Płonka, S. Boczkal, J. Senderski
The highest mechanical properties in both alloys being obtained after deformation ε = 2.3.
Discussion In the examined alloys, in which the main alloying element is copper (about 4.5%wt), the alloying additions play a very important role, affecting both alloy structure and properties.
The effect of grain size was also reflected in the mechanical properties of the alloys.
The same factors are also expected to affect the structural reorientation in this alloy after annealing at 300°C/10min.
The effect of the structure was reflected in the mechanical properties, which for alloy B were higher.
Online since: September 2013
Authors: Yan Chen, Hua Li Zuo, Fei Fei Wu, Gao Jie Yu
One of the key factors influencing the durability of the magnetic flux density on the surface of magnetic fabric is the content of magnetic fiber in magnetic fabric.
The magnetism of the fabric is the key factor for Magnetic fabric evaluation, the magnetism of the fabric is affected by times of washing during use.
The mechanical properties of magnetic fiber are greatly affected by the magnetic particles of spinning solution during spinning.
The content of the magnetic particles in magnetic fiber could not be high considering the mechanical properties of magnetic fabric, so the magnetic flux density on the surface of fabric is limited.
Study on properties of magnetic fiber materials[J].
Online since: October 2012
Authors: Chang Sheng Xiang, Qing Fu Li, Jiang Liu
Introduction The welding technique of steel structure is usually one of the key factors to ensure the quality of the whole project [1].
By the means of mechanical test and analysis, physical properties and finite element simulation, we proved that proper welding measures could achieve a satisfactory result.
Tensile, bending, impulse, hardness tests were considered in the mechanical test.
By the preheating and warm preservation measures, the index properties of the bending test reach the demand of the codes, and the trend of the curves are almost same, the lower of ambient temperature, the smaller of bucking loading.
Fig. 3 Welding line, fusion line and heat affected zone of 14mm steel flat welding under -10°C Finite element analysis of temperature stress To prove the effectiveness of this welding construction method theoretically, two models are established for simulating the whole welding procedure especially including the three main factors, the varying field temperature, the temperature and its duration of welding preheating, those of heat preservation, and for analyzing the internal welding residual temperature stress by using the ANSYS finite element analysis program[6], one is steel plates connected in T shape, the other is steel plate and square tube connection.
Online since: December 2011
Authors: Li Xing, Ge Ping Liu, Li Ming Ke, Chun Ping Huang, Xiao Song
The results shown that the vertical force experienced a steady process when tool was moving steadily in the workpiece; The vertical force in steady state was impacted by material, because the thermal and mechanical properties of different material were not same.
Workpiece was affected by heat and force during the friction stir welding.
The thermal and mechanical properties of material were the factors that affected the heat and force during welding, so as to affect the vertical force.
Fig. 3 Vertical forces in steady state welding different material Table 1 The average dates of vertical force welding different material Material Average force during steady welding Fa [KN] TC4 T2 LY12 8.40 7.35 3.10 Hardness of the material was the composite indicator of material elasticity, plasticity, strength, toughness and other mechanical properties.
Pin surface affected the average of vertical force acting on the material during the steady welding.
Online since: September 2013
Authors: Ling Yun Zhang, Ren Chang Huang
By measuring the hole diameter under different conditions, the factors that affect distortion level were obtained, including hole distance and initial plate thickness.
So the range of influence factors is given widely.
Mechanical properties of copper is shown in Table 1.
Mechanical properties of commercial-purity aluminum ρ[kg/m3] E [GPa] ν σs[MPa] σb [MPa] 2700 78 0.33 90 390 The model consists of a deformable plate with a hole, a rigid punch and a polyurethane rubber.
The position of holes in plates affect the level of hole shape distortion near bending deformation area.
Online since: January 2013
Authors: Shu Cai Li, Wan Tao Ding, Jin Hui Liu
And it seriously affected mechanical properties of anchor structure system of underground engineering under complicated erosion environment.
Introduction Reinforcement corrosion is one of important factors to cause degradation of RC structure.
Cracking Mechanical Model of Bolts Rust Expansion Simplified Cracking Mechanical Model of Bolts Rust Expansion.
Stress Analysis of Simplified Mechanical Model of Bolts Rust Expansion Hoop Stress in Surrounding Rock Mass.
Conclusion The critical cracking model analysis of different medium materials show that the cracking order of mortar layer and rock mass is depended on the mechanical properties of mortar and rock mass, in-situ stress and thickness of mortar layer.
Online since: December 2011
Authors: Harvinder Singh Ubhi, Andrew Houghton, Janardhan Saithala
EBSD results confirm that the texture intensity as well as the radial f-factors can be increased by modifications of pilgering tooling.
The (0001) Kearns f-factors are given in Table 1 for the two tubes examined.
It is clear from this table that f-factors increase after reduction and that there are differences between the two samples.
This could have a bearing on fatigue strength since texture orientation affects the elastic modulus.
References [1] W.F Spurr, W.E Quist, The effects of crystallographic texture on the mechanical and fracture properties of Ti-3Al-2.5V hydraulic tubing.
Online since: February 2024
Authors: Daffa Mandala Adinata, Raja Akbar, Muhammad Raihan Atallah Yasir, Rando Tungga Dewa
Indrani et al. investigated the effect of Cu on the mechanical properties of SUS 304H austenitic stainless steel [8].
However, there is still lack of information regarding the mechanical properties and fracture of wire drawing SUS 304 for special requirement.
Annealing process was then carried out to improve the physical and mechanical properties of the SUS 304 wire.
c) Factor C level above 620 m/min causes line breakage, while below 520 m/min affects line efficiency.
Average value of mechanical properties tensile strength Mechanical properties Tensile strength [N] Elongation [mm] Modulus young [GPa] Sample 1 44842,7 21,4 3,13 Sample 2 61088,9 29,7 2,42 (a) (b) Fig. 6.
Online since: November 2012
Authors: Chun Jiang Zhou, Jian Cheng Liu, Adrian Avila
Experimental Investigation of Mechanical Micro Machining for AL6061-T6 Material Chunjiang Zhou(1)(a) Jiancheng Liu(2)(b) Adrian Avila(2) (1)Department of Mechanical Engineering Zhejiang Institute of Mechanical & Electrical Engineering, Hangzhou, CHINA (2)Department of Mechanical Engineering, University of the Pacific Stockton, California, USA (a) Zcj7012231@126.com (b) jliu@pacific.edu Key words: micro milling, cutting force, cutting temperature, surface roughness, cutting burr Abstract: This paper is to experimentally investigate the mechanical micro machining properties of AL6061-T6 using tungsten-carbide micro end mills.
Aly et al. [6] presented a new methodology of providing a finite element model of the micro-cutting process with relevant material properties acquired from a newly developed molecular dynamics simulation model of a uniaxial tension test performed on silicon.
Therefore, the dominant factor which affects the machining quality the most can be identified.
It is apparently that the left side of cutting channel is severely affected by the BUE from Fig.7(c).
There is a tradeoff between these factors.
Online since: July 2013
Authors: Konstantin Jonas Schubert, Axel Siegfried Herrmann
This might happen due to temperature changes, mechanical loads, humidity absorption, fluid loads and other factors.
In addition to changes of the waveguides properties, environmental factors can also influence the SHM system itself.
Additionally, any change to the waveguide will also affect the interaction between the changed strain field and the sensor, and typical environmental influences such as temperature changes or humidity absorption can also alter the properties of the adhesive and the sensor itself.
Apart from influencing wave propagation within the waveguide, the environmental factors can also affect the measurement process itself.
The coefficient ge used by Tracy [9] to calculate the sum of in-plane strain from the measured voltage is influenced not only by the stiffness of waveguide, adhesive and sensor, which can depend on various environmental factors, but also by the piezoelectric properties, geometric dimensions and so forth.
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