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Online since: July 2011
Authors: Bambang Suharno, Dwi Rahmalina, Bondan Tiara Sofyan, Eddy S. Siradj
Mechanical properties were examined through hardness and tensile testing.
Alloying of the matrix was conducted to improve its mechanical properties and the quality of the cast metal.
This circumstance needs more study and analysis with various factors that influenced the bonding.
Regarding composite material, the volume fraction of the reinforced material affects its physical and mechanical properties.
The relationship between the volume fraction of reinforcement and the mechanical properties is stated as the Rule of Mixture (ROM), which demonstrates that increasing the volume fraction of the reinforced material improves the mechanical properties of the composite.
Online since: December 2024
Authors: Bo Yuan Shi, Ming Fei Xiong
Current research on PVA fiber reinforced toughness-concrete mainly focuses on enhancing its mechanical properties and durability [8-9].
This analysis reveals the specific impact of fiber length and dosage on the mechanical properties of the material, providing a basis for further material design and application.
Effects of PVA fibers on the mechanical properties of concrete [J].
Influence of PVA fiber length on the mechanical properties of ultra-high toughness cement-based composites [J].
[16] JC/T2461-2018, Test methods for mechanical properties of high ductility fiber reinforced cementitious composites [S].
Online since: February 2004
Authors: X.C. Luo, K. Cheng
Taking the surface properties affecting the functional performance of the component/product into consideration, this investigation characterizes the surface integrity as microstructure, microhardness, residual stress and fatigue.
Affecting Factors to the Surface Quality.
Cheng classified the key elements that particularly affect the Table 1 The affecting factors to the surface quality Source Linear factors Nonlinear factors Machine tool Modal parameters of wheel spindle, lead screw and nut system Modal parameters of worktable and slideway system Straightness of the slideway Wheel spindle rotational run-out and axial run-out Abrasive tool Wheel diameter Grain size Grain rake angle Position of grain distributions Height distribution of grains Built – up – edge Tool wear Operation conditions Depth of cut Wheel/work speed Feed rate Coolant Environmental vibrations Material property Initial shear stress at shop temperature Initial shear angle The variation of shear stress The variation of shear angle Gain hardness machining accuracy as: machine tools, operation factors, selection of abrasive tools and workpiece materials [6].
Considered the difficulty in quantitative characterization of each factors and their effects, Table 1 lists major factors associated with each of these four primary elements.
Those factors are chosen as the inputs for the modelling approach.
Online since: May 2011
Authors: Ji Sheng Qiu
Steel fiber concrete multi-ribbed composite slab system includes material composite and structure type composite, which has good mechanical and thermal insulation properties.
The influence of the factors can be analyzed by the finite element analysis method.
The method also can make optimization for various factors, so it is an effective complement for structural tests.
In this paper, basing on the effect of steel fiber on the mechanical properties of the structure, some key issues, such as material model, finite element model and the simulation method of steel fiber, were discussed.
For the structure in torsion or composite torsion, the longitudinal reinforcement and stirrups are all affecting the bearing capacity of the component, so steel fibers should be equivalent in two directions.
Online since: July 2005
Authors: Dimitrios Elias Katsareas, Anastasius Youtsos
A simplified 2-D axi-symmetric model, in which residual stresses are produced due to the thermo-mechanical properties mismatch during cooling of the weld, is compared with a detailed model in which the complete multi-pass welding procedure is simulated.
This factor is set to 1.0E-6.
For the low carbon steel the material properties of ASTM A508 class 3 are used (red color), whereas for the stainless steel the temperature dependent material properties of AISI 316L are used (cyan).
The heat-affected zone of the ferritic pipe is modeled as having variable mechanical properties through its thickness, which is simulated by using five material zones (Fig. 5 left).
For the low carbon steel the material properties of ASTM A508 class 3 are used (cyan), whereas for the stainless steel the temperature dependent material properties of AISI 316L are used (purple).
Online since: December 2010
Authors: Ling Ling Zhang, Qing Sun, Ling Zhang
Xenon lamp aging affects the material properties of the specimens with protective coatings more slightly than those without any protective coatings.
High temperature environment affects the material properties of specimens more obviously than low temperature environment does.
Preface Pole and Tower are important support structures in the transmission and other infrastructure, whose structural properties directly affect the safety, economy and reliability of the transmission lines.
All these are important factors which restrict the application of FRP Pole and Tower.
In order to compare, the mechanical properties of eight specimens without any aging treatment (the group number is JB) are tested specifically.
Online since: May 2025
Authors: Deepak Joshi, Susil Putatunda, Saranya Panneerselvam, James Boileau
Compared to conventional ductile iron, ADI exhibits superior mechanical properties.
The mechanical properties of ADI are influenced by factors such as volume fraction of phases, phase transformations, and phase distribution during the austempering process [4-5].
The present study focuses on investigating the microstructure and mechanical properties of ADI processed using the novel two-step austenitization process.
Mechanical Properties Table 3 summarizes the mechanical properties of the ADI processed by conventional,2SA and M2SA process.
Rouns, “The Microstructure and Mechanical Properties of Austempered Ductile Iron”, Journal of Heat Treating, 5(2),1988, 79-85
Online since: May 2007
Authors: Zouheir Fawaz, P. Krimbalis, Cheung Poon, Min Xiao, Mohammad Jahazi, Priti Wanjara
Ni-based superalloys are extensively used in the manufacture of aircraft engine components because of their excellent heat-resistant and corrosion-resistant properties.
Laser welds, roughly 15 cm in seam length, were joined along the center of the joint using processing conditions which were selected using a Taguchi design of experiment methodology (with 3 factors and 2 levels), as indicated in Table 2.
The mechanical properties (ultimate tensile strength and elongation) of each welded condition were evaluated according to the ASTM standard E8M-01.
The tensile properties of the weld are better than those of base metals.
The results of the Taguchi analysis indicated that the tensile properties were not affected by the laser welding parameters investigated in this project.
Online since: August 2023
Authors: Eugênio José Zoqui, Wendel Leme Beil
Fatigue Properties of Thixoformed Al-6wt%Si-2.5wt%Cu Wendel Leme Beil1,a and Eugênio José Zoqui2,b* 1Federal Institute of Education, Science and Technology of São Paulo, IFSP, R.
These parts not only must have the required minimum mechanical properties in terms of yield strength and elongation, but also must be able to withstand cyclic tensile and compressive forces.
The mechanical properties are similar to those of A356, A357 and A319 alloys, which are typically used in SSM processing [13].
The findings also show that, for structural parts that do not need to have demanding mechanical properties, simple thixoforming without subsequent solution and aging heat treatment may be sufficient.
Lei, Effect of Al5Ti1B master alloy on microstructures and properties of AZ61 alloys, Transactions of nonferrous metals of China. 20 (2010) 397-401. https://doi.org/10.1016/S1003-6326(10)60505-5
Online since: October 2011
Authors: Yun Cai Zhao, Chun Ming Deng, Wen You Ma, Gao Jie Hao, Xiao Mei Liu
Foreword Wear-resisting coating prepared by supersonic plasma spraying has excellent mechanical property, friction and wear property, anti-oxidation and corrosion-resistance, so wide attention and application are received, and there are many researches about it to be reported[1-3].
Experimental results and analysis The influence of texturing diamond cross track on friction and wear properties As shown in figure 2, the curve indicates the influence of diamond texturing on the coating’s fiction coefficient.
The analysis of coating’s tribological properties Due to laser remelting, the coating’s microstructure is uniform, hardness is higher, roughness is lower, pores are reduced obviously, and adhesive force is enhanced to base material.
From table 3 it can be seen that all texturing properties are improved in different degrees.
Lubrication Engineering, 2008, 33(7): 28 – 31 [7] Qifei Song, Hong Zhou, Yue Li, Lei Wang, Friction and Wear Properties of Cast-iron Material with Bionic Non-smooth Surface under Normal Temperature[J].
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