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Online since: July 2022
Authors: Jakub Horník, Vladimír Mára, Radek Bednář
Mechanical properties were determined by uniaxial tensile test and hardness testing.
Microstructure development during the shaping process is one of the most important factors that affects the overall properties of the final part.
The 60% deformation acts as a threshold, where the pattern for mechanical properties is changing.
With increasing deformation, the mechanical properties are increasing as well.
Jen, Intermetallics Formation and Their Effect on Mechanical Properties of Al-Si-X Alloys.
Online since: July 2025
Authors: Siti Noorbaini Sarmin, Mohamad Jawaid, Amran Shafie Ismail, Hassan Fouad, Nurjannah Salim, Muhamad Haikal Hamdan
This is evident in their heightened susceptibility to humidity and thermal degradation, inadequate barrier and mechanical properties, and other factors that impede their extensive industrial utilization.
Characterization The mechanical properties of the samples were assessed through tensile tests using a 5 kN Blue Hill INSTRON Universal Testing Machine.
Seaweed filler improves PBAT crystallization by increasing the onset temperature by up to 20 °C during cooling from the melt, affecting its thermal characteristics.
[7] Hassan, T., et al., Acoustic, Mechanical and Thermal Properties of Green Composites Reinforced with Natural Fibers Waste.
[8] Sarmin, S.N., Jawaid, M., Zaki, S.A., Radzi, A.M., Fouad, H., Khiari, R., Rahayu, S. and Amini, M.H.M., 2023., p.102833., Enhancing the properties of date palm fibre reinforced bio-epoxy composites with chitosan–synthesis, mechanical properties, and dimensional stability. .
Online since: May 2014
Authors: Ke Ping Zhou, Jian Zhang, Hong Wei Deng, Chun Fang Dong, Jie Lin Li, Wei Gang Tian
The research can provide some mechanical parameters basis to physical mechanics properties of sandstones.
Introduction Research shows that the pore water in rocks is in the state of freezing and thawing if temperature alternates positively and negatively, and thus the physical and mechanical properties of rocks will be affected under the effect of freezing and thawing.
Therefore, the studies on the physical and mechanical properties of rocks under the condition of water chemical environment and temperature effect are of great importance to know well the deformation and strength properties of rocks.
In the mechanical properties of rocks under the effect of water chemistry, many foreign and domestic scholars also have conducted studies.
Third, rock's strength damage is affected by many factors, and the rock the practical engineering is often under coupling action of many factors.
Online since: October 2011
Authors: S.M. Sapuan, A.B. Abdullah, Z. Samad, H.M.T. Khaleed, N.A. Aziz
bSchool of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, MALAYSIA.
Accuracy of the net-shape manufacturing such as forging becomes critical as the process depends on many factors.
Defect will harm the assembly tend to affect the performance of the part.
Cold forging, one of the net-shape manufacturing processes is governed by many factors such as friction, parts geometries, die shape and temperature setting of the die and workpiece.
Before After Fig. 1: The pin head before and after embossing FE Modeling Aluminum (AA6061-T4), with thickness 3 mm was used as an embossed material and its properties used in the FEM simulation were list in Table 1.
Online since: May 2012
Authors: Zhe Shu, Sheng Ji Jin, Yong Qin Rui
shengjijin@sina.com Key words: Tunnel Group; Excavation; Mechanical Properties; Numerical Simulation Abstract: To rely on nuclear power plant water tunnel project, through the numerical simulation methods, we analysized the extent of rock deformation and stability of the process of excavation and supporting to reveal the deformation near the working face of rock tunnel.The research results show: When carrying out tunnel excavation, the plastic deformation zone in the horizontal direction perpendicular to the tunnel axis and the vertical downward direction are extended, the vault appears to sink, but also occurred in surface subsidence.
The other is a concrete retaining inner arch, in a bracing balance has not reached the limit before the inner arch to bear the load, thus providing the required safety factor.
Tunnel group does not affect by the boundary conditions, along the axial direction we take 80m, 70m vertical holes section to take the boundary conditions for the modeling.
Other factors related to it set to 0, the quality of being passive unit does not include the results in solving them.
Simulation of mechanical parameters of material design values and sprayed concrete parameters are as shown in Table 1 and Table 2. which include E-modulus of elasticity, C-cohesion, φ-angle of friction, μ-Poisson's ratio, γ-heavy, w-gravity factor, EA-nominal rigidity, EI-bending stiffness[3].
Online since: October 2011
Authors: Sandeep Jindal, Rahul Chhibber, N.P. Mehta
The main tendencies of the optimisation of properties of HSLA steels are a decrease in the content of alloying elements; an increase in the number of combinations of microalloying elements; a decrease in the content of impurities in the form of carbon, hydrogen, nitrogen, oxygen residual elements like sulphur and phosphorus; improvement of the homogeneity, improvement of level of mechanical properties.
The mechanical properties of any weldment depend on its chemical composition; microstructures of weld metal which further depend upon solidification history and post-weld heat treatment.
During SAW, weld-metal chemistry is determined mainly by welding consumables and operating variables, other secondary factors being joint design, heat input of welding and weld thermal history [16, 17].
Generally, in SAW, the mechanisms are primarily affected by three factors: dilution of weld pool by the base plate [18-21], environmental contamination [22-25] and the transfer of elements to or from the slag [19,21,26].
Majumdar: Combined effect of flux and welding parameters on chemical composition and mechanical properties of submerged arc weld metal, Journal of Materials Processing Technology, vol. 171, (2006), p. 223–231
Online since: October 2022
Authors: Marite Skute, Ilze Irbe, Anrijs Verovkins, Laura Andze, Gustavs Daniels Loris, Inese Filipova
Our hypotheses were: 1) MC variants with added bran will result in better fungal growth and mechanical properties; 2) bark will reduce mold growth and water absorption; 3) bigger shives particle size will decrease density and negatively affect mechanical properties and increase water uptake.
Mechanical properties comparison between granulometric groups.
Birch bark did show to significantly reduce water uptake by ~200%, but negatively affected mechanical properties.
Wösten, Fabrication factors influencing mechanical, moisture- and water-related properties of mycelium-based composites, Materials & Design, Vol 161, 2019, 64-71
Krijgsheld, Hydrophobin gene deletion and environmental growth conditions impact mechanical properties of mycelium by affecting the density of the material, Scientific Reports, 8, 4703
Online since: March 2014
Authors: Yu Ling Zhao
Deformation characteristics of determination of mechanical properties of experimental teaching of cohesive soil under Constrained Conditions Yuling Zhao School of Civil Engineering and Architecture, University of Jinan, Jinan, Shandong, China, 250022 cea_zhaoyl@ujn.edu.cn Keywords: Confining conditions; Cohesive soil; The deformation; The compression modulus Abstract.
The size of the deformation directly affects the safety of the buildings.
Factors that affect the deformation is mainly the geological structure, such as moisture content, density, soil after being compressed volume smaller feature is the compressibility of soil.
Concluded that many years of practice teaching, a lot of factors influencing the strength indexes of soil, mainly including moisture content, test method, the internal structure of soil mass, etc.
Acknowledgement The national natural science youth fund fund project: Experimental study of shape memory alloy micro mechanical behavior of (project approval no. : 11302082) References [1] Geotechnical experiment technology standards
Online since: December 2011
Authors: Liang Feng, Qi Bin Liu
Microstructure and Properties of Roller Surface Alloyed by Laser Feng liang1,a,Liu Qi-bin1,2,b 1 College of Materials and Metallurgy, Guizhou University, Guiyang 550003 2Guizhou Key Laboratory for Microstructure and Strength of Materials,Guiyang, 550003 a E-mail;fengliang7535333@126.com, b E-mail:qbliu2@263.net Key words: Metallurgical roller; Laser alloying; Microstructure; Properties.
Introduction Laser surface alloying (LSA) is an important modification technique which could enhance surface properties of materials.
It may be affected by two factors[5]: alloying elements such as Cr, Ni, Mo, Si elements exists in connecting zone, which raises the corrosion resistance.
Fig.3 XRD plot of the alloying layer Properties analysis of alloying layer Fig.4 presents the microhardness distribution of the alloying layer along the depth.
The comprehensive good mechanical properties of laser alloying contributes much to the rollers.
Online since: March 2008
Authors: Chong Hai Xu, Guang Chun Xiao, Rong Bo Zhang, Yu Mei Feng
Research on the Advanced Ceramic Die Materials and Their Properties Chonghai Xu1,2,a, Guangchun Xiao1 , Rongbo Zhang 1 and Yuemei Feng1 1 School of Mechanical Engineering, Shandong Institute of Light Industry, Jinan, China, 250353 2 School of Mechanical Engineering, Shandong University, Jinan, China, 250061 a xch@sdili.edu.cn Keywords: Ceramic die materials, Composition, Processing technology, Mechanical property, Engineering performance Abstract.
On the other hand, Al2O3 was used to increase the room temperature and high temperature mechanical properties and the anti-aging ability at low temperature.
Si3N4 ceramics, particularly the reaction sintered one, have good mechanical properties, wear resistance, thermal shock resistance and chemical stability.
Mechanical properties of the materials can basically satisfy the requirements of dies.
It should be noticed, however, that the application of ceramic dies is still affected by so many factors.
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