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Online since: September 2011
Authors: Ola Jensrud
The run-out speed and requirement linked to surface or micro structure are the productivity limiting factors.
Alloy developments with strong focus on extrudability and mechanical properties have been done at Raufoss [1, 2] through many years in cooperation with SINTEF and NTNU, [3].
In table 2 mechanical properties of the alloys are listed.
Table 2: Minimum mechanical properties of extrusions, from European Norm, aluminium and aluminium alloys, extruded rod/bar tube and profile, no. 755.
Reiso, Extrudability and Mechanical Properties of some 7XXX – series Alloys, Conference Proceedings of ET 96 (1996)
Online since: November 2017
Authors: Chang Woo Lee, Dong Geun Lee, Chang Lim Kim, Young Sin Choi, Gun Hee Kim, Byoung Soo Lee
Mechanical properties data onto investigated CP Ti.
There are many reasons for bad fatigue life, especially strong influence factors are porosity.
Therefore, according to the existing literature, if the pore size is smaller than 100 μm, It is considered that the fatigue characteristics are not adversely affected in addition to the mechanical properties.
Mechanical properties data onto investigated Ti-6Al-4V.
Lin, Comparison among Mechanical Properties of Investment-Cast c.p.
Online since: January 2013
Authors: Chia Chun Yu, Te Chi Chen, Cherng Shing Lin, Shih Cheng Wang, Chian Yu Peng
Buildings suffered varied degree of attack from elevated temperature and thermal radiation, which leads to changes in physical, chemical and mechanical properties, might result in considerable damage to the buildings and their structure.
Numerical Simulation Model This paper uses Fire Dynamics Simulation (FDS) software to analyze thermal flow field of fire field, and then enter the temperature boundary conditions of simulation result in the thermal flow computation software PHOENICS to calculate temperature and mechanical properties inside the beam, in order to investigate variations in temperature and mechanical properties in the beam after undergoing a fire.
Factors of strength deduction of steel bars and concrete materials undergoing fire are diverse, of which, high temperature deriving from combustion in the fire field is the major parameter [7].
And the duration of influence from fire is also a factor that contributes to various changes in mechanical property.
The material properties of reinforced concrete inside the beam will change with increase of temperature.
Online since: October 2014
Authors: Nazrul Idzham Kasim, Mohd Azam Musa, Akhtar Razul Razali
Negligible factors in bulk materials, such as grain-size effects, have proven inappropriate to be neglected for micro-forming processes.
The Procedure Mechanical properties analyses on thin sheet metal had received vast studies worldwide covering some popular engineering material [3].
Apart of determination of mechanical properties through uniaxial testing which was conducted on each strip, measurement of grain structure is also important because grain size does have an influence on the material mechanical properties [2-4].
This has resulted in a lesser grain density, which may be affecting its mechanical properties.
Discussions – Size Effect and Material Stress–Strain Relation Many investigations have been conducted elsewhere [3] and have shown that sheet metals of different grain sizes show different mechanical properties.
Online since: September 2024
Authors: Jamel Neji, Maher Chakhari, Nawel Salem, Rachida Idir
The addition of MPW fibers to lightweight concrete used as filling material in buildings’ slope forms and bridge access ramps showed potential for enhancing certain mechanical properties, but their effects were influenced by factors such as curing age and fiber dosage.
Mechanical properties of concrete reinforced with alternative fibers.
Determining the mechanical properties of concrete.
Determining the mechanical properties of concrete.
Determining the mechanical properties of concrete.
Online since: November 2012
Authors: Yi Guang Li, A.A. Wahab, Siti Nur Mariani Mohd Yunos, Siti Juita Mastura Mohd Salleh, Qamarul Ezani Kamarudin, Mohammad Fahmi Abdul Ghafir, M.F. Yaakub, Mohd Fikri Mohd Masrom
Analytical-parametric-based creep life estimation model combined with the Creep Factor approach was developed and integrated with an existing engine performance model to allow the estimation of various hot section component creep lives and the computation of the Creep Factors.
Many studies have been conducted in order to understand how these changes affect the creep life.
Using an analytical-parametric-based HP turbine blade creep life prediction model, the mechanical and thermal stress analyses were performed on the HP turbine blades.
Shusen, “Creep behaviors and effect factors of single crystal nickel-base superalloys,” Materials Science and Engineering: A, vol. 499, no. 1–2, pp. 352–359, 15 2009
Harada, “A factor analysis of creep rupture properties of Ni-base superalloys,” Journal of the Japan Institute of Metal, vol. 69, no. 8, pp. 691–694, 2005
Online since: December 2011
Authors: Z. Azari, S. Bouzid
The optical and mechanical variation properties caused by degradation are originally due to the existence of defects (superficial cracking, scaling, craters, corrosion …etc.).
Indeed, the erosion is affected by many factors such as characterizes of the impact particles (e.g. size, shape, density, hardness and fracture toughness), the properties of target materials (e.g. hardness, fracture toughness and surface roughness) and the test conditions (e.g. particle speed, impact angle and ambient temperature).
Among all these properties, the hardness HV and the fracture toughness KC are the two main properties influencing the erosion [12, 13].
There are many erosion parameters that affect their properties (velocity of air flow, grain sizes, impact angle, and so on…).
The aim of this study is to define the important characteristics as the crack depth and the roughness surface and thus their influence on optical and mechanical properties.
Online since: October 2020
Authors: Sergio Neves Monteiro, Gilmar Cunha da Silva, Verônica Scarpini Candido, Alisson Clay Rios da Silva, Foluke Salgado de Assis
The results showed that poly (methyl methacrylate) (PMMA) maintained its tensile mechanical properties up to 105°C.
This polymer presents good optical properties, mechanical resistance, good resistance to atmospheric agents and low absorption of water [5,7].
However this procedure decreases the PMMA optical properties [8,9].
Moreover, the nanocomposite production technique, another factor observed is the exposure temperature of the PMMA that may influence its mechanical properties [5].
The mechanical properties of PMMA revealed that the temperature may be a variable, which might contribute to increase the tensile strength.
Online since: February 2014
Authors: Ru Heng Wang, Bin Jia, Fan Yang, Kun Lin Sun
Based on data analysis, the dynamical mechanical behavior of concrete with high temperature is affected by not only the strain rate effect whose influence keeps on decreasing with temperature increasing, but also the high temperature weakening effect.
According to the investigation, research findings in allusion to dynamic properties of concrete with high temperature are still rare.
In this paper, with the experimental system of high-temperature split Hopkinson pressure bar (SHPB) and microwave heating technique, a set of high temperature SHPB experiment technique is designed, multiple sets of tests at high and normal temperature are carried out, then the effect of temperature and loading velocity on mechanical properties are analyzed and compared, finally dynamical stress-strain curves of concrete with high temperature are obtained, and dynamical mechanical behavior is analyzed.
At temperatures below 600 ℃, the peak stress of concrete improves with the strain rate increasing under the same temperature, while at the same strain rate, the peak stress declines with temperature increasing; namely, it shows the significant strain rate effect and temperature effect in the dynamic mechanical properties of concrete with high temperature.
High-temperature concrete can be regarded as a porous material, the matrix material of which is aggregate with brittle characteristics and cement colloid, thus its dynamic mechanical properties will not appear in the plastic yield platform and dense stage (such as foam aluminum [18]), but in the compaction breakage stage.
Online since: March 2025
Authors: Mohamed Abdelgawad Gebril, Farag M. Shuaeib, Mohammed J. Alshibli
Additionally, research [24-25] also examined how Si content affects the mechanical properties of the aluminum alloy.
This research is important as it highlights how these factors affect the alloy's hardness.
A Box-Behnken design generally varies three factors at three levels each (-1, 0, and +1), resulting in a total of 15 experimental runs for three factors.
Effect of silicon content on the mechanical properties of aluminum alloy.
Aging impact on mechanical properties and microstructure of Al-6063.
Showing 4651 to 4660 of 26166 items