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Online since: May 2014
Authors: Xiao Tong Ma, Guang Long Liu
On this basis the foundation settlement factors was analyzed systematically that focus on the elastic modulus of pile, pile spacing, pile diameter and pile length in foundation treatment, especially for the characteristics parameters of contact element.
Because the roadbed left and right sides are symmetrical, in order to reduce the computing workload, the physical and mechanical properties of cement-soil compaction pile is adopted which has been disposed to replace the original pile, and the half structure for numerical calculation of composite foundation is taken.
Reasonable mechanical model has been established, appropriate mechanical parameter has been chosen and then the mechanical characteristics of structure-soil surface is understood in depth.
Two element parameters which affect pile settlement significantly is analyzed, that is ultimate shear stress and shear modulus.
On this basis the foundation settlement factors is analyzed systematically.
Online since: October 2007
Authors: Yorinobu Takigawa, Kenji Higashi, Tokuteru Uesugi
This result indicates that the binding energy between dopant and oxygen vacancy affects the phase stability as well as the change in the axial ratio, c/a.
Microcracking leads to a decrease of the mechanical properties; this could explain the failure of implants after several years in vivo.
Another factor must be considered to explain this trend. 1.016 1.018 1.020 20 40 60 80 100 Axial Ratio, c/a Monoclinic Fraction (%) Fig.2 Relationship between axial ratio, c/a and monoclinic fraction after the accelerated exposure tests in hot water at 413K for 60h.
Since the distance is inversely related to the binding energy in general, this result possibly suggests that the binding energy between dopant and oxygen vacancy affects the phase stability as well as the axial ratio, c/a.
The ion radius of dopant must be an important factor for the phase stability of TZP
Online since: April 2016
Authors: Adam Lipski
The S-N curve and the fatigue limit are basic parameters defining fatigue strength properties of materials subject to cyclic load.
They are widely used in fatigue life determination methods while negatively affecting the accuracy of this estimate [9, 10, 11, 12].
Hoverer, the inclination factor of the Wöhler curve (known also as S-N curve) must be known.
Lipski A., Boroński D., Use of Thermography for the Analysis of Strength Properties of Mini-Specimens, Materials Science Forum, 726, 2012, 156-161
Strojniski Vestnik-Journal Of Mechanical Engineering, 60 (9), 2013, 549-560
Online since: July 2015
Authors: Lisa M. Dangora, Jennifer L. Gorczyca, James A. Sherwood, Cynthia J. Mitchell
A finite element model that removes the need for knockdown factors has the potential to save time, money, and material in the design and manufacturing processes.
While this approach is relatively quick and requires relatively little computational power, it does not consider any mechanical properties of the fabric.
The extensional properties of the fiber tows as well as the stitching were determined.
No tensile properties were assigned to the shell elements.
Assessment of the tensile properties of coir, bamboo and jute fibre.
Online since: August 2023
Authors: Oleksandra Horbachova, Serhii Mazurchuk, Oleksii Tsapko, Yuriy Tsapko
The studied plywood is characterized by reduced moisture absorption properties.
However, its physical and mechanical properties, such as strength and water resistance, do not fully satisfy consumer requirements.
The analysis of the results showed that the studied physical and mechanical properties were affected by both the type of construction and the applied heat treatment.
To determine the planned characteristics of the obtained plywood, physical and mechanical properties were determined, in particular, bending and chipping strength.
Murakami, Synthesis of wood-based epoxy resins and their mechanical and adhesive properties, Journal of Applied Polymer Science. 102 (2006) 85-92. doi: 10.1002/app.24433 [16] S.
Online since: May 2012
Authors: Xiao Liu, Lei Zhao
Through the analysis of recycled concrete as structural components in the deficiencies of strength, seismic and fire resistance, indicates the importance of anti - fire properties of recycled concrete - filled steel tube.
In the future, in the wake of the building high-rise, large-scale and uses of the compound, fire factors will gradually increase and the fire scale will expand too.
Conclusion In order to deeply understand the difference between the recycle concrete -filled in steel tube and ordinary concrete column on the mechanical properties in the fire, it is necessary research recycle concrete -filled in steel tube refractory performance and design methods on the fire by theory and experiment.
At the same time, it is necessary research mechanical properties and work behavior to recycle concrete -filled in steel tube after fire, and formulates the repair reinforcement measures.
Recycled concrete high temperature properties [D].
Online since: November 2025
Authors: Abdelhafid El Ouassidi, Bilal El Monhim, Kamal Amghar, Majdouline Alla, Ismael Driouch, Yassine Rharrabi, Hicham Bouali
The increase in the temperature of photovoltaic (PV) cells is a critical factor that negatively affects the efficiency of converting solar radiation into electrical energy.
The operating temperature of photovoltaic cells is one of the most influential factors negatively affecting the efficiency of solar panels.
Moreover, the physical properties of semiconductors change under the effect of heat, leading to a decrease in the voltage and current generated by the solar cell [19-21].
Thermophysical properties [50, 51].
Peruchi, Identification and Analysis of Impact Factors on the Economic Feasibility of Photovoltaic Energy Investments, Sustainability, 12(17) (2020) 7173
Online since: November 2025
Authors: Tahseen M. Salman, Saad K. Shather, Baraa M.H. Albaghdadi
MAF provides uniform finishing, improves surface properties like fatigue resistance by inducing compressive stresses, and is ideal for complex geometries.
The causes of fatigue failure are numerous, including factors such as: Fig. 5.
Environmental Factors: Exposure to aggressive environments (chemicals, humidity, etc.) can accelerate fatigue. 8.
Surface Mechanical Attrition Treatment (SMAT): SMAT is known to improve fatigue properties through Nano crystallization and inducing compressive residual stresses. 2.
In 2017, Jiang Guo et al. [22] studied the effects of abrasive type and size on polishing force, MRR, wear of magnetic abrasives, and surface properties quantitatively.
Online since: June 2012
Authors: Sheng Qiang, Xiang Rong Wang, Zhi Qiang Xie, Zhan Qiang Zheng
Accurate temperature process and mechanical properties of materials is the key to obtain the accurately stress field of the dam.
Affected by various factors, even if the temperatures of the temperature history data are measured in locale, the calculation stress of the dam may has much difference from the actual value of the dam, because the actual mechanical parameters of the dam has big difference from the laboratory’s which is obtained in ideal lab condition.
On the base of the thermal factors, referring to the data from the five-direction strain gauges, the mechanics properties is inversed and then the corresponding stress can be got.
Case 1 is the thermal factors inversion and feedback case.
And then the whole construction is simulated with the lab mechanics properties.
Online since: September 2014
Authors: Giosuè Boscato, Salvatore Russo
Modal identification techniques are used to estimate the dynamic properties of a structure based on experimental data.
The mechanical properties of the pultruded profiles employed are listed in Table 1.
Mechanical properties of the PFRPs profiles, experimental data Mechanical properties Symbol Value Longitudinal tensile strength σz 350 MPa Transversal tensile strength σx = σy 70 MPa Longitudinal elastic modulus Ez 24.4 GPa Transversal elastic modulus Ex = Ey 9 GPa Shear modulus Gxy 3.6 GPa Shear modulus Gzx = Gzy 3.2 GPa Poisson’s ratio νzx = νzy 0.23 Poisson’s ratio νxy 0.09 Density γ 1850 kg/m3 Fibres percentage Vf 48% Finite Element Analysis (FEA) In order to choose the most correct settings and procedure for dynamic identification, a preliminary modal analysis was run on the whole structure by means of the calculation code Strand7.
Russo, Free vibration of pultruded FRP elements: Mechanical characterization, analysis and applications, J.
Russo, On mechanical performance of different type of FRP beams as reinforcement of pedestrian bridge.
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