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Online since: January 2014
Authors: Lian Guang Wang, Jia Yang, Wen Yu Hou
Especially the FRP plate is a kind of resin material and its physical and mechanical properties will change with temperature and time.
In recent years, many domestic and foreign experts and scholars put forward the method which used FRP sheets or plates to strengthen structures and research on its mechanical behavior [1-7].
The temperature and creep effect are the main factors impacting on the working mechanism of FRP.
Simultaneously, under external loading, the relative slip occurred on the interface between FRP plate and concrete causes the redistribution of stress and then influences mechanical behavior of component.
The elastic modulus of FRP plate affected by temperature and time is defined by the equation as below
Online since: September 2003
Authors: Xin Wei, H.W. Du, Y.L. Fang, Chao Yuan Wang
The results show that the properties of composition in asphalt concrete have significant influence on instantaneous cutting forces.
The factors affecting cutting forces of concrete were analyzed.
(cm) -2.5 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 Fz (N) 0 20 40 60 80 100 120 Material: asphalt concrete Singlediamond tool Dry cutting ap=30mm vc=0.05m/s (0.01 s) µ Fig.2 Relationship between cutting force signals and composition phases of asphalt concrete in cutting process Fig.3 Relationship between cutting forces and depth of cut in asphalt concrete cutting process The Factors Affecting the Cutting Forces in Concrete Cutting Process. (1) Depth of cut ap.
The mechanical properties of the composition influence the cutting mechanism and consequently the cutting forces.
The instantaneous cutting forces in asphalt concrete cutting process are influenced significantly by the properties of concrete composition.
Online since: October 2006
Authors: Ki Hyun Yoon, Ji Won Choi
Our previous study [1] revealed that CaTiO3 film (K~160, tan δ ~0.003+=0.0003 and TCK~ -1340 ppm/℃ at 6 GHz) and MgTiO3 film (K~ 16, tan δ~ 0.0008+=0.0001, TCK~ +260 ppm/℃ at 6 GHz) exhibited the quite different microwave dielectric properties.
Thermal stress can lead to mechanical (structural) as well as to functional (electrical or optical) failures [4], and this stress is a very significant factor affecting the dielectric properties of materials.
It was reported that the dielectric properties were affected by thermal stress in the interface between the film and the substrate [6].
In this study, the dielectric properties of (300-X) nm MgTiO3/(X) nm CaTiO3 thin films have been investigated with correlation between interface and stress induced by dielectric layers with heattreatment.
The microwave dielectric properties were measured using a circular-patch capacitor geometry with a network analyzer (HP873Es, Aligent) [8].
Online since: February 2021
Authors: Zena K. Abbas, Zahraa Alaa M.A. Ali Khan
The factors that affect the behavior of an RCC dam had been studied.
It should be ensured that the aggregate segregation would not occur, especially in the lower portion of the lift, to maintain good mechanical properties and density [8, 37].
Sravani, Study on Mechanical Properties of Concrete Using Silica Sand as Partial Replacement of Cement, SSRG – IJCE 4 (5) (2017) 34-37
A, Factors Influencing Ultrasonic Pulse Velocity in Concrete, Revista IBRACON de Estruturas e Materiais 13 (2) (2020) 222-247
Narjes, Classification-Based Regression Models for Prediction of the Mechanical Properties of Roller-Compacted Concrete Pavement, Applied Sciences 10 (11) (2020) 1-22
Online since: April 2013
Authors: Ge Chen, Jia Li, Shu Jia Li
Composite made of such fabrics has been widely used in various areas such as aerospace, military, transportation and energy for its many advantages including light weight, high strength and good mechanical properties.
The which is front side tension decreases, and the which is back side tension increases; Euler's formula on flexible body can be applied here 0: or In this formula, is warp angle;μ is friction factor between the weft and the warp(μ refers to dynamic friction factor when relative motion happens between wefts and warps;μ refers to static friction factor when there is no relative motion).
Assuming that the frictional factor between yarns is =0.4, =, Assume the density of reed is 150/10cm and the reed width is 50cm.
We can zoom up the result of resistance by multiplying a correction factor.
Journal of Textile Research,2009,30(8):34-38 [4] XU Haoyi.On the nature of beating-up and factors affecting its friction [J].
Online since: September 2011
Authors: Amir Ghazanfari, Ahmad Assempour
A New Calibration Method for FLCs in the M-K Frame-Work Amir Ghazanfari a, Ahmad Assempour b Center of Excellence in Design, Robotics and Automation, Department of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran aa_ghazanfari@mech.sharif.edu, bassem@sharif.edu Keywords: Forming Limit Curve; M-K Method; Inhomogeneity Factor; Empirical Law Abstract.
To achieve this goal, many experimental FLCs were collected from the literature and the values of the initial inhomogeneity factors were determined for them with trial and error aproach.
Introduction The major problem in determining the FLC in all numerical models is requirement of some experimental results other than usual material properties.
The required material properties of safe region and groove region depend on hardening law and yield function.
Applying Swift’s hardening law and Hill’s 1948 yield function ‎[5], the required material properties are thickness ratio (tb/ta), strength constant ratio (kb/ka), strain hardening exponent (nb, na), stain rate sensitivity exponent (mb, ma), anisotropy factor (rb, ra) and initial strain (e0).
Online since: November 2022
Authors: Ziyauddin Seikh, Golam Kibria, Rafiqul Haque, Mukandar Sekh, Shamim Haidar
Good microstructure in the finished product is possible to obtain as powder particles are small and homogenous, resulting in improved mechanical properties.
When RHA is utilized, mechanical properties improve [20,21].
Measurement of tribological properties The tribological properties of cylinder-shaped pins were examined by using the Pin-On-Disc system.
Shankar, Effect of Mechanical Properties on Rice Husk Ash Reinforced Aluminum alloy (AlSi10Mg) Matrix Composites., Procedia Eng., 64(2013) 1505–1513
Ramanaiah, Investigations on mechanical properties of aluminum hybrid composites, J.
Online since: April 2013
Authors: Nils Bay, Peter Søe Nielsen, Morten Storgaard Nielsen
Flexible pipes are constructed in a layer structure in which each layer adds specific properties to the pipe such as; collapse strength, fluid integrity, tensile strength etc. [1].
The objective is to find the influential factors by means of production testing and FEA.
Roll forming has been successfully modelled in literature [4-6], but the carcass winding process is not easily idealized because of several factors that affect profile deformation that are not easily accounted for.
The observations suggest that tongue height and inlet angle with respect to the mandrel is affecting the QL deformation.
Mandrel size related factors such as profile pitch angle and entry angle are expected to affect dividing point movement - also through increased profile strains.
Online since: March 2008
Authors: Da Ping Wan, Hai Feng Wang, De Jin Hu, Hong Bin Liu
The effects of processing parameters on the properties of the laser textured samples were investigated.
Laser surface cladding of alloys or ceramics on the surface of the workpiece can produce refined microstructures with unique mechanical properties by rapid solidification processing.
Mechanical Properties of the Dimples.
In the experiment, the magnitude and distribution of single pulse energy is the key factor to affect the surface roughness profile.
It shows the magnitude and distribution of single pulse energy is the key factor to affect the surface roughness profile.
Online since: March 2017
Authors: Peter Palček, Mária Chalupová, Zuzana Dresslerová
The microplasticity determines various properties of the metals, such as fatigue strength, dimensional stability, and various relaxation phenomena, such as internal damping (internal friction) behavior.
Total internal damping affects a number of different, interacting and functioning factors, such as defects in the crystal structure, the movement of dislocations, plastic deformation, grain boundary sliding, elastodynamic and magnetoelastic phenomena.
Mechanical properties of pure magnesium are low.
Therefore, the entity lies in resolving the contradiction between damping capacity and mechanical properties and to create magnesium based alloys which have high damping capacity and sufficient mechanical properties [9,10].
Ou, Development of the novel ferrous-based stainless steel for biomedical applications, Part I: High-temperature microstructure, mechanical properties and damping behavior, J.
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