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Online since: February 2012
Authors: Zhan Qiang Liu, Xing Ai, Ji Gang Liu, Bao Lin Wang
Titanium alloys are very interesting materials for industrial applications and most titanium alloys have been designed for aeronautical applications, due to their excellent specific properties such as high strength-to-weight ratios, maintaining its strength at high temperatures.
The physical and mechanical properties of Ti-17 are listed in Table 2.
The temperature generated during a machining operation is influenced mainly by the properties of the workpiece, tool material and the machining parameters used.
In many cases, the temperature remains sufficiently high to adversely affect the performance of cutting tools [11].
Therefore, high machining temperature is one of the main factors limiting the machinability of the Ti-17 alloy.
Online since: December 2013
Authors: Chung Hao Hsieh, Jian Long Kuo
Therefore, the factors defined for Response Surface Method is shown in Table 2.
The temperature and pressure are selected as noise factors.
By setting the learning factors and which are larger than 4.0.
Two levels are defined for the control factors.
Therefore, the orthogonal array has two factors and two levels.
Online since: October 2006
Authors: Lars Pape, Horst R. Maier, Michael Modigell
A high-temperature Couette rheometer has been developed to analyze flow properties of semi-solid alloys up to temperatures of 1500°C.
Differently performed experiments clearly show its shear-thinning and time-dependent flow properties with a yield stress.
Such metallic suspensions show shear-thinning and time-dependent flow properties and exhibit a yield stress.
After an isothermal shearing period of 1h, step-change in shear rate experiments as well as linear shear stress ramps are applied to evaluate the shear thinning, time-dependent flow properties and the yield stress.
The left side of figure 3 clearly indicates the shear-thinning and time-dependent flow properties.
Online since: December 2011
Authors: Xiao Fei Liu, Yong Cheng Chen, Ya Ge Wang
Picking-up and clearing parts are the key device of the important work parts for the line chili harvesting machine, which directly affect the performance of the harvesting machine.
As a "red industry" in Xinjiang, and currently or artificial picking harvest, harvest season when busy season, labor is very nervous, and there is a labor intensity and low efficiency, cost is high, which seriously restrict factors chili industrialization process.
The early stage of the material properties of chili and planting mode research: picking on the current chili breadth of planting pattern design; Roller diameter according to chili plant height and mechanical speed; the spiral spring tooth arrangement, spacing according to the properties of material chili fruits and decide that favor picking chili.
Spring tooth use spring steel wire around and become, for spring tooth is rigid, picking on the damage for larger, chili reduce the damage rate, increase mechanical properties, in spring steel wire surface with buffer role of suit rubber.
Reduce the impurity rate, increase mechanical properties.
Online since: December 2011
Authors: Cui Jiao Liao, Qing Ming Weng, Hua Xu
The forming of the interstice pore is concerned with these factors such as the molding density, the powder particle size, the particle distribution, the shape of the particle and the compaction property of the powder.
So, the generate pore is decided by these factors such as the style of the inducer, the particle size, the shape of the particle and the added amount.
The sintering temperature is an important technology parameter which decides the mechanical property of the diamond segment.
The pressing pressure is another important technology parameter which decides the mechanical property of the diamond segment.
Scanning electron microscopic study and mechanical property examination of a bond bridge: Development of a porous metal bonded diamond wheel.
Online since: July 2014
Authors: Wei Chen, Xiang Peng Li, Ting Ting Chen, Xiao Yang Wang, Chao Chao Ma
.; class Ⅰ fly ash; medium sand(with fineness modulus of 2.46); gravel(with the maximum size of 26.5mm); polycarboxylic acid superplasticizer; the chopped basalt fiber, which is made in TuoXin Basalt Industrial Co. of Si Chuan province, Main mechanical property of basalt fiber is shown in Table1.
Table 1 Main mechanical property of basalt fiber Diameter (μm) Density (kg.cm-3) Elasticity modulus (Gpa) Tensile strength (Mpa) Elongation at fracture (﹪) 15 2.65 95~115 3300~4500 2.4~3.0 Experiment Design.
Test Results and Theoretical Analysis Cracking load and factors.
L-0-0 L-1-12 L-2-12 L-1-30 L-2-30 Fig. 2 Collapse state of beams in shear compression section Cracking Development and Factors.
Based on Fig.1 and the principle of composite materials, the multiply of the volume ratio and the aspect ratio of fiber which is the main parameter to affect the mechanical properties of fiber concrete can be defined as the characteristic parameter of basalt fiber [5] and can be expressed as .
Online since: April 2012
Authors: Xian Li Liu, Fu Gang Yan, Yi Wen Wang, Ke Qiang Li, Wei Ji
Design of PCD drill Geometry Angles Material and edge types of PCD were factors that affected CFRP hole quality.
The two factors affected hole quality deeply.
Experimental material used was CFRP whose properties are given in Table. 1.
Table 1 Mechanical properties of multidirectional CFRP Item Reinforcement material Matrix material fiber orientation Volume rate of carbon fiber Thickness Parameter T300 AG-80 epoxide resin (±45°/0°/90°/0°)s 60±5% 5 mm Cutting tools were PCD drills with straight flutes.
For axial load and hole exit quality, cutting edge types, clearance angle and second point angle were primary factors, and first point angle was secondary.
Online since: September 2016
Authors: Emran Baharudin, Luke Bisby, Tim Stratford
Amongst other factors, the assumed tensile strength of the concrete is crucial to accurately predict response.
Concrete thermal properties were based on recommendations from Eurocode 2 [6] in the model.
Material thermal properties and all other heat transfer parameters follow recommendation from Eurocode 2 [6].
The assumed material properties adopted for the model are shown in Table 1.
Various factors may be contributing to this behaviour.
Online since: November 2010
Authors: Dong Mei Wang, Qiang Hua Liao, Zi You Bai
Energy absorption Properties of Folded Honeycomb Structure Consisting of Corrugated Paperboard Funded by the National Natural Science Foundation of China (No 50905120).
China sxxawdm@sina.com 2 School of Mechanical and Electrical Engineering, Shenzhen Polytechnic, Shenzhen 518055, P.
The cushioning properties of the folded honeycomb structure can be changed by modifying the size and basis paper.
Effect of corrugated size on cushioning properties of folded honeycomb structure.
In order to find out the factors affecting the cushioning properties of the folded honeycomb structure, we considered the relative density of corrugated sandwiches which is correlated to the shape and size of corrugates.
Online since: August 2011
Authors: Jian Jun Qu, Feng Yan Sun
Then friction material properties are very important on the output characteristics of TWUSM.
Properties of friction material directly affect motor’s conversion efficiency, service life, running noise, and drive stability, etc.
These properties are the basic requirements for friction material which will be applied to TWUSM.
This is a problem of multi-factor formula design.
Proper content ranges of modified materials were determined to improve the mechanical properties and maintain the tribological properties of EK matrix.
Showing 14111 to 14120 of 26129 items