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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: July 2017
Authors: Inderpreet Singh Ahuja, Jatinder Kapoor, Kanwal Jit Singh
There are six input factors with three different levels.
It is used as a modification factors to the range of GRC.
The mean of output response or GRG for each level of input factors is shown in table 8
No Author (s) Work material Input factors Output factors and Optimized Results Results or conclusion 1.
Glass – Nature, Structure, and Properties.
Online since: May 2012
Authors: Hong Pu Kang, Jian Lin, Bin Hu
Based on the analysis of support effect under original support design at Hongmiao Colliery, the paper summarized the main factors causing the destruction of roadways under neighboring gob areas, and pointed that the low pre-tension of the former support system and the irrationality of auxiliary support components were the main reasons for the failure of roadway support.
They showed some properties, such as the low strength, loose and cracked, easy weathering, easy disintegration, water-swellable and etc.
They seriously affected the normal production of the coal mining face.
(In Chinese) [13] Jianbo Li: Study on mechanical property and support function of steel strip.
(In Chinese) [15] Zhiyong Sun, Jian Lian: Mechanical Characteristic of Steel Fabric Welded to Anchored Bolt.
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 2016
Authors: Volker Schulze, Frederik Zanger, Boris Matuschka, Nikolay Boev
The resulting data enabled the calculation of scaling factors that allowed the effective forces in the intended bar-turning tests to be determined.
The goal pursued with this setup was to determine the effects of damping properties and relevant cutting conditions on maximal impact forces.
Simulation-based Investigation Simulative characterization of mechanic properties and dynamic behavior.
This analysis of mechanical and dynamic properties provided so-called mastercurves that depict the viscoelastic indicators of each material over a wide frequency range.
So far, the dynamic properties of the measurement setup’s components haven’t been considered in the implementation of the simulation model.
Online since: September 2011
Authors: Hai Gang Sun, Yong Zhou
In addition, the thermal performance is influenced by other environment factors (for instance, pressure drop of cooling liquid flowing through heat sink will be determined by the temperature and flow rate) [5].
So the more efficient measure for thermal analysis of heat sink influenced by many other factors is to observe the variation of thermal performance with a single structural parameter.
Of which, the dynamic are comparatively intricate and synchronously determined by many other unpredictable factors, so only the static are discussed in this research including maximal temperature rise of heat elements, pressure drop and temperature rise of cooling liquid flowing through heat sink.
However, the predominant factor may change for different criterion.
Remarkably, some non-structural factors may have a slight effect on the criterions which fluctuate in a permissible narrow range.
Online since: June 2009
Authors: Ming Dong Bao, Xue Bo Xu, Hai Lin Sun, Jia Wen He, Dennis G. Teer
Teer4,e 1 School of mechanical engineering, Ningbo University of Technology, Ningbo 315016, China 2 State Key Lab. for Mechanical Behavior of Materials, Xi'an Jiaotong University.
Adhesion properties were tested by a Teer ST2200 scratch tester using a Rockwell diamond tip (200μm radius) with load increased from 10 N to 85 N at constant sliding speed of 10mm/min.
Results and Discussion Synthesis and Properties of Films.
Conclusions The excellent properties Cr-N base coatings were deposited using magnetron sputter by changing deposition parameters.
Workpiece material welding on cutting edge and flute of microdrill was one of the key factors to Copper foil PI Resin Nail head Diameter of hole Wall of hole 0.0 0.2 0.4 0.6 0.8 1.0 0 50 100 150 200 250 300 Time (second) Friction coefficient TiN+Cu CrN+Cu affect the microdrill life.
Online since: October 2011
Authors: Xin Nan Zhao, En Qing Xie, Li Zong Liu
Analysis and solution of the influence of mine water on the electric and hydraulic control system Lizong Liu 1,a, Xinnan Zhao 2,b and Enqing Xie 3,c 1China Coal Research Institute, Hydraulic support research department, Beijing, 100013, China 2China Coal Research Institute, Hydraulic support research department, Beijing, 100013, China 3China Coal Research Institute, Hydraulic support research department, Beijing, 100013, China a sddh818@163.com, bzhaoxinnan6@hotmail.com, cxienqing@yahoo.com.cn Keywords: Mine water, hydraulic support, the electric and hydraulic control system, influence factors, countermeasures.
Influence factor Mine water is not chemically pure water, but a complex solution, its physical properties and chemical composition is along with the change of time and space.
In addition to clean mine water the other four kinds of water are likely to affect the electric and hydraulic control system.
Mechanical impurities and suspended solids.
Huiling Shang on the relief valve failure of the deep reason do iron spectral analysis [2], is shown in Fig.1, through the taken by the iron spectral pollutants in the relief valve failure to reveal the map of the micro factors: metal particles, coal, by oxide and scale, the oil content of the mixed pollution degradation etc, so that causing clogging and failure.
Online since: July 2011
Authors: Chao Lung Hwang, Chun Tsun Chen, Le Anh Tuan Bui, Hsiu Lung Huang, Sheng Szu Peng, Yuan Yi Yan
The gradation, particle size of aggregate, and mass ratio of aggregate to cement are the primary factors affecting porosity, permeability and compressive strength of PCM.
Water-to-cement ratio has minor effect on properties of pervious concrete [7].
The mixture properties of SF Paste and SF Mortar are shown in Table 1.
Both void ratio and permeability are important parameters for pervious concrete and affects the compressive strength of pavement.
Hashimoto, Properties of porous concrete with high strength, Proceedings 8th international symposium on concrete roads, Lisbon, (1998) p. 171-177
Online since: June 2014
Authors: Yuh Huei Shyu
So far, no known energy satisfies all properties mentioned.
This challenge will become not urgent if we can find a renewable energy satisfied all properties mentioned.
The answer is affirmative if we can find a renewable energy satisfied all properties mentioned.
Shyu pointed out that when discussing energy, there were three factors that need to be considered.
These three factors were energy source, mechanism and force.
Showing 14101 to 14110 of 25943 items