Experimental Research on Cement Treated Permeable Base of Expressway

2013 ◽  
Vol 361-363 ◽  
pp. 1772-1777
Author(s):  
Ying De Hu ◽  
Mao Dong Xiong
Keyword(s):  
Experimental Research ◽  
Basic Principle ◽  
Effective Porosity ◽  
Orthogonal Test ◽  
Design Approach ◽  
Test Design ◽  
Mixing Ratio ◽  
Test Results ◽  
Key Factors ◽  
Orthogonal Test Design

orthogonal test design approach is adopted to analyze and research several key factors like gravel drainage foundation layer strength, permeation coefficient, effective porosity to conclude the basic principle for indoor mixing ratio. On the basis of the indoor experimental achievements, the CTPB foundation layer of experimental road is designed and the test results show that the indexes reach the forecast effects.

Characteristics Analysis of Plane Processing of Sapphire Corundum Crystals

2013 ◽  
Vol 706-708 ◽  
pp. 20-23
Author(s):  
Ning Wang
Keyword(s):  
Surface Roughness ◽  
Visual Analysis ◽  
Processing Parameters ◽  
Orthogonal Test ◽  
Test Design ◽  
Test Results ◽  
Key Factors ◽  
Characteristics Analysis ◽  
Orthogonal Test Design

In order to solve the problems of plane processing of the sapphire corundum crystals, an orthogonal test design was put forward to investigate the key factors that influencing the quality of grinding and polishing, and the optimal plane processing parameters were obtained by visual analysis. The samples of the sapphire corundum crystals were processed using the optimal plane processing parameters, and the surface roughness was also detected using Mahr roughness instrument, the test results show that the plane quality is improved dramatically.

Application of Matrix Analysis in Multiple Index Orthogonal Test Design

2012 ◽  
Vol 516-517 ◽  
pp. 558-562 ◽  
Author(s):  
Xiao Ling Wei ◽  
Xiao Rui Li ◽  
Jie Hua Wang ◽  
Zhi Wen Chen
Keyword(s):  
Test Data ◽  
Orthogonal Test ◽  
Matrix Analysis ◽  
Test Design ◽  
Test Results ◽  
Optimal Plan ◽  
Test Analysis ◽  
Orthogonal Test Design ◽  
Scheme Selection ◽  
Influence Degree

In Multiple Index Orthogonal Test Design, the key question is how to determine the influence degree of each test index on the whole test results and according to the influence degree to get test data calculation and eventually gain the optimal plan to achieve the purpose of orthogonal test design. A method of matrix analysis is introduce in this article, with which the weighs of the factors and levels having influences on the tests’ results can be calculated, and then the optimal plan of multiple index orthogonal test and the important order of the factors’ influences on the tests’ index values can be determined according to the weights. Using this method to carry out the test analysis of the passing performance of the swamp bulldozer, the optimal scheme selection problem of Multiple Index Experiment of the Orthogonal Test can be solved, and obtains feasible experimental results .

Experimental Research on Vibrating Compaction Characteristics of River Sand

2012 ◽  
Vol 253-255 ◽  
pp. 1114-1118
Author(s):  
Ying Yong Li ◽  
Wei Dong Cao ◽  
Shu Tang Liu
Keyword(s):  
Moisture Content ◽  
Experimental Research ◽  
Orthogonal Test ◽  
Dry Density ◽  
Test Design ◽  
Land Resources ◽  
River Sand ◽  
Compaction Characteristics ◽  
Orthogonal Test Design ◽  
Density Values

River sand was used for filling embankment in highway for saving land resources and protecting farmland. In order to explore vibrating compaction characteristics of river sand, the effect of vibrating frequency, vibrating time, and moisture content on the indexes of dry density and modulus were investigated using orthogonal test design. The results indicate that the dry density values increase with the increase of three factors (vibrating frequency, vibrating time, and moisture content), while the modulus values increase with the increase of frequency and vibrating time, but decrease first then increase with the increase of moisture content. Vibrating frequency has a significant effect on dry density, but both vibrating time and moisture content have no significant effect, while three factors all have no significant effect on modulus.

The Orthogonal Test Design and Analysis for High Additive Fly Ash Firebrick

2012 ◽  
Vol 174-177 ◽  
pp. 318-321
Author(s):  
Shao Xia Gao ◽  
Bao Chu Yu ◽  
Chao Gao ◽  
Li Zhi Wu
Keyword(s):  
Fly Ash ◽  
Industrial Production ◽  
Orthogonal Test ◽  
Test Design ◽  
Test Results ◽  
Systematic Analysis ◽  
Orthogonal Test Design

In order to arrange the limited test for considering the influence of high additive fly ash firebrick to different element comprehensively and effectively, the authors arrange the orthogonal test and put forward the best proportion scheme and propose industrial production properly through the systematic analysis of the test results.

scholarly journals Orthogonal test design for optimizing the extraction of total flavonoids from Flos pueraria

2014 ◽  
Vol 8 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Cai Fei ◽  
Xiao Chen ◽  
Chen Qingjie ◽  
Ouyang Changhan ◽  
Zhang Ruixue ◽  
...  
Keyword(s):  
Orthogonal Test ◽  
Test Design ◽  
Total Flavonoids ◽  
Orthogonal Test Design

Numerical Simulation of Natural Ventilation in Large-Scale Industrial Workshops Based on Orthogonal Test Design

2013 ◽  
Author(s):  
Yan Long ◽  
Jinming Feng ◽  
Ke Liu ◽  
Shiping Jin ◽  
Yan Fu
Keyword(s):  
Heat Source ◽  
Large Scale ◽  
Natural Ventilation ◽  
Orthogonal Test ◽  
Outdoor Environment ◽  
Industrial Plant ◽  
Test Design ◽  
Range Analysis ◽  
Orthogonal Test Design ◽  
Cfd Method

In this paper, orthogonal test design method and the CFD method were used to study the different building envelopes, and the outdoor environment of natural ventilation effect of single span of high temperature industrial workshop. Firstly, 18 ventilation models of workshop with heat source were constructed with orthogonal test design. Secondly, 18 ventilation models of workshop with heat source were simulated with CFD method. Finally, the order of the influencing factors on the ventilation of workshop was obtained through multiple index range analysis of the orthogonal experiment results according to the average temperature inside the workshop. Then the optimal combination of the best ventilation effect was selected. The research results can provide effectively theoretical basis for the future industrial plant ventilation design and optimization.

scholarly journals Optimization of hot-water ice-coring drills

2020 ◽  
pp. 1-8
Author(s):  
An Liu ◽  
Rusheng Wang ◽  
Yang Yang ◽  
Liang Wang ◽  
Xiao Li ◽  
...  
Keyword(s):  
Ice Core ◽  
Ice Cores ◽  
Orthogonal Test ◽  
Hot Water ◽  
Maximum Diameter ◽  
Test Design ◽  
Optimal Angle ◽  
Water Ice ◽  
Orthogonal Test Design ◽  
Nozzle Configuration

Abstract Hot-water ice-coring drills are often used to recover ice core samples from desirable depths in conjunction with full-scale hot-water drilling systems. However, the recovered cores exhibit varying qualities. The coring performance of a hot-water ice-coring drill depends significantly on the structure of the coring drill head (nozzle angle, diameter and number). To discover the most significant factor affecting ice-coring performance, nine types of drill heads were designed and tested in this study according to the orthogonal test design. Results indicated that the nozzle angle is the most significant factor that affects the coring quality and the optimal angle is ~15°. The number of nozzles is the second most important factor; a large number assists in obtaining ice cores of high quality. The optimal nozzle configuration to recover good quality cores are the following: the nozzle diameter, number of nozzles and nozzle angle are 1 mm, 60 nozzles and 15°, respectively, with the maximum diameter and 2 mm, 60 nozzles and 15°, respectively, with the maximum length.

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