Effects of Wet Activation Process Parameters on Surface Hydrophilicity in Silicon Direct Wafer Bonding

Wet activation is a very important step in silicon direct wafer bonding process and a optimized activation process is desirable to improve the surface hydrophilicity. Therefore the pivotal parameters of activation process were investigated which were volume ratio, holding time and treat temperature. A orthogonal experiment array was designed to reveal the effects of these parameters and the experiment results were analyzed by range analysis method. The analysis results indicted among those three parameters, everyone had intimidate relationship with surface hydrophilicity, which was indexed by contact angle. And higher concentration, longer holding time and higher treating temperature in possible value range were more desirable. Based on these conclusions, optimized activation process was desigened using which void-free bonding was realized.

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Study on Calibration Test of Height Adjusting System for Automobile Headlight Based on Uniform Design Experiment

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.325-326.738 ◽

2013 ◽

Vol 325-326 ◽

pp. 738-741

Author(s):

Shi Dian Ma ◽

Hao Bin Jiang ◽

Mu Han

Keyword(s):

Orthogonal Experiment ◽

Uniform Design ◽

Direct Analysis ◽

Test Method ◽

Design Experiment ◽

Analysis Method ◽

Range Analysis ◽

Calibration Test ◽

Tuning Method ◽

Test Study

This paper describes the new Calibration test method of Height Adjusting System for Automobile High Lighting. Come up with the problem of working efficiency for Calibration test, study the parameters tuning method of Height Adjusting System for High Lighting based on uniform design experiment. Analyze experimental data by using direct analysis method and range analysis method, find the factor which affects the high lightings height most. Verify the result of orthogonal experiment on the test platform. The test shows that the new Calibration test method is reliable and efficient.

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Analysis on Slope Stability Based on Factor Sensitivity

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.475-476.1528 ◽

2013 ◽

Vol 475-476 ◽

pp. 1528-1533

Author(s):

Liang Cao ◽

Shan Guang Qian ◽

Hui Min Wang ◽

Jian Feng Huang

Keyword(s):

Stability Analysis ◽

Slope Stability ◽

Orthogonal Experiment ◽

Limit Equilibrium ◽

Limit Equilibrium Method ◽

Mechanical Parameters ◽

Analysis Method ◽

Key Factors ◽

Range Analysis ◽

Factors Affecting

A slope model was established in this paper, the accuracy of simplified Bishop Method based on rigid body limit equilibrium method was verified. The orthogonal experiment for structure was made aimed at the main mechanical parameters of rock material, and then simplified Bishop Method was used to analyze the slope stability. Using range analysis method and variance analysis method to analyze various factors affecting slope stability, then the key factors for slope stability were obtained. The focus of geotechnical engineering considerations was pointed out, and provided reference for more accurate slope stability analysis.

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Fabrication of highly stable and durable furfurylated wood materials. Part I: process optimization

Holzforschung ◽

10.1515/hf-2019-0286 ◽

2020 ◽

Vol 74 (12) ◽

pp. 1135-1146

Author(s):

Wanju Li ◽

Minghui Liu ◽

Hankun Wang ◽

Yan Yu

Keyword(s):

Orthogonal Experiment ◽

Weight Percent Gain ◽

Weight Percent ◽

Chinese Fir ◽

Curing Temperature ◽

Modulus Of Rupture ◽

Scale Production ◽

Range Analysis ◽

Decay Fungi ◽

Mold Resistance

AbstractIn order to improve dimensional stability and durability of wood, furfurylation of poplar and Chinese fir wood using newly developed furfuryl alcohol (FA) formulation combined with a common vacuum and pressure impregnation process was studied. An orthogonal experiment was designed to optimize the furfurylation process for the two wood species. The weight percent gain (WPG), equilibrium moisture content (EMC), anti-swelling efficiency (ASE), modulus of rupture (MOR), modulus of elasticity (MOE), as well as resistance to mold, decay fungi, and termites were evaluated. The results showed that nearly all the properties of the furfurylated wood could be improved to various extents. The average ASE of the furfurylated Chinese fir and poplar could reach as high as 80, 71, 92% and 79, 90, 75% in tangential and radial directions, and by volume, respectively, higher than most previously reported wood modification processes. Furthermore, the modified wood had excellent biological durability, with nearly 100% mold resistance, strong decay and termite resistance. Finally, processing parameters with 50% FA, 105–115 °C curing temperature, and 5–8 h curing time were therefore recommended for pilot-scale production of furfurylated poplar and Chinese fir wood based on range analysis.

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Laboratory Investigation of Compaction Characteristics of Plant Recycled Hot-Mix Asphalt Mixture

Sustainability ◽

10.3390/su13063005 ◽

2021 ◽

Vol 13 (6) ◽

pp. 3005

Author(s):

Jiangang Yang ◽

Chen Sun ◽

Wenjie Tao ◽

Jie Gao ◽

Bocheng Huang ◽

...

Keyword(s):

Regression Model ◽

Hot Mix Asphalt ◽

Orthogonal Experiment ◽

Asphalt Mixture ◽

Material Design ◽

Void Content ◽

Range Analysis ◽

Aggregate Gradation ◽

Compaction Characteristics ◽

Compaction Energy

In this study, the compaction characteristics of recycled hot-mix asphalt (RHMA) were evaluated using the void content (VV), compaction energy index (CEI), slope of accumulated compaction energy (K), and lock point (LP). Then, the effects of the compaction parameters, including the gradation of the RHMA, reclaimed asphalt pavement (RAP) content, temperature of gyrations, and number of gyrations, on the compaction characteristics of RHMA were investigated. An orthogonal experiment was designed and the data collected were analyzed via range analysis; then, a regression model was generated relying on a quadratic polynomial. Furthermore, the regression model was used for the comparison and prediction of the mixture’s compactability during the material design. Finally, the compaction mechanism of RHMA was discussed from the perspective of the void content of RAP particles. The results showed that a finer aggregate gradation, a higher gyration temperature, a greater number of gyrations, and a higher RAP content were effective for increasing the compactability of RHMA. The range analysis results suggest that the gradation of RHMA has the greatest influence on compactability, followed by the RAP content. The RAP aggregate cannot diffuse to a new mixture completely, so the remained RAP particle reduces the void content of RHMA. Therefore, a higher RAP content up to 50% can help RHMA to achieve the designed void content with higher efficiency.

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