Interaction diagram and response surface plot of pretensioned inverted T-beam with circular web openings

2009 ◽  
Vol 7 (2) ◽  
pp. 209 ◽  
Author(s):  
Hock Tian Cheng ◽  
Bashar S. Mohammed ◽  
Kamal Nasharuddin Mustapha
Keyword(s):  
Response Surface ◽  
Web Openings ◽  
Interaction Diagram ◽  
Response Surface Plot ◽  
Surface Plot ◽  
T Beam

scholarly journals Optimization of parameters affecting dealcoholization of anthocyanin extract by liquid emulsion membrane using response surface methodology

2021 ◽  
Vol 19 (6) ◽  
pp. 562-574
Author(s):  
Prakash Binnal ◽  
Rajashekhara S. ◽  
Jagadish Patil
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Suitable Model ◽  
Central Composite Rotatable Design ◽  
Design Expert ◽  
Optimum Parameters ◽  
Response Surface Plot ◽  
Surface Plot ◽  
Liquid Emulsion ◽  
Central Composite

Colour is one of most important properties of foods and beverages and is a basis for their identification and acceptability. Anthocyanin from red cabbage was extracted using 50 % ethanol. The extract was dealcoholized by Liquid Emlusion Membrane technology (LEM). Parafin oil was used as a solvent, lecithin was used as a surfactant and water as stripping medium. Response surface methodology (RSM) was used to design the experiments. A total of 30 experiments were conducted in accordance with central composite rotatable design. Design expert 8 was used to design the experiments. % extraction of alcohol in each case was determined. A suitable model was fitted to experimental data by regression analysis (R-square=0.93). Response surface plot were analysed and optimum parameters for dealcoholization were found to be speed=365.44 rpm, time=18.62 min, concentration of lecithin=2.84 %, feed to emulsion ratio=3.05. A maximum dealcoholisation of 18.63 % was observed under these conditions

Analysis of faults in rotor-bearing system using three-level full factorial design and response surface methodology

2021 ◽  
pp. 095745652110307
Author(s):  
Hara P Mishra ◽  
Arun Jalan
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Fault Analysis ◽  
Vibration Response ◽  
Effect Analysis ◽  
Outer Race ◽  
Surface Plot ◽  
Rotor Bearing ◽  
Full Factorial ◽  
Bearing System

This article presents the experimental and statistical methodology for localized fault analysis in the rotor-bearing system. These defects on outer race, on inner race, and on a combination of ball and outer race are considered. In this study speed, load and defects were considered as the essential process variables to understand their significance and effects on vibration response for the rotor-bearing system. Three factors at three levels were considered for experimentation, and the experiment was designed for L27 based on design of experiments (DOE) methodology. From the experiments, the vibration response results are recorded in terms of root mean square value for the analysis. Response surface methodology (RSM) is used for identifying the interaction effect of varying process parameters upon the response of vibrations by response surface plot. The rotor-bearing test setup is used for experimentation and is analyzed by using DOE. This study establishes the prediction of fault in the rotor-bearing system in combined parametric effect analysis and its influence with DOE and RSM.

scholarly journals Shear Stress Distribution in the Opening Chords of Hybrid R/C T-Beams with Opening

2018 ◽  
Vol 147 ◽  
pp. 01005
Author(s):  
Jonie Tanijaya
Keyword(s):  
Shear Stress ◽  
Stress Distribution ◽  
Shear Force ◽  
Maximum Shear Stress ◽  
Shear Stress Distribution ◽  
Shear Stresses ◽  
Web Openings ◽  
The Right ◽  
Lower Corner ◽  
T Beam

This study is carried out to evaluate the potential of three hybrid T-beams with web openings theoretical shear stresses distribution. The shear stresses at the opening edges were plotted at the working stage, yielding stage and collapse stage for these three tested beams. The available experimental results from the previous research was compared to the finite element results as well as the developed analytical. The shear stress distribution at the middle of the top and bottom chords of the opening in pure bending region are zero. At the upper and lower corners of the opening occurs the maximum shear stresses. The maximum shear stress occurs at the right lower corner chord at the high moment edge and at the left upper corner chord at the low moment edge in beams with openings at high shear and high flexural – shear region. Furthermore, an extensive parametric study is performed on these beams to find the distributing ratio of the shear force between the opening chords. The shear force at an opening in hybrid R/C T-beam is carried by the top and bottom chords of the opening according to the area – moment of inertia root ratio with the correction factor 0.70.

Optimization of the Combination of Three Natural Preservatives in Beef Storage with Controlled Freezing Point Technique

2013 ◽  
Vol 781-784 ◽  
pp. 1700-1707
Author(s):  
Tian Li Sun ◽  
Ping Zhang ◽  
Zhao Hui Ren ◽  
Peng Zhang ◽  
Xi Qing Yue
Keyword(s):  
Response Surface ◽  
Freezing Point ◽  
Optimum Combination ◽  
Tea Polyphenols ◽  
Contour Plot ◽  
Box Behnken Design ◽  
Surface Plot ◽  
Point Condition ◽  
Controlled Freezing ◽  
Natural Preservatives

Response surface methodology (RSM), based on Box-Behnken design principle, was employed to obtain the optimum combination of three natural preservatives in beef storage with controlled freezing point technique. Chitosan, Nisin and tea polyphenols were chosen as the optimization factors while investigated responses was total volatile basic nitrogen (TVB-N). The response surface plot and the contour plot derived from the mathematical models were applied to determine the optimal conditions. The Optimum combination of three preservatives was chitosan 1.70%, Nisin 0.03% and tea polyphenols 0.24%. The increasing rate of TVB-N was 49.34% on the 20thday when beef was stored in controlled freezing point condition with the optimum combination of three preservatives, which was in good agreement with the value predicted by the model.

scholarly journals Response surface modelling and performance evaluation of solar dryer for drying of grapes

2021 ◽  
Vol 5 (2) ◽  
pp. 157-168
Author(s):  
Aditya Arvind Yadav ◽  
Pravin A. Prabhu ◽  
Jaydeep S. Bagi
Keyword(s):  
Response Surface ◽  
Sugar Content ◽  
Size Variation ◽  
Surface Modelling ◽  
Solar Dryer ◽  
Surface Plot ◽  
Solar Greenhouse ◽  
Response Surface Modelling ◽  
And Performance ◽  
Drying Conditions

The current study focuses on the performance of Solar Greenhouse Dryer for drying of grapes for raisin making in Solar Dryer and Open sun condition in Western Maharashtra.  The Maharashtra state ranks first in the production of grapes, probably Western Maharashtra produces nearly 800 thousand tons of grapes every year. The major wastage of grapes is due to low sugar content, glossy appearance, shrinkage, excess water in berry, scorching and size variation. Therefore, there is a need to preserve the grapes by drying and making raisins for a non-seasonal requirement. The experiment was conducted for drying of grapes in Solar Greenhouse Dryer and Open Sun condition from 1st of April to 4th of April for 48 hours. The initial weight of the grapes to be dried was 500 grams for both Solar Greenhouse Dryer and open sun drying conditions. The experiment was conducted at Bahe, Borgaon, Tal-Walwa, Dist- Sangli, Maharashtra, India located at 17.115o N and 74.33o E.  The main aim of using DOE i.e., Response Surface Modelling is to get an optimum region for drying of grapes in Solar Greenhouse Dryer, from the Surface plot; the region of maxima and minima was obtained.

Experimental and analytical analysis of pretensioned inverted T-beam with circular web openings

2009 ◽  
Vol 5 (2) ◽  
pp. 203-215 ◽  
Author(s):  
Hock Tian Cheng ◽  
Bashar S. Mohammed ◽  
Kamal Nasharuddin Mustapha
Keyword(s):  
Web Openings ◽  
Analytical Analysis ◽  
T Beam
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