Factorial approach for multiple optimization of mechanical properties of alternative composite material for manufacture/repair flight surfaces (Año 2021).

ParedesJuan^abSilvaVinicio^aVacaHenry^aEnríquezVíctor^cArrobaCesar^a

^aTechnical University of Ambato, Faculty of Civil and Mechanical Engineering, Research and Innovation Group in Mechanical Engineering (GI3M), Av. Los Chasquis and Río Payamino, Ambato 180103, Ecuador

^bNational Distance Education University (UNED), PhD Candidates in Science, Madrid 28040, Spain

^cCenter Research and Development of Ecuadorian Air Force, Ambato 180156, Ecuador

Abstract

Currently there is a trend in the use of alternative composite materials to be implemented in the manufacture and repair of aircraft flight surfaces of the CIDFAE (Center Research and Development of Ecuadorian Air Force); In order to obtain a material with similar or superior properties to conventional ones, studies are generated where new materials are investigated. This research proposes a method of optimization of the mechanical properties to traction, bending and impact, with a factorial approach, based on the analysis of the desirability function, this statistical methodology allows to determine the optimal combination of manufacturing parameters, in which we can measure the overall quality of the statistical model used and control the statistical significance. With the present investigation it is defined that the optimal combination that takes advantage of the mechanical properties analyzed is the one that is composed of: 6 layers of carbon fibers at 0°, 1 layer of carbon fiber at 135° and 1 layer of copper fiber at 0°. The general factorial regression model used in this research, to globally describe the analyzed properties of the alternative compound, explains the variability of the data obtained with the tests by 95.01%. This model efficiently reduces the uncontrolled variability.