Full Factorial DOE to determine and optimize the equation of impact forces produced by water jet used in sewer cleaning

Abstract

The functioning of the equipment to cleaning sewer is dependent on certain process parameters, causing variations of the impact forces. The aim of this paper is to define and optimise an equation that determines the impact forces, forces produced when the water jets is used to clean the sewer. The research method to measure the impact forces is the experiment using full factorial design of experiment. To can made the experiments was used a stand to generate the pressure waterjets and a device to measurement the values of impact forces. In the first part of paper was determine the equation of impact forces produced by water jet and then was realised a multiple linear regression model in three different ways to optimise the prediction of the proposed equation.