Educational interactive virtual strain and consolidation tests using LabVIEW and Arduino Uno microcontroller

Abstract

AbstractThe main objectives of this research are to derive a modified retardation time parameter of the Kelvin model in terms of the coefficient of consolidation of the 1D‐consolidation equation and to design and implement an educational LabVIEW program linked with Arduino‐Uno microcontroller as data acquisition devices for practical verification of the results inside the classroom. Consolidation coefficients of the derived equation decrease with increasing retardation time parameters of the Kelvin model. The regression module of the educational program shows a negative power of fit with an MSE of (0.134), and a 1:1 scatter plot between the derived equation and the 1D‐consolidation equation, indicating a complete fit between both equations. The derived negative power fit equation of the educational program has led to a new expression of the stress ratio of the dashpot unit of the Kevin model. The altered Kelvin dashpot stress ratio is verified experimentally using a resistance‐capacitance (RC) circuit connected to the microcontroller and linked with the educational program. The RC circuit, Arduino‐Uno, and the LabVIEW educational program are “useful” tools in teaching the rheology of soil mechanics inside the classroom. The practicality of the RC circuit for simulating the rheology of soil mechanics inside the classroom enhances the student's understanding and improves their standards in the rheology of soil mechanics.