Open AccessANCOVA analysis of penetration force on Kevlar fabrics used for ballistic protective equipment
Author(s) -
Ionuț Dulgheriu,
Savin Dorin Ionesi,
Manuela Avădanei,
Liliana Hristian,
Emil Loghin,
Liliana Buhu,
Irina Ionescu
Publication year - 2022
Publication title -
industria textilă
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.281
H-Index - 14
ISSN - 1222-5347
DOI - 10.35530/it.073.01.202197
Subject(s) - analysis of covariance , variables , penetration (warfare) , covariate , variable (mathematics) , mathematics , deformation (meteorology) , statistics , mechanics , materials science , composite material , physics , mathematical analysis , operations research
The paper aims to highlight the existence of significant differences between the variation of the penetration force of threegroups of fabrics used for ballistic protective equipment in the function of the deformation arrow, using the ANCOVAmathematical model with a nominal independent variable and a quantitative independent variable. The model included:the dependent variable (Y) – the variation of the penetration force T (N); nominal independent variable – fabric group;quantitative independent variable – deformation arrow, Δl (mm). This paper analyses the effect of the nominalindependent variable and the quantitative independent variable on the penetration force variation, using the ANCOVAmodel. From the results obtained, through Tests of Be-tween-Subjects Effects, it is observed that the effect of thenominal independent variable “fabric group” is significant and also the effect of the covariate “deformation arrow” issignificant. Interpreting the value of Sig < 0.05, it can be concluded that there are significant differences between thevariation of the penetration force deformation (alternative hypothesis H1 is accepted). This technique can be used laterto model the physical and mechanical properties of fabrics and to select the most appropriate fabrics to meet therequirements of a particular field of use