behavior analysis of the nonwoven needle-punched polyester fabrics due to compression loading

This study investigates bursting strength, puncture resistance and the relevant real elongations of the nonwoven needle-punched polyester fabrics using compressive behavior study and statistical design of experiment known as three-factor factorial design. to evaluate effect of main parameters of fabric structure, seventy-five samples were prepared and a prediction model was developed by multiple linear regression method. the results unanimously showed that samples have undeniable similarities in the compression behavior, so that four distinguished regions can be considered through the path tracing of the force-deflection curves. additionally, it was concluded that the puncture’s self-socking position takes place in less magnitude of elongation in comparison to the similar position of bursting. stress concentration in puncture causes that the fabric rupture was due to fiber breakage rather than its slippage. whereas, the bursting ruptures of the fabric are further the result of fiber slippage. this is clearly due to geometry of ball-shaped device which is led to the relative uniformity of the quality of bursting loading.