Response surface analysis of biaxial mechanical properties and elastic parameters for woven fabric composites

Abstract

This paper describes a self-developed MATLAB program for achieving complex deformation properties and accurate elastic parameters of woven fabrics. Using this program, the response surface analyses of deformation and elastic parameters were conducted to reveal the variation and evolution in stiffness, Poisson’s ratio, and orthotropy of the laminated woven fabric composite under different loading/unloading stages, cycles, stress levels and ratios, which is a further development of our prior work. Results show that elastic parameters and orthotropic characteristics of the material vary noticeably with the loading/unloading stages, cycles, stress levels, and ratios. As higher values are required to model the remarkable warp–weft interaction and large negative strains, Poisson’s ratios in boundary regions with a maximum of 1.0 (loading) or 1.5 (unloading) are outside the bounds normally expected for these parameters. In addition, the proposed method is feasible to evaluate elastic parameters for any stress state, and thereby provides new insights into underlying deformation mechanisms of woven fabric composites.

Influence of Water-Induced Degradation of Polytetrafluoroethylene (PTFE)-Coated Woven Fabrics Mechanical Properties

“…Xu et al [ 74 ] investigated off-axis mechanical behaviors of PVC-coated fabrics by digital image correlation technology to measure the shape, displacement, and strain. Chen et al [ 75 ] developed a MATLAB program for achieving complex deformation properties and accurate elastic parameters of woven fabrics under biaxial tests. Khaothong [ 76 ] used the Taguchi method for investigated factors affecting the strength of welding seam through hot air for PVC-acrylic coated polyester fabrics.…”

Modeling the temperatures of traveler and ring in ring spinning

“…4,19,20 In this study, the heat transfer model of the traveler and the ring was developed to reveal its temperature field through the external heat source method. 17 The ring temperature under four variables (traveler weight, yarn count, twist level and spindle speed) was obtained experimentally and simulated based on the experimental plan generated by the response surface methodology 21,22 to verify the correctness of the heat transfer model. Subsequently, the statistical model for the significant factor and the temperature of the traveler and the ring have been revealed.…”