Predicting the Tensile Strength of Needle-punched Nonwoven Mats Using X-ray Computed Tomography and a Statistical Model

Title
Predicting the Tensile Strength of Needle-punched Nonwoven Mats Using X-ray Computed Tomography and a Statistical Model
Author(s)
이준석전승열[전승열]유웅렬[유웅렬]김민선[김민선]김종원
Keywords
GENERAL FIBER ASSEMBLIES
Issue Date
201406
Publisher
KOREAN FIBER SOC
Citation
FIBERS AND POLYMERS, v.15, no.6, pp.1202 - 1210
Abstract
As nonwoven mats are randomly oriented fiber assemblies, the tensile strength of nonwoven mats is determined by their microstructural factors, such as fiber orientation, fiber volume fraction, and fiber-fiber contact level. The complex microstructure of nonwoven mats must be reasonably simplified to properly predict their mechanical properties within affordable efforts. In this study, a new parameter, so called contact efficiency, is defined to describe the fiber-fiber contact level of nonwoven mats. Micro X-ray computer tomography (CT) is employed to characterize the microstructure of needle-punched nonwoven mats made of polypropylene short fibers. The fiber orientation and volume fraction are obtained by analyzing 2D sectional CT image of the nonwoven mat, while the contact efficiency is determined from 3D CT image. A statistical model, developed originally for staple yarns, is modified to predict the tensile strength of the nonwoven mat using the microstructural factors obtained from CT analysis. The prediction is then compared with experiments to validate that the current model incorporating the contact efficiency is highly suitable for predicting the tensile strength of nonwoven mats.
URI
http://hdl.handle.net/YU.REPOSITORY/31939http://dx.doi.org/10.1007/s12221-014-1202-z
ISSN
1229-9197
Appears in Collections:
공과대학 > 융합섬유공학과 > Articles
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