Characterizing structural changes in point-bonded nonwoven fabrics during load-deformation experiments

Citation
Hs. Kim et al., Characterizing structural changes in point-bonded nonwoven fabrics during load-deformation experiments, TEXT RES J, 71(2), 2001, pp. 157-164
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
TEXTILE RESEARCH JOURNAL
ISSN journal
0040-5175 → ACNP
Volume
71
Issue
2
Year of publication
2001
Pages
157 - 164
Database
ISI
SICI code
0040-5175(200102)71:2<157:CSCIPN>2.0.ZU;2-1
Abstract
Current efforts to establish links between processing conditions and the st ructure and properties of nonwoven fabrics in general, and for point-bonded (spot-bonded) nonwovens in particular, would be served significantly by in situ experimental visualization and measurement of the structural changes that occur during controlled deformation experiments. The features of a sim ultaneous "tensile testing/image acquisition" instrument that can serve thi s critical need are described in this report. The instrument is effective i n providing quantitative measures of the orientation distribution function (ODF) Of the fibers, the bond spot strain, the unit bond repeat pattern str ain, and the shear deformation of this unit cell as a function of applied m acroscopic deformation. It is also useful in determining the failure mode a s a function of the method of applying deformation to the nonwoven fabric. These features are exemplified through analysis of a point-bonded carded no nwoven, which is anisotropic in its fiber orientation distribution and in t he geometry and distribution of its patterned thermal bond spots.