Use of wavelet analysis for an objective evaluation of the formation of pills in nonwoven fabrics. (November 2019)

• Record Type: Journal Article
• Authors: Wang, Dandan; Barber, JR; Lu, W; Thouless, MD
• Is Part Of: Journal of industrial textiles. Volume 49:Number 5(2019)
• Page Start: 663
• Page End: 675
• Publication Date: 2019-11
• Subjects: Nonwoven fabric -- objective evaluation -- pill -- wavelet analysis; Textile fabrics -- Periodicals; Textile industry -- Periodicals; 677.005
• DOI: 10.1177/1528083718813524
• Languages: English
• ISSNs: 1528-0837

Abstract

A quantitative technique to measure pill formation on fabrics has been developed using a wavelet analysis. This technique permits the damage of fabrics to be evaluated with a minimum of human interpretation. A two-dimensional, discrete-wavelet transform was applied to images of nonwoven fabrics, and an optimal approach was found by which the background information could be eliminated from the digital data to obtain characteristic information about the pills. This information, corresponding to the degree of damage, is expressed in terms of a gray-value ratio that is extracted from the details of the wavelet characterization. It has been shown that the resultant parameter correlates well with an independent, qualitative assessment of damage.