Abstract
The variation in the composition of a finished fabric is a summation of several identifiable independent factors. These may be combined by specially derived statistical methods to provide an estimate of likely within-batch and batch-to-batch variations. A detailed analysis of four typical fabrics indicates that, with the levels of variation attainable in good current manufacturing practice, single-sample testing with a statutory composition tolerance of ±3% must lead to a high failure rate, especially with fabrics composed of blended staple-fibre yarns. A small ‘design error’—the difference between the grand mean of a production and the labelled fibre content—produces a notable increase in failure rate.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
