To understand concept of testing as related to yarn and fabric.
To enable students to understand various testing methods.
9.00
Unit I:
Introduction: Aim and scope of testing
Objectives of textile testing.
Selection of samples for testing – Random sampling procedures for determination of properties of fibers, yarn and fabrics.
Standards atmospheric test condition, various methods to measure relative humidity, moisture content and moisture regain of textiles.
Factors affecting regain of textile materials and their effects on fiber properties.
10.00
Unit II:
Fibre testing – length fineness and evenness, crimp, strength, elongation its implication on quality
Yarn testing – Yarn numbering and conversion system, fineness, twist, crimp, elongation, elastic recovery and strength.
Evenness testing of yarns, nature and causes of irregularities, principles and methods of evenness testing, evaluations and interpretation of evenness results
Yarn hairiness, principle of measurement, measuring instruments. Test for filament and textured yarn.
Fabric inspection procedure its defects and their analysis.
Fabric’s mechanical properties such as smoothness, stiffness, softness and shear, drape behavior.
8.00
Unit IV:
Test related to fabric appearance such as pilling, crease and wrinkle recovery, fabric handle and factors influencing, fabric comfort.
Serviceability testing parameters such as abrasion resistance, fabric strength, tear strength, bursting strength and snagging test, assessment of barre and other form of fabric defects.
10.00
Unit V:
Colour Fastness Tests: Introduction and importance of colour fastness tests. Methods of evaluation of colour fastness by grey scales.
Methods of determination of colour fastness to washing, bleaching, perspiration, rubbing, sea water, hot pressing, light
Essential Readings:
Booth, J.E., Principles of Textile Testing, Newness Butter Worth, London,1996.
John, H. Skinkle., Textile Testing, Brooklyn, New York.
Hearle J. W. S. & Morton W. E., Physical properties of textile fibres (Fourth edition) Woodhead Publishing Limited,UK,2008
Hu J., Fabric testing, Woodhead Publishing Limited,UK,2008.
Saville B. P., Physical testing of textiles,Woodhead Publishing Limited,UK,1999
Billie, J. Collier and Helen, H. Epps., Textile Testing and Analysis, Prentice Hall, New Jersey,1998.
