TT2305 TEXTILE QUALITY EVALUATION
UNIT I INTRODUCTION
Definition of quality – Product based, User based, Manufacturing based, Value based.
Types of quality – Quality of Design, Quality of Conformance, Quality of performance.
Quality control and Quality assurance. Factors influencing quality. Reasons for quality
evaluation. Terms used in sampling. Fibre sampling from bulk, Fibre sampling from
combed slivers, rovings and yarn. Yarn sampling, Fabric sampling.
UNIT II STATISTICAL EVALUATION
Measures of central tendency and dispersion, Determination of number of tests, Types
of error, Sources of error, Design of experiments – Factorial designs, Response surface
designs, Taguchi designs. Repeatability, Reproducibility.
UNIT III FIBRE QUALITY EVALUATION
Measurement of fibre fineness and its importance. Measurement of fibre length and its
uniformity. Principles of various fibre testing instruments – High Volume Instrument,
Advanced Fibre Information System. Principles of measurement of single fibre fineness,
strength and crimp characteristics of man-made fibres – Lenzing Technik’s Vibroscope,
Vibrodyn, Vibrojet, Vibrotex. Principle of fibre strength measurement by Stelometer,
Determination of moisture content and regain in fibres. Innovations in fibre quality
evaluation.
UNIT IV YARN QUALITY EVALUATION
Linear density, Twist, Evenness, Hairiness, Bulk, Friction and Abrasion. Tensile
Properties of Yarn, Tensile Testing of Yarn at High Speeds – Uster Tensojet, Lenzing
Speedy, Textechno’s Statimat, Influence of test speed, specimen length, humidity and
temperature on yarn tensile characteristics, Classification of yarn imperfections and
faults, Yarn appearance assessment – ASTM yarn grades, Electronic Inspection Board,
Latest developments in yarn testing instruments.
UNIT V FABRIC QUALITY EVALUATION
Tensile strength, Tear strength, Bursting strength, Dimensional stability, Serviceability,
Air permeability and Water repellency, Abrasion resistance & Pilling, Color fastness,
Comfort, Objective evaluation of fabric handle, Advances in fabric quality evaluation.
TEXT BOOKS
1. V. K. Kothari (Ed), Testing and Quality Management, Vol.1, IAFL Publications, New Delhi, India, 1999.
2. B. P. Saville, Physical Testing of Textiles, Woodhead Publishing Ltd., England, 1999.
REFERENCES
1. J.E. Booth, Textile Testing, Butterworth Heinemann Ltd., U.K, 1996.
2. Basu, Textile Testing; Fibre, Yarn and Fabric, SITRA, Coimbatore, 2001.
3. G.E.P.Box, W.G.Hunter and J.S.Hunter, Statistics for Experimenters, John Wiley &Sons, Inc., USA, 1978.
UNIT I INTRODUCTION
Definition of quality – Product based, User based, Manufacturing based, Value based.
Types of quality – Quality of Design, Quality of Conformance, Quality of performance.
Quality control and Quality assurance. Factors influencing quality. Reasons for quality
evaluation. Terms used in sampling. Fibre sampling from bulk, Fibre sampling from
combed slivers, rovings and yarn. Yarn sampling, Fabric sampling.
UNIT II STATISTICAL EVALUATION
Measures of central tendency and dispersion, Determination of number of tests, Types
of error, Sources of error, Design of experiments – Factorial designs, Response surface
designs, Taguchi designs. Repeatability, Reproducibility.
UNIT III FIBRE QUALITY EVALUATION
Measurement of fibre fineness and its importance. Measurement of fibre length and its
uniformity. Principles of various fibre testing instruments – High Volume Instrument,
Advanced Fibre Information System. Principles of measurement of single fibre fineness,
strength and crimp characteristics of man-made fibres – Lenzing Technik’s Vibroscope,
Vibrodyn, Vibrojet, Vibrotex. Principle of fibre strength measurement by Stelometer,
Determination of moisture content and regain in fibres. Innovations in fibre quality
evaluation.
UNIT IV YARN QUALITY EVALUATION
Linear density, Twist, Evenness, Hairiness, Bulk, Friction and Abrasion. Tensile
Properties of Yarn, Tensile Testing of Yarn at High Speeds – Uster Tensojet, Lenzing
Speedy, Textechno’s Statimat, Influence of test speed, specimen length, humidity and
temperature on yarn tensile characteristics, Classification of yarn imperfections and
faults, Yarn appearance assessment – ASTM yarn grades, Electronic Inspection Board,
Latest developments in yarn testing instruments.
UNIT V FABRIC QUALITY EVALUATION
Tensile strength, Tear strength, Bursting strength, Dimensional stability, Serviceability,
Air permeability and Water repellency, Abrasion resistance & Pilling, Color fastness,
Comfort, Objective evaluation of fabric handle, Advances in fabric quality evaluation.
TEXT BOOKS
1. V. K. Kothari (Ed), Testing and Quality Management, Vol.1, IAFL Publications, New Delhi, India, 1999.
2. B. P. Saville, Physical Testing of Textiles, Woodhead Publishing Ltd., England, 1999.
REFERENCES
1. J.E. Booth, Textile Testing, Butterworth Heinemann Ltd., U.K, 1996.
2. Basu, Textile Testing; Fibre, Yarn and Fabric, SITRA, Coimbatore, 2001.
3. G.E.P.Box, W.G.Hunter and J.S.Hunter, Statistics for Experimenters, John Wiley &Sons, Inc., USA, 1978.
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