JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• 1. To provide the knowledge of testing of fabrics using different types of instruments
• 1. To understand the relations between the fabrics properties and structures for specific end uses
• 2. To educate the importance of fabric quality related to different processes during manufacturing and fabric processing.
• 3. To develop the new methods of testing fabrics in order to get accurate values and spontaneous results
• 4. To understand the properties of fabrics and construct various diagrammatic representations

COURSE OUTCOME (Graduate have)

• 1. An ability to test different types of fabrics properties, using different types of instruments
• 2. An ability to understand different fabric properties and relate them w.r.t comfort of apparels.
• 3. An ability to acquire good fundamentals in fabric testing and use fabrics according to their end applications
• 4. An ability to assess the physical properties of fabrics with different weaves
• 5. An ability to assess the thermal properties
• 6. An ability to assess the low stress mechanical properties

UNIT - I

Fabric Testing: Scope, Classification of Fabric properties., selection of properties criterion followed, Standard conditions for test methods and list of different test methods universally followed. Measurement of Fabric Geometrical Properties Fabric dimensions: Need for measurements of Fabric dimensions in general from the research point of view. Significance of measurement of length, width, Warp and Weft count, fabric weight and threads /inch in fabrics- Methods of measurement of length, Width, Count, Weight, Thread set., Use of Densimeters and the range of instruments available in Textile Industry. Fabric GSM measurement. Fabric Thickness: Need and Significance, measurement, Fabric compressibility at different loads, Calculation of EMC, Load Vs Recovery. Factors governing compressibility of fabrics. Crimp: Need, Significance from properties and production of point of view, measurement, Measurement of Crimp from Stress and Strain Curve (as suggested by Hearle) Factors affecting crimp, Crimp Vs Take up.

UNIT - II

Measurement of High Stress mechanical properties of fabrics Tensile Properties: Role of Tensile property of a fabric, Crimp interchange, Criterion for measuring Tensile strength, Selection of suitable Tensile method of fabric testing, Conventional and Modern Instruments, Factors affecting the Tensile strength results and their interpretation Tear Strength: Need and Significance, Criterion for Tear Strength, Different modes for measuring Tear Strength, Relation between fabric Washing and Tear strength, Impact of Textile Wet Processing on Tear strength, Factors affecting the Tear strength results and their interpretation Bursting Strength: Need and Significance, Criterion for Bursting strength, Conventional and modern instruments available, Factors affecting the Bursting strength results and their interpretation Ballistic strength: Need and Significance, Criterion for Ballistic strength, Factors affecting the Ballistic strength results and their interpretation

UNIT - III

Measurement of Fabric Aesthetic Properties Flexural Rigidity: Need and Significance, Conventional and Modern methods of measuring Fabric bending and Overall Flexural rigidity, recent development in measuring fabric bending, Factors affecting

Bending behavior and Measurement results and their interpretation. Fabric Drape: Need and Significance, Methods of measurement, Static Vs Dynamic Drape, Measurement of Static and Dynamic Drape, Review of Research carried out on Fabric Drape, Analysis of Drape contour, Relation between bending and Drape, Factors affecting Draping behavior and Measurement results and their interpretation. Fabric Shear : Concept of Shear and Shear force , Analysis of Fabric Shear behavior, Need and significance of Shear measurement, Methods of Shear measurement, Factors affecting Shaer behavior and Measurement, results and their interpretation. Crease Recovery: Measurement , Factors affecting , Typical Textile Wet processing to improve the Crease Recovery of Fabrics, Results and Interpretation Measurement of Serviceability: Abrasion resistance, Pilling of fabrics. Factors affecting these properties

UNIT - IV

Measurement of Fabric Comfort and Transmission properties Air permeability: Need and Significance, factors affecting, measurement of Air Resistance, Rate of Air flow Vs Fabric Cover, Conventional and Modern Instruments available for testing. Impact of Textile Wet Processing on Air permeability, Factors affecting the Air permeability results and their interpretation Moisture Management Properties: Need, scope, Instrument available and working of MMT. Factors affecting, Importance from Textile wet processing point of view Wicking Behavior of Fabrics: Study of water penetration, Wicking height Vs Geometrical & other factors, Drop penetration test, Shower Proofness test, Shrinkage tests. Unconventional methods of estimating the moisture and wicking behavior of fabrics, Review of research Thermal Properties: Need and Significance, measurement of Thermal Conductivity and T I V , Conventional and Modern testing methods (Thermolobo and KES-F, Factors affecting thermal properties Fabric Shrinkage measurement: Need, commercial processes, Economic interpretation, Laboratory methods, factors governing and Interpretation of results

UNIT - V

Impact of Wet Processing on all fabric properties- Impact of each wet processing process on all fabric properties and use of each process parameters to set the property as per requirement. Fastness Properties: Need and Measurement of Wash, Light (Sun and Ultra Violet), Perspiration and Rubbing fastness, Governing factors. Evaluation as per the Grey scales, Interpretation of results. Flammability: Introduction, terms related, Need and Significance, LOI, measurement methods (Vertical Vs Horizontal). Flammability finishes applied and their impact on fabric performance, Fabric Low Stress Mechanical Properties: Introduction, Objective Vs Subjective measurements, KES-F & FAST testers, Analysis of mechanical properties and their interrelations. Fabric Response to pull out force, factors governing, Analysis of KESF-Data (16 mechanical properties) -Latest tools for Interpretation of Test results (brief Note), Use of Bi-Plot, Snake chart, Control chart and Polar chart,

TEXT BOOKS:

• 1. Principle of Textile Testing – J.E.Booth, Butterworths London 2003
• 2. Textile Testing – Arindam Basu, SITRA, 2010.
• 3. Physical Testing Vol. I & II - Keshavan and Angappan, SSMITT Publications, Komarapalyam, 1993.

REFERENCE BOOKS:

• 1. I S I Hand book of Textile testing –Indian standard Institution, N. Delhi 1981.
• 2. Hand book of testing methods – CIRCOT
• 3. Fabric assessment by mechanical sensing methods – Textile Progress, Edited by Bishop, Vol – 28, 1996
• 4. Hand book of Textile Testing – Grower and Hamby, Universal Book Corporation, Mumbai, 2010