Prediction for air permeability and GSM of a knitted fabric response surface methodology/ Namirembe, Susan.

TABLE OF CONTENTS
ABSTRACT................................................................................................................................i
ACKNOWLEDGEMENT....................................................................................................... iii
DEDICATION..........................................................................................................................iv
DECLARATION .......................................................................................................................v
APPROVAL .............................................................................................................................vi
LIST OF ACRONYMS ...........................................................................................................vii
LIST OF FIGURES .................................................................................................................vii
LIST OF TABLES...................................................................................................................vii
CHAPTER ONE: INTRODUCTION........................................................................................1
1.1 BACKGROUND.........................................................................................................1
1.2 PROBLEM STATEMENT .........................................................................................4
1.3 OBJECTIVES. ............................................................................................................5
1.3.1 Main objective. ....................................................................................................5
1.3.2 Specific Objectives. .............................................................................................5
1.4 SIGNIFICANCE OF THE STUDY............................................................................5
1.5 SCOPE AND LIMITATIONS OF THE STUDY.......................................................5
1.5.1 Conceptual scope .................................................................................................5
1.5.2 Geographical scope..............................................................................................5
1.5.3 Time scope ...........................................................................................................5
1.6 JUSTIFICATION........................................................................................................6
2 CHAPTER TWO: LITERATURE REVIEW.....................................................................6
2.1 INTRODUCTION.......................................................................................................6
2.2 AIR PERMEABILITY OF KNITTED FABRICS......................................................6
2.3 FABRIC GSM.............................................................................................................7
2.4 FACTORS AFFECTING KNITTED FABRIC GSM AND AIR PERMEABILITY.7
ix
2.4.1 Porosity ................................................................................................................7
2.4.2 Fabric tightness factor..........................................................................................8
2.4.3 Fabric thickness ...................................................................................................9
2.4.4 Yarn count............................................................................................................9
2.4.5 Stitch length .........................................................................................................9
2.5 TECHNIQUES USED FOR PREDICTION.............................................................10
2.5.1 Response surface methodology..........................................................................10
2.5.2 Areas of application of RSM .............................................................................11
2.5.3 Determination of Optimum Conditions.............................................................11
2.6 RESPONSE SURFACE METHODOLOGY............................................................12
3 CHAPTER THREE: METHODOLOGY.........................................................................13
3.1 MATERIALS AND EQUIPMENT ..........................................................................13
3.1.1 Fabric .................................................................................................................13
3.1.2 Equipment..........................................................................................................14
3.2 DETERMINATION AIR PERMEABILITY AND GSM AT VARYING
KNIITTING PARAMETERS..............................................................................................16
3.2.1 Determination of factors which affect air permeability and GSM ....................16
3.3 DEVELOPMENT OF RSM MODEL.......................................................................19
3.3.1 Experimental variables.......................................................................................19
3.3.2 RSM model generation and optimization ..........................................................19
3.4 VALIDATION OF THE MODEL............................................................................20
4 Proposed budget ...............................................................................................................21
5 Proposed work plan ..........................................................................................................21
REFERENCES .......................................................................
APPENDICES .........................................................................................................................