Math-2503: Statistics

3 Hours/Week                         Credit: 3.00

 

Mathematical Methods: Laplace transforms; Fourier series and Fourier transform.

 

Statistics       

Historical development of the subject; Collection of data – Primary data and secondary data; Presentation of data – Tabular and diagrammatic.

 

Frequency Distribution: Grouped frequency distribution and their presentation in the form of frequency polygon and histogram.

 

Measures of Central Tendency: Mean; Arithmetic Mean, Geometric Mean, Harmonic Mean; Median; Mode; Definition; Computation; Advantage; Disadvantage and uses.

 

Measures of Dispersion: Absolute measure; Range; Mean deviation; Quartile deviation; Standard deviation; Relative measure; Co-efficient of variation; Definition; Computation and uses.

 

Moment, Skewness and Kurtosis:  Definition, Computation and uses.

 

Probability:  Simple idea of probability; Different definitions related to probability; Addition law of probability for mutually exclusive and not mutually exclusive events; Multiplication law of probabilities for dependent and independent events; Calculation of successive probabilities using addition law and multiplication law of probability; Probability distribution: Binomial, Poission; Simple idea about normal distribution and its probability curve.

 

Estimation:  Simple idea about estimation.

 

Correlation and Regression: Correlation – Ideas of correlation; Measurement of correlation; Pearsonian correlation co-efficient and spearman’s Rank correlation co-efficient; Multiple correlation; Regression–Ideas about simple regression; Equation of the regression line; Estimation of the parameters of the regression line.

 

Test of Significance:  Some definitions related to test of significance; T- test–(a) Comparison of a sample mean with a know population mean when S.D. is known and when S.D. is not know, (b) Comparison of two sample means when S.D. is known and also when it is unknown, (c) Paired t – test, its practical use in Textile Industry. X2 test – Simple application and its practical use in Industry.

 

Time Series:  Definition; Characteristics and components.

 

Sampling:  Definition of population; Sample; Parameter; Census etc.; Simple random sampling; Stratified random sampling; Their definition; Computation; Use; Advantage and disadvantage.

 

Design of Experiment:  Basic principles of experimental design; Ideas about CRD, RBD and LSD.

ME-2704: Basic Mechanical Engineering (Sessional)       

3/2 Hours/Week                                  Credit: 0.75

 

Sessional based on ME-2703

ME-2703: Basic Mechanical Engineering              

3 Hours/Week                         Credit: 3.00

 

Thermodynamics and Heat Transfer: Fundamental concepts and definitions; Revision of gas laws; Properties of perfect gas and steam; Laws of thermodynamics; Thermodynamic process and cycles; Thermodynamics of steam generation, Boilers.

 

Basic refrigeration cycle & Air conditioning: Application of refrigeration & air conditioning; Vapor compression refrigeration & absorption refrigeration; Classification of air conditioning system; Cooling load calculation.

 

Internal combustion engines: Diesel and Petrol engine.

 

Hydraulics : Properties of fluids; Pressure head of a liquid; Pressure gauges; Flow of fluids; Bernoule’s equation; General energy equation for steady flow; Head loss due to friction in a pipe.

 

Turbo machineries: Fan; Compressor; Pump.

 

Transmission of motion and power: Belt, Ropes, Chains, Gears and gear trains.

 

Conversion of motion: Shedding; Tappets and cams.

 

Types & application: Keys and couplings; Journal; Ball and roller bearings.


TE-2600: Application of Computer in Textile – I (Sessional)      

3 Hours/Week                         Credit: 1.50

 

General programming principles used in developing business and Textile applications of computers (Payroll, stock control, whole sale, retailing etc.); Series of structure on C-language: System analysis, system design; Documentation and planning; Critical path analysis, linear programming; Understanding the process simulation & its usefulness in textile process; Simulation techniques; Application of Mini Tab, SPSS, MATLAB; Concept of fuzzy tool box; Image processing toolbox etc.; Automation in weaving & knitting; Preparation of weaving CAD using suitable software; Use of bale management software, Principles of Uster Tester software; Use of available textile related software.


TE-2603: Fibrous Materials and Textile Physics – II       

4 Hours/Week             Credit: 4.00

 

Fibrous Materials

 

History of Man-made fibers, Classification of Man-made fibers (Concept of Chemical, Regenerated and Chemical Fibers) and their generic coding system, General principles of production processes (Polymerization, Poly-condensation and Poly-addition; Spinning-Dry spinning, Wet spinning; Spinnerets; Drawing; Texurization; Twisting), Most important Fiber Raw Material’s structures and their properties, Types of different orientation system (LOY, POY, HOY, MOY) and their typical spinning speed; Typical twist values for different single yarn continuous filament, World manmade fibre production volume and consumption, Points to be considered before going to produce a new commercial manmade fiber.

 

Definition and classification of Chemical fibers and regenerated fibers.

 

Regenerated Fibers: Technologies of formation of regenerated fibers, Types of regenerated cellulose fiber, Viscose fiber production, Different types of Viscose and acetate rayon and their properties.Understanding the three generations of viscose fiber (conventional viscose rayon, Modal and Lyocell (Tencel), Technical advantages of NMMO-process, Comparative performances of regenerated cellulose fibers, Innovative applications of regenerated cellulose fiber, different types of regenerated protein fibers and their respective physical and chemical properties.

 

Polyester Fibers: Raw materials of polyester fibers, Production of ethylene glycol, ethylene oxide from ethylene, ethylene glycol from ethylene oxide, Flow chart for TPA and DMT route, Technical aspect of polyester fiber manufacturing, Forms of different commercial polyester fibers and their respective applications. Physical and chemical properties of polyester fiber and fiber identification.

 

Polyamide Fiber: Raw materials for polyamide fiber, Nomenclature of fiber, chemical structure, physical structure, Difference between Nylon 6,6 and Nylon 6, Fiber manufacturing process, properties of fiber and fiber identification.

 

Acrylic Fibers: Raw materials, chemical structure, physical structure, Fiber manufacturing, Fiber properties and end use applications.

 

Polyurethane Fibers: Polyurethane fiber formation and its structural analysis, Two step and one-step process, Raw materials, Reactions of isocyanates, the order of reactivity of isocyanates with compounds containing active hydrogen, Spandex fiber, Spandex structure, chemical composition of hard and soft segment, Fiber manufacturing, Fiber properties and end use applications, identification of fiber

.

Polypropylenes; PVA; PVC and Elastomeric fibers.

 

High Performance Fibers: Concept of high performance fiber, different types Glass, Aramid, Carbon, Metalic , and Multicomponent fibers and their chemical composition, properties and end use applications.

 

Present trends of chemical fibers production and their economic and social aspects.

 

Textile Physics

 

Electrical Properties: Electronic properties of solids; Conductors and insulators; Capacitance; Di-electric constant; Effect of moisture; Measurement of di-electric constants of fibers, yarns and fabrics.

 

Static Electricity Formation: Theories of static electrification; Measurement of static charge; Explanation of the phenomenon of static electrification in textile; Its effect and remedies in textile processes.

 

Textile Yarns: Introduction; Interrelations between the structure and properties of fibers, yarns and fabrics; Definition of yarn; Classification of yarns; Yarn designation; Yarn Twist; Direction of twist; Amount of twist; Level of twist; Fabric appearance and twist direction; Yarn twist and fabric properties;  Determination of twist

 

Mechanical Properties of Yarns:Introduction; Mechanical properties; Tensile properties; Analysis of tensile behavior of continuous filament yarn; Limitations of Platt’s low strain equation; Modification of Platt’s low strain equation; Theoretical model of yarn; Analysis of large extension of yarns or geometry of large strains; Relation of filament extension to yarn extension; Effect of fiber length, strength and fineness on yarn properties;Effect of twist on the structure and properties of yarns

 

Yarn Geometry:Assumption of idealized yarn geometry; Basic geometry of twisted yarn; Derivation of equation for yarn count, twist angle and twist factor from idealized yarn geometry; Optimum Twist Factor; Twist contraction; Contraction factor; Retraction factor; Derivation of equation for contraction and retraction factor; Determination of limits of twist; Twist and fiber packing in the yarns; Open packing; Hexagonal close packing; Deviations from ideal forms; Concentrating factors; Disturbing factors; Packing fraction or packing density; Specific volume of yarn; Derivation of yarn diameter- For staple yarn, For Filament yarn; Relation of yarn twist, diameter and twist angle.

 

Fiber Migration: Defects of idealized helical yarn geometry; Fiber Migration; The parameters on which fiber migration depends; Ideal migration; Measurement of migration; Tracer fiber technique; Effect of tension on fiber migration; Condition of migration to occur; Fiber migration in ring spinning; Structural properties of rotor yarn.

 

Fabric Geometry: Geometry of plain woven fabrics; Calculation knowing crimp ratio and thread spacing; Geometry of jumped conditions; Crimp interchange; Effect of yarn flattening; Deformation of fabric; Application of cloth geometry; Tensile testing; Geometrical change during extension of fabrics; Fabric buckling, shear and drape; Geometry of plain knitted structure; Engineering design of fabric to meet specific mechanical properties; Prediction of tensile properties of fabrics;Cover factor; Fractional cover; Total cover.


TE-2204: Fabric Manufacturing Engineering – II (Sessional)    

3/2 Hours/Week          Credit: 0.75

 

Weaving

Mechanism of loom drive; Tappet shedding; Dobby shedding; Jacquard shedding; Crank beat-up; Cam beat-up; Conventional & electronic let-off & take-up.

 

Knitting

Stitches Produced by Varying the Timing of the Needles: Held, truck, miss/drop stitch formation technique; Notation diagram; Cam & needle arrangement for single jersey derivatives;

 

Straight Bar Frame: Knitting elements, operations & knitting actions.

Warp Knitting: Study on guides, guide bar, lapping movement, pattern mechanism and chain links; Machine parts, knitting element and knitting action of tricot, raschel, & crochet warp knitting machine; Let-off mechanism of warp knitting machine.

TE-2203: Fabric Manufacturing Engineering – II

4 Hours/Week Credit: 4.00

 

Weaving Mechanism: Chronological development of loom; Basic principle of weaving; Classification of loom; Types of loom; Basic loom motion; Loom drive and brakes.

 

Shedding: Geometry of shed; Shed characteristics; Different types of shed; Types of shedding mechanism; Crank shedding; Negative & positive tappet shedding; Construction of shedding tappet.

 

Dobby Shedding: Scope and classification of dobby; Conventional dobby mechanism; Electronic dobby & electronic shedding mechanism; Limitation of tappet & dobby shedding.

 

Jacquard Shedding: Scope; Types and Basic principle of Jacquard shedding.

 

Picking: Types of conventional picking; over picking, under picking; Calculation the velocity of weft inserting element, energy of picking, picking force& time for picking; Picking faults.

 

Shuttleless Weaving: An elementary idea on Projectile, air jet, water jet, rapier weaving machine; Special features of these machines.

 

Beating : Principle of crank and crank arm beating; Effect of crank arm and crank length; Sley eccentricity and its effects; Mechanism of cam beat-up, link beat-up & special beat-up; Forces involved in beating action.

 

Take-up and Let-off: Classifications of Take-up & let-off; Calculation of take-up constant from 5-wheel & 7-wheel take-up; picks/cm and rate of let off; Electronic take-up & electronic let-off mechanism; Necessary calculation.

Knitting: Study on weft knitting machines – Fabric machine, garment length machine.

 

Stitches Produced by Varying the Timing of Intermeshing: Held, tuck, miss/drop stitch formation technique & their uses; Notation diagram, cam & needle arrangement for single jersey derivatives.

 

Straight Bar Frame: Features, knitting elements, operations, knitting actions, advantage & disadvantage.

 

Basic Warp Knitting Principles: Terminology mechanism and classes of warp knitting machinery; Different components of warp knitting machine and their role (guide bar, needle bar, sinker bar, take up roller, yarn delivery, form of yarn delivery to warp knitting m/c., chain link and pattern drum mechanism); Lapping movement of guide bar (swinging and shogging motion); Basic overlap-underlap variations of guide bar; Basic stitches of warp knitting technology and their influences to fabric structure.

 

Tricot and Raschel machines; Knitting cycle of bearded needle; Tricot and single needle bar Raschel machines; Compound needle warp knitting machine; Crochet machine; Warping for warp knitting;

 

Tricot two full set guides bar m/c and its product; Rules for product. Rules for locknit, tricot, sharkskin etc. Fabric production; Surface interest, relief and open work fabrics; Calculations related to weft and warp knitting.

 

Laying in Warp Knitting:  General rules; Fall plate patterning; Full width weft insertion; Cut presser and miss-press structures. Aspects of knitting science – loop shape and loop length control; Yarn let-off; Weft knitted fabric relaxation; Knitted fabric geometry; Tightness factor; Robbing back.

TE-2104: Yarn Manufacturing Engineering – II (Sessional)       

3/2 Hours/Week                      Credit: 0.75

 

Short Staple

 

Draw schematic/material passage/gearing/motion transmission diagram of lap former, Drafting arrangement of lap former; Draw schematic/material passage/gearing/motion transmission diagram of comer, Drafting arrangement & combing operation of comer; Draw schematic/material passage/gearing/motion transmission diagram of roving frame, Drafting arrangement, draft calculation of roving frame; Calculation of required teeth of changeable gears (DCP, TCP, DCCP, TCCP, LCP, rachet etc.) for processing a particular roving hank in roving frame, Bobbin building mechanism and twisting mechanism of roving frame; Draw schematic/material passage/gearing/motion transmission diagram, drafting arrangement & draft calculation of ring frame; Delivery, middle, back roller & spindle speed calculation from gearing diagram; Bobbin building mechanism and twisting mechanism of ring frame; Calculation of required teeth of changeable gears (DCP, TCP, DCCP, TCCP, LCP, rachetetc) for processing a particular count in ring machine.

 

Long staple

 

Schematic/material passage/gearing/motion transmission diagram, drafting arrangement, draft calculation and coiling mechanism of draw frame-I, draw frame-II; draw frame-III; Calculation of required teeth of changeable gears (DCP, DCCP etc.) for processing a particular sliver hank in draw frame-I, draw frame-II; draw frame-III machine; Draw schematic/material passage/gearing/motion transmission diagram, drafting arrangement, draft calculation, winding mechanism of jute spinning frame; Calculation of required teeth of changeable gears (DCP, TCP, DCCP, TCCP etc.) for processing a particular count in slip draft/apron draft spinning machine; Schematic/material passage/gearing/motion transmission diagram of spool & cop winding machine.

TE-2103: Yarn Manufacturing Engineering – II                         

4 Hours/Week               Credit: 4.00

 

Short Staple

 

Lap Former: Function, Features of modern lap former machine; Different types of lap former; Scenario of fiber hook from card to comber; Aspects of lap quality; Factors influencing lap characteristics & hairiness; Description of drafting units; Draft amount; Roller setting; Calculations- Surface speed of various parts (delivery, middle, back roller), Main draft, Back draft, Total draft, Production.

 

Comber: Objects of the combing process; Benefits of combing; Sequences of combing operations; Parameters influencing the combing operation; Influence of the feed stock on combing system, Modern preparation system (sliver doubling system); Influence of combing operation on quality; The noil extraction; The quality of the combing operation in forward and backward feeding; The influence of machine components and settings on combing operations; Drafting arrangement; Sliver coiling system; Automation in the combing section;  Causes & remedies of too many neps, higher Um% in the sliver; Calculations- Surface speed of various parts (delivery, middle, back roller), Main draft, Back draft, Total draft, Nips/min, Waste%, Production.

 

Roving Frame: Objects of roving frame; Main components of roving frame; Description of different types of drafting systems, Arrangement and distance setting of drafting elements; Amount and distribution of draft, Objects of using condenser, distance clip, false twister in roving frame; Principle of twist insertion; Amount of twist for different roving hank & materials; Principle of winding; Bobbin building mechanism; Roving tension; Process parameters in roving frame; Block creeling& piecing; Changeable gears and their impacts; Calculations- Surface speed of various parts (delivery, middle, back roller, flyer), Main draft, Back draft, Total draft, Twist, Teeth of changeable pinion & pulley (DCP, TCP, Motor & machine pulley etc.), Production, Efficiency, Faults & remedies etc.

 

Ring Frame: Introduction; Functions and mode of operation; Structural configuration- Machine components, Bobbin creel, Drafting system-influence on quality and economy, conceptual structure of the drafting system, spinning geometry, spinning triangle, Top rollers, Pressure roller loading, Fiber guidance devices; Spindle- thread line, spindle structure, spindle bearing, influence of spindle on spinning process; Spindle drive- types, 4-spindle tape drive, tangential belt drive; Thread guide devices- thread guide, anti-ballooning device, separator; Ring- importance, features, requirements, shape, ring material; Ring traveler- task, types, shape, traveler material, traveler mass & number, traveler clearer, Winding of cops- build of cops, cops shape, winding process, winding mechanism, winding forming the base, motor powered cop formation, force and tension relationships during winding by using travelers; Automation,  Doffing, Waste extraction, Causes and remedies of end breakage, Limitations; Calculation-Surface speed of various parts (front roller, middle roller, spindle, traveler etc.), Draft, Twist, Teeth of changeable pinion & pulley (DCP, TCP, motor & machine pulley etc.), Production, Efficiency etc.

 

Compact Spinning: Principle of compact spinning, Comparison of ring and compact spinning, Advantages and limitation, Compact yarn quality.

 

Winding:  Objects; Waxing process; Yarn faults and clearing; Types of electronic yarn clearers; Yarn clearer settings; Fault channels and fault classification;  Splicing; Different types of winding package; Winding package defects and their remedy.

 

Long Staple

 

Drawing Frame: Definition & objects of drawing& doubling; Reach & nip; Types of drawing frame; Drafting system; Push bar first drawing frame; Double thread screw gill second drawing frame; Screw gill triple thread finisher drawing frame; Arrangement of drawing & doubling; Pitch of faller and pitch of screw; Percent lead; Suitable drafts and roller settings; Sliver weight at delivery of different machine; Faller bar propelling mechanism; Importance of roller pressure; Can driving & tramping arrangement; Size of sliver can; Desirable features of drawing frame; Changeable gear and pulley in draw frame; Calculation- Surface speed of various parts (fluted feed roller, back roller, delivery roller etc.),Faller bar lead%, Faller bar drops per minute, Draft, Draft constant, Teeth of changeable pinion & pulley (DCP, speed change pinion etc.), Sliver weight of feed & delivery, Production, Efficiency etc.

 

Spinning Frame: Grist and twist; Structural configuration of the flyer spinning machine; Description of slip draft, gill and apron draft spinning machine; Types of drafting system; Pitch; Bobbin traverse; Bobbin sizes; Inverted breast plate; Drag; Bobbin building mechanisms; Winding on revolution and winding on motion; Builder traverse motion; Back dropping & ends down; Twisting; Twist factors; Disturbance of twist; Balanced & unbalanced yarn; Amount of twist necessary in jute yarns; Relationship of twist, yarn count and twist change pinion; Relationship of draft, yarn count and draft change pinion (DCP); Calculation- Surface speed of various parts (flyer, bottom roller, retaining roller etc.), Draft, Draft constant, Teeth of changeable pinion & pulley (DCP, TCP, speed change pinion etc.), Yarn count, Production, Efficiency etc.

 

Winding: Spool winding- Principle motions of spool winding, automatic stop motion, Diameter of spool, Defects in spool; Cop winding- Adjustment of cop length & diameter.