Ring, rotor, compact, air-jet and other forms of spinning are discussed in this presentation along with Illustrations. the crisp and clear explanation helps in understanding the basic know how of advance methods of spinning
TOPICS COVERED: ASOLUTE AND RELATIVE HUMIDITY MOISTURE REGAIN AND CONTENT Regain-Humidity Relations of Textiles Regain VS Relative Humidity Curve Factors Affecting the Regain of Textile Materials Effect of moisture on properties
Ring, rotor, compact, air-jet and other forms of spinning are discussed in this presentation along with Illustrations. the crisp and clear explanation helps in understanding the basic know how of advance methods of spinning
TOPICS COVERED: ASOLUTE AND RELATIVE HUMIDITY MOISTURE REGAIN AND CONTENT Regain-Humidity Relations of Textiles Regain VS Relative Humidity Curve Factors Affecting the Regain of Textile Materials Effect of moisture on properties
Pile fabrics: Manufacturing methods include woven pile fabric formation & others methods such as knit pile fabric, tufted pile fabrics etc. A "Terry" or a "Terry Towel" as is generally known is a woven pile fabric formed by slack tension weave process. of weaving.
Needle punch is the second-largest market segment in terms of capacity after the spunbond process segment. It is a continuously growing market with new opportunities and growing demands in its core applications like automotive, geotextiles, filtration, and home products.
For more information log on to www.ategroup.com.
Pile fabrics: Manufacturing methods include woven pile fabric formation & others methods such as knit pile fabric, tufted pile fabrics etc. A "Terry" or a "Terry Towel" as is generally known is a woven pile fabric formed by slack tension weave process. of weaving.
Needle punch is the second-largest market segment in terms of capacity after the spunbond process segment. It is a continuously growing market with new opportunities and growing demands in its core applications like automotive, geotextiles, filtration, and home products.
For more information log on to www.ategroup.com.
This paper deals with the result of an investigation by using different count yarn but same
parameters of knitting machine to produce cotton-elastane single jersey fabric. Here,the all parameters of
knitting machine including gauge, dia ,Stitch length, rpm, machine tension etcare same. Dyeing process also
carried out at same parameter for all fabrics. Finishing process like Heat setting, Stentering, compacting are
done in same condition But we use different count cotton yarn. In this paper, we mainly deal with the physical
properties of single jersey cotton fabric. we try to identify how the properties of single jersey knitted fabric like
fabric diameter(gray& finished condition) ,WPI&CPI(gray& finished condition),Fabric GSM(gray& finished
condition),Shrinkage (%) length &width wise, spiralityare changing with Count .Finally the findings are as
expected with some variation with the result that are thought theoretically.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
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Design analysis of Cotter joint used in piston rod and crosshead a.pptx138HemangiAhire
Design analysis of Cotter joint
used in piston rod and crosshead
1.Abstract
2.Introduction
3.Literature survey
4.Design of cotter joint
5.Cotter joint to connect piston rod and crosshead
6.Example problem statement
7.3d modelling of cotter joint
8.Analysis of cotter joint
9.Result and discussion
10.Conclusion
11.Suggestion for future
12.References
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
3. 1.Prediction of the maximum sett (density) of fabric and fabric
dimensions;
2.Find out relationship between geometrical parameters (picks
and ends);
3.Prediction of mechanical properties by combining fabric and
yarn properties;
4.Understanding fabric performance (handle and surface
effect.
INTRODUCTION
The objectives of fabric geometry is to:
Structure of a woven fabric is defined by weave pattern, thread
density, crimp and yarn count
3
4. Jammed structure
A woven fabric in which warp & weft yarns
don’t have mobility within the structure as
they are in intimate contact with each other
are called jammed structure. In such a
structure the warp & weft yarns will have
minimum thread spacing.
8. Jamming Condition of a fabric
• During jamming the straight portion of the
intersecting yarn will vanish so that-
Jamming warp direction Jamming weft direction
l1–Dθ1 = 0 h2 = D(1 –cosθ2)
l1/D = 0 p1= Dsinθ2
So,
h1 = D(1 -cosθ1)
p2= Dsinθ1
9. Jamming both warp & weft direction
D = h1 + h2
D = D(1 -cosθ1) + D(1 –cosθ2)
Cosθ1 +cosθ2 = 1
10. Square Fabric
• A truly square fabric has equal diameter of
both warp & weft, equal spacing, equal crimp
p2= p1 , c1=c2 , h1=h2 , θ1= θ2
D=2d= h1+h2=2*4/3 p √c
√c =3/4 * d/p
11. Square Jammed fabric
For a sq. jammed fabric θ1 =θ2
So,
Cosθ1 +cosθ2 = 1
Cosθ = ½
θ = π/3
p=Dsinθ
&
l=Dθ
12. Racetrack Model
• In the racetrack model, a and b are maximum and minimum diameters of
the cross-section. The fabric parameters with superscript refer to the zone
AB, which is analogous to the circular thread geometry; the parameters
without superscript refer to the racetrack geometry, a repeat of this is
between C and D.
Then the basic equations will be modified as under:
p2’ = p2 – (a2 – b2)
l1’ = l1 – (a2 – b2)
h1 + h2 = B = b1 + b2
Also if both warp and weft threads are jammed,
the relationship becomes
13. Crimp of sq. jammed fabric
• The crimp in fabric is the most important parameter which influences
several fabric properties such as extensibility , thickness , compressibility
and handle. It also decides quantity of yarn required to weave a fabric
during manufacturing.
The crimp of a sq. jammed fabric is about 20.9 %
we know,
Crimp (c) =l/p -1 [p=Dsinθ &l= Dθ ]
= Dθ/Dsinθ -1
= θ/sinθ – 1
= π/3/sin π/3 - 1 [θ = π/3]
=1.209 -1
= .209
So, c % = 20.9 %
14. Cover factor of square jammed fabric
• In fabric, cover is considered as fraction of the total fabric
area covered by the component yarns.
The fractional cover factor (d/p) = 1/√3
1 X n = 1/√3
28 X √N
n/ √N = 16.2
So, cover factor of both warp & weft is 16.2 AC = 2d
k1 = k2 =16.2 AB = d
And Fabric cover factor is 23 So, BC = √3 d
k1 + k2- k1k2/28 = 23 p = √3 d
15. Relation between warp & weft cover factor
• Where β = d2/d1
• For sq. jammed fabric d2 = d1
• So, β = 1
16. Application of jammed fabric
Jammed fabric are closely woven fabric & find
application in water-proof , wind- proof, bullet-
proof requirements.
17. References
• Woven Textiles: Principles, Technologies and
Applications :- Edited by K Gandhi
• Woven Textile Structure: Theory and
Applications :- By B K Behera, P K Hari