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- Testing Of Aerospace Textile Composites
- Dr. N.Vasugi,
Reader , Textiles and clothing, Avinashilingam University
L.Sasikala, S.Sundaresan, K.Saravanan and M.Dhinakaran
Department of Textile Technology, Kumaraguru College of Technology
The South India Textile Research Association, Coimbatore
SPECIAL STORY
REGULAR FEATURES
TREXCLUSIVE
- “Committed employees & operational efficiencies contribute substantially to profitable operations”
- P. G. Makhija
Executive Director - Ambuja Exports Ltd., Ahmedabad
Shri P.G. Makhija, Executive Director & CEO of Gujarat Ambuja Exports Ltd, Ahmedabad - a 100% EOU unit having 75000 spindles capacity. He holds post-graduation in Commerce, a degree in Law and Gold Medals in his academic career. With his varied experience in the fields of Finance, Management, General Administration, Joint Venture Negotiations etc., he could steer the unit out of industry crisis, when many units in India closed down; and restructured it into modern, competitive, vibrant and profitable company, constantly updating and expanding spinning EOU, to remain frontline in the global market.
Shri Makhija shared his views and thoughts on Indian textiles sector with TEXTILE REVIEW.
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ANALYSIS
Testing Of Aerospace Textile Composites
Dr. N.Vasugi,
Reader, Textiles and clothing, Avinashilingam University
L.Sasikala, S.Sundaresan, K.Saravanan and M.Dhinakaran
Department of Textile Technology,
Kumaraguru College of Technology
The South India Textile Research Association, Coimbatore
There has been a growing awareness of the importance of textile-reinforced composites. It plays an important role in the advancement of the aeronautics and aerospace industries. Composites have been proven as weight saving materials. In aerospace engineering, unidirectionally reinforced composite materials are very common for high performance parts requiring low weight. Main composite types are Carbon Fibre Reinforced Plastics (CFRP), Glass Fibre Reinforced Plastics (GFRP) and metal-aluminium laminates (e. g. Glass Fibre Reinforced Aluminium). This kind of material is used because of its high strength-to-weight ratio and high stiffness-to-weight ratio under membrane loading. The high degree of heterogeneity of textile composites was found to be the primary problems in analysis and testing.
For textile composites, a nondestructive test could save time and cost. The physical properties such as moisture content, weave architecture, void content and fiber volume fraction can also be derived. The new microwave testing techniques for detection of damage, defect and de-lamination of textile composites will be useful to aerospace
In this paper, Non Destructive Testing (NDT) techniques such as reflection, transmissions etc., which predict some of the properties of textile composites, are discussed. These parameters can be correlated with physical properties such as volume fraction, voids content and moisture content by suitable modeling and calibration. The most applied NDT method is ultrasonic testing (manual as well as automatic, in pulse echo and through transmission, with single element transducers and linear phased array probes). But also resonance methods, shearography and thermography and special methods are used.
SPECIALSTORY
Optimisation of Roller Settings in Sliver Lap, Ribbon Lap and Comber Draw Box K.P. Chellamani, G. Nagarajan & V.J. Kumaar
The South India Textile Research Association, Coimbatore
In yarn manufacturing process, successive operations involving repeated use of drafts and doublings are employed to reduce the size of the strand of fibres until it is sufficiently thin and regular to form a good quality yarn. The basis of any roller drafting system requires a pair of back rollers and front rollers. The distance between the nips of the back rollers and front rollers is called ratch. Under normal conditions, fibres extending longer than the ratch will be held by both the front and back rollers at the same time, and therefore may be broken. Hence, it is a general practice to set the distance between the back and front rollers (ratch) a little wider than the length of (certain proportion of) longer fibres in the flock. Authors' says that "During drafting, one has to avoid the damage of the longer fibres; but if the setting is too wide, shorter fibres will float and they will cause uncontrolled movement of the fibres in the drafting zone. Hence, a compromise is generally made between these two to get optimum yarn quality". "The measurement of individual fibres would have been the ideal method but that is time consuming and laborious if the same has to be carried out manually. With the advent of Advanced Fibre Information System (AFIS) by Uster and similar instruments by few other companies, now it is made possible to measure individual fibre length accurately" they added.
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NEWPROJECTS
This section provides the information about the new projects:
- Mangrul Mills is expanding its cotton carded & combed cotton yarn unit at Mangrul in Nagpur district of Maharashtra.
- Pratibha Syntex is expanding its cotton & synthetic yarn unit at its Pithampur facility in Dhar district of Madhya Pradesh.
- Garg Acrylics is setting up a cotton yarn-spinning unit at Paddi in Ludhiana district of Punjab.
NEWSSNIPPETS
A regular feature covering news on the topics -
- Arvind mills selling land
- Textile industry awaits notification of announced sops
- Exports to China & hoarding by MNCs sap booming cotton, push up prices
- Arvind, Hartmax pact to bring more retail brands into India
- Gujarat set to reduce Bt cotton seed prices
- Growing consumption makes Re-hit textile exporters raise toast
- Jute growers too move to paddy
- Miffed VF may buy out Arvind in JV
- Gujarat to toe AP line on reducing prices of Bt cotton seeds
- Alok, Welspun may team up to run NTC mills
- Century Textiles FY08 net up 2.43%
- GHCL homes in on US furnishing firm
- State attract two major projects
- Artex Apparels head to Europe
STATISTICS
A regular feature deals with the statistics covering:
- Plan Allocation Of The Ministry Of Textiles
- Textile Exports
- Per Capita Availability Of Cloth
- Production of Man-Made Filament Yarn (In Mn. Kg.)
TEXTILE STOCKSCAN
Under the regular column, experts Dilip and Rushik Bhatt discus about the Gujarat Ambuja Exports Ltd. (GAEL). GAEL has built air-conditioned plant in appx. 100 acres land for cotton yarn production at Himmatnagar (Gujarat). The infrastructure was setup by timely upgraded international technology and textile machinery. GAEL has capative power plant which has capacity of 13 MW with engine from Pielstick and MAN B&W. The plant has been equipped for the production of 43 TPD of ring spinning and 8 TPD of open end yarn. It has capacity of 73000 spindles for ring spinning and 1080 rotors for open end yarn. It has been producing ring spun yarn, carded and combed for weaving & knitting single & TFO Double. GAEL has exported premium cotton yarn to Europe, South East Asia, Far East & the Middle East for manufacturing of latest fashion garments.
GAEL's books of accounts for FY 07-08 show consistent topline growth quarter by quarter but bottomline didn't correlate it. At the end of Q4 FY 07-08, total income stands at Rs. 601.65 Cr. which is increased by 68.68% YoY and 20.09% QoQ. Full year comparison of FY 07-08 and FY 06-07 also shows growth of 30% topline and 66% in bottomline. Authors' says that "If we look at the stock holding pattern of it reflects stagnant performance and no major change in any segment for last quarter of FY 07-08. GAEL was treaded with very thin volume and narrow range between Rs. 55 and Rs. 46 since April 2008. Stock was corrected more than 60% from 52 week high of Rs. 104.60 made in January'08". "Currently stock is treading at Rs. 49.70, with a view of near term trading range we recommend "Sell" at current market price" they advise.
A regular monthly feature giving 52 week high / low and previous as well as current mid month quotation of around 40 textile companies with market cap in excess of Rs. 100 crore.
EXPORT TRADEINQUIRY
A regular feature.
CAREEROPPORTUNITIES
Career Opportunities a profile of the Kumaraguru College of Technology.
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