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Head Nano-Titanium Tennis Racquet

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by

Xinni Chew

on 1 November 2013

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Transcript of Head Nano-Titanium Tennis Racquet

Head® Nano-Titanium Tennis Racquet
Viet
Jean-Marc
Jennet
Orlina
Nathaniel
Xinni
Head®
Nano Titanium Racquets
Lightweight racquets structured at the molecular level
Integrated Nano material strengthens the original Titanium weaves
Providing a stronger, faster and more stable racquet than ever before
Why is Head Titanium Racquet important?
Tennis is an international level sports well recognized throughout the world
Renowned brand
Improves player's performance
Potential Market
Tennis is the fastest growing sport in 2000-2010.
Good News for Tennis Industry
Market research by Tennis Industry Association
Increasing trend
Greatest % increase in youth racquets
Similar Products
This technology can be applied to:
Squash
Softball/Baseball
Golf
Badminton
Similar Products (Wilson)
2004: nCode
Contains silicon dioxide nanoparticles
2007: [K] Factor
Silicon dioxide nanoparticles not only fill gaps but also bonded to carbon fibers
2010: BLX
Replaces carbon fibers with basalt fibers to reduce vibration in the racquet
Similar Products (Yonex)
Golf Club: NanoSpeed 3i
uses carbon nanotubes
makes heads stronger
transfers energy through the shaft more efficiently
golf balls travel faster
Similar Products (Yonex)
Badminton: NanoSpeed 9900
Fullerene shaft for speedy racquet handling
Football-like structure
Higher repulsion power and greater stability
Non-nano Equivalents
Wooden Racquets
68.6 x 22.9cm, 400g from SGD13-140
Metal Racquets
73.7 x 31.8cm, 280-400g around SGD40
Nano-composite Racquets
73.7 x 31.8cm, 220-330g around SGD240
The Wooden Racquets
Ash and beech usually used as main material
In order to be sufficiently stiff and durable, those rackets had to be fairly heavy
Not used since 1984 (but still available)
- in 1930, new glue allowed the fabrication of new wooden rackets
The Metal Racquets
Steel tennis racquet in 1965
Aluminium racquet in the mid 70s
- alloy with 2% silicium or 10% zinc and traces of magnesium, copper and chromium
- lighter and less expensive
- more bendable: more durable but unpredictable behaviour
Physics Phenomenon
When ball hits the racquet, it loses some energy because of racquet deformation

Ball is present in string plane for 3-6 ms, but racquet needs 15-30 ms to return to original shape
Head Ti Nano Racquets
Higher stiffness, higher string tension, lighter

Endorsed by top tennis players








How to increase power ?
Higher stiffness, smaller energy absorbed and higher return speed





Head Ti Nano: 450% improvement in the hardness and 65% increase in elastic modulus

Titanium Matrix Nano Composites
Carbon Nanotubes
Used as reinforcement composite material in MMC
Atomic Bonding
Mechanical Properties
a. High Tensile Strength
b. Flexible
c. Lighter Weight
Titanium Matrix Composite
Corrosion Resistance
High Strength to Weight ratio
Stiffness
Titanium Matrix Nano Composites
Multiphase Solid Material with Nano-scale repeatedly distance between their phases.
Why integrate Nano Composites?
Higher surface to area volume ratio
Strong interfacial adhesion between CNTs and metallic matrix
Enhanced mechanical properties
Fabrication Process
Powder Metallurgy
450% improvement in the hardness and 65% increase in elastic modulus

Process Fabrication
1. Homogenous Dispersion
Improved mechanical properties
(Attributed to grain growth inhibition caused by interlocking nanotubes)
Challenges of Uniform Dispersion of CNTs
CNTs have tremendous surface area - 200
Leads to formation of clusters
Clustering leads to concentration of reinforcement at certain points
Unachievable --> worsen overall mechanical properties

Process Fabrication
2. Interfacial Adhesion
Applied stress is transferred to the high strength fibre through the interfacial layer

Strong interface
- very strong composite at the expense of ductility
Weak interface
- inefficient utilisation of fibre properties
Solution:
Wetting of the fibre by the liquid metal is essential for good interfacial adhesion
References
http://web.eng.fiu.edu/agarwala/PDF/2010/12.pdf
http://www.azonano.com/article.aspx?ArticleID=3149
http://en.wikipedia.org/wiki/Powder_metallurgy
http://science.howstuffworks.com/nanotechnology5.htm
http://sportstechethics.blogspot.sg/
http://nanoall.blogspot.sg/2012/08/nanoparticle-disposal-and-exposure.html
http://www.colinthestringer.com/pros-strings/
http://acolomb.webs.com/torqueandmomentum.htm
http://www.physics.usyd.edu.au/~cross/tennis.html
https://illumin.usc.edu/printer/50/the-quest-for-the-perfect-racket-advances-in-tennis-racket-design/
http://www.tennisindustrymag.com/articles/2004/05/make_any_racquet_play_better_g.html
http://web.eng.fiu.edu/agarwala/PDF/2010/12.pdf
http://www.tennisexpress.com/weight-balance-and-swing-weight-demystified
http://www.doittennis.com/pop_racquets_info.html
http://espn.go.com/blog/playbook/tech/post/_/id/3853/gear-test-head-youtek-graphene-racket
Full transcript