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PROTECTIVE CLOTHING

MUKUL CHANDEL


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Technicaltextiles

Agrotech

Buildtech

Clothtech

Geotech

Hometech

Indutech

Medtech

Mobiltech

PROTECH

Sportech


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Defence

textiles


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PreTwentiethce


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Pre Twentieth centuryNormally heavy & uncomfortable uniform for wear.

Produced from natural fibers or heavy metal is used.

Uncomfortable for soldiers.

TwentiethLight weight & dmany high perfofibers came into


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Earlier silk & metal was used.

But now high Performance fibres are used like Kevlar - Polyphenylene terephthalamide, 5 times stronger

than steel. Properties like tensile strength at lowweight, low elongation at break, high modulus

high chemical resistance etc.

Dyneema polyethylene, 10-100 times stronger than steel. Pvery high strength to weight ratio & light enougwater.

Twaron - para-aramid, 5 times stronger than steel


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Spectra - polyethylene fibers.10-100 times strongerhigh strength.

Spider silk protein, 25 times stronger than


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DURABILITY

COMFORT

LIGHTWEIGHT


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PROPERTY COMMENTS

Light weight and low bulk Items have to be carried

individuals.

High durability and dimensional

stability

Must operate reliably in

conditionsGood handle and drape comfortable

Low noise and antistatic No rustle and no sparks


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PROPERTY COMMENTS

Water-repellent, water proof & wind

proof

For exterior materials ex

cols weather

Thermally insulating For cold climates

Water vapour permeable For clothing and persone

equipment

Rot-resistant For tents, covers, nets

UV resistant light Environment with sunlig

biodegradable If discarded or buried


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PROPERTY COMMENTS

Visual spectrum Exposed materials match

colours

Ultra voilet In snow & ice regions

Near infrared To match reflectance of b

Far infrared To minimise heat emitted

humans & equipment

Acoustic emissions Rustle noises detected by

microphones & sensors


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-Under UV band:

Titanium dioxide pigmcoating

Barium sulphate

-Under visible band:

Khaki, brown, black a

colours used for uLight weight polyuret

acrylic coated nylo


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-Under visible band:

Khaki, brown, black and green used for uniforms.

Light weight polyurethane or ac

nylon


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TYPES COMMENTS

Ballistic fragments Bombs,grenades

Low & high velocity bullets Hand guns, pistols

Chemical & biological agents Blood agents, nerve agen


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PROPERTY COMMENTS

Easy care & min maintainance Non iron, smart

Long storage life & minimal cost War stock to be stored fo

disposable Nuclear & chemical cont


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fragmentsbullets

other

59%

19% 22%

Causes for ballistic

casualties in general war


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Fabric layers in thearmor

Energy dissipation andreduction

Weave

Plain balanced weave

More cross-over points Large surface area .

Requirem

Ballistic p

Comforta


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0

5

10

15

20

25

100 200 300 400 500 600

Fabric

energy

(J)

Energy absorptioncharacteristics

Impact by project

Yarn impactcharacteristic

Cloth impactcharacteristic

At impact mome

Fabric energy absorand Ballistic lim

Yarn slippage an

Ballistic resistanStriking velocity (m/s)


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Ballisticresistancematerial

Required degreeof protection

Final weight ofuniform

Comfort and easeof movement

Blunt traumaprotection

steel1978

1992

500

720 750

3836

32

Ballistic material perversus weigh

ballistic limit (m/s) w


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no armor helmets areworn

armor isworn

armor andhelmet is

worn

80%

61%

40%

15%

Casualty levels


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Gearing towards an integrated future

The general aims of future systems are: Improve protection against natural and battlefield threats Maintain thermo-physiological comfort or survival in extreme Improve compatibility between and within different clothing Reduce weight and bulk of materials

Integrate functionality so that fewer layers provide multi laye Reduce life cycle costs by making systems more effective, dura

recyclable and by buying few components in the system


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C


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Controlled release mechanism

Regeneration model.

Barrier and blocking mechanism.

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