ANNEX-L
T.R.
LAND FORCES COMMAND
8TH MAJOR MAINTENANCE CENTER COMMAND
AFYONKARAHİSAR
TECHNICAL SPECIFICATION OF POLYETHYLENE BASED BALLISTIC PROTECTIVE FABRIC
SPECIFICATION NU:
8ABMK-K-465
DATE:
JUNE 2012
1. This approved specification goes into effect
beginning from date of issue.
2. Date of annulment of this
specification is 26th June 2017.
approved
3. Any changes can not be made on this
approved specification.
4. This approved specification consists of 7
(seven) sheets including its cover page.
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ANNEX-L
8ABMK-K-465
JUNE 2012
1.
SUBJECT
This specification is about technical features, examination and inspection and other
related subjects of Polyethylene Based Ballistic Protective Fabric that is to be bought for needs
of Turkish Army Forces.
2.
GENERAL MATTERS
2.1
Definitions
2.1.1
Areal Density: Ratio of test plate heaviness to plate’s surface area which is shot at.
2.1.2
Back Face Signature: Permanent deformation which occurs on backfill material
contacting back face of test plate, after a shot which is not caused perforation.
2.1.3
Perforation: Permanent deformation which occurs on test plate as a result of a full or
partial bullet entering on one face of test plate and exiting from the other.
2.2
Abbreviations
2.2.1
Fabric: Polyethylene Based Ballistic Protective Fabric
2.3
Conditions of Use
2.3.1
To be used in production of ballistic protective armor plates.
3.
REQUIREMENTS AND FEATURES
3.1
General Requirements
3.1.1
Amount of the fabric which is going to be purchased will be as stated in administrative
specifications.
3.1.2
Matters about quality insurance and product quality certificate will be according to
current TAF Directive of Product Purchase Quality Insurance Service principles, as stated in
administrative specifications.
3.1.3
Codification is going to be made according to operative The Ministry of Defense
Directive of Codification Services principles.
3.2
Technical Requirements
3.2.1
Color shade differences between main purchase sample of fabric and the fabric will
be at least 3-4 (three dash four).
3.2.2
Fabric material type will be polyethylene.
3.2.3
Fiber type of fabric will be spun lace which is formed of overlapping layers of parallel
settled filaments.
3.2.4
Square meter weight of fabric will be between 226-267 (two hundred twenty six dash
two hundred sixty seven) g/m2.
3.2.5
The width of the fabric with tolerances will be as stated in administrative
specifications.
3.2.6
Density of the fabric will be 0,94±0,04 (zero point ninety four plus minus zero point
zero four) g/cm3.
3.2.7
Matters related to production date and shelf life of fabric will be as stated in
administrative specifications.
3.2.8
Information printed on fabric will be as stated in administrative specifications.
3.2.9
When the test plates subjected to test, which are prepared in a way that it carries the
properties stated ballistic features definition method, they should provide the aspects stated below.
3.2.9.1
No perforation will occur on the test plates when all shoots has been made.
3.2.9.2
The back face signature depth occurs on the backfill material as a result of first shoot
and the highest remaining velocity shot will be 44 (forty four) mm at the most.
3.2.10
For fabric, the number of defects, which are defined at Chart-1 as critical, big and
small defects, can not be above the number of “Acceptable Defect” which are defined according to
criteria at Chart- 2.
3.3
Packaging and Labeling Requirements
3.3.1
Matters related to packaging and labeling will be as stated in administrative
specifications.
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JUNE 2012
4.
TAKING SAMPLES FOR EXAMINATION AND INSPECTION
4.1
Process of taking samples for examination and inspection is going to be made
according to current TAF Directive of Product Purchase Examination, Inspection and
Acceptance essentials.
4.2
Fabrics submitted to examination at one time considered as a batch.
4.3
Sample amount which should be taken from the fabric for physical examinations will
be in accordance with batch size as stated in Chart-2.
4.4
Sample amount of fabric as set for laboratory examination will be as stated in Chart-3.
4.5
The fabric submitted to examination for ballistic properties, will be used as full width
and for a set 75±1 (seventy five plus minus one) m2 sample will be taken.
5.
EXAMINATION AND INSPECTION
5.1
General Matters
5.1.1
Examinations and inspections are going to be made according to current TAF
Directive of Product Purchase Examination, Inspection and Acceptance essentials.
5.1.2
All the devices, vehicles, appliances, testing and measurement devices, consumption
materials and documents needed during examination will be provided by contractor; auxiliary staff
and the environment will be provided by contractor and inspection expenses will be met (including
analysis and test expenses which can not be made TAF laboratories) by contractor as stated in
administrative specifications.
5.1.3
A document indicates that all equipment and measurement devices provided by
contractor, which are going to be used during inspection, are calibrated by accredited
firm/corporation or establishment, will be ready during the examination and will be submitted to
Commission of Inspection and Acceptance.
5.1.4
The matter that contractor will be responsible for accidents and damages happened
during the examination due to production and design errors will be as stated in administrative
specifications.
5.1.5
Main purchase sample will have the characteristics referenced.
5.1.6
Matters about the ballistic tests which can not be made at TAF (Turkish Armed
Forces) laboratories will be as stated in administrative specifications.
5.2
Examinations
5.2.1
Physical Examination
5.2.1.1
Visual Test: Matters stated in third clause of directive, will be examined by eyes.
5.2.1.2
Measurement Examination: Matters stated in third clause of technical directive, will be
examined with proper and calibrated tools. Determination of tolerances about quantative
requirements and specifications will be made as stated operative Ministry of Defense Directive of
Specification Services.
5.2.2
Laboratory Examination: Laboratory tests/analyses and matters to be controlled which
stated in third clause of technical directive will be tested (including ballistic test).
5.3
Methods of Examination and Inspection
5.3.1
Square Meter Weight Determination: Square meter weight determination will be made
according to TS EN 29073-1 dated December 1998.
5.3.2
Texture (weawing) Type Determination: Fabric determination will be made with the
help of a magnifying lense
5.3.3
Material Type Inspection: Material type determination will be made with Fourier
Transform Infrared spectrometer or another suitable method in use.
5.3.4
Density Determination: Density determination will be made according to TS 1310
Metot A-1 dated March 1973.
5.3.5
Color Difference Determination
5.3.5.1
Color Difference Determination will be made by examination under D65 standard light
source.
5.3.5.2
Inspection will be made according to TS 423-2 EN 20105-A02 clause 2.5.
5.3.6
Determination of Ballistic Properties
5.3.6.1
Test plates will be prepared for ballistic tests in the amount stated below.
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JUNE 2012
5.3.6.1.1 4 (Four) test plates will be prepared for the test which is going to be made with G3 rifle
bullet.
5.3.6.1.2 4 (Four) test plates will be prepared for the test which is going to be made with AK47
rifle bullet.
5.3.6.2
Ballistic test plates will be prepared as stated below.
5.3.6.2.1
Equal sized fabric layers which will be pressed to the test plates at one time and
process information that helps production providing ballistic criteria (pressure, heat and process
duration of these) will be submitted as written by the contractor.
5.2.6.2.2
Test plates will be produced by using sample fabrics and according to process
information given by contractor.
5.3.6.2.3
Test plates will be produced in a way to have equal number of layers.
5.3.6.2.4
The surface of the test plate to be shot at will be 250±1x300±1 (two hundred and fifty
plus minus one multiply three hundred plus minus one) mm.
5.3.6.2.5
Every test plates areal density will be 1,67 (one point sixty seven) g/cm2 at most.
5.3.6.3
Test plates will be tested with 8±1 (eight plus minus one) mm trauma decreasing
sponge plate which is put behind the plate and features of it stated below.
5.3.6.3.1
Material type will be polyethylene.
5.3.6.3.2
Density will be 33±4 (thirty three plus minus four) kg/m3.
5.3.6.3.3
Tensile strength will be at least 0,25 (zero point twenty five) N/mm2.
5.3.6.3.4
Elongation at break will be at least % 300 (three hundred percent).
5.3.6.3.5
Compression stress will be % 5 (five percent) at most.
5.3.6.4
Matters related velocity measurement equipment and backfill material, which will be
used in ballistic test, will be as expressed below.
5.3.6.4.1
Velocity measurement equipment with 2 (two) sensor will be used to determine bullet
velocity.
5.3.6.4.2
Velocity measurement equipment which will be sited as mid point of two sensors is
250±2,5 (two hundred and fifty plus minus two point five) cm away from target.
5.3.6.4.3
To measure the back face signature which occurs after shooting oil based modeling
clay or glass cement will be used.
5.3.6.4.4
Suitability of backfill material will be controlled by a drop test on a steel ball before
every six shot ballistic test sequence.
5.3.6.4.5
Matters related to drop test will be as stated below.
5.3.6.4.5.1 The diameter of steel ball that will be used in drop test, will be 63,5±0,05 (sixty three
point five plus minus zero point zero five) mm.
5.3.6.4.5.2 Weight of steel ball, which will be used in drop test, will be 1043±5 (one thousand
forty three plus minus five) g.
5.3.6.4.5.3 Steel ball which will be used in drop test, will be dropped from 200±2 (two hundred
plus minus two) cm height in a way that it freefalls onto backfill material.
5.3.6.4.5.4 Steel ball left for freefall will be fell onto backfill material in a way that it generates
140±2 (one hundred forty plus minus two) mm depth and it has 610±2x610±2 (six hundred ten plus
minus two multiply six hundred ten plus minus two) mm surface area.
5.3.6.4.5.5 Five drop tests will be made in this way.
5.3.6.4.5.6 Distances between indent centers which were occurred after every drop test will be at
least 152 (one hundred fifty two) mm and distance from edges will be at least 76 (seventy six) mm.
5.3.6.4.5.7 Depth of the indents occurred onto backfill material’s surface after the test, will be
measured by caliper.
5.3.6.4.5.8 Arithmetic mean of the indent depths measured in drop test will be 19±2 (nineteen
plus minus two) mm.
5.3.6.4.5.9 All of the mark depths measured in drop test will be 16-22 (sixteen dash twenty two)
mm.
5.3.6.5
Matters related performing of ballistic test will be as expressed below.
5.3.6.5.1
Ballistic tests will be performed at 21±3 (twenty one plus minus three) ºC.
5.3.6.5.2
Bullet types used in tests will be as stated below.
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JUNE 2012
5.3.6.5.2.1 NATO FMJ (Full Metal Jacketed) G3 rifle bullet with 7,62x51 (seven point sixty two
multiply fifty one) mm nominal caliber.
5.3.6.5.2.2 MSC (Mild Steel Core) AK47 rifle bullet with 7,62x39 (seven point sixty two multiply
thirty nine)mm nominal diameter.
5.3.6.5.3
Shoots will be made according to muzzle from a distance of 15±1 (fifteen plus minus
one) m.
5.3.6.5.4
Shoots will be performed in a way that muzzle and the surface of test plate generates
an angle of 90±1º (ninety plus minus one degree).
5.3.6.5.5
Measured velocity of the bullets used in test will be as stated below.
5.3.6.5.5.1 Measured velocity value in test performed with G3 rifle bullet will be 847±10 (eight
hundred forty seven plus minus ten) m/s.
5.3.6.5.5.2 Measured velocity value in test performed with AK47 rifle bullet will be 720±10 (seven
hundred twenty plus minus ten) m/s.
5.3.6.5.6
Every plates prepared will be subjected to tests.
5.3.6.5.7
Matters related to number of shoots performed on plates and impact points will be as
expressed below.
5.3.6.5.7.1 On every plate six points will be shot.
5.3.6.5.7.2 Distances of impact points to the edges of test plate will be at least 76 (seventy six)
mm.
5.3.6.5.7.3 Distance between the centers of impact points will be at least 51 (fifty one) mm.
5.3.6.5.8
Perforation and back face signature depth will be controlled as stated below.
5.3.6.5.8.1 After every shot test plate will be controlled against perforation.
5.3.6.5.8.2 Back face signature depth occurred on backfill material will be measured after every
shot by a caliper.
5.3.6.5.8.3 Sediments occurred on backfill material will be corrected after every 6 (six) shot
session.
5.3.7
Test Methods to be Carried Out for Shock Absorber Sponge
5.3.7.1
Density Determination: It will be made in accordance with January 2010 dated TS EN
ISO 845.
5.3.7.2
Tensile Strength Determination: It will be made in accordance with April 2009 dated
TS EN ISO 1978.
5.3.7.3
Determination of Elongation at Break: It will be made in accordance with April 2009
dated TS EN ISO 1978.
5.3.7.4
Compression Stress Determination
5.3.7.4.1
It will be performed at 23±1 (twenty three plus minus one) ºC.
5.3.7.4.2
Thickness of the plate will be measured.
5.3.7.4.3
Plate will be held for 22 (twenty two) hours under pressure which provides % 25
(twenty five percent) reduction in thickness.
5.3.7.4.4
24 (twenty four) hours later from decompression, by measuring thickness smashing
ratio will be calculated with the formula in February 2009 dated, TS EN ISO 1856.
6.
ANNEXES
6.1
Chart -1 : Fabric Defects.
6.2
Chart -2 :Amount Of Sample To Be Taken For Visual Inspection According To The
Size Of Batch And Failure Evaluation Criteria.
6.3
Chart -3 :Amount Of Sample To Be Taken For Fabric’s Laboratory Inspection.
7.
REFERENCES
7.1
The referred document that takes place in Technical Specification.
7.2
June 2001 dated Ballistic Resistance of Personal Body Armor NIJ Standard-0101.04
7.3
July 2008 dated Ballistic Resistance of Body Armor NIJ Standard-0101.06
7.4
March 2011 dated and 8ABMK-L-146 numbered “Closed Cell Polyethylene Floating
Plate” Technical Specification.
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ANNEX-L
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JUNE 2012
Chart – 1 Fabric Defects
CLASSIFICATION
Critical
Big
Small
DEFECT
Colour differences through
10 (ten) cm and less
the fabric and/or from side
to centre and/or from side
More than 10 (ten) cm
to side
The fabric has fringed edges
The fabric is dirty
The fabric reeks unpleasant smell
The edges are bended partially or completely
The fabric has hole, cut, lost and torn
The fabric has exterior fiber
X
X
X
X
X
X
X
X
Chart -2 Amount Of Sample To Be Taken For Eye And Measurement Inspection According
To The Size Of Batch And Failure Evaluation Criteria
Size of Batch
Submitted to
Inspection
(Meter)
1200 and less
1201-3200
3201-10000
10001-35000
35001-110000
110001-500000
500001 and more
Amount of
Sample to be
Taken for
Physical
Inspection
(Meter)
64
100
160
250
400
630
1000
Number of Acceptable Failures (At the most)
Critical
Big
Big + Small
0
0
0
1
1
2
3
2
4
6
10
14
20
28
10
14
20
28
42
60
84
Chart -3 Amount Of Sample To Be Taken For Fabric’s Laboratory Inspection
Amount of Sample to be Taken for Physical
Inspection (Meter)
100 and less
101-400
401 and more
L-6
Amount of Sample to be Taken for Laboratory
Inspection (Number) [2 (two) meters sample]
4
6
8
ANNEX-L
8ABMK-K-465
JUNE 2012
ISSUED OFFICE:
TECHNICAL SPECIFICATION PREPEARED BY
Recep ÖZGÜR
Mechanical Engineer
Manager of Production Etude
Section
Mert Onur YAVAŞ
First Lieutenant Engineer
Manager of Etude Project
Department
Soner MENDERES
Major Engineer
Director of Quality Management
INSPECTED
Aydın KARABEY
Lieutenant Colonel
Director of Technical and Project Management
Technical specification Preparation and
Inspection Specialist
Chemical Engineer C. BARUT
APPROVAL
26 JUNE 2012
M. Zekeriya KIRAY
Maintenance Colonel
Commander of 8th Main Maintenance Center
Ali KOÇER
Kur.Alb.
Pl. ve Koor.Ş.Md.
L-7