BS 6366:2011 pdf download
BS 6366:2011 pdf download.Specification for studs for rug by football boots.
Annex A Method of test for risk of causing injury by (normative) glancing or raking (abrasion and cutting)
A.1 Principle
The test assesses the risk that a stud might cause injury due to a glancing/raking action. A test material is subjected to a glancing swing from a stud mounted on a pendulum. Any damage to the test material Is noted and compared with the performance of the Comparator stud.
A.2 Apparatus
A2.1 A pendulum type skid testeç such as a tyre skid tester, with the following features:
a) a graduated scale to determine swing through the test stud;
b) a spring loaded mechanism to achieve the correct swing distance;
c) a height adjustment system to allow stud swing length to be set to the correct length.
A 2.2 One test stud (new), of each stud length.
A 2.3 A comparator stud (conforming to 4.3).
A.2,4 A flat surface, on which to stand the skid tester (A.2.1).
A 2.5 Test material, constituting either two gelatine slabs, conforming to F.3, or a composite of synthetic chamois (F.1) on top of Foam A (F2.1) mounted together securely on the flat surface,
NOTE Double.sided tape has been shown to be a suitable adhesive to secure the test material to the flat surface or the composite parts at the edges to restrict movement on impact.
A.2.6 A means of attaching the studs (representative of how they are to be used i.e. with a boot), with a part of the sole with mounting fixture, to the underside of the pendulum.
NOTE This can be done with smell screws or bolts that do not interfere with the swing. Other means of attachment can be used dependent on the equipment being used.
A 2.7 A device that can be attached to the underside of the pendulum, to simulate the stud being swung in the opposite direction, see Figure Al a) and b).
A.3 Conditioning
Condition the studs, all test materials and apparatus for at least 48 h in an atmosphere having a temperature of (20 ±5) C and a relative humidity of (65 i25)%.
A.4 Procedure A4.1 Calibration
A.4,1.1 Set up the skid tester on the level surface.
A.4.1.2 Attach a stud to the underside of the pendulum.
A.4.1.3 Perform a swing test without the test material underneath. If scale reading is not zero, adjust.
A.4.1.4 Repeat this calibration procedure for each stud just prior to testing.
8.1 Principle
The test assesses the risk that a stud might cause injury due to a stamping action. A test material is subjected to an impact from a stud mounted on a drop weight. The severity of the impact (see 8.4.1) and any indication of additional damage (see 8.4.2) is noted and compared with the performance of the comparator stud.
8.2 Apparatus
8.2.1 A dropping apparatus, such that a mass can be released in order to drop along a guided vertical path onto the test material placed on a flat anvil (see Figure 8.1), conforming to the following criteria with a:
a) total mass of (8.5 ±0.1) kg, which consists of six 1 kg masses (that can be removed individually) and a linear bearing;
b) mass raised to a height of 50 mm above the simulated skin surface;
c) securely screw the stud onto the striking face of the drop weight with a torque of 1.5 Nm or it the stud has another fixing mechanism, fix the stud onto the striking face according to the manufacturer’s instructions;
d) device to measure the maximum (dynamic) and final (static) penetration;
e) device to measure the deceleration of the stud within the test material;
f) chart recorder to display the penetration and deceleration values.
8.2.2 An anvil, flat surface rigidly attached to a mass of at least 100 kg.
8.2.3 One test stud (new), of each stud length.
NOTE The rest can also be carried out in pairs of studs, such as a heel pair or a toe pair These should be rested against equivalent pairs of comparator studs to give meaningful results. Pairs of studs do not penetrate as deeply into the test foam or test material as single studs do, but multiple stud penetration is more likely to happen in play.
8.2.4 A comparator stud (as defined by 4.3).
8.2.5 A test material, consisting of either a composite of synthetic chamois (F.1) on top of Foam A (F.2.1), or a single layer of Foam B (F.2.2) with no synthetic chamois top layeç used for stud penetration in B.4.1.
8.2.6 A test material, consisting of either a composite of synthetic chamois (F.1) on top of two gelatine slabs, conforming to F.3, or a composite of synthetic chamois (F.1) on top of Foam A (Eli), mounted together securely on the flat surface, used for damage caused by stamping In 8.4.2.
