Sports and Organization Rules of the International Judo Federation ...
Sports and Organization Rules of the International Judo Federation ...
Sports and Organization Rules of the International Judo Federation ...
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<strong>Sports</strong> <strong>and</strong> <strong>Organization</strong> <strong>Rules</strong> <strong>of</strong> <strong>the</strong> <strong>International</strong> <strong>Judo</strong> <strong>Federation</strong><br />
Used Equipment<br />
• A Vernier caliper to measure <strong>the</strong> thickness <strong>of</strong> <strong>the</strong> mat<br />
• A tape meter to measure, width <strong>and</strong> diagonals.<br />
• A digital scale to measure <strong>the</strong> mass <strong>of</strong> <strong>the</strong> mat.<br />
Measurements are made on 10 mats.<br />
Results given in Report<br />
Length (cm)<br />
Width (cm)<br />
Thickness (cm)<br />
Diagonal (cm)<br />
4) Determination <strong>of</strong> uniformity <strong>of</strong> tatamis<br />
Used Equipment <strong>and</strong> Conditions<br />
Fall height : 40 cm.<br />
Indentor diameter (mm): 78 mm.<br />
measured Value St<strong>and</strong>ard limits Difference Relative Difference<br />
Sample conform<br />
Sample not conform<br />
5) Determination <strong>of</strong> mechanical characteristics <strong>of</strong> tatamis:<br />
shock absorption<br />
Used Equipment <strong>and</strong> Conditions<br />
Fall height: 20 <strong>and</strong> 60 cm.<br />
Indentor diameter (mm): 43 <strong>and</strong> 116 mm.<br />
Indicated values in next table are maximum authorized<br />
ones for peak <strong>and</strong> deflection <strong>and</strong> minimum authorized one<br />
for resilience. Measurements must have precision less than<br />
+/- 2.<br />
Measurements are made on 10 mats.<br />
Results given in Report<br />
Indentor diameter (mm)<br />
Circumstances <strong>of</strong> tests<br />
43 116<br />
20 60 20 60<br />
Measured parameters<br />
Fall height (cm)<br />
Peak<br />
Normative Value 30 60 40 65<br />
(γ max) ≤<br />
Measured Value<br />
Deflection<br />
Normative Value 26 37 19 30<br />
(ε max) ≤<br />
Measured Value<br />
Resilience<br />
Normative Value 25 21 29 25<br />
(%) ≥<br />
Measured Value<br />
Sample conform<br />
Sample not conform<br />
REQUIREMENTS<br />
Minimum step <strong>of</strong> shock absorption variation: +/- 3 g compared to average value found.<br />
Measurements are made on 10 mats.<br />
6) Determination <strong>of</strong> <strong>the</strong> friction <strong>of</strong> tatamis.<br />
Used Equipment <strong>and</strong> Conditions<br />
• RRL Pendulum to measure <strong>the</strong> friction <strong>of</strong> <strong>the</strong> anti-slip<br />
• Ruler <strong>of</strong> <strong>Judo</strong> to adjust <strong>the</strong> pendulum RRL<br />
Results given in Report<br />
Test 1 Test 2 Test 3 Test 4 Test 5 Test 6 Test 7 Test 8<br />
Value<br />
Average<br />
Difference<br />
Sample conform<br />
Sample not conform<br />
- 136 -<br />
- 137 -
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