Strona 2_redak - Instytut Agrofizyki im. Bohdana Dobrzańskiego ...

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Table 16.15. Mean values (±St. Dev.) of the friction coefficient µ of selected seeds against stainless
steel, galvanized steel and concrete B30 determined at the normal pressure of 20-60 kPa
Material,
moisture
content (%)
Amaranth
Rawa
8
White mustard
Borowska
9
Pea
Piast
10
Buckwheat
Kora
10
Lentils
Tina
8
Soybeans
Aldana
8
Normal
Coefficient of wall friction µ
stress
(kPa) Stainless steel Galvanized steel Concrete B30
20
30
40
50
60
20
30
40
50
60
20
30
40
50
60
20
30
40
50
60
20
30
40
50
60
20
30
40
50
60
0.119 ± 0.004
0.115 ± 0.001
0.111 ± 0.001
0.107 ± 0.001
0.108 ± 0.003
0.134 ± 0.003
0.128 ± 0.009
0.132 ± 0.008
0.125 ± 0.008
0.123 ± 0.009
0.146 ± 0.013
0.135 ± 0.007
0.147 ± 0.016
0.153 ± 0.015
0.136 ± 0.009
0.156 ± 0.009
0.154 ± 0.002
0.158 ± 0.003
0.157 ± 0.001
0.161 ± 0.005
0.160 ± 0.015
0.160 ± 0.013
0.141 ± 0.012
0.140 ± 0.005
0.135 ± 0.005
0.147 ± 0.003
0.169 ± 0.010
0.175 ± 0.002
0.170 ± 0.023
0.169 ± 0.017
0.136 ± 0.007
0.125 ± 0.007
0.128 ± 0.010
0.120 ± 0.005
0.109 ± 0.002
0.108 ± 0.004
0.100 ± 0.002
0.098 ± 0.006
0.097 ± 0.002
0.097 ± 0.003
0.138 ± 0.023
0.121 ± 0.003
0.120 ± 0.006
0.123 ± 0.013
0.123 ± 0.006
0.177 ± 0.002
0.150 ± 0.004
0.150 ± 0.003
0.149 ± 0.004
0.149 ± 0.002
0.160 ± 0.007
0.142 ± 0.012
0.142 ± 0.010
0.131 ± 0.003
0.136 ± 0.007
0.165 ± 0.024
0.202 ± 0.008
0.178 ± 0.011
0.162 ± 0.010
0.198 ± 0.019
0.378 ± 0.001
0.370 ± 0.006
0.378 ± 0.009
0.371 ± 0.008
0.372 ± 0.003
0.352 ± 0.008
0.353 ± 0.007
0.354 ± 0.012
0.340 ± 0.007
0.315 ± 0.012
0.292 ± 0.006
0.318 ± 0.001
0.323 ± 0.005
0.331 ±0.006
0.337 ± 0.002
0.379 ± 0.011
0.385 ± 0.011
0.372 ± 0.006
0.369 ±0.006
0.371 ± 0.008
0.258 ± 0.014
0.267 ± 0.012
0.263 ± 0.005
0.259 ± 0.002
0.263 ± 0.006
0.405 ± 0.012
0.413 ± 0.014
0.412 ± 0.012
0.424 ± 0.010
0.434 ± 0.011