Table 1 Static load tensile and impact strength test results of drip irrigation belt samples.
Results | New drip irrigation belt samples | Group 1 of old drip irrigation belt samples | Group 2 of old drip irrigation belt samples | Group 3 of old drip irrigation belt samples | ||||
|---|---|---|---|---|---|---|---|---|
Elongation (%) | Impact strength (MPa) | Elongation (%) | Impact strength (MPa) | Elongation (%) | Impact strength (MPa) | Elongation (%) | Impact strength (MPa) | |
Test 1 | 2.0 | 14.2 | 3.3 | 11.4 | 3.7 | 10.9 | 4.2 | 10.2 |
Test 2 | 2.2 | 14.1 | 3.1 | 11.8 | 3.5 | 10.6 | 4.0 | 9.3 |
Test 3 | 2.0 | 13.4 | 3.3 | 11.3 | 3.9 | 10.3 | 3.9 | 9.6 |
Test 4 | 2.1 | 13.6 | 3.0 | 10.9 | 3.6 | 10.5 | 4.1 | 8.9 |
Test 5 | 2.2 | 13.9 | 3.2 | 10.7 | 3.8 | 9.9 | 4.3 | 8.7 |
Average value | 2.1 | 13.8 | 3.2 | 11.2 | 3.7 | 10.4 | 4.1 | 9.3 |
Standard deviation | 0.08 | 0.30 | 0.12 | 0.38 | 0.14 | 0.33 | 0.14 | 0.53 |
