Table 4 Comparison of different methods.
Sample | Before aging | After aging | Standard requirement | Ranking | Initial energy method | Ranking | Improved energy method | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Low-temperature tensile performance | Cycle 1 Before aging | Cycle 3 Before aging | Cycle 1 After aging | Cycle 3 After aging | Before aging | Ranking | After aging | Ranking | Low-temperature water Immersion | Ranking | Freeze–thaw cycle | Ranking | |||||
A | Pass | Pass | 150%, 3 cycles, passed | None | 3826.6 | 3630.4 | 2085.2 | 1863.6 | None | 11,247.2 | 2 | 3456.8 | 3 | 3365.2 | 4 | 2216.86 | 5 |
B | Pass | Pass | 3386.8 | 2665.3 | 1719.1 | 1409.1 | 6080.8 | 5 | 5698 | 2 | 8225.6 | 3 | 1924.33 | 7 | |||
C | Pass | Pass | 7129.2 | 3531.6 | 1524.8 | 1427.49 | 11,412 | 1 | 5787.2 | 1 | 10,395.6 | 2 | 3580.8 | 3 | |||
D | Pass | Pass | 3895.2 | 2448.4 | 1431.04 | 1293.2 | 6312.4 | 4 | 2398.84 | 6 | 10,854.4 | 1 | 2325.012 | 4 | |||
E | Pass | Pass | 100%, 3 cycles, passed | 1196.8 | 1069.2 | 1048 | 984 | 9688.8 | 3 | 3130.8 | 5 | 3228 | 7 | 3682.8 | 2 | ||
F | Pass | Pass | 798.8 | 711.2 | 642.4 | 559.6 | 3150 | 7 | 1629.39 | 8 | 3287.6 | 5 | 1780.759 | 8 | |||
G | Pass | Pass | 1669.2 | 1508.4 | 1416 | 927.2 | 3573.2 | 6 | 3357.2 | 4 | 2444.548 | 8 | 3871.2 | 1 | |||
H | Pass | Pass | 1497.2 | 1024.4 | 1138.44 | 989.32 | 2061.2 | 8 | 2044.1 | 7 | 3249.24 | 6 | 2043.54 | 6 | |||
