测点编号 时域指标 | 测点1 | 测点2 | 测点3 | 测点4 | 测点5 | 测点6 | 测点7 | 测点8 | ||
能量特性指标 | 均方值(mm2∙s−4) | 加固前 | 2.049 | 7.204 | 1.88 | 3.226 | 1.24 | 5.895 | 1.225 | 6.954 |
加固后 | 1.38 | 6.636 | 1.77 | 1.581 | 0.997 | 5.139 | 1.178 | 2.093 | ||
方差(mm2∙s−4) | 加固前 | 2.049 | 6.22 | 1.879 | 1.947 | 1.234 | 7.196 | 1.681 | 5.313 | |
加固后 | 0.651 | 5.676 | 1.752 | 0.723 | 0.995 | 7.092 | 1.396 | 1.864 | ||
均方根值(mm∙s−2) | 加固前 | 1.431 | 2.684 | 1.371 | 1.796 | 1.116 | 2.684 | 1.297 | 2.655 | |
加固后 | 0.78 | 2.595 | 0.921 | 1.417 | 1.016 | 2.469 | 1.207 | 1.428 | ||
冲击特性指标 | 脉冲因数 | 加固前 | 19.434 | 15.876 | 17.79 | 14.2 | 13.343 | 18.334 | 19.241 | 15.015 |
加固后 | 17.786 | 14.4 | 15.43 | 10.423 | 12.419 | 15.134 | 11.123 | 11.825 | ||
峰值因数 | 加固前 | 14.165 | 12.015 | 13.396 | 10.764 | 10.126 | 13.248 | 10.079 | 10.974 | |
加固后 | 11.685 | 10.197 | 9.126 | 7.824 | 9.043 | 11.007 | 8.218 | 8.956 | ||
裕度因数 | 加固前 | 23.841 | 19.168 | 21.914 | 17.155 | 16.072 | 22.413 | 12.268 | 20.786 | |
加固后 | 22.461 | 17.823 | 18.371 | 12.583 | 15.245 | 18.55 | 10.276 | 14.223 | ||
分布特性指标 | 峭度 | 加固前 | 7.333 | 5.582 | 7.645 | 4.988 | 5.414 | 10.661 | 5.154 | 9.296 |
加固后 | 6.411 | 3.704 | 3.252 | 4.234 | 3.231 | 9.435 | 4.994 | 5.844 | ||
偏度指标 (mm3∙s−6) | 加固前 | 0.119 | 1.081 | 0.301 | −0.97 | 0.661 | 0.842 | −0.05 | −1.261 | |
加固后 | 0.113 | −0.26 | 0.107 | −0.862 | 0.236 | 0.554 | 0.018 | 0.844 | ||
偏态因数 | 加固前 | 0.026 | 0.14 | 0.209 | −0.063 | −0.045 | −0.034 | −0.085 | −0.069 | |
加固后 | −0.013 | −0.064 | 0.177 | 0.03 | −0.038 | 0.029 | −0.016 | 0.016 |