Table 2: Experimental conditions and results of group A∼D specimens.

Specimen numberTemperature, T (°C)Relative humidity, H (%RH)Stress level, SR=Pmax/PuLoading frequency, f (Hz)Fatigue lives, Nf/cycles

A123780.7010>2000000
A2>2000000
A3825899
A40.75293301
A5328359
A6349997
A7>2000000
A80.8024099
A935677
A1036071
B150800.6510>2000000
B21800031
B30.7063470
B4207900
B5157413
B60.7592486
B750936
C150900.6010>2000000
C21784833
C30.65166591
C4186596
C50.757940
C61960
D150950.6010>2000000
D2>2000000
D30.6422236
D462746
D50.6821355
D63647
D715173