Barely Significant

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In addition, the characteristics of B x signals, the mean value, and the peak value of the average of B x had an extremely significant linear relationship with the applied fatigue stress during the stable stage of the fatigue test, which indicates that MMMT is a feasible method for fatigue stress evaluation and even residual fatigue life estimation for weldments in service. welded joint tension-compression fatigue test metal magne
highly significantqualifiedgold
The statistical regression prediction models were established as follows. (9) M T D = 4.1531 A I a − 0.1121 T F a − 3.6846 R 2 = 0.89 (10) M P D = 6.7514 A I a + 0.4139 T F a − 6.4471 R 2 = 0.93 (11) W F C = 0.1001 A I a + 0.0453 T F a + 0.6405 R 2 = 0.69 The three regression models above were tested by the F-tests and were highly significant statistically at a significance level of 95%.
It was also found from simulation that with an increase in ball impact angle, the maximum residual compressive stress, the depth of maximum residual compressive stress and the depth of the residual compressive stress layer were significantly improved; an exception was the surface residual compressive stress, which showed a decreasing trend.