International Scholarly Research Notices / 2014 / Article / Tab 8

Research Article

Effect of Assembly Stresses on Fatigue Life of Symmetrical 65Si7 Leaf Springs

Table 8

Experimental fatigue life of the specimens under different stress ranges.

Material processingStandard specifiedAlternating stress level (MPa)Stress rangeFatigue life of -1
( )
Fatigue life of -2
( )
Fatigue life of -3
( )
Fatigue life of -4
( )
Average SD

Normal rolling, quenching at 880°C, tempering at 410°C for 90 mins, shot peening at 18 A intensity, BHN 380–432, and scragging at 0.9% of yield stress0.6 g–2 g
(As specified)
269–89662784212819618222685656Avg. 83513
SD 1518

Normal rolling, quenching at 880°C, tempering at 410°C for 90 mins, shot peening at 18 A intensity, BHN 380–432, and scragging at 0.9% of yield stress(Without )218–96975166796693207011969956Avg. 69047
SD 1333

Normal rolling, quenching at 880°C, tempering at 410°C for 90 mins, shot peening at 18 A intensity, BHN 380–432, and scragging at 0.9% of yield stress(With )200–88568574827766587901077229Avg. 76931
SD 1492

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