40Cr調質齒輪彎曲強度可靠性試驗研究

Reliability of Gear-Tooth Bending Fatigu Strength for Through Hardened and Tempered Steel 40Cr

摘要: 論述了40Cr鋼調質齒輪輪齒彎曲疲勞強度可靠性的試驗研究.試驗是在4個應力水平（每個應力水平的樣本不少于6個）上進行的.在試驗數據基礎上，擬合出R-S-N曲線及方程.最終獲得40Cr鋼調質齒輪輪齒在不同可靠度時的彎，彎曲疲勞強度值.

Abstract: The experimental investigation on the reliability of gear-tooth fatigue strength of hardened and tempered steet 40Cr is dealt with. Four loading stress levels (6 samples each) are conducted. Based on the test data, a R-S-N curve and the related equation were fitted. Finally the limiting bending fatigue strength of the 40Cr gear-tooth under different reliabilities are evaluated.