標準編號:	TB/T 1354-1979
中文名稱:	鋼軌實物彎曲疲勞試驗方法
中標分類:	S10    鐵路建筑設備綜合
行業分類:	TB    鐵路運輸行業標準
發布機構:	中國人民共和國鐵道部
發布日期:	1980-04-01
實施日期:	1980-4-1
標準狀態:	superseded
被新標準替代:	TB/T 2344.1-2020 鋼軌 第1部分：43kg/m～75kg/m鋼軌
被替代日期:	2021-7-1
翻譯語言:	英文
文件格式:	PDF
中文字符數:	4000 字
翻譯價格(元):	240.0
交付時間:	付款后 1 個工作日

I. General 1. The bending fatigue test for the rail is conducted to obtain the fatigue curve and fatigue limit of the rail under alternating stress. 2. During the test, the rail is simply supported on two bearings with a support span of 1,000mm, its rail head being upward, and its concentrated load applied to the midpoint of the span. 3. The radius of the indenter running surface curve applied with load is 420±5mm, and the width of the running surface (perpendicular to the rail length) shall be greater than that of the rail head. The indenter hardness is HRC 50~60, and the surface finish is not less than 4. 4. The rail stress may be calculated according to the following Equation: