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本文作者定量分析某型舰用主锅炉汽水联箱的疲劳寿命；并根据汽水联箱的运行情况制定其载荷谱，按联箱的载荷谱计算其应力与应变，然后用局部应力应变法和疲劳循环计数的雨流法，计算汽水联箱的裂纹起始寿命；用断裂力学方法计算汽水联箱的裂纹扩展寿命。作者在此基础上还对汽水联箱的安全性进行了评定。图３表１参４。
The authors quantitatively analyze the fatigue life of a steam-water header for a ship-type main boiler. Based on the operation of the steam-water header, the author formulates the load spectrum, calculates the stress and strain according to the load spectrum of the header, and then uses local stress-strain method and fatigue The cyclic rain counting method was used to calculate the crack initiation life of the steam-water header. The crack propagation life of the steam-water header was calculated by the fracture mechanics method. Based on this, the author also evaluated the safety of the steam / water header. Figure 3 Table 1 reference 4.