Abstract Fatigue life of plate and shell heat exchangers has been determined by experiments. Tests occurred with the aid of a pneumatic-hydraulic setup in which plate pack samples were internally pressurized by water. The samples were exposed to cyclic pressure loads varying from ambient to service pressure in the range 1.0–1.4 MPa, typical operating pressure range of crude oil production sites. Stress determination was possible due to strain gauge measurements. A heterogeneous stress field occurs along the corrugated plate due to its complex geometry. The external welded region is the preferential failure location. An average stress-life curve has been provided with 50% failure probability in accordance to ISO-12107. Fatigue strength reduction factors at the critical welded locations were determined via elastic stress analysis as proposed by ASME procedure. PSHE useful life increases with decreasing spacing between plates.

中文翻译：

---

板壳式换热器疲劳性能评价

摘要 通过实验确定了板壳式换热器的疲劳寿命。测试是在气动液压装置的帮助下进行的，其中板组样品通过水在内部加压。样品承受从环境压力到工作压力范围为 1.0-1.4 MPa（原油生产现场的典型工作压力范围）的循环压力负载。由于应变仪测量，应力测定是可能的。由于其复杂的几何形状，沿波纹板出现异质应力场。外部焊接区域是优先失效位置。已根据 ISO-12107 提供了具有 50% 失效概率的平均应力-寿命曲线。关键焊接位置的疲劳强度折减系数是通过 ASME 程序提出的弹性应力分析确定的。PSHE 使用寿命随着板间距的减小而增加。