“PHYBAL” a Short‐Time Procedure for a Reliable Fatigue Life Calculation
“PHYBAL” a Short‐Time Procedure for a Reliable Fatigue Life Calculation
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“PHYBAL”用于可靠疲劳寿命计算的短时程序
DOI：
10.1002/adem.200900344
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发表时间：
2010
影响因子：
3.6
通讯作者：
D. Eifler
中科院分区：
文献类型：
--
作者：
P. Starke;F. Walther;D. Eifler
高强度钢和构件疲劳寿命的可靠计算需要系统地研究循环变形行为并全面评估进行中的疲劳损伤。除了机械应力应变滞后测量外，还使用温度和电阻测量来详细表征SAE 4140钢在一种淬火和回火、一种正火、一种贝氏体和一种马氏体条件下的疲劳行为。为了保证最佳的操作条件下，新的疲劳寿命计算方法“PHYBAL”的基础上，广义Morrow和Basquin方程的开发。这是一个短时间的过程，只需要三个疲劳试验的数据，就可以快速而精确地确定S-N（Woehler）曲线。因此，与传统的测试方法相比，“PHYBAL”提供了显著减少实验时间和成本的机会。
The reliable calculation of the fatigue life of high‐strength steels and components requires the systematic investigation of the cyclic deformation behaviour and the comprehensive evaluation of proceeding fatigue damage. Besides mechanical stress‐strain hysteresis measurements, temperature and electrical resistance measurements were used for the detailed characterisation of the fatigue behaviour of the steel SAE 4140 in one quenched and tempered, one normalised, one bainitic and one martensitic condition. To guarantee optimal operation conditions the new fatigue life calculation method “PHYBAL” on the basis of generalised Morrow and Basquin equations was developed. It is a short‐time procedure which requires the data of only three fatigue tests for a rapid and nevertheless precise determination of S‐N (Woehler) curves. Consequently, “PHYBAL” provides the opportunity to reduce significantly experimental time and costs compared to conventional test methods.