On the Characteristics of Fatigue Fracture with Rapid Frequency Change

被引：13

作者：

Amooie, Mohammad A. ^{[1
]}

Lijesh, K. P. ^{[1
]}

Mahmoudi, Ali ^{[1
]}

Azizian-Farsani, Elaheh ^{[1
]}

Khonsari, Michael M. ^{[1
]}

机构：

[1] Louisiana State Univ, Dept Mech & Ind Engn, Baton Rouge, LA 70803 USA

来源：

ENTROPY | 2023年 / 25卷 / 06期

关键词：

fracture fatigue entropy (FFE); frequency dependence; internal friction; unstable working conditions; fatigue life; CAST-ALUMINUM ALLOY; LIFE PREDICTION; BEHAVIOR; ENTROPY; STEEL; TEMPERATURE; STRENGTH; ENVIRONMENT; ENERGY;

D O I：

10.3390/e25060840

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of sudden variations in working modes and fatigue behavior of CS 1018 is studied. A general model based on the framework of the fracture fatigue entropy (FFE) concept is developed to capture such changes. Fully reversed bending tests are performed on flat dog bone specimens with a series of variable frequency tests without turning the machine off to simulate fluctuating working conditions. The results are then post-processed and analyzed to assess how fatigue life changes when a component is subjected to sudden changes in multiple frequencies. It is demonstrated that regardless of the frequency changes, FFE remains constant and stays within a narrow band range, similar to that of a constant frequency.

引用

页数：16

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