Improvement of Test Control of Fatigue Testing Machine Subject to Horizontal Load using a Gas Bearing

User Benefits

- Improvement of test control when the testing machine is subject to horizontal load. - Tests according to the ASTM F384 standard can be performed with accurate control.

Introduction

In fatigue testing, samples are cyclically loaded with different patterns, directions, frequencies, and magnitudes to simulate the in-use conditions of mechanical components. In some cases, a load perpendicular to the actuator’s movement direction (horizontal force) is applied, depending on the test. In such conditions, frictional forces occur in the actuator's internal bearing, and achieving smooth test control becomes difficult. A newly developed gas bearing has been employed instead of the traditional standard bearing, resulting in smoother test control. In this article, an electromagnetic fatigue testing machine was loaded with a horizontal load, and the output waves obtained using a standard bearing and a gas bearing were compared to evaluate the control accuracy.

April 5, 2022 GMT