Everything You Need to Know About Servo Hydraulic Fatigue Testing Machine

A Servo Hydraulic Fatigue Testing Machine is an invaluable tool for testing the fatigue strength of materials under simulated utilization parameters. It is a versatile, powerful tool that helps simulate the real-world application of metalworking and metal forming operations such as welding, cutting, and grinding operations. Servo hydraulic fatigue testing machines employ the use of a motor-driven hydraulic drive system to produce high-cycle sets of test results for a wide array of materials.

Servo hydraulic fatigue testing machines use a high-pressure hydraulic pump to develop a predetermined work pressure under a given load. The work pressure is then increased or alternatively reduced, as the test proceeds. The pressure level, as well as the active cycles, can be adjusted to create a range of different tests, allowing for the study of both high and low cycle strength, as well as fatigue strength. The machine can also be configured to dynamically adjust the load cycle rate, allowing for correlation between static and dynamic test methods.

The primary benefit of this testing machine is the ability to accurately replicate real-life applications, creating an environment in which the mechanical properties of materials can be accurately studied and tested. In addition, it is capable of controlling multiple variables such as temperature, creep, surface roughness, and interfacial contact conditions, allowing for even more detailed and accurate tests, which can provide valuable insights into the properties of metals, polymers, composites, and alloys.

When performing tests on materials with a servo hydraulic fatigue testing machine, it is important to ensure proper setup and calibration. The system should also be adjusted to compensate for changes in ambient temperature, air density and pressure, and other environmental conditions, in order to ensure accurate results. The correct testing parameters should be decided based on the material and application, however, many machines offer detailed documentation to assist in such decisions.

How to operate servo-hydraulic fatigue testing machine

How to operate servo-hydraulic fatigue testing machine

Servo-hydraulic fatigue testing machines are sophisticated pieces of testing equipment used to simulate the loads and stresses placed on real-world components during operation. For example, fatigue testing machines are often used to measure the strength and durability of engine parts, structural components, and other materials or products before they are used in the field.

The first step in operating a servo-hydraulic fatigue testing machine is to ensure that the machine is powered on and has sufficient hydraulic pressure. These systems generally require access to an external hydraulic source, such as an oil pump, to provide the necessary pressure for the test. Once the system is set up and properly pressurized, the required test parameters should be set. These parameters typically include the maximum load that is to be applied to the sample, the desired number of test cycles, and any other parameters set by the user.

Once the test parameters are set, the servo-hydraulic testing machine‘s load system should be calibrated. This is generally done by applying a known load to the system while measuring the output of the system in terms of force, deflection, or other units that are being tested. Once the system is properly calibrated, the user can connect their sample to the test frame and secure it into place. The sample should be positioned in such a way that it is exposed to the maximum load that will be applied during the test.

The next step involves engaging the fatigue testing machine and initiating the test. The test begins with a low-load cycle and then sequentially increases the load during successive cycles. The system should be monitored closely as the desired number of cycles is met. If a sample does not fail at the predetermined load level, the test cycle should be repeated until the sample does fail.

Once the sample fails, the test cycle should be stopped and the servo-hydraulic testing machine should be shut down. The machine should then be cleaned and the sample removed from the test frame. The sample should be inspected for any signs of damage that may have occurred during testing. Finally, all data from the test should be recorded and stored.


Servo-hydraulic fatigue testing machines are a versatile tools for testing the strength of various materials under simulated load and usage. They provide detailed test data with which materials can be compared, as well as information that can be used to optimize and improve the design of components. As such, they have become one of the most popular and useful tools in mechanical engineering.

Overall, operating a servo-hydraulic fatigue testing machine requires attention to detail, and a thorough understanding of the system and its parameters. Following the steps outlined above can help ensure that the machine is operated safely and securely and that all test results are accurately recorded and stored.