Load change test and endurance test of metal springs

Metal springs are essential components in many industrial applications and often have to withstand extreme loads. To ensure their performance and service life, load cycle tests and endurance tests are used. These test procedures are used to analyze the behavior of metal springs under repeated stress, identify possible weak points and optimize the design.

The purpose of the load cycle and endurance test:

The load cycle test aims to examine the behavior of a metal spring under repeated load changes. The spring is subjected to a defined number of load changes to determine its strength, fatigue properties and service life. The endurance test, on the other hand, simulates long-term stress over a longer period of time in order to evaluate the behavior of the spring under real operating conditions.

Advantages of load cycle and endurance tests:

Reliable assessment of service life:
These tests can identify potential weaknesses in a metal spring that could lead to premature failure. This allows preventive measures to be taken to increase the service life of the spring.
Construction optimization:
The knowledge gained from the tests enables engineers to optimize the design and the choice of materials, to ensure better spring performance and reliability.
Safety and Quality:
The tests also serve to ensure the safety and quality of the metal springs as they ensure that they meet the requirements and standards of the respective industry.

Disadvantages of load cycle and endurance tests:

Time and cost intensive:
These tests require a longer test duration to obtain meaningful results. In addition, special test machines and facilities are required, which can result in additional costs.
Complexity of implementation:
Conducting these tests requires in-depth knowledge and experience to obtain accurate and reliable results.

Performing the load cycle and endurance tests:

Selection of the test machine:
Depending on the requirements and the type of metal spring, a suitable testing machine will be selected, which is capable of to simulate the required load changes or long-term stress.
Pen preparation:
The metal spring to be tested is prepared appropriately to ensure that it is correctly clamped in the testing machine and that the desired loads can be applied.
Determination of test parameters:
The test parameters such as the number of load changes, the load amplitude, the frequency and the ambient temperature are set according to the requirements.
Performing the test:
The load change test or the endurance test is carried out according to the specified parameters. Load-deformation response data is collected periodically during the test.
Evaluation of the results:
The data obtained is analyzed and evaluated to determine the fatigue strength, service life and other relevant parameters of the metal spring.
Construction optimization:
Based on the test results, optimization measures such as material changes, design adjustments or surface treatments can be made to improve the performance and lifespan of the spring.

Results of load cycle and endurance tests:
The results of these tests provide important information about the fatigue behavior of the metal springs. Fatigue limits, fatigue strength and possible fatigue cracking are identified. Based on these results, engineers can evaluate the safety and reliability of the metal springs and take appropriate measures to avoid potential failures.

The load cycle and endurance tests are important tools to evaluate the performance, life and reliability of metal springs. With qualified technical advice and the correct execution of these tests, weak points can be identified and optimization measures can be taken to improve the quality and safety of the metal springs. Contact us for comprehensive advice and support in the manufacture of special metal springs.

Reiner Schmid Produktions GmbH have automatic load change and endurance test machines to carry out endurance tests on torsion springs, tension springs and compression springs.
We determine the service life of metal springs in the intended built-in parts and verify the service life based on the required number of load cycles.

Load change and endurance tests provide the greatest possible security, so that components will function without problems after many years. Load change and endurance tests are an indispensable element in quality assurance.

Load change and endurance test