The characteristic material data obtained from these tests is used in simulation tools to reliably predict the long-term behavior of corresponding components under continuous mechanical and thermal load. The two machines can perform not only creep tests according to ISO 899-1, but also relaxation tests and tests with user-defined load profiles comprising several load sequences, and they can do so at temperatures of up to 200 °C. “These tests are part of our HiAnt customer services, and we conduct them in accordance with the needs of our development partners, but also for our own projects,” explains Dr. Marcel Brandt, technical head of the Material Testing Center.
Testing stations can be controlled individually
The two new testing machines cover a load range of up to 10 kN per sample. Each one is equipped with five test axes installed in a temperature-controlled chamber. The test axes can be controlled individually. “This way, we can perform five independent tests, such as creep and relaxation tests, right next to one another at identical temperatures, which saves space, money and time,” Brandt says. Elongation of the sample under load is measured optically (non-contact) by a high-resolution video extensometer mounted on each test axis.
Continuous expansion of the Material Testing Center
Lanxess has steadily expanded its fully climate-controlled Material Testing Center in recent years. For example, it now is equipped with modern, servo-hydraulic ZwickRoell testing machines for dynamic fatigue tests that help to characterize fatigue behavior, and for high-speed tensile tests to determine material data for crash simulation. The MTC further has testing machines for quasi-static tensile, flexural, shear and compression testing, also from ZwickRoell. They are designed for testing the entire product range of impact-modified, unreinforced material grades for blow molding applications, highly reinforced compounds, and continuous fiber-reinforced composites for use in highly stressed structural components. “Our services are part of the HiAnt package of services and know-how, which we established to provide customers with support through the entire process of developing a plastic component,” Brandt says.
Source image and text: Lanxess AG