Linear testing machines
Durability tests on composite materials
ZwickRoell's LTM series linear testing machines are made for fatigue tests on composite materials.
Wherever maximum performance with minimum weight is required, engineers try to replace classic components made of steel, aluminum or titanium with composite constructions. Especially in the high-performance sector, vehicles and aircraft benefit greatly from weight reduction. The lighter they are, the less energy they need, which is reflected in a greater range or top speed.
As a group of materials, however, composites are very heterogeneous and not nearly as well characterized as steel or aluminium, for example.
ZwickRoell 's LTM series linear testing machines are suitable for fatigue tests on composite materials and, thanks to their design, can also be used for quasi-static tests. Available for test loads of up to 10 kN, LTM testing machines can generate frequencies of up to 100 Hz. Thanks to the oil-free, purely electrically operated drive and air cooling, they are economical to operate and require neither hydraulic nor compressed air lines in the test laboratory. ZwickRoell's electrodynamic linear motor testing machines also feature a patented actuator with a hollow actuator. It provides space for the displacement measuring system and allows the displacement transducer to be installed directly on the force axis and in the immediate vicinity of the specimen. This arrangement offers high repeatability of the test points and at the same time extremely precise displacement measurements of the actuator test piston in the range of +/-2 µm. The short distance to the specimen reduces thermal influences during the test to a minimum.
The options include a temperature chamber for tests at temperatures from -80 to +250 °C in order to test components under realistic operating conditions. It is also possible to order the testing machine with a higher test area for larger workpieces and to increase the seismic mass to improve performance with stiff specimens and high test frequencies. The testXpert R testing software not only includes test programs and correction factors, it also allows freely defined test procedures and the creation of your own test programs.
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