GUNT Moving components and machine parts are often exposed to periodically fluctuating loads. Even if the dynamic load is far below the static load capacity, this load can lead to fracture of the component after a long time because of material fatigue. The fatigue strength and design strength of components are determined in fatigue strength tests or endurance tests.
Product Features
- The trainer demonstrates the basic principles of fatigue strength testing and the creation of a Wöhler diagram.
- The clean layout and simple operation allow the experimental sequence to be observed in all details and phases.
- A cantilever-mounted and rotating cylindrical specimen is subjected to a single force corresponding to a cantilever bending beam.
- The specimen is subjected to pure reverse bending stress and breaks after a certain number of load cycles due to material fatigue.
- The load is generated via a spring balance and a floating bearing.
- The load amplitude can be continuously adjusted using a threaded spindle.
- An electronic counter registers and digitally displays the number of load cycles.
- The counter is triggered by an inductive proximity switch on the motor coupling and can also measure speed.
- The electric motor stops automatically when the specimen breaks, triggered by a stop switch.
- A protective cover guards against flying fragments.
- Specimens with various fillet radii are included to demonstrate the notching effect and surface influence.
- Optional data acquisition system transfers measured values to a PC for software analysis.
Benefits
- Provides a clear and hands-on demonstration of fatigue strength principles and failure.
- Allows precise adjustment and measurement of load amplitude and cycle counts.
- Includes safety features such as automatic motor stop and protective cover.
- Incorporates specimen variety to study effects of geometry and surface finish.
- Facilitates advanced analysis through optional data acquisition and software tools.
Why Choose the GUNT Fatigue Tester?
This trainer is ideal for educators and engineers aiming to thoroughly understand and demonstrate material fatigue and endurance. Its robust construction, safety features, and comprehensive data capabilities make it an essential tool for material testing laboratories and quality control.
