Fatigue Test on Fasteners using a ZwickRoell Vibrophore

Fasteners are subjected to cyclic loading and therefore they are under strict control and have to be tested regularly. The resonance based Vibrophore is a ideal system with a high specimen throughput. As it requires minimal power and is an almost maintanance free system.
► The resonance testing system for static and dynamic tests ◄
The operating principle of a resonance testing system is based on the concept of a mechanical resonator with electromagnetic drive. The dynamic load is generated by an oscillation system that works when the system operates at full resonance. The mean force is applied by moving the upper crosshead with the lead screw drive.
Due to their design, resonance testing systems and resonance testing machines have in the past been used exclusively as dynamic materials testing machines for determining the fatigue life of materials and components with regard to finite life fatigue and long life fatigue. This includes, for example high cycle fatigue testing to DIN 50100 (S-N curve), in the tensile, compression, pulsating load and alternating load ranges.
The latest generation of Vibrophores (high-frequency pulsators) from ZwickRoell can be used as both dynamic and static materials testing machines - a first for this type of machine - with test loads up to 1,000 kN.
Typical applications for resonance testing systems are material fatigue tests and durability tests on standardized specimens and components (for example, piston rods, crankshafts, and screws), and production and quality control of components exposed to dynamic loads during their service life, such as concrete and reinforcing steel, as well as quasi-static tensile and compression tests and fracture mechanics tests on CT and SEB specimens.
► Advantages & Features ◄
♦ Optimal conditions with regard to exact alignment of test axes thanks to the stiff
four-column load frame
- Prevention of mechanical influences on the specimen
- Precise measurement results
♦ Reliable testing of both short and long specimens, made possible by the large crosshead travel
♦ Ergonomic operation thanks to low mounting table
♦ Repeatable and precise specimen change for defined grip-to-grip separation due to the integrated crosshead travel measuring system
♦ Minimal maintenance costs due to the absence of wear parts
♦ Easy installation without the need for additional infrastructure (e.g. hydraulics, coolant, compressed air)
00:18 - Mounting the specimen
00:39 - Running the test
01:07 - Advantages and features
#fatiguetest #vibrophore #cyclicloading

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More information www.zwickroell.com/products/dynamic-and-fatigue-testing-systems/vibrophores/