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Vibrophores

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Industries
  • Metals
  • Automotive
  • Medical
  • Academia
  • Construction materials
Test load
  • 25 - 1,000 kN
Type of test
  • Fatigue
  • Fracture mechanics
  • Tensile
  • Compression
Standards
  • DIN 50100
  • ASTM E399
  • ASTM E647
  • ASTM E466
  • ISO 6892

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.<br/><br/>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.

Fatigue test on threaded fasteners using a vibrophore

The vibrophore series of resonance testing machines can be used for fatigue tests on threaded fasteners.

Advantages & Features

Advantages & Features

Advantages & Features
Two in One - the Advantages
Dynamic testing
Static Tests

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)

Two in One - the Advantages

The Vibrophore Is a Full-Fledged Dynamic and Static Testing Machine in One

  • Short test times and a high specimen throughput level for dynamic tests due to high frequencies
  • Minimum energy is required thanks to the resonance principle (approx. 2% of the energy required by a servohydraulic testing machine)

Dynamic testing

Materials and components may fail prematurely under oscillating loads. For this reason, the behavior of materials under alternating mechanical loading is an important decision criterion,

The operating principle of the ZwickRoell Vibrophore is based on the concept of a mechanical resonator with electromagnetic drive. The mean force is applied by moving the upper crosshead with the lead screw drive. The dynamic load is generated by an oscillation system that works when the system operates at full resonance. In this way test frequencies of up to 285Hz are possible, provided the specimens are sufficiently stiff. The dynamic and static drives are controlled separately, so that stress ratios (R-ratios) of any kind are possible. Tests can be force-, displacement- or strain-controlled.

Static Tests

Mechanical clamping of the oscillating crosshead and the implementation of the testXpert III testing software transform the Vibrophore into a true static materials testing machine.

Generous connecting surfaces and robust components ensure high machine stiffness. In combination with precision crosshead guidance, the Vibrophore minimizes unacceptable mechanical influences on the specimen. By using suitable accessories, both static and dynamic tests can be performed under various environmental conditions (temperature, aggressive media). The Vibrophore can also be configured for torsion and flexure tests. The absence of a central lead screw enables test area variability to be maximized on the new Vibrophore,which makes it possible to test very short specimens as well as large components.

Technical overview

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Related products and accessories for the resonance testing system

Interesting applications for resonance testing machines

Castings and forgings
ZwickRoell offers testing machines for tensile tests, torsion tests, and fatigue tests on castings and forgings
to Castings and forgings
Testing of bolts, screws and studs
As fasteners, bolts, screws and studs are not only considered universally important in industry settings, but also for every day purposes, making them subject to strict safety requirements.
to Testing of bolts, screws and studs
Testing of nuts
In addition to screws, nuts are also universally considered important fasteners and must therefore be strictly controlled.
to Testing of nuts
Fasteners
ZwickRoell offers a wide range of solutions for weld seam tests or testing of riveted joints.
to Fasteners
Engine components
ZwickRoell offers numerous testing solutions for engine development that use real conditions for testing new materials and applying higher loads.
to Engine components
Tensile test on metals
ISO 6892-1
to Tensile test on metals
High Cycle Fatigue Test / S-N Test
DIN 50100
to High Cycle Fatigue Test / S-N Test
Low cycle fatigue (LCF) test
ISO 12106, ASTM E606
to Low cycle fatigue (LCF) test

Downloads

Name Type Size Download
  • Product information: Vibrophore 25 PDF 232 KB
  • Product information: Vibrophore 50 PDF 227 KB
  • Product information: Vibrophore 100 PDF 320 KB
  • Product information: Vibrophore 250 PDF 310 KB
  • Product information: Vibrophore 500 PDF 312 KB
  • Product information: Vibrophore 600 PDF 314 KB
  • Product information: Vibrophore 1000 PDF 325 KB
  • Product information: Load cell Xforce dynamic PDF 314 KB
  • Product brochure: Dynamic PDF 5 MB

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