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Vibrophores

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Industries
  • Metals
  • Automotive
  • Medical
  • Academia
  • Construction materials
  • ttt
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.

Vibrophore 1000 – connecting rod and screw tests with Vibrophores

The Vibrophore series of resonance testing machines can be used for tests on connecting rods and screws, with high forces.

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, for which the necessary data are obtained through testing.

There are two categories of fatigue in materials testing:

  • Determination of low cycle fatigue strength – low cycle fatigue (LCF) test
  • Determination of finite life fatigue strength and high cycle fatigue strength – high cycle fatigue (HCF) test / S-N test

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 deployment of testXpert III 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

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 ISO 6892-1

Description of tensile testing on metals, ISO 6892 and ASTM E8.
to Tensile test ISO 6892-1

High Cycle Fatigue Test / S-N Test

In the high cycle fatigue test (also S-N test) to DIN 50100 the specimen is tested at medium and low cycle amplitudes.
to High Cycle Fatigue Test / S-N Test

Low cycle fatigue (LCF) test

In the low cycle fatigue (LCF) test to ISO 12106 / ASTM E606, the specimen is tested at high cycle amplitudes and plastic deformation.
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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