Resonance testing machine 25 kN to 1,000 kN

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

Video Advantages and features Technical data Customer projects FAQ

The resonance testing system for static and dynamic tests

A vibrophore is a resonance testing machine that uses a mechanical resonator in connection with an 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.

In the past, resonance testing systems and resonance testing machines were limited to dynamic materials testing (i.e. the determination of fatigue strength). With the newest generation of the vibrophore series high-frequency pulsators, you can perform static tests at test forces up to 1,000 kN. The electromagnetic drive of a vibrophore delivers large force amplitudes with low energy input, so they work more efficiently than conventional instruments.

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.

Videos: Vibrophores in operation

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

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

Fatigue test on reinforcing bars — For high cycle fatigue tests on concrete-reinforcing steel, the ends of the specimen are embedded. The test is performed using a 500 kN resonance testing system.

For high cycle fatigue tests on concrete-reinforcing steel, the ends of the specimen are embedded. The test is performed using a 500 kN resonance testing system.

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)

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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,

Determination of finite life fatigue strength and high cycle fatigue strength – high cycle fatigue (HCF) test / S-N test
Determination of the fracture mechanics

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

Fmax	25	kN
Mean load max.	±25	kN
Force amplitude max.	±12.5	kN
Specimen elastic strain (oscillation displacement) max.	6 (±3)	mm
Test frequency range¹	35 to 300	Hz
No. of frequency steps²	8
No. of guide columns	4
No. of lead-screw drives	2
Frame stiffness at 1000mm crosshead separation³	Approx. 170	kN/mm
Drive
Static tests and for mean force control	AC drive
min. crosshead speed	0.0001	mm/min
max. crosshead speed	600	mm/min
Maximum crosshead return speed	1000	mm/min
Repeat positioning accuracy on crosshead	±2	µm
Motor holding break	Yes
Dynamic tests	Wear-free electro-magnetic drive
Load-frame dimensions
H4 - height	2375	mm
H3 - clamping-table height	693	mm
H2 - height of test area	1200	mm
H5 - height test area including force measurement chain	1100	mm
B2 - width	890	mm
T3 - depth	645	mm
T2 - depth, base	482	mm
Weight (approx.)⁴	1900	kg
Test area dimensions
Test-area height without load cell	1200	mm
Test area depth	482	mm
Free access width between columns	610⁵	mm
Max. travel, machine frame	1099	mm
Item No.
Vibrophore 25 including testControl II	1050926
Optional: two in one for static tests	1028357
Optional: oscillation displacement measurement	1033236

The testing frequency is determined by the stiffness and mass of the test arrangement.
via activation / deactivation of weights
Load frame stiffness: this value is obtained via direct deformation measurement between the crossheads (moving and base crossheads) and does not take into account deformation of the drive and load cell.
Weight without specimen grips or fixtures
without bellows

Fmax	50	kN
Mean load max.	±50	kN
Force amplitude max.	±25	kN
Specimen elastic strain (vibration displacement) max.	6 (±3)	mm
Test frequency range¹	35 to 300	Hz
No. of frequency steps²	8
No. of guide columns	4
No. of lead-screw drives	2
Frame stiffness at 1000mm crosshead separation³	approx. 170	kN/mm
Drive
Static tests and for mean force control	AC drive
min. crosshead speed	0.0001	mm/min
max. crosshead speed	600	mm/min
max. crosshead return speed	1000	mm/min
repeat positioning accuracy on crosshead	±2	µm
Motor holding brake	Yes
Dynamic tests	wear-free electro-magnetic drive
Load-frame dimensions
H4 - height	2375	mm
H3 - clamping-table height	693	mm
H2 - test-area height	1200	mm
H5 - test-area height including load cell	1100	mm
B2 - width	890	mm
T3 - depth	645	mm
T2 - depth of base	482	mm
Approx. weight⁴	1900	kg
Test area dimensions
Test-area height without load cell	1200	mm
Test area depth	482	mm
Free access width between columns	610⁵	mm
Max. travel, machine frame	1099	mm
Item No.
Vibrophore 50 including testControl II	1023099
Optional: Two in One for static tests	1028360
Optional: vibration displacement measurement	1033326

The testing frequency is determined by the stiffness and mass of the test arrangement.
via activation / deactivation of weights
Load frame stiffness: this value is obtained via direct deformation measurement between the crossheads (moving and base crossheads) and does not take into account deformation of the drive and load cell.
Weight without specimen grips or fixtures
without bellows cover

Fmax	100	kN
Mean load max.	±100	kN
Force amplitude max.	±50	kN
Specimen elastic strain (oscillation displacement) max.	6 (±3)	mm
Test frequency range¹	30 ... 285	Hz
No. of frequency steps²	8
No. of guide columns	4
No. of lead-screw drives	2
Frame stiffness at 1000mm crosshead separation ³	approx. 380	kN/mm
Drive
Static tests and for mean force control	AC drive
min. crosshead speed	0.0001	mm/min
max. crosshead speed	600	mm/min
max. crosshead return speed	1000	mm/min
repeat positioning accuracy on crosshead	±2	µm
motor holding brake	yes
Dynamic tests	wear-free electro-magnetic drive
Load-frame dimensions
H4 - height	2565	mm
H3 - clamping-table height	794	mm
H2 - test area height	1200	mm
H5 - test area height including load cell	1007	mm
B2 - width	1094	mm
T3 - depth	770	mm
T2 - base depth	553	mm
Approx. weight⁴	3200	kg
Test area dimensions
Test-area height without load cell	1200	mm
Test area depth	550	mm
Free access width between columns	626⁵	mm
Max. travel, machine frame	977.5	mm
Item No.
Vibrophore 100 including testControl II	084142
Optional: two in one for static tests	1009579
Optional: oscillation displacement measurement	1001259

The testing frequency is determined by the stiffness and mass of the test arrangement.
via activation / deactivation of weights
Load frame stiffness: this value is obtained via direct deformation measurement between the crossheads (moving and base crossheads) and does not take into account deformation of the drive and load cell.
Weight without specimen grips or fixtures
without bellows boot

Fmax	250	kN
Mean load max.	±250	kN
Force amplitude max.	±125	kN
Specimen elastic strain (oscillation displacement) max.	6 (±3)	mm
Test frequency range¹	30 ... 285	Hz
No. of frequency steps²	8
No. of guide columns	4
No. of lead-screw drives	2
Frame stiffness at 1000mm crosshead separation ³	approx. 380	kN/mm
Drive
Static tests and for mean force control	AC drive
min. crosshead speed	0.0001	mm/min
max. crosshead speed	600	mm/min
max. crosshead return speed	1000	mm/min
repeat positioning accuracy on crosshead	±2	µm
motor holding brake	yes
Dynamic tests	wear-free electro-magnetic drive
Load-frame dimensions
H4 - height	2565	mm
H3 - clamping-table height	794	mm
H2 - test area height	1200	mm
H5 - test area height including load cell	915	mm
B2 - width	1094	mm
T3 - depth	770	mm
T2 - base depth	553	mm
Approx. weight⁴	3200	kg
Test area dimensions
Test-area height without load cell	1200	mm
Test area depth	550	mm
Free access width between columns	626⁵	mm
Max. travel, machine frame	925	mm
Item No.
Vibrophore 250 including testControl II	1001253
Optional: two in one for static tests	1009581
Optional: oscillation displacement measurement	1001259

The testing frequency is determined by the stiffness and mass of the test arrangement.
via activation / deactivation of weights
Load frame stiffness: this value is obtained via direct deformation measurement between the crossheads (moving and base crossheads) and does not take into account deformation of the drive and load cell.
Weight without specimen grips or fixtures
without bellows boot

Fmax	500	kN
Mean load max.	± 500	kN
Force amplitude max.	± 250	kN
Specimen elastic strain (oscillation displacement) max.	4 (± 2)	mm
Test frequency range¹	35 to 285	Hz
No. of frequency steps²	8
No. of guide columns	4
No. of lead-screw drives	2
Frame stiffness at 1000mm crosshead separation³	approx. 960	kN/mm
Drive
Static tests and for mean force control	AC drive
min. crosshead speed	0.0001	mm/min
max. crosshead speed	250	mm/min
Maximum crosshead return speed	1000	mm/min
Repeat positioning accuracy on crosshead	± 2	µm
Motor holding brake	Yes
Dynamic tests	Wear-free electro-magnetic drive
Load-frame dimensions
H4 - height	3465	mm
H3 - clamping-table height	930	mm
H2 - height of test area	1680	mm
H5 - height of test area including load cell	1347	mm
B2 - width	1220	mm
T1 - depth	1369	mm
Weight (approx.)⁴	9000	kg
Test area dimensions
Test-area height without load cell	1700	mm
Test area depth	640	mm
Free access width between columns	780⁵	mm
Max. travel, machine frame	1700	mm
Item No.
Vibrophore 500 including testControl II	1011633
Optional: two in one for static tests	1012275
Optional: oscillation displacement measurement	1012273

The testing frequency is determined by the stiffness and mass of the test arrangement.
via activation / deactivation of weights
Load frame stiffness: this value is obtained via direct deformation measurement between the crossheads (moving and base crossheads) and does not take into account deformation of the drive and load cell.
Weight without specimen grips or fixtures
without bellows boot

Fmax	600	kN
Mean load max.	± 600	kN
Force amplitude max.	± 300	kN
Specimen elastic strain (oscillation displacement) max.	4 (±2)	mm
Test frequency range¹	30 ... 265	Hz
No. of frequency steps²	8
No. of guide columns	4
No. of lead-screw drives	2
Frame stiffness at 1000mm crosshead separation³	approx. 880	kN/mm
Drive
Static tests and for mean force control	AC drive
min. crosshead speed	0.0001	mm/min
max. crosshead speed	250	mm/min
max. return speed	1000	mm/min
Repeat positioning accuracy on crosshead	± 2	µm
Motor holding brake	Yes
Dynamic tests	wear-free electro-magnetic drive
Load-frame dimensions
H4 - height	3465	mm
H3 - clamping-table height	930	mm
H2 - test area height	1680	mm
H5 - test area height including load cell	1347	mm
B2 - width	1220	mm
T2 - depth	1369	mm
Weight approx.⁴	9000	kg
Test area dimensions
Test-area height without load cell	1700	mm
Test area depth	640	mm
Free access width between columns	780⁵	mm
Max. travel, machine frame	1700	mm
Item No.
Vibrophore 600 including testControl II	1030616
Optional: two in one for static tests	1012275
Optional: oscillation displacement measurement	1012273

The testing frequency is determined by the stiffness and mass of the test arrangement.
via activation / deactivation of weights
Load frame stiffness: This value is obtained via direct deformation measurement between the crossheads (moving and base crossheads) and does not take into account deformation of the drive and load cell.
Weight without specimen grips or fixtures
without bellows boot

Fmax	1000	kN
Mean load max.	±1000	kN
Force amplitude max.	±500	kN
Specimen elastic strain (oscillation displacement) max.	4 (±2)	mm
Test frequency range¹	30 ... 285	Hz
No. of frequency steps²	8
No. of guide columns	4
No. of lead-screw drives	2
Frame stiffness at 1000 mm crosshead separation³	approx. 880	kN/mm
Drive
Static tests and for mean force control	AC drive
min. crosshead speed	0.0001	mm/min
max. crosshead speed	250	mm/min
max. crosshead return speed	1000	mm/min
Repeat positioning accuracy on crosshead	± 2	µm
Motor holding brake	Yes
Dynamic tests	Wear-free electro-magnetic drive
Load-frame dimensions
H4 - height	4538	mm
H3 - clamping-table height	1058	mm
H2 - test area height	2320	mm
H5 - test area height including load cell	2005	mm
B2 - width	1620	mm
T2 depth	1445	mm
Weight approx.⁴	17500	kg
Test area dimensions
Test-area height without load cell	2310	mm
Test area depth	1995	mm
Free access width between columns	982⁵	mm
Max. travel, machine frame		mm
Item No.
Optional: Two in one for static tests	1017257
Optional: Oscillation displacement measurement	1012273

The testing frequency is determined by the stiffness and mass of the test arrangement.
via activation / deactivation of weights
Load frame stiffness: This value is obtained via direct deformation measurement between the crossheads (moving and base crossheads) and does not take into account deformation of the drive and load cell.
Weight without specimen grips or fixtures
without bellows boot

testControl II measurement and control electronics
Control frequency	10 kHz
Measured-value acquisition	10 kHz, 24 bits, arithmetical
Slots	5 x module bus (2 occupied as default)
PC interface	GigaBit Ethernet
Integrated safety concept	2-channel specification for maximum safety
	interface for interlocked safety doors
	interface for Emergency STOP loop
Display-equipped remote control unit	set-up or testing mode
	Emergency STOP button
	key-switch for switching between setup and testing modes
Dimensions, testControl II measurement and control electronics
H1-height without table plate	1000	mm
B1-width	600	mm
T1-depth	600	mm
Approx. weight	135	kg
Length of cable Vibrophore - testControl II	5	m
Accessories
Universal measurement amplifier (029443)	Choice of AC/DC supply
	Half and full-bridge strain-gages
	4 and 6-conductor technology
I/O card (029448)	1 analog ± 10V input (controllable)
	2 analog ± 10V outputs
	4 digital inputs, 24V
	3 digital outputs, 24V
	1 relay output, potential-free

Related products and accessories for the resonance testing system

Interesting applications for resonance testing machines

High Cycle Fatigue Test / S-N Test

DIN 50100

to High Cycle Fatigue Test / S-N Test

Fracture mechanics: crack growth da/dN and threshold value

ASTM E647

to Fracture mechanics: crack growth da/dN and threshold value

Fracture mechanics: critical stress intensity factor K1C

ASTM E399

to Fracture mechanics: critical stress intensity factor K1C

Tensile test on metals

ISO 6892-1

to Tensile test on metals

Downloads

Product information: Vibrophore 25 PDF 232 KB
- DE
- EN
Product information: Vibrophore 50 PDF 227 KB
- DE
- EN
Product information: Vibrophore 100 PDF 320 KB
- DE
- EN
Product information: Vibrophore 250 PDF 310 KB
- DE
- EN
Product information: Vibrophore 500 PDF 312 KB
- DE
- EN
Product information: Vibrophore 600 PDF 314 KB
- DE
- EN
Product information: Vibrophore 1000 PDF 325 KB
- DE
- EN
Product information: Load cell Xforce dynamic PDF 314 KB
- DE
- EN
Product brochure: Dynamic PDF 5 MB
- DE
- EN

Interesting customer projects

Other companies use the Vibrophore

The Technical University of Gabrovo performs fatigue tests with the Vibrophore 100

Technical University of Gabrovo – Faculty of Mechanical and Precision Engineering, Bulgaria

The University of Gabrovo performs fatigue tests on structural components made of high-strength aluminum alloys, mild steel and bronze. During a new project, our Vibrophore 100 was used for research purposes.

FAQ

What is a vibrophore?

A vibrophore is an oscillation system that uses a mechanical resonator in connection with an electromagnetic drive. Vibrophores can be used to apply a dynamic load on material specimens.

What are vibrophores used for?

Vibrophores are used for high cycle fatigue tests in the areas of tensile, compression, pulsating and alternating loads. In addition, fracture mechanics tests are performed on CT (compact tension) and SEB (singe edge bending) specimens.

What are typical applications for vibrophores?

Vibrophores are used on drive chains, crankshafts, piston rods and timing chains in vehicle motors, on turbine blades or concrete and reinforcing steel.

What is special about fatigue testing machines from ZwickRoell?

ZwickRoell vibrophores are available in eight models for resonance fatigue tests up to 1,000 kN. The extremely stiff load frame consists of four columns to achieve excellence in guide qualities. 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.