Mechanical testing

Testing mechanical properties

In addition to the classic test methods, in which load is applied to the test specimens quasi-statically, our internally standardised test arrangements enable us to carry out the same tests on servo-hydraulic testing machines. This makes it possible, for example, to make determinations on the fatigue strength of materials.

 

The available testing machines are equipped with various force sensors and displacement measuring systems as well as temperature chambers in order to cover the widest possible range of tasks. Tests can be carried out on standardised specimens as well as on components. For special problems, new testing concepts can be developed in cooperation with our research workshop or with other departments.

Ermüdungsprüfung | Polymer Engineering Bayreuth

Ansprechpartner: Dipl.-Ing. Andreas Mainz
Telefon: +49 921 55 7561
Mail: andreas.mainz@uni-bayreuth.de

Contact: Dipl.-Ing. Andreas Mainz

Phone: +49 921 55 7561

E-mail: andreas.mainz@uni-bayreuth.de

Hardness testing head, Zwick

Maximum load [kN] 2.5
Maximum controllable load [N] 2
Maximum penetration [mm] 3
Test temperature [°C] RT

Test methods

Universal hardness according to DIN 50 359
Ball indentation hardness according to DIN 53 456

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

VideoXtens – contactless measurement system

VideoXtens measures tensile and compressive deformations on all types of plastics, metals, rubber, composites, and foils without contact and in high resolution. It is also suitable for determining change in width, the r- & n-value according to ISO 10113 and ISO 10275, and proof stresses in the tensile test according to EN 10002-1.O 10113 und ISO 10275 und der Dehngrenzen im Zugversuch gemäß EN 10002-1.

  • It is the ideal measuring system for strain measurement on whipping materials (safety belts, steel cables, rubber ropes, etc.).
  • The flexible illumination system (incident light / transmitted light) can be optimally adapted to the respective testing task
  • Suitable for use with temperature chamber with plane-parallel glass insert and heatable pane
  • Resolution and measuring accuracy is high over the entire image size
  • Both length and width change measurement are possible at the same time. No separate marking is required for measuring change in width. Width can be determined at one or more points
  • Measurement paths are variable and, depending on the choice of image size or lens, very large
  • Automatic measuring mark recognition and acquisition of the initial measuring length L0
  • Optional determination of change in width, the r- & n-value according to ISO 10113 and ISO 10275, and proof stress in the tensile test according to EN 10002-1
  • Accuracy class 1 (with field of view ≤ 200 mm) according to EN ISO 9513 and accuracy class 2 according to EN ISO 9513 (with 8 mm lens or field of view > 200 mm).
  • The entire test sequence can be followed on screen, the video sequence can be saved for subsequent evaluation.

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Videoxtens | Polymer Engineering Bayreuth

Laser extensometer, Fiedler Optoelektronik P-50

Scan area [mm] 50

Working distance [mm] 200

Measuring rate [Hz] 50, 200

Measuring time per scan [ms] 5

Resolution [µm] 0.1

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

 

Universal test machine Zwick 1455

Maximum load [kN] 20

Maximum travel [mm] 1500

Test speed [mm/min] 0.01 … 1000

Test temperature [°C] RT

Prüfmethoden

Tensile, compression, bending, hysteresis, creep, relaxation test, determination of fracture mechanical parameters, interlaminar energy release rate

Features

  • macro displacement transducer (lo 10 mm – 100 mm, le = 50 mm)
  • other force sensors: 500 N to 20 kN
  • analogue signal outputs (± 10 V)
  • one analogue input ( ± 10 V)
  • contact extensometer
  • multi-channel measuring amplifier

Location: Polymer Engineering Bayreuth

HDT Vicat heat deflection temperature meter Ceast

It is used to characterise the behaviour of plastics at high temperatures and measures heat deflection temperature (HDT) the Vicat softening temperature (Vicat).

Temperature range [°C] 20 … 300

Temperature accuracy [°C] 0.1

Heating rate [°C/min] 3

Measurement types
HDT, Vicat

Location: Polymer Engineering Hamburg

Universal test machine Zwick Z2,5

Maximum load [kN] 2.5

Maximum test path [mm] 850

Test speed [mm/min] 0.1 … 800
Test temperature [°C] RT

Test methods

Tensile, compression, bending, hysteresis, creep, relaxation test, determination of fracture mechanical parameters, interlaminar energy release rate

Features

Various contact extensometers, inductive extensometers, additional force sensors (2N to 2.5 kN)

Location: University of Bayreuth / Testing Center – Gottlieb Keim Str. 60 – 95448 Bayreuth

 

Universal test machine Zwick 1475

Maximum load [kN] 5 or 100

Maximum test path [mm] 350

Test speed [mm/min] 0.01 … 500

Test temperature [°C] -70 .. 250

Test methods
Tensile, compression, bending, hysteresis, creep, relaxation test, determination of fracture mechanical parameters, interlaminar energy release rate

Features

Macro displacement transducers (l0 10 mm – 100 mm, le = 50 mm), various contact extensometers, inductive extensometers

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Universal test machine Zwick 1485

Maximum load [kN] 5 or 250

Maximum test path [mm] 700

Test speed [mm/min] 0.01 … 500

Test temperature [°C] RT

Test methods
Tensile, compression, bending, hysteresis, creep, relaxation test, determination of fracture mechanical parameters

Features

Macro displacement transducer (l0 10 mm – 100 mm, le = 50 mm), one additional sensor (force, displacement measurement)

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Universal test machine Zwick Z020

Maximum load [kN] v20

Maximum test path [mm] 1700

Test speed [mm/min] 0.001 … 1250

Test temperature [°C] -50 .. 250

Test methods
Tensile, compression, bending, hysteresis, creep, relaxation test, determination of fracture mechanical characteristic values, interlaminar energy release rate, temperature ramp possible in test chamber

Features

Macro displacement transducers (l0 10 mm – 100 mm, le = 50 mm), various contact extensometers, inductive extensometers, additional force sensors (2N to 20 kN)

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Universal test machine Zwick Z050

Maximum load [kN] 50

Maximum test path [mm] 1700

Test speed [mm/min] 0.001 … 400

Test temperature [°C] 20

Test methods
Tensile, compression, bending, hysteresis, creep, relaxation test, universal hardness, ball indentation hardness

Features

Multi-channel measuring amplifier incl. data acquisition software

Additional force sensors (2N to 50 kN)

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Contact: Dipl.-Ing. Alexander Brückner

Phone: +49 921 55 7561

E-mail: alexander.brueckner@uni-bayreuth.de

Servo-hydraulic testing machine (SCHENCK PL10M10l)

Maximum load [kN] ± 10 (static), ± 8 (dynamic)

Maximum test path [mm] 50

Maximum test frequency [Hz] 300

Test temperature [°C] RT bis 250

Test media
Air, (salt)water, oil, etc.

Test methods
Tensile, compression, and bending fatigue tests, hysteresis measurements, fatigue crack propagation, operating load tests, generation of Wöhler curves

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Servo-hydraulic testing machine (IST IPLH10l)

Maximum load [kN] ± 10 (static), ± 8 (dynamic)

Maximum test path [mm] 50

Maximum test frequency [Hz] 100

Test temperature [°C] RT bis 250

 

Test media

Air, (salt)water, oil, etc.

Test methods

Tensile, compression, and bending fatigue tests, hysteresis measurements, fatigue crack propagation, operating load tests, generation of Wöhler curves

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Servo-hydraulic testing machine (SCHENCK PL10N)

Maximum load [kN] ± 10 (static), ± 8 (dynamic)

Maximum test path [mm] 250

Maximum test frequency [Hz] 100

Test temperature [°C] RT to 250

Test media
Air, (salt)water, oil, etc.

Test methods
Tensile, compression, and bending fatigue tests, hysteresis measurements, fatigue crack propagation, operating load tests, generation of Wöhler curves

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Servo-hydraulic testing machine (IST PL10N)

Maximum load [kN] ± 10 (static), ± 8 (dynamic)

Maximum test path [mm] 250

Maximum test frequency [Hz] 100

Test temperature [°C] RT to 250

Test media
Air, (salt)water, oil, etc.

Test methods

Tensile, compression, and bending fatigue tests, hysteresis measurements, fatigue crack propagation, operating load tests, generation of Wöhler curves

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

Servo-hydraulic testing machine (IST IPLH50K)

Maximum load [kN] ± 50 (static), ± 42 (dynamic)

Maximum test path [mm] 100

Maximum test frequency [Hz] 100

Test temperature [°C] RT to 250

Test media
Air, (salt)water, oil, etc.

Test methods
Tensile, compression, and bending fatigue tests, hysteresis measurements, fatigue crack propagation, operating load tests, generation of Wöhler curves

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

 

Servo-hydraulic testing machine (SCHENCK PL25N)

Maximum load [kN] ± 25 (static), ± 20 (dynamic)

Maximum test path [mm] 250

Maximum test frequency [Hz] 100

Test temperature [°C] RT to 250

Test media
Air, (salt)water, oil, etc.

Test methods
Tensile, compression, and bending fatigue tests, hysteresis measurements, fatigue crack propagation, operating load tests, generation of Wöhler curves

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

 

Servo-hydraulic testing machine (SCHENCK PL16N)

Maximum load [kN] ± 16 (static), ± 13 (dynamic)

Maximum test path [mm] 250

Maximum test frequency [Hz] 100

Test temperature [°C] RT to 250

Test media
Air, (salt)water, oil, etc.

Test methods
Tensile, compression, and bending fatigue tests, hysteresis measurements, fatigue crack propagation, operating load tests, generation of Wöhler curves

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

 

Contact: Dipl.-Ing. Andreas Mainz

Phone: +49 921 55 7561

E-mail: andreas.mainz@uni-bayreuth.de

Notched hammer, Zwick / Roell RKP 5113

Maximum energy [J] 50

Drop angle [°] 160

Pendant length [mm] 390

Test methods
Instrumented impact bending test (notched (notch form A) or unnotched) according to Charpy (ISO 179); in addition to the force signal, the angle of rotation of the hammer is recorded;

Features
50 J and 4 J hammer, two test programmes (Impact-Win, testXpert)

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

 

Drop bolt tester, CEAST Fractovis Plus

Energy range [J] 0.6 to 1800

Impact speed [m/s] max. 24

Falling weight [kg] 2 to 70 (in 1 kg steps)

Drop height [mm] 30 to 1100

Test software
CEAST Fracture Mechanics

Special features
Temperature chamber (-70°C to 150°C), anti-rebound device, automatic oil spray device, up to 22 KN drop pin

Fittings
Clamping set for CAI plates, Rotatable sample loader (for 10 samples)

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

 

Kurzzeitdynamische Prüfung | Polymer Engineering Bayreuth

Contat: Dipl.-Ing. Andreas Mainz

Phone: +49 921 55 7561

E-mail: andreas.mainz@uni-bayreuth.de

Creep rupture unit Zwick Kappa 50-SS(6x10KN)

Plastic is increasingly being used as a construction material and must therefore withstand ever greater loads. In addition to static and dynamic tests, creep rupture tests on plastics are therefore becoming increasingly important in research. We use a testing machine from Messphysik – a member of the Zwick Roell Group – to carry out a wide range of tests on plastics.

The determination of the creep behaviour has become indispensable for the development of new materials in the field of plastics. In the testing machine, up to six specimens can be loaded simultaneously for tension, compression, and 3-point bending. The change in material properties over time can be determined both at constant strain (relaxation) and at constant stress (retardation) and under the influence of temperature. In addition to these pure creep loads, different load profiles can also be applied. At Polymer Engineering, a wide variety of materials are tested, such as elastomers, composites, and thermoplastics.

In order to be able to make a statistically reliable statement in the shortest possible time, up to six samples are tested simultaneously in this testing machine. Since a standard test typically takes 33 days (1000h), this is a decisive advantage. In order to further shorten test duration, test results are extrapolated to 1000 hours within a short period.

The deformation of the samples is measured contactless by a video extensometer, both at room temperature and at elevated temperature. For this purpose, the testing machine is equipped with a temperature chamber which allows tests between -50°C and +250°C. With the testXpert® II testing software in combination with the testControl measurement and control electronics, all test sequences and evaluations required can be freely defined..

Maximum load [kN] 6 x 10

Maximum test path [mm] 250

Test speed [mm/min] 0.01 … 100

Test temperature [°C] -50 to 250

Test methods
Tensile, compression, bending, hysteresis, creep, relaxation test, determination of fracture mechanical parameters

Features
6 x optical macro displacement transducers, 2-fold temperature measurement per sample, analogue signal outputs (± 10 V), one analogue input ( ± 10 V)

Location: University of Bayreuth / Testing Centre – Gottlieb Keim Str. 60 – 95448 Bayreuth

 

 

Standort: Universität Bayreuth / Testing Center – Gottlieb Keim Str. 60 – 95448 Bayreuth

WEITERE AUSSTATTUNG UND TECHNIKA

English