Laboratory

Laboratory equipment

3D Printer

The Form 2 (formlabs company) is a 3D printer that can be used to create innovative products using the SLA printing process. This is used to print solid, detailed models with an impressive surface finish and test their material properties.

Materials printed and studied:

Tensile / compression / torsion / flexure tests

Various experiments are carried out at our institute to determine material properties (such as the modulus of elasticity). To perform tensile, compression and torsion tests, the following testing machines are available:

Schenck Hydropuls-System POZ 0566 with characteristic values: 25 kN (Last) / 20 Hz
Schenck Hydropuls-System PEZ 4125 with characteristic values: 63 kN (Zug/Druck) / 500 Nm (Torsion) / 20 Hz
Schenck-Rütteltisch-System SM-1 with characteristic values: max. Mass: 250 kg / 10 Hz
Hegewald & Peschke MPT GmbH Universalprüfmaschine inspekt Duo 5kN - Size L
- Load cell 2kN
- Test chamber height 1605 mm
- Testing speed 1.5 µm/min to 1,200 mm/min

Microscopy

Digitalmikroskop VHX-900F (company Keyence)

The VHX-900F series digital microscope operates in full-frame mode and can image a 1600(H)x1200(V) pixel area at a frame rate of 50 fps. Thanks to the freely adjustable viewing system, viewing the same position from different angles is possible. In addition, the microscope has a depth composition function and 3D display function, enabling 3D viewing of surfaces from different angles by depth composition. The microscope also has the capability for precise measurements during and after live acquisition, and the data can be output to other programs such as Excel or a CAD program.

Equipment:

freely adjustable viewing system (motorized Z-axis object stage) VHX-S90F
Universal zoom lens (20-200x) VHX-Z20T
Universal zoom lens (100-1000x) VH-Z100R/W/T

Color 3D Laser Microscope VK-8710 (company Keyence)

With the help of a laser scanning microscope, profile, roughness and coating thickness measurements are carried out contact-free with high resolution. The KEYENCE laser scanning microscope uses two light sources for this purpose: Laser light and white light. The laser is used to scan the surface to be inspected, so that image captures and height measurements are digitized. By using white light, the color of the surface can be determined.

Equipment:

Nikon zoom lens (10-100x)

Split-Hopkinson-Bar

A split Hopkinson bar test is the most widely used experiment for dynamic material characterization, with distortion rates ranging from 500 s^-1 to 10⁴ s^-1. A uniform one-dimensional stress load can be applied to the material under test using the method. This is done with an approximately constant distortion rate. Of course, different dynamic loads such as tension, compression and torsion, which can vary depending on the application and design, can also be applied. Here, the specimen stress and distortion is determined by elastic elements arranged in series with the specimen. Available are:

Small Type: max. Energy: ca. 70 Ws

Length projectile: 100-300 mm
Length incident bar: 1800mm
Length transmission bar: 1800 mm
Material: aluminum, steel or PMMA
Plain bearing guides

Large Type: max. Energy: ca. 100,000 Ws
- Rod Ø: 50 mm
- Projectile Ø: 48 mm
- Length of projectile: 100 mm (Masse: ca. 1,42 kg)
- Length of incident bar: 3260 mm
- Length of transmission bar: 3288 mm
- air bearing rod guides

Strain gage measuring equipment

Strain gauge available

Contact

Further details in personal consultation with Dr.-Ing. Ralf Nötzel

Phone: +49 271 740 2158

E-Mail: ralf.noetzel@uni-siegen.de

Aktualisiert via XIMS am 27.1.2023 von M. Werner