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Leichtbau im Automobil (LiA) Show image information
Leichtbau im Automobil (LiA) Show image information
Leichtbau im Automobil (LiA) Show image information
Leichtbau im Automobil (LiA) Show image information

Leichtbau im Automobil (LiA)

Leichtbau im Automobil (LiA)

Leichtbau im Automobil (LiA)

Leichtbau im Automobil (LiA)

Facilities

Material and Component Characterisation

Quastistatic & Cyclic

  • Tensile / Compression Tests
    • Max. Test Load ±250 kN
    • Test Temperatures T = -130 °C…1400 °C
    • Test Rate 0,005-750 mm/min
  • Cylinder Slug Tests
  • 3- & 4-Point-Bending-Tests
  • Plate-Bending-Tests
  • Tensile Shear Tests
  • Cupping Tests
    • Nakajima and Marciniak
    • Test Temperatures up to 550 °C
  • Bulge Tests
    • Test Temperatures up to 550 °C
  • Uni- und multiaxial Tests
    • Max. Test Load 80 kN
    • Max. Throw 150 mm
    • Max. Test Frequency 35 Hz
    • Max. Piston Speed 4 m/s
  • Flexible test stands and component geometries feasible

Dynamic

  • Component crash tests
    • 3-Point-Bending
    • Axial Buckling
    • Cariage Speed up to 25 m/s
    • Variable Cariage Masses for Component Testing up to 600 kg
    • Max. Energy 32 kJ
    • Variable Impactor geometries
    • Controlled Delay
  • High Speed Tensile Tests
    • Max. Speed 20 m/s
  • High SpeedCupping Tests
    • Nakajima and Marciniak

Specific Measurement Techniques

  • Optical Sample and Component analyis up to 100 kHz
    • Local 2D and 3D Deformation and Elongation Alaysis (GOM Pontos, Aramis)
    • Analysis of complex motion sequences, modes of vibration, relative displacements
  • Force measurement
    • global with measuring boxes
    • quasi local with strain gauges at instrumented clamping tools
    • local with strain gauges
  • Strain Measurement
    • Strain gauges
    • Video extensometer
    • Bi-Axial extensometer

Metallography

  • Wet Cutoff Machine with automatic Cutting Stroke
  • Automatic grinding and polishing machine
  • Vickers Hardness Tests from HV 0,3 to HV 30
  • Structural Analysis with a reflected light microscope
  • dye penetrant examination to detect near-surface cracks and pores

2. Simulation

  • Creation of material cards for metallic materials and FRP
    • Deformation behaviour
    • Material failure
    • Strain rate dependency
    • Temperature dependency
  • Component design with LS-Dyna, ABAQUS und HYPERWORKS
    • Topology optimisation
    • Valdation of the Simulation with the help of optical measurement techniques
  • Complete vehicle simulation with LS-Dyna
    • Intrusion analysis
    • Crash behaviour analysis
  • Material simulation with JMatPro
    • ZTU-Diagrams
    • Phase diagrams
    • mech. Properties
  • Utilisation of the hardware of the PC²-Clusters OCULUS
    • up to 400 CPUs usable for explicite simulation
    • NVIDIA Tesla-Cards additionally for implicite simulation
    • Top 10 of Germanys fastes calculating clusters (200 TFLOPS CPU, 40 TFLOPS GPU)
    • CAD / FE-workstations

3. Component and Demonstrator Manufacturing

  • Process Chain to manufacture hybride structures based on the Prepreg-Press-Technology
    • Automated Handling with Industrial robots, adapted vakuum grab and handling techniques
    • Implemented quality saving procedures entsprechend industriellen Best-Practice
    • Computer-controlled cut of CFRP/GFRP Prepregs with an ultrasonic-cutter
    • Dimensions of the cutter table: 3000 x 2000 [mm²]
  • 3C-RTM-machine to process EP- and PU-resins
    • Mixture Ratio A:B:C up to 1:1:1
    • Max. injektion pressure: 40 bar
    • Capacity: up to 500 g/min
    • Heating of the reservoir and the cable-hose assembly up to 120 °C
    • Measurement system / sensor system: a. o. discharges, viscosity, temperatures,metering rate
  • Different tools to manufacture mere FRP- and metall-FRP-hybrid structures
  • Different heating technologies
    • Induktion
    • Resistance heating
    • Radiation heating
    • Fluid bed
  • Conventional / Partial hot forming
  • Partial heat treatment
  • Fibre wind-up unit
Contact

Dr.-Ing. Thorsten Marten

Leichtbau im Automobil

Thorsten Marten
Phone:
+49 5251 60-5335
Fax:
+49 5251 60-5333
Office:
Y2.219

Dr.-Ing. Christian Lauter

Leichtbau im Automobil

Christian Lauter

The University for the Information Society