Optical Measurement

Contact

Name

Lisa-Marie Reitmaier

Manager Research Group Sheet Metal Forming

Phone

work
+49 241 80 25117

Email

E-Mail
 

The Institute of Metal Forming has a wide range of modern optical measuring equipment at its disposal, which enables it to perform a variety of tasks in the field of material characterization, component analysis and machine monitoring:

  • Optical strain measuring system – GOM ARGUS and ARAMIS
  • Optical 3D surface measuring systems – GOM ATOS and HandySCAN 700
  • Optical 3D coordinate measuring system – GOM TRITOP
  • Surface topography with digital microscope

The possible applications of measurement technology at IBF range from the determination of 3D surface structures to the deformation analysis of parts under load by an optical 3D coordinate measuring system.

 
 

Optical Strain Measuring System – GOM ARGUS and ARAMIS

ARAMIS measuring system and strain distribution of a sheet specimen during forming Copyright: © IBF ARAMIS measuring system and strain distribution of a sheet specimen during forming

Modern optical measurement technology enables the determination of the strain distribution during forming as well as afterwards. The ARAMIS measuring system from GOM available at the Institute of Metal Forming, IBF for short, enables the measurement of local strains during the experiment. For this purpose, the change of a stochastic pattern located on the sample is used. This measurement methodology is used, for example, in the Nakajima test, the gas-based cupping test and the tensile test.

The ARGUS software from GOM can be used to determine the strain distribution of a sheet sample after forming. Here, the formed sample is prepared with deterministic pattern. By comparing the initial and formed state of the pattern, local strains can be determined.

 
 

Optical 3D Surface Measuring Systems – GOM ATOS and HandySCAN 700

Geometry comparison between a formed part and the CAD model Copyright: © IBF Geometry comparison between a formed part and the CAD model

The optical 3D measuring devices ATOS from GOM and HandySCAN 700 from CREAFORM are used at the institute for contact-free 3D surface inspection of components. Comparisons between CAD models, simulation geometry and physical parts can thus be realized. Depending on the system, accuracies of up to 0.03 mm can be achieved.

 
 

Optical 3D Coordinate Measuring System – GOM TRITOP

Deformation analysis of a rolling mill under load Copyright: © IBF Deformation analysis of a rolling mill under load

The optical 3D coordinate measuring system GOM TRITOP is used at the institute for the precise registration of 3D coordinates of discrete measuring points as well as for the measurement of deformation by a comparison of the unloaded state with the loaded state and for quality control.

The system allows the measurement of objects up to more than 20 m in size.

 
 

Surface Topography with Digital Microscope

Digital Microscope Keyence VHX-1000D at IBF Copyright: © IBF Digital Microscope Keyence VHX-1000D at IBF

Keyence's VHX-1000D Digital Microscope can be used to measure and visualize 2D and 3D surfaces. The possible applications range from the measurement of metallographic sections, inclusions and pores (2D) to riblet- or EDT-surfaces (3D). Magnifications from 20x to 200x or 250x to 2500x can be realized with this microscope.