Velocity-based Frequency Response Functions of Rectangular Carbon Composite Plates with Weave Angle Variations

Measurement data of 14 rectangular carbon fiber composite plates.

Plates:

- Plate dimensions: x = 240 mm, y = 480 mm, z = 1-1.4 mm.

- Two weave types are utilized: Twill weave (german: "Köper") and unidirectional (UD) fabric. For each composite plate four layers of one weave type with similar weave angle are used.

- The orientation angle of the weave layers compared to the longer edge y varies between 0° and 45° (Twill) / 90° (UD) in 7.5° (Twill) / 15° (UD) steps.

Measurements: 

Velocity-based frequency response functions (FRF) are captured (in z direction) with a laser scanning vibrometer (Polytec PSV-500) in 289 positions. The plates are excited by an automated miniature impact hammer (based on PCB model 086E80). FRFs are complex averaged over 5 takes per position. The plates are vertically attached to rubber bands, the boundary conditions can be assumed as 'free' for frequencies > 10 Hz.

Data: 

The measurement data is stored in .uff files. Notwithstanding the age of the format, it holds all information needed to handle the datasets and files can be comfortably assessed with e.g. Python (Package: pyuff) or Matlab.

File naming: 

Example: 'VelocityFRF_Twill_Weave_00°.uff'

- Twill / UD differentiates between used weave types
- The angle depicts the weave orientation in relation to the longer edge y.

This data set belongs to a submitted publication, cross links will be made available as soon as the review process is completed.

If you have questions or comments about the data set feel free to contact us: 
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