-- DanielSantos? - 30 Oct 2006

XYZ Adhesion Testing 1

Test Setup

  • 3-axis XYZ stage.
  • Control loop at 1kHz embedded on Microchip PIC18F4431?
  • Control done using trajectory files with waypoints and linear interpolation
  • Sampling force plate at 1kHz.
    • Data filtered at 10 Hz using 3rd order Butterworth filter
  • Sampling position data at 500Hz

Experiment #1


  • Preload along 45 degree approach angle to a specified depth in Z (between 0 to 1000um)
  • Pulloff at specified angle defined by:
    • +Z is the contact normal, +Y is aligned with the "direction of curvature" of the samples, +X to enforce right-handedness
    • Begin with vector, V, aligned along +Y-axis
    • Rotate V about +Z-axis by angle Theta, between 0 and 180 degrees in 15 degree increments
    • Rotate V about +Y-axis by angle Phi, between 0 and 180 degrees in 15 degree increments
    • Pull-off along vector V
  • Pulloff measured by finding maximum value of V-dot-F in sampled force data


  • Sample - Directional Adhesive Pad, "Long"-type, #1A
  • Substrate - Glass

Results for Sample 1A

  • Pulloff in YZ-plane - similar to previous data for 2-axis stage)


  • Pulloff in XZ-plane - effects of side loading on adhesion strength


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