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Bias Sample - Short Segment Test

Bias Sample - Short Segment Test

There are the following tests for the bias sample:

  • Long segment test

  • Short segment test

To run the short segment test:

  1. If not already at the FAB user interface, start the FAB, open DB Admin, and click Use FAB. For more information, refer to Using the FAB.

  2. On the list on the left side of the page, click Bias - Short Segment.

    Short segment test

  3. At Enter fabric width, type in the sample width. (The default is 5 cm.)

    Type in sample width

  4. Remove any sample fabric from the machine.

  5. Click Start. The movable clamp moves into place.

  6. Slide the narrow block (without grooves) between the clamps.

    Positioning the narrow block

  7. Position the fabric sample on the FAB according to Positioning Fabric for Short Segment Tests.

  8. Remove the block.

  9. Click Start.

  10. Wait for step 2 to complete. This is indicated by a blue tick displaying at the step.

    Step 2 is complete

  11. Slide a pencil or a pen under the sample to very lightly create an upward arch.

  12. Click Start.

  13. Wait for step 3 to complete. This is indicated by a blue tick displaying at the step.

    Step 3 is complete

  14. Tap the length of a pen or pencil very lightly over the sample to create a downward arch.

  15. Click Start.

    The test is complete when four blue ticks are displayed on the right side of the page.

    Test is complete

  16. Depending on your version of DB Admin, do one of the following:

    • If Calculate is displayed, click Calculate. A new page is displayed showing all calculated values.

      If Bend values are too low, an error message is displayed. To add the correct Bend values, do a manual Bend test.
    • If Next is displayed, click Next. The calculated values display in the application after you click Finish.


  17. On the Results page, click:

    1. Export JSON to export the results in JSON format.

    2. Recalculate to recalculate the results.

    3. Save to save the data.

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