41 00... Assessment Of Scratches On Carbon Components
Special tools required:
- 2 355 746
- 83 30 2 355 745
Perform the assessment of scratches as follows:
| Result of visual inspection: | Solution | ||
|---|---|---|---|
| Step 1: | Visual inspection of damaged area | protruding carbon fibres | Replace component. |
| no protruding carbon fibres (glass fibres and threads of polyethylene may protrude) | continue with step 2 | ||
| Step 2: | Analysis of angle between direction of scratch and direction of fibre | 15°- 90° | continue with step 3 |
| 0°- 15° | continue with step 5 | ||
| Step 3: | Determine depth of scratch | Depth <0.2 mm | Do not replace component. |
| Depth >0.2 mm | continue with step 4 | ||
| Step 4: | Determine length of scratch | Length: <10 mm | Do not replace component. |
| Length: >10 mm | Replace component. | ||
| Step 5: | Determine depth of scratch | Depth <0.2 mm | Do not replace component. |
| Depth >0.2 mm | continue with step 6 | ||
| Step 6: | Determine length of scratch | Length: <40 mm | Do not replace component. |
| Length: >40 mm | Replace component. |
Determining depth of scratch:
The set of special tools 83 30 2 355 745 is needed to determine the depth of the scratch.
The tool can only be used on a flat surface.
Gauge 2 355 746 has a test probe (1) with a height of 0.2 mm.
If the test probe sits up at the deepest point of the scratch (figure A), it can be moved to the left and right. The scratch is less than 0.2 mm deep.
If the test probe dips so deeply into the scratch that the gauge sits flat (figure B), the scratch is deeper than 0.2 mm and the part is damaged.
You can find the following steps in the table.