Table 1 Electrical conductivity test results for plain weave fabric-based carbon/epoxy laminate
Measurement direction (IDa) | Specimen dimensions | Silver paint | No. of specimens | Av. of electrical conductivity | Standard deviation | Coefficient of variation |
|---|---|---|---|---|---|---|
- | mm X mm X mm | - | - | S/m | S/m | % |
In-plane 00 (IP0-Xd) | 10 X 10 X 2 | No | 2 | 5488 |  ± 394 | 7 |
20 X 10 X 2 | 3 | 5514 |  ± 704 | 13 | ||
30 X 10 X 2 | 3 | 7056 |  ± 1370 | 20 | ||
In-plane 900 (IP90-Xd) | 10 X 10 X 2 | 2 | 5848 |  ± 439 | 8 | |
20 X 10 X 2 | 3 | 5804 |  ± 463 | 8 | ||
30 X 10 X 2 | 3 | 6104 |  ± 203 | 3 | ||
TTT (TTT-Xd) | 10 X 10 X 2 | 2 | 14.8 |  ± 2.2 | 15 | |
20 X 20 X 2 | 3 | 13.6 |  ± 1.6 | 12 | ||
30 X 30 X 2 | 3 | 10.5 |  ± 0.7 | 7 | ||
In-plane 00 (IP0-Xc) | 10 X 10 X 2 | Yes | 2 | 6171 |  ± 437 | 7 |
20 X 10 X 2 | 3 | 7206 |  ± 373 | 5 | ||
30 X 10 X 2 | 3 | 8012 |  ± 982 | 12 | ||
In-plane 900 (IP0-Xc) | 10 X 10 X 2 | 2 | 6171 |  ± 437 | 7 | |
20 X 10 X 2 | 3 | 7138 |  ± 511 | 7 | ||
30 X 10 X 2 | 3 | 7290 |  ± 635 | 9 | ||
TTT (TTT-Xc) | 10 X 10 X 2 | 3 | 22.9 |  ± 0.5 | 2 | |
20 X 20 X 2 | 4 | 23.0 |  ± 1.0 | 4 | ||
30 X 30 X 2 | 4 | 18.5 |  ± 0.7 | 4 |