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- will be developing coupons to test for stiffness, comparing sandwich coupons with laminate coupons.
- Use ASTM D7250 and ASTM D7249
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| Plies | Orientations of Laminate Plies | Core Direction |
|---|---|---|
| 2/felt/core/felt/2 | 45, -45 | ribbon parallel to 0 |
| 3/felt/core/felt/3 | 45, 0, -45 | ribbon parallel to 0 |
| 4/felt/core/felt/4 | 0, 45, -45, 90 | ribbon parallel to 0 |
| 5/felt/core/felt/5 | 0, 45, -45, 0, 90 | ribbon parallel to 0 |
Laminate Coupon Schedules: