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| Source | Non-aged condition | Aged condition | ||||||
|---|---|---|---|---|---|---|---|---|
| df | MS | F | P | df | MS | F | P | |
| Material type | 3 | 25.47 | 13.84 | < .001 | 3 | 23.20 | 23.32 | < .001 |
| Surface treatment type | 3 | 90.49 | 49.19 | < .001 | 3 | 128.73 | 129.39 | < .001 |
| Material × surface treatment type | 9 | 10.45 | 5.68 | < .001 | 9 | 3.64 | 3.66 | < .001 |
