Table 13 A partial summary of the relative effects of the factors and their interactions on the measured Indirect tensile strength (ITS) value with the CUP loading geometry.
Factor/interaction | Change from () to () | Relative effect on the value of ITS |
|---|---|---|
D | (−) → (+) | ↓ |
t | (−) → (+) | ↓ |
f c | (−) → (+) | ↑ |
α | (−) → (+) | ↑ |
D × f c | (−, +);(+,−) → (−,−);(−,−) | ↓ |
(+,+);(+,+) → (−, +);(+,−) | ↑ | |
t × f c | (−, +);(+,−) → (−,−);(−,−) | ↓ |
(+,+);(+,+) → (−, +);(+,−) | ↑ | |
α×f c | (−, +);(+,−) → (−,−);(−,−) | ↓ |
(+,+);(+,+) → (−, +);(+,−) | ↑ |