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Values of tearing modulus (Tm) obtained from the different data sets (NM = not measurable at JQ; values in parentheses are calculated at Δa = 0.5 mm)
| Steel | Specimen type | Side-grooved? | Loading rate | Tm (MPa) | ||
|---|---|---|---|---|---|---|
|
| ||||||
| EDM slit | Fatigue precrack | Saw-cut | ||||
| T200 | CVN | Yes | Impact | 146.5 | 146.6 | 97.9 |
| Quasi-static | 129.4 | 121.4 | — | |||
| No | Impact | — | 143.4 | 109.4 | ||
| KLST | No | 127.3 | 108.4 | — | ||
| X65 | CVN | Yes | Impact | 385.8 | 354.9 | — |
| Quasi-static | NM (990.1) | NM (324.9) | — | |||
| KLST | No | Impact | NM (524.5) | NM (532.0) | — | |
