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Participants utilization of the fracture toughness methods
| Laboratory | VAMAS round-robin tests | Other tests | ||
|---|---|---|---|---|
| IS | IF | SEPB | ||
| NASA-Lewis | a | d | a | aCN (Chevron Notch) |
| Norton | a | b | b | |
| Allied Signal (Garrett) | d | d | d | aCN (Chevron Notch) |
| Worcester | b | b | a | |
| Polytechnic | ||||
| NIST | a | a | c | bDCB (Double Cantilever Beam) |
| bAM-DCB (Applied Moment DCB) | ||||
Test method already in routine usage, and is preferred.
Test method already in routine usage.
Test method will be used.
Test method not ordinarily used.
