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Experience in Subsized Specimen Testing
註釋Several techniques are reviewed for obtaining fracture toughness, impact energy, or flow data from subsized specimens. These specimens are useful when there is insufficient material or space (e.g., reactor vessel surveillance programs) for larger, more conventionally sized specimens. Such specimens are useful in other situations where, because of the structural configuration, it is appropriate to use small specimens (e.g., fusion first wall structures). The data obtained from these specimens may be (1) correlated with actual structural response or the response of larger specimens, (2) compared with test results on similar sized specimens (useful in tracking shifts in material behavior), or (3) used to provide input to fracture models.