Dynamic Fracture Toughness Parameters for HY-80 and HY-130 Steels and their Weldments
Abstract
Lower bound dynamic fracture toughness parameters for HY-80 and HY- 130 steel and their weld metals are identified. Specific values of the parameters K sub Id and K sub Im obtained from direct measurements are reported together with estimates inferred from the large body of Charpy energy, nil ductility transition temperature and dynamic tear energy measurements. The emphasis is on reasonable lower bound values at 30 F, the lowest anticipated service temperature, for use in elastodynamic analyses of crack growth initiation, propagation, and arrest in ship structures. For these conditions, it has been found that the ratio K sub Id/RHO sub Y is approximately sq root of 1 in. Consequently, HY-80 plate appears to be substantially more resistant to fracture under dynamic loading than are the other three grades examined.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1979
- Accession Number
- ADA085194
Entities
People
- G. T. Hahn
- M. F. Kanninen
Organizations
- Battelle Memorial Institute