Accession Number : ADA117059
Title : Evaluation of Fracture Criteria for Ship Steels and Weldments.
Descriptive Note : Final rept.,
Corporate Author : LEHIGH UNIV BETHLEHEM PA
Personal Author(s) : Pense,Alan W
PDF Url : ADA117059
Report Date : Jan 1981
Pagination or Media Count : 53
Abstract : The purpose of this report is to review in the light of currently existing data the fracture-toughness guidelines for welded ship hull steels first proposed in 1974. The essence of the guidelines was an NDT temperature requirement of 0 deg F for steel used in primary load-carrying members and an NDT temperature requirement of 20 deg F for steels used in secondary load carrying members. A subsidiary requirement for primary members was a dynamic tear energy in 5/8 in. specimens, depending on steel strength, of 250 to 500 ft-lb. at 75 deg F. Crack-arrest materials would be required to have a dynamic tear energy in 5/8 in. specimens, again depending on steel strength, of 600 to 800 ft-lb. at 32 deg F.
Descriptors : *Steel, *Weldments, *Ships, *Ship hulls, *Fracture(Mechanics), *Test and evaluation, Welds, Toughness, Strain rate, Cracks, Arresting(Process), Transition temperature, Charpy impact tests, Strength(Mechanics)
Subject Categories : Metallurgy and Metallography
Couplers, Fasteners, and Joints
Test Facilities, Equipment and Methods
Distribution Statement : APPROVED FOR PUBLIC RELEASE