Development of an analytic key curve approach to drop tower J-R curve measurement

Technical Report · Sun Nov 30 23:00:00 EST 1986

OSTI ID:7225657

Joyce, J A; Hackett, E M

The report describes the development of a dramatically improved method for evaluating J-R curves from 3 point bend specimens tested in a drop tower at loading rates of 2.5 m/second. Aluminum absorbers are used to eliminate the initial transient shock and produce data records smooth enough for direct application of key curve methods. An analytic key curve method is used which eliminates the need for tests on blunt notched or subsize specimens allowing development of a J-R curve for each specimen tested. Results are presented on an A533B steel showing the resulting J-R curve elevation as a function of test rate in comparison with standard static tests.

• Research Organization: Naval Academy, Annapolis, MD; David W. Taylor Naval Ship Research and Development Center, Annapolis, MD (USA)
• OSTI ID: 7225657
• Report Number(s): NUREG/CR-4782; ON: TI87900405
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ALLOYS
CRACK PROPAGATION
DESTRUCTIVE TESTING
FRACTURE MECHANICS
FRACTURE PROPERTIES
IMPACT TESTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MECHANICS
STEEL-ASTM-A533
STEELS
TESTING