Published February 1988 | Version v1
Report Metadata-only

Viscoplastic-dynamic analysis of small-scale fracture tests to obtain crack arrest toughness values for PTS conditions

Creators

  • 1. Southwest Research Institute, San Antonio, TX (USA)

Description

Reliable predictions of crack arrest at the high upper shelf toughness conditions involved in postulated pressurized thermal shock (PTS) events require procedures beyond those utilized in conventional fracture mechanics treatments. To develop such a procedure, viscoplastic-dynamic fracture mechanics finite element analyses, viscoplastic material characterization testing, and small-scale crack propagation and arrest experimentation are being combined in this research. The approach couples SwRI's viscoplastic-dynamic fracture mechanics finite element code VISCRK with experiments using duplex 4340A533B steel compact specimens. The experiments are simulated by VISCRK computations employing the Bodner-Partom viscoplastic constitutive relation and the nonlinear fracture mechanics parameter T. The goal is to develop temperature-dependent crack arrest toughness values for A533B steel. While only room temperature K/sub Ia/ values have been obtained so far, these have been found to agree closely with those obtained from wide plate tests

Additional details

Publishing Information

Imprint Title
Proceeding of the US Nuclear Regulatory Commission fifteenth water reactor safety information meeting: Volume 2
Journal Page Range
p. 93-112.
Report number
NUREG/CP--0091-Vol.2

Conference

Title
15. water reactor safety information meeting.
Dates
26-30 Oct 1987.
Place
Gaithersburg, MD (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
20018086
Subject category
S36: MATERIALS SCIENCE; S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
COMPUTERIZED SIMULATION; CRACK PROPAGATION; FRACTURE MECHANICS; FRACTURE PROPERTIES; MATERIALS TESTING; PLASTICITY; PRESSURE VESSELS; PRESSURIZATION; REACTOR MATERIALS; STEEL-MNNIMO; THERMAL SHOCK; V CODES; VISCOSITY
Descriptors DEC
ALLOYS; CARBON ADDITIONS; COMPUTER CODES; CONTAINERS; IRON ALLOYS; IRON BASE ALLOYS; LOW ALLOY STEELS; MANGANESE ALLOYS; MATERIALS; MECHANICAL PROPERTIES; MECHANICS; MOLYBDENUM ADDITIONS; NICKEL ADDITIONS; SIMULATION; STEELS; TESTING