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Accession Number ADA578377
Title Analysis of a Novel Fracture Toughness Testing Geometry.
Publication Date Dec 2012
Media Count 30p
Personal Author B. M. Love
Abstract Computational analyses were conducted on novel fracture toughness specimens known as butterfly specimens, which were developed at the U.S. Army Research Laboratory. A three-dimensional (3-D), J-integral technique was established and validated against published results for a simple geometry. The technique was then used to generate a stress intensity factor function for a range of geometries for the butterfly specimen. A displacement-based description of the load on the specimen was developed that removes the need to accurately determine the specimen/platen frictional effects, and 3-D analyses were conducted to elucidate specimen thickness effects and their implications on surface measurements that are taken during experimental studies.
Keywords Fracture(Mechanics)
Geometry
Mathematical analysis
Stress intensity factors
Toughness


 
Source Agency Non Paid ADAS
NTIS Subject Category 72B - Algebra, Analysis, Geometry, & Mathematical Logic
46E - Structural Mechanics
Corporate Author Army Research Lab., Aberdeen Proving Ground, MD. Weapons and Materials Research Directorate.
Document Type Technical report
Title Note Final rept. Feb 2012-Jul 2012.
NTIS Issue Number 1321
Contract Number N/A

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