Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Printing Office's Federal Digital System website; (3) the federal government Internet portal; or (4) a web search conducted using a commercial search engine such as
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)
Mathematical analysis
Stress intensity factors

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

Science and Technology Highlights

See a sampling of the latest scientific, technical and engineering information from NTIS in the NTIS Technical Reports Newsletter

Acrobat Reader Mobile    Acrobat Reader