Determination of stress intensity factor in orthotropic composite materials using strain gages

✍ Scribed by A. Shukla; B.D. Agarwal; Bharat Bhushan

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 693 KB
• Volume: 32
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(89)90318-4

✦ Synopsis

Abtatract-A simple experimental procedure invoiving measurement of strain through strain gages, has been developed to determine mode I stress intensity factor in orthotropic composites. Theoretical equations are first developed for the strain Eeld in the vicinity of the crack tip in an orthotropic material. These equations are then critically evaluated to obtain the optimum location and orientation of the strain gages to be used for strain rn~s~erne~~.

Applicability of the procedure has been experimentally verified through measurements on a glass epoxy specimen.

[ 171 A. J. Rosakis and K. R. Chandre, On crack tip stress states and experimental evaluation of three dimensional effects.