Accession Number:

ADA374056

Title:

Effects of Artificial Cracks and Poisson's Ratio Upon Photoelastic Stress Intensity Determination

Descriptive Note:

Corporate Author:

VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIENCE AND MECHANICS

Personal Author(s):

Report Date:

1974-11-01

Pagination or Media Count:

28.0

Abstract:

A series of stress freezing photoelastic experiments were performed with multiple replications upon edge cracked strips for three types of cracks in current use i Rectangular slots 0.152 mm wide, ii 1.59 mm wide slots terminating in a 30 degrees vee notch of approximately 0.025 mm root radius, and iii Natural cracks approximately 0.0025 mm root radius. Stress intensity results were compared with the Gross-Srawley Analysis in addition i was compared with Savins solution. It was concluded that ii and iii yield the same results but i was slightly higher. Both ii and iii were about 12 higher than the Gross-Srawley results. This is conjectured to be related to a Poissons Ratio Effect.

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE