NEW MODEL MATERIAL FOR THREE-DIMENSIONAL STRESS ANALYSIS

This paper describes the manufacturing of a family of epoxies, the Poisson's ratio of which at the critical temperature is on the order of0.4. The variation of Youngs modulus, Poissons ratio, shear fringe value, and critical temperature as a function of the amount of hardener the curing temperature' and the curing time for a large range of these variables are presented as parametric curves. Previously, epoxies used in three-dimensional analysis have all shown a Poisson's ratio of about 0.5, indicating incompressibility. The new compressible material has two advantages: (1) it is closer to the common engineering materials and (2) strains can be measured at interior points to supplement photoelastic analysis, or strain measurements can be used exclusively to obtain stresses throughout the body. /AUTHOR/

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Hasseem, H M
  • Durelli, A J
  • Parks, V J
• Publication Date: 0

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 368-373
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 3
  • Issue Number: 5
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Compressibility; Concrete curing; Epoxy resins; Mathematical models; Modulus of elasticity; Photoelasticity; Poisson ratio; Strain (Mechanics); Structural analysis; Temperature; Time
• Old TRIS Terms: Poissons ratio; Strains
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00126510
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 14 1976 12:00AM