Compressive Behavior of Plates Fabricated from Glass Filaments and Epoxy Resin.
Abstract
Young's modulus, buckling stress, and maximum strength were determined experimentally for 15 glass-filament- reinforced plastic plates of laminated isotropic construction containing either 12 or 18 laminae. Experimentally determined values of Young's modulus and buckling stress are in reasonable agreement with theoretical calculations. The stress-unit-shortening curve for the plates in the post-buckling region can adequately be predicted by conventional theory for metallic plates. However, lamination occurs at loads below the theoretical compressive strength predicted by an effective width formula that is often used to predict the maximum strength of metal plates. In using an effective width formula to predict maximum strength, it was assumed that failure occurs when the edge stress of the buckled plate equals the delamination stress of the unbuckled compression test specimen. On the basis of strength and modulus data obtained in this study, it is shown that the glass-epoxy composite is competitive as a lightweight material with aluminum in applications where plate buckling strength or crushing strength is the design criterion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1967
- Accession Number
- ADA307042
Entities
People
- George W. Zender
- John G. Davis Jr.
Organizations
- Langley Research Center