Late Stage Damage in G30-500/PMR-15 Laminates

by Wieslaw K. Binienda, Univ of Akron, Akron, United States,
Anping Hong, Univ of Akron, Akron, United States,
Andrew Gyekenyesi, Univ of Akron, Akron, United States,
John Hemann, Univ of Akron, Akron, United States,



Document Type: Proceeding Paper

Part of: Engineering, Construction, and Operations in Space IV

Abstract:

Damage progression has been studied experimentally under tension using [0₂/90₆]_s and [0₄/90₄]_s coupons. Strain Energy Release Rate (SERR) coefficients have been calculated for a Characteristic Damage State (CDS) consisting transverse cracks, 0? splits and 0/90 interface delamination for G30-500/PMR-15 cross-ply laminates using three dimensional Finite Element Analysis (FEA). The late stage cracking toughness of the material has been obtained by correlation of the experimental results for 0/90 interface delamination with the numerical SERR coefficients.

Subject Headings: Laminated materials | Finite element method | Composite materials | Fiber reinforced composites | Strength of materials | Material properties | Strain rates

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