Investigation of Modeling of Damage Growth in Composite Laminates

Damage initiation and growth has been studied in several material systems and two notched geometries, revealing generic characteristics of damage development and its relationship to microstructure. Stress redistribution has been studied with photoelastic methods and simulated analytically. Adiabatic...

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Bibliographic Details
Main Authors: Reifsnider, K, Stinchcomb, W W, Bakis, C E, Yih, H R, Shalev, Doron
Format: Report
Language:English
Subjects:
ADIABATIC CONDITIONS
BOUNDARY LAYER
COMPOSITE MATERIALS
Containers and Packaging
DAMAGE
DISTRIBUTION
DYNAMIC LOADS
GROWTH(GENERAL)
LAMINATES
Mechanics
MICROSTRUCTURE
PE61102F
PHOTOELASTICITY
STRESSES
THERMOELASTICITY
WUAFOSR2302B2
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Summary:Damage initiation and growth has been studied in several material systems and two notched geometries, revealing generic characteristics of damage development and its relationship to microstructure. Stress redistribution has been studied with photoelastic methods and simulated analytically. Adiabatic thermoelastic methods for strain field analysis under dynamic loading have been developed and the first micromechanical formulation of that problem has been achieved. A formulation of the singular stress problem in the boundary layer near a hole in composite laminates has been completed. And a brief study of the applicability of chaos theory to damage development representation was conducted. A critical element model of remaining strength and life of notched composite laminates has been constructed and validated.