24th Congress of International Council of the Aeronautical Sciences, 29 August-3, September 2004, Yokohama, Japan
Paper ICAS 2004-5.9.1 (I.L.)

EFFECTS OF PHYSICAL AND CHEMICAL AGING ON STRENGTH AND BEHAVIOR OF CARBON/BMI COMPOSITES FOR SST STRUCTURES

C. Marais, H. Katoh*
Department of Materials and Composite Systems, ONERA, France; *Advanced Composite Evaluation Technology Center, Institute of Space Technology & Aeronautics, JAXA, Japan

Keywords: organic composites, aging, behavior, damage, cracking, oxidation, protection.

For isothermal conditions of composite laminates, there exits different outward signs of aging close to free surfaces and in the volume of the composite. Surface aging is induced by thermo-oxidation which gives rise to microcracking and acts on failure stresses of the composite. In the bulk of the composite, volume aging primarily modifies the mechanical behavior.

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