Fatigue Evaluation of Composite-reinforced, Integrally Stiffened Metal Panels: Summary |
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AF-126 adhesive all-metal panel assuming the metal bonded with AF-126 C. E. Dumesnil composite-metal system Composite-Reinforced Panel Conventional fatigue COUPON SPECIMEN crack growth rates CRACK LENGTH 2a cycles to failure design criteria design limit load EA-927R adhesive elevated-temperature-cure adhesive Epoxy EVALUATION OF COMPOSITE-REINFORCED fail-safe behavior FAILURE AFTER METAL fatigue and fail-safe fatigue coupons Fatigue Crack FATIGUE EVALUATION FATIGUE LIFE CURVE fatigue loading fatigue tests glass-reinforced coupons graphite graphite-reinforced coupons graphite/epoxy increasing crack length integrally formed INTEGRALLY STIFFENED METAL integrally stiffened panels integrally-formed panel integrally-stiffened metal panel kg/m³ kilograms LIMIT STRESS METAL CRACKED METAL FAILURE METAL STRESS NASA number of cycles outer face sheet outer sheets panel concept Performing Organization Physical Quantity rate of crack reinforcement greatly reduced Report room-temperature-cure adhesive SI Unit STIFFENED METAL PANELS stiffness ratio stress concentration factor stress levels structural concept System of Units test section total limit load U. S. Customary Units weight