SEDL / STP / STP338-EB / STP44467S

An Aluminum Sandwich Panel Fatigue Test Under Mach-2.4 Cruising Conditions

Buntin, W. D.
Senior Structures Engineer and Senior Test Engineer, General Dynamics/Fort Worth, Fort Worth, Tex

Love, T. S.
Senior Structures Engineer and Senior Test Engineer, General Dynamics/Fort Worth, Fort Worth, Tex

Pages: 14    Published: Jan 1963

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Abstract

Progress has been made in recent years in studying the effects of aerodynamic heating, which is a relatively new factor that must be accounted for in designing and testing aircraft structures. A great deal of effort has been spent to develop analytical methods that include the effects of elevated temperature. Most such methods, applicable to full-scale structures, are approximations at best and make no accounting for strength degradation due to transient conditions that vary with time. Therefore testing that must include time-dependent cyclic loads as well as static loads for maximum conditions continues to be a primary tool of the structures engineer in evaluating structures designed for sustained supersonic flight.