STP602: Program Definition and Preliminary Results of a Long-Term Evaluation Program of Advanced Composites for Supersonic Cruise Aircraft Applications

    Kerr, JR
    Senior metallurgist and chief, Materials and Processes Engineering, Convair Division of General Dynamics Corporation, San Diego, Calif.

    Haskins, JF
    Senior metallurgist and chief, Materials and Processes Engineering, Convair Division of General Dynamics Corporation, San Diego, Calif.

    Stein, BA
    Assistant head of Materials Research Branch, National Aeronautics and Space Administration, Langley Research Center, Hampton, Va.

    Pages: 20    Published: Jan 1976


    Abstract

    Advanced composites will play a key role in the development of the technology required for the design and fabrication of future supersonic vehicles. However, implementation of the material into vehicle usage is contingent upon accelerating the demonstration of service capacity and design technology. Because of the added material complexity and lack of extensive service data, laboratory replication of the flight service will provide the most rapid method of documenting the airworthiness of advanced composite systems. A program is in progress to determine the time-temperature-stress capabilities of several high-temperature composite materials. Tests included in this study are thermal aging, ambient aging, fatigue, creep, fracture, tensile, and real-time flight simulation exposure. The program has two parts. The first includes all the material property determinations and aging and simulation exposures up through 10 000 h. The second continues these tests up to 50 000 cumulative h. The program is currently in the midst of the 10 000-h phase of the study. Some of the results obtained to date and the status of the various tests are discussed in this and a following paper.

    Keywords:

    composite materials, thermal degradation, aging tests, fatigue tests, creep properties, tensile properties, shear properties, fracture properties, flight simulation, boron, graphite, epoxy resins, resins, aluminum, supersonic aircraft


    Paper ID: STP27777S

    Committee/Subcommittee: D30.04

    DOI: 10.1520/STP27777S


    CrossRef ASTM International is a member of CrossRef.