Evaluation of frame/skin bond strength and durability for advanced composite fuselage crown structures

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:89863

Pointer, R; Awerbuch, J; Wang, A S.D. ^[1]

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1. Drexel Univ., Philadelphia, PA (United States). Dept. of Mechanical Engineering and Mechanics

An experimental and analytical investigation was performed to characterize damage initiation and progression along the frame/skin interface of the aft crown panel fuselage section in a commercial aircraft. The effect of manufacturing procedures on damage initiation and failure processes was addressed by evaluating five different frame/skin assemblies. Crack initiation and progression as a function of applied load and the local failure events were monitored and recorded using a high magnification closed circuit television system. For selected specimens, acoustic emission was monitored, X-radiography was performed, and fracture surface morphologies were examined via the scanning electron microscope. In addition, a pilot program on the fatigue behavior of the frame/skin test. elements has been conducted. The Mode I and Mode II fracture toughness of the skin and braided materials were also determined using the double cantilever beam and the end notch flexure specimen configurations. A finite element code (VISOCRACK) was employed for simulating the types of failure observed experimentally and to predict failure initiation.

• OSTI ID: 89863
• Report Number(s): CONF-9409291-; ISBN 1-56676-220-0; TRN: IM9536%%293
• Resource Relation: Conference: 9. technical conference of the American Society for Composites, Newark, DE (United States), 20-22 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the American Society for Composites: Ninth technical conference; PB: 1319 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
33 ADVANCED PROPULSION SYSTEMS
COMPOSITE MATERIALS
MECHANICAL PROPERTIES
CARBON FIBERS
EPOXIDES
AIRCRAFT COMPONENTS
INTERFACES
CRACK PROPAGATION
BONDING
ACOUSTIC EMISSION TESTING
X-RAY RADIOGRAPHY
FRACTURES
SCANNING ELECTRON MICROSCOPY
FAILURES
COMPUTERIZED SIMULATION
FINITE ELEMENT METHOD