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Mechanical property characterization and impact resistance of selected graphite/PEEK composite materials

Author
Baker, Donald J.
Published
Apr 1, 1991.
Physical Description
1 electronic document
Online Version

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Summary
To use graphite/PEEK material on highly curved surfaces requires that the material be drapable and easily conformable to the surface. The mechanical property characterization and impact resistance results are presented for laminates made from two types of graphite/PEEK materials that will conform to a curved surface. These laminates were made from two different material forms. These forms are: (1) a fabric where each yarn is a co-mingled Celion G30-500 3K graphite fiber and PEEK fiber; and (2) an interleaved material of Celion G30-500 3K graphite fiber interleaved with PEEK film. The experimental results from the fabric laminates are compared with results for laminates made from AS4/PEEK unidirectional tape. The results indicate that the tension and compression moduli for quasi-isotropic and orthotropic laminates made from fabric materials are at least 98 pct. of the modulus of equivalent laminates made from tape materials. The strength of fabric material laminates is at least 80 pct. of laminates made from tape material. The evaluation of the fabric material for shear stiffness indicates that a tape material laminate could be replaced by a fabric material laminate and still maintain 89 pct. of the shear stiffness of the tape material laminate.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19910015030.
Accession ID: 91N24343.
AVSCOM-TR-90-B-012.
NAS 1.15:102769.
NASA-TM-102769.
National Technical Specialists Meeting on Advanced Rotorcraft Structures; 25-27 Oct. 1988; Williamsburg, VA; United States.
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