Open Hole and Post-impact Compression Fatigue of Stitched and Unstitched Carbon/epoxy Composites
Title | Open Hole and Post-impact Compression Fatigue of Stitched and Unstitched Carbon/epoxy Composites PDF eBook |
Author | |
Publisher | |
Pages | 46 |
Release | 1990 |
Genre | |
ISBN |
Composite Materials
Title | Composite Materials PDF eBook |
Author | Glenn C. Grimes |
Publisher | ASTM International |
Pages | 465 |
Release | 1992 |
Genre | Composite materials |
ISBN | 0803114265 |
Annotation In papers presented at the Tenth ASTM Conference on Composite Materials, held in San Francisco, April 1990, important composite materials technical issues are discussed in eight sections: compression test methodology analysis and development; general test methodology analysis and development; material mechanical properties and failure criteria; advanced materials analysis and test; analysis, test, and certification of structure; quality assurance and process control; interlaminar fracture analysis and test; and damage, flows, and repair. Member price, $95. Annotation copyrighted by Book News, Inc., Portland, OR.
Open Hole and Post-Impact Compression Fatigue of Stitched and Unstitched Carbon/Epoxy Composites
Title | Open Hole and Post-Impact Compression Fatigue of Stitched and Unstitched Carbon/Epoxy Composites PDF eBook |
Author | National Aeronautics and Space Administration (NASA) |
Publisher | Createspace Independent Publishing Platform |
Pages | 44 |
Release | 2018-07-09 |
Genre | |
ISBN | 9781722461010 |
The performance is studied of a stitched uniweave fabric composite and that of a toughened tape composite. The effects of stitching on compression fatigue life are addressed. Post impact compression fatigue and open hole fatigue tests were run on an AS4/3501-6 uniweave with stitching and a toughened IM7/8551-7 tape without stitching. Stitching was found to increase the thickness and consequently the weight of the composite material. The two materials were compared on an equal carbon content basis as well as on an equal weight basis. The excess thickness in the stitched uniweave composite was responsible for the lower fatigue life, on an equal carbon basis, compared to the toughened resin tape composite. Comparison of fatigue lives on an equal carbon content basis indicated that puncture or crimp type damage from stitching has very little effect on compression failure. Post impact fatigue test showed that although the damage area in the stitched uniweave composite was twice that of the toughened tape composite, the fatigue lives of the stitched composite were significantly longer than those of the toughened composite. Thus, it appears that the increase in thickness from stitching is much more of a penalty than crimped fibers or puncture type damage from stitching. Portanova, M. A. and Poe, C. C., Jr. and Whitcomb, John D. Langley Research Center RTOP 505-63-01-05...
Proceedings of the 11th International Conference on Composite Materials
Title | Proceedings of the 11th International Conference on Composite Materials PDF eBook |
Author | Murray L. Scott |
Publisher | Woodhead Publishing |
Pages | 976 |
Release | 1997 |
Genre | Technology & Engineering |
ISBN | 9781855733558 |
Scientific and Technical Aerospace Reports
Title | Scientific and Technical Aerospace Reports PDF eBook |
Author | |
Publisher | |
Pages | 542 |
Release | 1995 |
Genre | Aeronautics |
ISBN |
Composite Materials
Title | Composite Materials PDF eBook |
Author | Erian A. Armanios |
Publisher | ASTM International |
Pages | 570 |
Release | 1997 |
Genre | Composite materials |
ISBN | 0803124112 |
Small Fatigue Cracks
Title | Small Fatigue Cracks PDF eBook |
Author | K.S. Ravichandran |
Publisher | Elsevier |
Pages | 511 |
Release | 1999-09-30 |
Genre | Technology & Engineering |
ISBN | 0080569706 |
This book contains the fully peer-reviewed papers presented at the Third Engineering Foundation Conference on Small Fatigue Cracks, held under the chairmanship of K.S. Ravichandran and Y. Murakami during December 6-11, 1998, at the Turtle Bay Hilton, Oahu, Hawaii. This book presents a state-of-the-art description of the mechanics, mechanisms and applications of small fatigue cracks by most of the world's leading experts in this field. Topics ranging from the mechanisms of crack initiation, small crack behavior in metallic, intermetallic, ceramic and composite materials, experimental measurement, mechanistic and theoretical models, to the role of small cracks in fretting fatigue and the application of small crack results to the aging aircraft and high-cycle fatigue problems, are covered.