Download or read book Long term Environmental Effects and Flight Service Evaluation of Composite Materials written by Howard Benson Dexter and published by . This book was released on 1987 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Effects on Composites for Aircraft written by Richard Alan Pride and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Effects on Composites for Aircraft written by Richard A. Pride and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flight Service Environmental Effects on Composite Materials and Structures written by and published by . This book was released on 1992 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: NASA Langley and the U.S. Army have jointly sponsored programs to assess the effects of realistic flight environments and ground-based exposure on advanced composite materials and structures. Composite secondary structural components were initially installed on commercial transport aircraft in 1973; secondary and primary structural components were installed on commercial helicopters in 1979; and primary structural components were installed on commercial aircraft in the mid-to-late 1980's. Over 5.3 million total component flight hours have been accumulated on 350 composite components since 1973. Service performance, maintenance characteristics, and residual strength of numerous composite components are reported. In addition to data on flight components; 10-year ground-based exposure test results on material coupons are reported. Comparisons between flight and ground-based environmental effects for several composite material systems are also presented. Test results indicate excellent in-service performance with the. composite components during the 15 year evaluation period. Good correlation between ground-based material performance and operational structural performance has been achieved.
Download or read book Environmental Effects on Advanced Composite Materials written by ASTM-ASME-MPC Joint Committee on Effect of Temperature on the Properties of Metals. Aerospace Panel and published by ASTM International. This book was released on 1976 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flight Service Evaluation of Composite Components on Bell 206L and Sikorsky S 76 Helicopters written by Donald J. Baker and published by . This book was released on 1983 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress on two programs to evaluate composite structural components in flight service on commercial helicopters is described. Thirty-six ship sets of composite components that include the litter door, baggage door, forward fairing, and vertical fin have been installed on Bell Model 206L helicopters that are operating in widely different climatic areas. Four horizontal stabilizers and ten tail rotor spars that are production components on the S-76 helicopter will be tested after prescribed periods of service to determine the effects of the operating environment on their performance. Concurrent with the flight evaluation, specimens from materials used to fabricate the components are being exposed in ground racks and tested at specified intervals to determine the effects of outdoor environments. Results achieved from 14,000 hours of accumulated service on the 206L components, tests on a S-76 horizontal stabilizer after 1600 hours of service, tests on a S-76 tail rotor spar after 2300 hours service, and two years of ground based exposure of material coupons are reported. (Author).
Download or read book environmental effects on advanced composite materials written by Christian JL. and published by ASTM International. This book was released on 1976 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flight Service Evaluation of Composite Helicopter Components written by George H. Mardoian and published by . This book was released on 1990 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1990 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Five Year Ground Exposure of Composite Materials Used on the Bell Model 206l Flight Service Evaluation written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-07 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of the results of a U.S. Army/NASA-Langley sponsored research program to establish the long term-term effects of realistic ground based exposure on advanced composite materials is presented. Residual strengths and moisture absorption as a function of exposure time and exposure location are reported for four different composite material systems that were exposed for five years on the North American Continent. Baker, Donald J. Langley Research Center...
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Accelerated Environmental Testing of Composite Materials written by Roger Vodicka and published by . This book was released on 1998 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite materials are found to lose mechanical [properties?] on exposure to aircraft operating environments. This is mainly due to absorption of moisture from humid air by the matrix material. Composite materials are extensively used by the RAAF for both major structural components on thbe F/A-18 and for bonded repairs and doublers. The performance of these materials under long-term environmental exposure is an important aspect of both aircraft certification and in the understanding of how the components will age. This report provides a broad overview of environmental effects on composite materials and methods which may be used to predict their long-term behaviour. The use of accelerated testing environments in the laboratory is an attractive proposition as it enables tests to be carried out in reduced time frames. A number of accelerated testing methodologies and their implications are outlined here. Accelerated testing can be carried out with confidence if the exposure conditions are representative and the failure modes of the materials during mechanical tests reflect those seen in service.
Download or read book NASA Reference Publication written by and published by . This book was released on 1977 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Composite Airframe Structures written by Michael Chun-Yung Niu and published by . This book was released on 1992 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technology 2000 written by and published by . This book was released on 1991 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Effects on Composite Materials written by George S. Springer and published by . This book was released on 1981 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
