Long Term Monitoring of an Aircraft Structure During a Full Scale Fatigue Test.
, 2014 In the paper a technique for qualitative assessment of fatigue crack growth monitoring is presented, utilizing guided elastic waves generated by sparse PZT piezoelectric transducers network in the pitch catch configuration. The Damage Indices used for the inference carries marginal signal information content in order to decrease their sensitivity with ...
Dragan, Krzysztof +3 more
openaire +1 more source
Aeronautical engineering: A continuing bibliography, supplement 122 [PDF]
This bibliography lists 303 reports, articles, and other documents introduced into the NASA scientific and technical information system in April ...
core +1 more source
Application of composites to the selective reinforcement of metallic aerospace structures [PDF]
The use of composite materials to selectively reinforce metallic structures provides a low-cost way to reduce weight and a means of minimizing the risks usually associated with the introduction of new materials.
Brooks, W. A., Jr. +2 more
core +1 more source
Large-Scale Advanced Prop-Fan (LAP) blade design [PDF]
This report covers the design analysis of a very thin, highly swept, propeller blade to be used in the Large-Scale Advanced Prop-Fan (LAP) test program.
Sullivan, William E. +2 more
core +1 more source
Ground test experience with large composite structures for commercial transports [PDF]
The initial ground test of each component resulted in structural failure at less than ultimate design loads. While such failures represent major program delays, the investigation and analysis of each failure revealed significant lessons for effective ...
Bohon, H. L. +2 more
core +1 more source
Acoustics Division recent accomplishments and research plans [PDF]
The research program currently being implemented by the Acoustics Division of NASA Langley Research Center is described. The scope, focus, and thrusts of the research are discussed and illustrated for each technical area by examples of recent technical ...
Clark, L. R., Morgan, H. G.
core +1 more source
Aeronautical Engineering: A continuing bibliography, supplement 120 [PDF]
This bibliography contains abstracts for 297 reports, articles, and other documents introduced into the NASA scientific and technical information system in February ...
core +1 more source
Probabilistic fatigue methodology for six nines reliability [PDF]
Fleet readiness and flight safety strongly depend on the degree of reliability that can be designed into rotorcraft flight critical components. The current U.S. Army fatigue life specification for new rotorcraft is the so-called six nines reliability, or
Bartlett, F. D., Jr. +2 more
core +1 more source
Detection of structural deterioration and associated airline maintenance problems [PDF]
Airline operations involving the detection of structural deterioration and associated maintenance problems are discussed. The standard approach to the maintenance and inspection of aircraft components and systems is described.
Henniker, H. D., Mitchell, R. G.
core +1 more source
Aeronautical Engineering: A special bibliography with indexes, supplement 54 [PDF]
This bibliography lists 316 reports, articles, and other documents introduced into the NASA scientific and technical information system in January ...
core +1 more source