Probabilistic Evaluation of Uncertainties and Risks in Aerospace Components PDF Download
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Author: A. R. Shah
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
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Book Description
Author: A. R. Shah
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722602260
Category :
Languages : en
Pages : 50
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Book Description
This paper summarizes a methodology developed at NASA Lewis Research Center which computationally simulates the structural, material, and load uncertainties associated with Space Shuttle Main Engine (SSME) components. The methodology was applied to evaluate the scatter in static, buckling, dynamic, fatigue, and damage behavior of the SSME turbo pump blade. Also calculated are the probability densities of typical critical blade responses, such as effective stress, natural frequency, damage initiation, most probable damage path, etc. Risk assessments were performed for different failure modes, and the effect of material degradation on the fatigue and damage behaviors of a blade were calculated using a multi-factor interaction equation. Failure probabilities for different fatigue cycles were computed and the uncertainties associated with damage initiation and damage propagation due to different load cycle were quantified. Evaluations on the effects of mistuned blades on a rotor were made; uncertainties in the excitation frequency were found to significantly amplify the blade responses of a mistuned rotor. The effects of the number of blades on a rotor were studied. The autocorrelation function of displacements and the probability density function of the first passage time for deterministic and random barriers for structures subjected to random processes also were computed. A brief discussion was included on the future direction of probabilistic structural analysis. Shah, A. R. and Shiao, M. C. and Nagpal, V. K. and Chamis, C. C. Glenn Research Center RTOP 505-63-53...
Author:
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ISBN:
Category : Reliability (Engineering)
Languages : en
Pages : 88
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Book Description
Contains references to documents in the NASA Scientific and Technical (STI) Database.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652
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Book Description
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.
Author: Satya N. Atluri
Publisher: AIAA
ISBN: 9781600863998
Category : Aerodynamics
Languages : en
Pages : 580
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 492
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Book Description
Author: E. R. Krueger
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 288
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Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1828
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Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 436
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Book Description
Author: Longbiao Li
Publisher: BoD – Books on Demand
ISBN: 1789847923
Category : Technology & Engineering
Languages : en
Pages : 212
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Book Description
This book introduces safety and risk analysis methods for aircraft and aero-engines, design approaches for increasing safety and decreasing risk during operation, air traffic controllers’ attitudes to mistakes hazards, theories and models of human error occurrence during aircraft maintenance processes, and damage and failure analysis for composite structures.
