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Reliability analysis of structures under periodic proof tests in serviceA reliability analysis of structures subjected to random service loads and periodic proof tests treats gust loads and maneuver loads as random processes. Crack initiation, crack propagation, and strength degradation are treated as the fatigue process. The time to fatigue crack initiation and ultimate strength are random variables. Residual strength decreases during crack propagation, so that failure rate increases with time. When a structure fails under periodic proof testing, a new structure is built and proof-tested. The probability of structural failure in service is derived from treatment of all the random variables, strength degradations, service loads, proof tests, and the renewal of failed structures. Some numerical examples are worked out.
Document ID
19760062790
Document Type
Reprint (Version printed in journal)
Authors
Yang, J.-N. (George Washington University Washington, D.C., United States)
Date Acquired
August 8, 2013
Publication Date
September 1, 1976
Publication Information
Publication: AIAA Journal
Volume: 14
Subject Category
STRUCTURAL MECHANICS
Funding Number(s)
CONTRACT_GRANT: NSG-1099
Distribution Limits
Public
Copyright
Other