Book ChapterDOI
A Reliability Approach to the Fatigue of Structures
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In this paper, the authors investigate the effect of randomness on the behavior of a notched character when subjected to a RANDOM-STRESS history of NARROW-BAND CHARACTERISTICS.Abstract:
ANALYZING THE FATIGUE DAMAGE OF A NOTCHED SPECIMEN SUBJECTED TO A RANDOM-STRESS HISTORY OF NARROW-BAND CHARACTERISTICS, THE CRACK PROPAGATION FACTOR IS TREATED AS A HOMOGENEOUS RANDOM PROCESS REFLECTING STATISTICAL VARIATIONS OF MATERIAL PROPERTY WITHIN THE SPECIMEN. ON THE BASIS OF THE PROPOSED STATISTICAL-MECHANICAL MODEL OF FATIGUE FAILURE, INTO WHICH A CRACK PROPAGATION MODEL AND A FRACTURE CRITERION ARE INCORPORATED, STATISTICAL DISTRIBUTION OF FATIGUE LIFE IS PREDICTED WITH THE AID OF THE MONTE CARLO TECHNIQUE BY DIGITALLY SIMULATING THE STRESS HISTORY AND THE CRACK PROPAGATION FACTOR AS RANDOM PROCESSES. THE RESULTS INDICATE THAT THE SPACIAL RANDOMNESS IN MATERIAL PROPERTY CAN, AND IN FACT SHOULD BE CONSIDERED IN ORDER TO ACCOUNT FOR THE LARGER SCATTER OF FATIGUE LIFE OBSERVED IN THE EXPERIMENT PERFORMED UNDER THE CONDITIONS COMPATIBLE WITH THE ASSUMPTIONS USED IN THE ANALYSIS. /ASTM/read more
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Literature Review on Aircraft Structural Risk and Reliability Analysis
TL;DR: A literature review of the current approaches and methodologies that have been utilised in the area of structural risk and reliability analysis for aircraft structures and components is conducted in this article, which deals mainly with the probability of failure due to aircraft structural fatigue.
Journal ArticleDOI
The fatigue of aircraft structures
TL;DR: A review of the current procedures for fatigue design and for fatigue life estimation, substantiation and monitoring of aircraft structures is presented in this paper. Major gaps in the present state of knowledge are identified and further research directed towards filling these gaps is discussed.
Review of Methods and Approaches for the Structural Risk Assessment of Aircraft
TL;DR: In this article, the authors look at the published literature on methods and assumptions made in performing structural risk assessments on aircraft and find that the standard approach can produce an acceptable assessment of the probability of failure of an aircraft if care is taken in understanding what is being modelled and the assumptions on which the analysis is based.
Journal ArticleDOI
A strategy for periodic inspection based on defect growth
TL;DR: In this paper, a rational approach is developed for prediction of failure risk or probability of survival of structure components, where three possible failure modes during any given life cycle of a member of the population are derived and the combined total risk is determined as a function of time (or number of load applications).
Journal ArticleDOI
The History of Structural Fatigue Testing at Fishermans Bend Australia
TL;DR: A brief history of fatigue research at the Fishermans Bend Australia Defence Science and Technology Organisation (DSTO) facility from the early days in the 1940s when Mr. H.A. Wills, Head of the then Structures Division, foresaw with remarkable insight the emerging danger of fatigue in aircraft structures as mentioned in this paper.