Results 221 to 230 of about 233,302 (259)

A Generalization of Cumulative Damage

Journal of Basic Engineering, 1960
In the application of various damage accumulation hypotheses to shock and vibration problems, a pattern of results was observed. A plot of allowable response (for the largest of a sequence of excitations) versus the number of excitations in the sequence produced straight lines on log-log paper for each value of damping.
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Cumulative Damage Processes and Alertness of the Worker

IEEE Transactions on Reliability, 1976
A device which is exposed to the cumulative damage process due to the occurrence of shocks is considered. The life distribution of the device is obtained here. Damages occur to the device when the worker is not alert or the device is weak. Known results in counter theory are used to obtain results.
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Approaches to Cumulative Damage Analysis

Material Durability/Life Prediction Modeling: Materials for the 21st Century, 1994
Abstract It has long been established that the order of loading in fatigue can significantly affect the summation of cycle ratios at failure for many engineering metals and alloys, with many approaches to the treatment of the nonlinear aspects of cumulative fatigue damage having been developed.
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ON CUMULATIVE DAMAGE AND RELIABILITY OF COMPONENTS

1968
Abstract : Let T, X(t), and C denote the time to failure, the accumulated damage by time t, and the 'critical' damage. Let F be the distribution function of T. Let 'E' stand for the event of the component undergoing damage and (t sub n) denote the sequence of intervals of time between successive occurrences of 'E'.
B. P. Lientz, V. K. Murthy
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Shortcuts in Cumulative Damage Analysis

SAE Technical Paper Series, 1973
<div class="htmlview paragraph">The paper presents a method for shorter evaluation of the fatigue damage done by an irregular sequence of loads. The method looks first for the largest overall range from highest peak to lowest valley, then for the next largest overall range that interrupts the first range, and so on, down until a suitable fraction
H. O. Fuchs, Drew V. Nelson, M. A. Burke, T. L. Toomay   +3 more
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Cumulative Damage Theories and Application

Journal of the Structural Division, 1968
A NUMBER OF THE CUMULATIVE-DAMAGE THEORIES WHICH ARE CURRENTLY AVAILABLE HAVE BEEN REVIEWED. SIGNIFICANT ASSUMPTIONS REGARDING THE MANNER IN WHICH FATIGUE DAMAGE IS ASSUMEED TO OCCUR AT DIFFERENT STRESS LEVELS WHEN THESE STRESS LEVELS OCCUR ALONE AND WHEN THEY ARE MIXED ARE ALSO DELINEATED.
James E. Stallmeyer, William H. Walker
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Eigen-analysis of cumulative damage

Structural Safety, 2000
In this paper, the safety probability of a structure is estimated by considering the progressive weakening of the structure due to repetitive loading events. Using a finite number of structure states, with increasing damage amounts, the cumulative damage is described by a Markov chain.
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Prediction of cumulative fatigue damage

Journal of Materials Science, 1985
The life of a component subjected to a constant stress can be determined using the S-N diagram. Prediction of cumulative fatigue damage or fatigue life of a component subjected to a given stress sequence of varying amplitude is difficult, if not impossible.
Muhammad Aslam, Shaik Jeelani
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On the concept of cumulative fatigue damage

International Journal of Fracture, 1988
A general notion of the cumulative damage is introduced which accounts for the previous damage history and loading order effect. The dimensionless damage is specified in terms of a damage function containing a controlling damage variable, ψ, and material parameter, p.
D. Kujawski, F. Ellyin
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Cumulative Damage: Reliability and Maintainability

1983
A new cumulative damage model is described. It is shown how the major sources of variability present in cumulative damage combine in a natural manner to form the general structure of the model and how this structure plays a fundamental role in the assessment of the reliability and maintainability of a component of a structure.
F Kozin, JL Bogdanoff
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