Results 211 to 220 of about 233,302 (259)

Cumulative Damage in Composites

Journal of Engineering Materials and Technology, 1990
The problem of cumulative fatigue damage in composites is analyzed based upon the development of a phenomenological damage model. In this modeling, a damage function is defined based on the degradation of the residual stiffness and used to predict the remaining life of composite specimens subjected to dual stress level fatigue loading.
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Self-similarity of damage cumulation

Strength of Materials, 1985
The authors address the problem of damage cumulation or multiple failure in the study of the process of development of a system of flaws in the form of pores or small cracks which sometimes occur during irradiation of the material by high-energy particles.
L. R. Botvina, G. I. Barenblatt
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Probabilistic models of cumulative damage

Accident Analysis & Prevention, 1986
(1986). Probabilistic Models of Cumulative Damage. Journal of Quality Technology: Vol. 18, No. 2, pp. 142-143.
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On Cumulative Damage with Annealing

IEEE Transactions on Reliability, 1975
The cumulative damage model of Takacs is considered wherein damage is incurred by shocks and then decreases exponentially with time. The distribution of the total amount of damage and its mean, and the limiting distribution of the total amount of damage have been derived. This tutorial note gives 2 examples.
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Cumulative fatigue damage

Materials Science and Engineering: A, 1988
Abstract In this paper the problem of cumulative fatigue damage is considered. On the basis of the invariable succession postulate and the invariable damage postulate, a general form for a one-damage-parameter cumulative-damage model is developed. It has been shown that some of the models previously proposed can be obtained as a particular case of ...
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Cumulative damage in fatigue

1956
Cumulative damage in fatigue is a problem which in recent years has become of interest to designers in almost all branches of structural engineering. To the aircraft designer however — especially under present-day conditions of operation — it is of paramount importance.
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Cumulative Fatigue Damage

2006
Abstract This chapter addresses the cumulative effects of fatigue and how to determine its impact on component lifetime and performance. It begins by defining a loading history and its corresponding hysteresis loops that exposes the deficiencies of some of the theories discussed.
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Cumulative Damage Models with Replacement Last

2011
This paper proposes a damage model with replacement last. First, the preventive replacement policies with a damage process is given: the unit is replaced at a damage level Z or a planned time T, whichever occurs last. Second, optimal Z for a given T is derived, and compare such an optimal policy with those of replacement first and standard replacement.
Xufeng Zhao, Keiko Nakayama, Syouji Nakamura   +2 more
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On a Replacement Problem of a Cumulative Damage Model

Operational Research Quarterly (1970-1977), 1976
Items are assumed to fail only by degradation. An appropriate stochastic model of such items is a cumulative process in which an item can fail only when the total amount of damage exceeds a prespecified failure level. This paper introduces a replacement policy in which an item is replaced at a certain level of damage before failure or at failure ...
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Cumulative Damage Distributions

2007
The density of the first-passage time for a particle, with drift, undergoing Brownian motion was first obtained by E. Schrodinger [101, 1915]. He considered N particles in Brownian motion, all initially at zero and white. When one reaches a distance l it becomes green.
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