Results 261 to 270 of about 2,032,204 (309)

Accelerated Life Test and Life Prediction of an Electromechanical Actuator

2019 International Conference on Artificial Intelligence and Advanced Manufacturing (AIAM), 2019
This paper gives an accelerated test method for electromechanical actuator (EMA) and predicts its life based on Wiener process degradation model. According to the historical fault data and the FMECA analysis, we obtain that the key weak links of the electromechanical actuators are the electromagnetic clutch and the tachogenerator.
Na Han, Jun Yao, Shaopei Li
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Life Cycle Assessment and Service Life Prediction

Journal of Industrial Ecology, 2014
Summary Models of buildings in life cycle assessment (LCA) often use simple descriptions of operational energy, maintenance, and material replacement. The scope of many building LCAs is often limited and uses assumptions such as building lifetimes of 30 to 50 years.
Aneurin Grant, Robert Ries, Charles Kibert   +2 more
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Fatigue and Life Prediction

2005
Abstract This chapter summarizes the various kinds of gear wear and failure and how gear life in service is estimated and discusses the kinds of flaws in material that may lead to premature gear fatigue failure. The topics covered are alignment, gear tooth, surface durability and breakage of gear tooth, life determined by contact stress ...
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Predictability in life and in science

Inquiry, 1961
It is a significant coincidence that social science tends to assume a universal human need for predictability, and also uses predictive power as the basic criterion of scientific truth. It is claimed here that man's need for predictability often is crossed by a need for uncertainty and chance.
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Predicting the Confidence of Passing Life Tests

IEEE Transactions on Reliability, 1977
In this paper we consider the problem of predicting the results of a fixed-length preliminary test. Formulae of this s-confidence are presented for a wide variety of fixed-length reliability tests and preliminary test results. The -results also apply if the preliminary test consists of the initial portion of the reliability test itself.
Schafer, Ray E., Angus, John E.
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Is length of life predictable?

Human biology, 1997
A random sample of death records of adult males from the period 1967 to 1970 was chosen from the South Australian Registry of Births, Deaths, and Marriages. The natural parents of these individuals were identified by cross-referencing to birth certificates, and an extensive search was made of the death records for these parents.
Tallis, George M., Leppard, Phillip I.
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Shelf-life prediction

1987
The term ‘shelf life’ is generally understood to be the duration of that period, between packing a product and using it, for which the quality of the product remains acceptable to the product user. An attempt to predict this period from data on the product, the pack and the distribution and storage conditions is appropriate where alternative packaging ...
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Prediction of Quality of Life in Patients with Tinnitus

British Journal of Audiology, 2000
According to epidemiological studies of tinnitus prevalence, 0.5-1% of respondents report that tinnitus severely affects their ability to lead a normal life. In the present investigation quality of life and its association with tinnitus-related factors: psychological, psychosomatic and audiological, was studied based on a sample of 122 patients, who ...
S I, Erlandsson, L R, Hallberg
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Development of a fatigue life prediction system for a bogie frame- Actual life prediction using the fatigue life prediction system

The Proceedings of the Transportation and Logistics Conference, 2021
Daisuke SHINAGAWA, Yoshiyuki SHIMOKAWA, Seita ITOH, Takahiro FUJIMOTO, Osamu KONDO, Junichi NAKAGAWA, Hideki MINAMI   +6 more
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Prediction of Fatigue Life

Journal of Applied Physics, 1960
On the basis of the relation between the ``reliability-function'' (probability of surviving beyond age N in cycles or t in time) and the ``risk'' of failure (as a function of age), the physical interpretation of the latter can be used to extrapolate the former beyond the range of possible observation.
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