Results 251 to 260 of about 7,338,374 (306)
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Quality of life in chronic fatigue syndrome
Social Science & Medicine, 1995Whilst the debilitating fatigue experienced in patients suffering from Chronic Fatigue Syndrome (CFS) results in a subjective marked impairment in functioning, little research has investigated the impact of this disorder on quality of life. Forty-seven subjects with a confirmed diagnosis of CFS and 30 healthy controls were compared using the Sickness ...
Schweitzer, Robert +4 more
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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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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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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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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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2006
Abstract This chapter familiarizes readers with the methods used to quantify the effects of fatigue on component lifetime and failure. It discusses the development and use of S-N (stress amplitude vs. cycles to failure) curves, the emergence of strain-based approaches to fatigue analysis, and important refinements and modifications.
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Abstract This chapter familiarizes readers with the methods used to quantify the effects of fatigue on component lifetime and failure. It discusses the development and use of S-N (stress amplitude vs. cycles to failure) curves, the emergence of strain-based approaches to fatigue analysis, and important refinements and modifications.
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1996
Abstract This article discusses two major approaches in estimating fatigue life from the viewpoint of their use as engineering methods. These include the stress-based (S-N curve) approach and strain-based approach. The stress-based and strain-based approaches are compared, with some comments on their manner of use and limitations.
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Abstract This article discusses two major approaches in estimating fatigue life from the viewpoint of their use as engineering methods. These include the stress-based (S-N curve) approach and strain-based approach. The stress-based and strain-based approaches are compared, with some comments on their manner of use and limitations.
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Vibration and Fatigue Life of Steel Strand
Transactions of the American Institute of Electrical Engineers, 1950RECENTLY REPORTED failures of steel ground strand attributed to vibration fatigue have stimulated new effort toward probing for possible explanations of the underlying reasons for the outbreak. The study of the construction practices followed by many utilities revealed several facts: failures were more frequently reported on the higher strength grades ...
J. C. Little +2 more
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The Presentation of Fatigue Data for Fatigue Life Calculations
The Journal of the Royal Aeronautical Society, 1956SummaryA simple and convenient “ endurance chart” for the presentation of basic fatigue data is described, where static failure is regarded as simply fatigue failure in one cycle of loading.This chart shows the effects of mean stress, residual stress and pre-tension, and displays several interesting features of fatigue data.
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2001
Abstract In the design of composite structures for durability and damage tolerance, the primary concerns are out-of-plane failures, such as delamination, material degradation associated with environment, stability under compression loading, large degree of scatter in fatigue life, and bearing failure of joints.
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Abstract In the design of composite structures for durability and damage tolerance, the primary concerns are out-of-plane failures, such as delamination, material degradation associated with environment, stability under compression loading, large degree of scatter in fatigue life, and bearing failure of joints.
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2022 3rd International Conference on Advanced Electrical and Energy Systems (AEES), 2022
Tiangeng Li +5 more
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Tiangeng Li +5 more
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Machine learning-based predictions of fatigue life and fatigue limit for steels
Journal of Materials Science and Technology, 2021Zhilei Wang +2 more
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