منابع مشابه
Predictions of Widespread Fatigue Damage Thresholds in Aging Aircraft
Commercial transport aircraft are required to operate under the concept of damage tolerance. Because of the structural redundancy and the crack arrest capability, the current fleet of commercial aircraft was initially designed to have sufficient residual strength to sustain discrete source damage. However, fatigue damage during the life of an aircraft can significantly reduce the residual stren...
متن کاملAddressing vital sign alarm fatigue using personalized alarm thresholds.
Alarm fatigue, a condition in which clinical staff become desensitized to alarms due to the high frequency of unnecessary alarms, is a major patient safety concern. Alarm fatigue is particularly prevalent in the pediatric setting, due to the high level of variation in vital signs with patient age. Existing studies have shown that the current default pediatric vital sign alarm thresholds are ina...
متن کاملJEPonline Perceptual and Physiological Fatigue Thresholds during Cycle Ergometry
Cochrane KC, Housh TJ, Bergstrom HC, Jenkins NDM, Johnson GO, Schmidt RJ, and Cramer JT. Perceptual and Physiological Fatigue Thresholds during Cycle Ergometry. JEPonline 2014;17(5): 95-107. Thirteen subjects (mean ± SD age: 21.8 ± 2.6 yrs) performed an incremental cycling test and 4, 8-min submaximal rides (65 to 80% of VO2 peak) to: (a) compare power outputs and relative intensities that corr...
متن کاملFATIGUE THRESHOLDS OF CRACKS RESULTING FROM IMPACT DAMAGE TO �-TiAl
Significant research has been conducted in recent years on the �-based titanium aluminide alloys. The low density of �-TiAl relative to current nickel-based superalloys, has made it an attractive candidate for use in the low-pressure turbine blades of gas turbine engines [1]. In addition to weight savings, the lower density leads to higher specific stiffness and good high temperature strength r...
متن کاملAre There Critical Fatigue Thresholds? Aggregated vs. Individual Data
The mechanisms underlying task failure from fatiguing physical efforts have been the focus of many studies without reaching consensus. An attractive but debated model explains effort termination with a critical peripheral fatigue threshold. Upon reaching this threshold, feedback from sensory afferents would trigger task disengagement from open-ended tasks or a reduction of exercise intensity of...
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ژورنال
عنوان ژورنال: Polymer Testing
سال: 1990
ISSN: 0142-9418
DOI: 10.1016/0142-9418(90)90014-5