منابع مشابه
Fatigue Testing
Fatigue is the progressive, localized, permanent structural change that occurs in materials subjected to fluctuating stresses and strains that may result in cracks or fracture after a sufficient number of fluctuations. Fatigue fractures are caused by the simultaneous action of cyclic stress, tensile stress and plastic strain. If any one of these three is not present, fatigue cracking will not i...
متن کاملFatigue testing median sternotomy closures.
OBJECTIVE Sternal dehiscence is commonly due to wire cutting through bone. With a biological model, we measured the rate of cutting through bone, of standard steel wire closure, peristernal steel wire, figure-of-eight closure, polyester and sternal bands sternotomy closure techniques. METHODS Polyester, figure-of-eight, peristernal and sternal band closures were tested against standard closur...
متن کاملFatigue testing of energy storing prosthetic feet.
This paper describes a simple approach to the fatigue testing of prosthetic feet. A fatigue testing machine for prosthetic feet was designed as part of the programme to develop an energy storing prosthetic foot (ESPF). The fatigue tester does not simulate the loading pattern on the foot during normal walking. However, cyclic vertical loads are applied to the heel and forefoot during heel-strike...
متن کاملTesting of Commercially Available Fatigue Monitors
This report presents an evaluation of three commercially available fatigue monitors (the Onguard eye closure monitor, a head nodding monitor-Dozer's Alarm, and an analogue of the Roadguard reaction time monitor) based on laboratory testing. The devices showed an ability to detect fatigue in some cases but were not able to maintain alertness and thus prevent performance deterioration. There were...
متن کاملFatigue Testing and Analysis of Results
(d) Mechanical propert, Defiexion method, brittle coating method, bonded wire technique, moist coating method, vibration methods involving frequency and damping or damping changes during fatigue test. (e) Penetrating radiation tests. (f) Ultrasonic testing Reflection or through transmission methods. (g) Magneto-inductive tests. (h) Electrical tests. Electrical resistance or tribo-electrical met...
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ژورنال
عنوان ژورنال: Journal of the Society of Materials Science, Japan
سال: 1965
ISSN: 1880-7488,0514-5163
DOI: 10.2472/jsms.14.172