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FATIGUE FAILURE AT STRESSES BELOW FATIGUE LIMIT
Fatigue & Fracture of Engineering Materials & Structures, 1986AbstractIn the present study, the authors have focused attention on the internal stress in a material. A stress applied to a specimen does not fully act to deform the material. The effective stress which actually acts on dislocations depends on the internal stress in the material.
C. Iwasaki, Y. Ikai
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Estimating Fatigue Curves with the Random Fatigue-Limit Model
Technometrics, 1999In a fatigue-limit model, units tested below the fatigue limit (also known as the threshold stress) theoretically will never fail. This article uses a random fatigue-limit model to describe (a) the dependence of fatigue life on the stress level, (b) the variation in fatigue life, and (c) the unit-tounit variation in the fatigue limit.We fit the model ...
Pascual, Francis, Meeker, William
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Physical Mesomechanics, 2020
The paper analyzes the scale hierarchy of transitions from very high to high and low cycle fatigue which are taken as fatigue limit according to the Wohler concept. The analysis shows that the life distribution in the transition range 106–108 cycles is multimodal.
A. A. Shanyavskiy, A. P. Soldatenkov
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The paper analyzes the scale hierarchy of transitions from very high to high and low cycle fatigue which are taken as fatigue limit according to the Wohler concept. The analysis shows that the life distribution in the transition range 106–108 cycles is multimodal.
A. A. Shanyavskiy, A. P. Soldatenkov
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Tensile Fatigue Limits of Prosthodontic Adhesives
Journal of Dental Research, 1991Tensile fatigue limits and ultimate tensile strengths of some prosthodontic adhesive systems were determined. Ni-Cr-Be cylinders were: electro-etched, chemically etched, and sandblasted prior to being bonded end-to-end with BIS-GMA and 4-META adhesives.
S A, Aquilino +2 more
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Random Features of the Fatigue Limit
Extremes, 1999The possibility of estimating the fatigue limits of metallic materials for design purposes is investigated. The fatigue limit is defined as the highest stress amplitude for which material in question has an infinite life. The most common method for fatigue limit estimations is to make laboratory tests on a number of specimens and use some statistical ...
Svensson, Thomas, De Maré, Jacques
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Fatigue limit of notched bodies
Materials Science and Engineering, 1978Abstract The fatigue limit of notched bodies was analysed on the basis of the physical interpretation of the fatigue limit of smooth bodies. The relation between the stress concentration factor, Kt, and the fatigue notch factor, Kf, was derived theoretically, taking into account both the effect of the cyclic plasticity at the notch root and the ...
P Lukáš, M Klesnil
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Transactions of the Korean Society of Mechanical Engineers A, 2009
Fatigue limit of the copper film coated by Sn was estimated using Goodman diagram and Gerber diagram. To obtain the high cycle fatigue life curve, S-N curve, of the film, the high cycle fatigue test was carried out by applying the constant amplitude load to the film specimen with three different stress ratio of 0.05, 0.3 and 0.5 and the frequency of 40
Yong-Hak Huh +4 more
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Fatigue limit of the copper film coated by Sn was estimated using Goodman diagram and Gerber diagram. To obtain the high cycle fatigue life curve, S-N curve, of the film, the high cycle fatigue test was carried out by applying the constant amplitude load to the film specimen with three different stress ratio of 0.05, 0.3 and 0.5 and the frequency of 40
Yong-Hak Huh +4 more
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Non-Propagating Fatigue Cracks: The True Fatigue Limit
1989There are several reasons why fatigue cracks may cease to grow and hence need not be dangerous.
J. R. Yates, K. J. Miller
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Very high cycle fatigue – Is there a fatigue limit?
International Journal of Fatigue, 2011Abstract The paper gives an overview of the present state of research on fatigue strength and failure mechanisms at very high number of cycles ( N f > 10 7 ). Testing facilities are listed. A classification of materials with typical S – N curves and influencing factors like notches, residual stresses and environment are given.
B. Pyttel, D. Schwerdt, C. Berger
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Fatigue Failure under Varying Loading within Fatigue Limit Diagram
Materials Science Forum, 2007Although fatigue limit diagram is defined in principle for constant stress amplitude condition, it is often considered that fatigue failure would not occur even in varying loading if applied stresses were kept within the fatigue limit diagram. However, it was shown in the case of small-notched specimen and fretting fatigue that fatigue failure occurred
Yoshiyuki Kondo, H. Eda, Masanobu Kubota
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