Results 201 to 210 of about 11,860 (260)

Estimating Fatigue Curves With the Random Fatigue-Limit Model

Technometrics, 1999
In 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 ...
Francis G Pascual, William Q Meeker
exaly   +5 more sources

On the Dang Van fatigue limit in rolling contact fatigue

International Journal of Fatigue, 2006
Recently, various methods have been proposed to assess the risk of rolling contact fatigue failure and in particular, the Dang Van multiaxial fatigue criterion has been suggested in a simple approximate formulation by Ekberg, Kabo and Andersson. In a recent note by Ciavarella and Maitournam, it was found that the approximation is only valid in a ...
CIAVARELLA, Michele, Monno, F., DEMELIO, Giuseppe Pompeo   +2 more
openaire   +2 more sources

Fatigue limit in fused silica

Journal of the European Ceramic Society, 2001
Abstract The threshold stress intensity factor for sub-critical crack growth in fused silica was measured using the interrupted static fatigue (ISF) test and from observations of indentation crack growth under load. Good agreement was obtained between the two techniques with values of 0.31–0.34 MPa√m and 0.30±0.02 MPa√m, respectively.
Sglavo, Vincenzo Maria, D. Green
openaire   +2 more sources

Random Features of the Fatigue Limit

Extremes, 1999
The 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
openaire   +1 more source

Very high cycle fatigue – Is there a fatigue limit?

International Journal of Fatigue, 2011
Abstract 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
openaire   +1 more source

FATIGUE FAILURE AT STRESSES BELOW FATIGUE LIMIT

Fatigue & Fracture of Engineering Materials & Structures, 1986
AbstractIn 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
openaire   +1 more source

Tensile Fatigue Limits of Prosthodontic Adhesives

Journal of Dental Research, 1991
Tensile 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, A M, Diaz-Arnold, T J, Piotrowski   +2 more
openaire   +2 more sources

Fatigue limits of steels and stress gradient*

Strength of Materials, 2011
Based on generalizing the results of numerous experimental investigations, the empirical relationships between the fatigue limit of steels and the stress gradient are proposed and justified, which take into account the fatigue damage behavior of smooth specimens and specimens with stress concentrators.
Troshchenko, V.T., Khamaza, L.A.
openaire   +2 more sources

Fatigue-Limit Effect on Variable-Amplitude Fatigue of Stiffeners

Journal of the Structural Division, 1979
The effect of the constant-amplitude fatigue limit on the variable-amplitude fatigue life was determined experimentally. Tensile specimens with transverse stiffeners welded either automatically or manually were tested in such a way that, from one set of tests to another, an increasing number of cycles fell below the fatigue limit.
Pedro Albrecht, Ian M. Friedland
openaire   +1 more source

Scales of Metal Fatigue Limit

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
openaire   +1 more source