Results 261 to 270 of about 223,101 (311)
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Model for life prediction of fatigue–creep interaction
Microelectronics Reliability, 2008This paper discusses the development of a procedure for computing creep and stress relaxation at the critical location in a through-hole structure. A high-speed methodology was developed for calculating cyclic creep and stress relaxation at critical locations of a pile on elastic foundation subjected to cyclic thermomechanical loading.
Ricky Valentin +2 more
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Fatigue of Composites—Fatigue Modulus Concept and Life Prediction
Journal of Composite Materials, 1986Fatigue behavior of glass fiber reinforced epoxy composite materials has been studied analytically. A new concept called "fatigue modulus," which is defined as a slope of applied stress and resultant strain at a specific cycle is introduced. Fatigue modulus degradation is studied using an assumption that the fatigue modulus degrada tion rate follows a
W. Hwang, K.S. Han
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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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Fatigue-life predictions on microcomputers
Computer-Aided Design, 1987This paper presents a fatigue-life prediction program which is written on an IBM PC computer. The main purpose of the computer program is to provide designers and engineers with a fatigue-life prediction program which encompasses the current state of the art in fatigue.
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Cumulative damage and fatigue life prediction
AIAA Journal, 1988A cumulative damage rule is proposed for fatigue of metals under variable stress-amplitude loading. The rule is nonlinear and takes into account the sequence of stress levels, i.e., high-to-low or low-to-high changes of stress amplitudes. To facilitate probabilistic estimates of safety of structural elements subjected to fatigue loading, a stochastic ...
Tiiu V. Kutt, M. P. Bieniek
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Fatigue Life Prediction Models
2011Chapter 4 deals with low cycle fatigue tests and derivation of fatigue life prediction models curve-fitted to the fatigue test data for Sn–Ag–Cu and Sn–Cu solder alloys. The fatigue tests were conducted under low cycle fatigue test conditions over a wide range of isothermal temperatures (−40°C to +125°C) and frequencies.
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Statistical prediction of the fatigue life of structures
Strength of Materials, 19851. The relative scatter (variance factor) of the number of cycles of crack extension by the given length depends on the magnitude of this extension and is independent of the range of the stress intensity factor. 2. Relationships were derived, and their adequacy to the experimental data was verified, for estimating the total relative ...
M. V. Baumshtein, A. V. Prokopenko
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Prediction of Acoustic Fatigue Life
1961Current procedures used by the airframe industry for predicting fatigue life of structures loaded by high-energy acoustical noise are reviewed. Deficiences in the methods are discussed and future work is suggested. The need for spectrum-type fatigue tests is emphasized.
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Fatigue Life Prediction Of Tubular Nodes
Offshore Technology Conference, 1980ABSTRACT Large scale specimens of X-joints were tested in fatigue, either in tension or in in-plane bending (R=O.1). Similar specimens (size ratio 1/2) were tested in order to estimate the scale effect. y was chosen here from 8 to 12, at the limit of the validity of any shell-theory.
Henri Paul Lieurade +2 more
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Fatigue life prediction of sintered steels
Powder Metallurgy, 1999Low cycle fatigue damage of a sintered alloy was studied by comparing experimental results with those obtained from a model suggested in the literature, which considers the effect of non-zero mean strain on life prediction. Specimens of sintered Fe–C–Cu alloy with two different porosities were used.
E.S. Palma, A. Cagnoni
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