Results 261 to 270 of about 220,973 (311)

Fatigue Life Prediction Models

2011
Chapter 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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Thermomechanical Fatigue Life Prediction Analysis

2003
The life prediction of solder joints under thermal cyclic loading requires a two-stage analysis: (1) a three-dimensional finite element analysis to compute the stress, strain, and strain energy field, and (2) a life prediction analysis. As shown in Fig.
Erdogan Madenci, Ibrahim Guven, Bahattin Kilic   +2 more
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Fatigue Life Prediction Of Tubular Nodes

Offshore Technology Conference, 1980
ABSTRACT 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, Jean P. Gerald, Claude J. Putot   +2 more
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Fatigue and Life Prediction

2005
Abstract This chapter summarizes the various kinds of gear wear and failure and how gear life in service is estimated and discusses the kinds of flaws in material that may lead to premature gear fatigue failure. The topics covered are alignment, gear tooth, surface durability and breakage of gear tooth, life determined by contact stress ...
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Fatigue-life predictions on microcomputers

Computer-Aided Design, 1987
This 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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Fatigue and Life Prediction

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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Cumulative damage and fatigue life prediction

AIAA Journal, 1988
A 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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Bayesian Fatigue Life Prediction

1985
Fatigue failure is an important failure mode for offshore structural joints, in particular for dynamically sensitive deep water structures. To predict the fatigue life only a few test results are generally available for the actual type of joint. In addition, however, test results for joints with slightly different geometries are available. Fatigue life
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Fatigue life prediction of ceramic-matrix composites

Aircraft Engineering and Aerospace Technology, 2018
Purpose This paper aims to predict fatigue life and fatigue limit of fiber-reinforced ceramic-matrix composites (CMCs) with different fiber preforms, i.e. unidirectional, cross-ply, 2D-, 2.5D- and 3D-woven, at room and elevated temperatures. Design/methodology/approach Under cyclic loading, matrix multicracking and interface debonding occur upon ...
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Fatigue life prediction after laser forming

ICALEO 2003: 22nd International Congress on Laser Materials Processing and Laser Microfabrication, 2003
The current models cannot predict the fatigue life after laser forming accurately because of differences in assumptions. This work presents a model to predict fatigue life of sheet metal after laser forming. Results from microstructure integrated finite element modeling of laser forming are incorporated in the fatigue life model.
Jun Zhang, Daniel Pirzada, Lloyd V. Smith, Chu Chin, J. G. Cheng   +4 more
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