Results 141 to 150 of about 1,085,535 (169)

Lifetime of semi-ductile materials through the critical plane approach

International Journal of Fatigue, 2014
Abstract This paper presents the results of fatigue strength estimation depending on the variable orientation of the critical plane for proportional and non-proportional bending and torsion with regard to specimens made of aluminium alloy 2017A. The algorithm applied for the fatigue strength evaluation is based on the Carpinteri–Spagnoli proposal and
Karolina Walat, Tadeusz Łagoda
openaire   +1 more source

Drillpipe Fatigue Life Prediction Model Based On Critical Plane Approaches

Offshore Technology Conference, 1994
ABSTRACT The applicability of critical plane approaches to predict fatigue life expectancy of drillpipe is investigated. These approaches consist of physically-based damage parameters that are capable of handling complex axial, bending and torsional load histories.
J.C.R. Plácido, J.J. Azar, J.R. Sorem, Franz Kessler, S.M. Tipton   +4 more
openaire   +1 more source

Fatigue Damage Calculation Using the Critical Plane Approach

Journal of Engineering Materials and Technology, 1995
The critical plane approach is applied to model material fatigue behavior under any constant amplitude proportional loading. The most critical plane and the largest damage parameter are determined in closed form for six damage criteria that have been proposed in the literature.
openaire   +1 more source

Fatigue Crack Initiation in Threaded Fasteners Using the Critical Plane Approach

SAE Technical Paper Series, 2003
<div class="htmlview paragraph">In this investigation, the stress and strain distributions at the first thread of a joint under cyclic uniaxial loads are examined by finite element analysis. The stress and strain histories of material elements along the thread surface are used in conjunction with multiaxial fatigue theories and the critical plane
D. S. Taylor, J. Pan
openaire   +1 more source

New strain energy-based critical plane approach for multiaxial fatigue life prediction

The Journal of Strain Analysis for Engineering Design, 2019
Based on critical plane approach, this article develops a new damage parameter through combing the equivalent strain energy aspect for multiaxial fatigue analysis, which includes no additional fitted parameters and overcomes the deficiency of using only equivalent stress/strain criterion separately under multiaxial loadings. Then, experimental data of
Meng-Fei Hao, Shun-Peng Zhu, Ding Liao
openaire   +1 more source

Multiaxial fatigue life estimation in welded joints using the critical plane approach

International Journal of Fatigue, 2009
Abstract Many engineering structures experience multiaxial fatigue states of stress–strain in the vicinity of welded joints. Fatigue assessment of welded joints under proportional (in-phase) cyclic loading can be performed by using conventional hypotheses (e.g., see the von Mises criterion or the Tresca criterion) on the basis of local approaches. On
CARPINTERI, Andrea, SPAGNOLI, Andrea, VANTADORI, Sabrina   +2 more
openaire   +2 more sources

An Energy Based Critical Plane Approach to Multiaxial Fatigue Analysis

1999
A multiaxial fatigue damage criterion has been formulated based on observations that fatigue crack development is governed by stresses and strains acting on critical planes in materials. The damage parameter incorporates both Mode I and Mode II loading.
R Rolović, SM Tipton
openaire   +1 more source

A Critical Plane Approach for LCF Evaluation of Gas Turbine Disks and Rotors

Volume 7A: Structures and Dynamics, 2019
Abstract In order to safely increase gas turbine efficiency without issues of early damage and failures, component life evaluation must neither be too conservative nor too optimistic. The method used for designing the parts is supposed to be as accurate as possible, so that the subsequent application of the appropriate statistically ...
Riva A., Riazantsev S., Foletti S., Beretta S.   +3 more
openaire   +1 more source

A critical plane gradient approach for the prediction of notched HCF life

International Journal of Fatigue, 2005
Abstract A new approach, which uses the Findley critical plane damage parameter along with the stress gradient at the notch, was developed for predicting notched HCF life. The proposed approach and methodology for HCF notch analysis accounts for: (i) the multiaxial stress state at the notch, (ii) the notch size effect, and (iii) the effect of fatigue
R NAIK, D LANNING, T NICHOLAS, A KALLMEYER   +3 more
openaire   +1 more source

ASME Sec VIII Div 3 Fatigue Life Predictions Using Critical Plane Approach

Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Competition and 23rd Annual Student Paper Competition; ASME NDE Division, 2015
ASME VIII Div 3 fatigue evaluation is based on the theory that cracks tend to nucleate along the slip lines oriented in the maximum shear stress planes. This code provides methods to calculate the fatigue stresses when the principal stress direction does not change (proportional loading) and axes change (nonproportional loading).
Kumarswamy Karpanan, William Thomas
openaire   +1 more source