Results 21 to 30 of about 2,178,636 (236)

A predictive fatigue life model for anodized 7050 aluminium alloy [PDF]

open access: yes, 2013
The objective of this study is to predict fatigue life of anodized 7050 aluminum alloy specimens. In the case of anodized 7050-T7451 alloy, fractographic observations of fatigue tested specimens showed that pickling pits were the predominant sites for ...
Chaussumier, Michel   +4 more
core   +1 more source

A fatigue multi-site cracks model using coalescence, short and long crack growth laws, for anodized aluminum alloys [PDF]

open access: yes, 2010
It has been shown that decrease of the fatigue life of aluminium alloys treated with anodization can be explained by the degradation of surface condition due to pickling.
Chaussumier, Michel   +9 more
core   +1 more source

An axial crack growth prediction procedure initiated at butt welded joint (Growth prediction for surface crack deeper than semi-circular and that retarded at weld fusion line)

open access: yesNihon Kikai Gakkai ronbunshu, 2018
Structural integrity of cracked pipes is assessed by predicting crack growth. In the fitness-for-service code of the Japan Society of Mechanical Engineers (JSME), the crack growth is predicted using stress intensity factor at the deepest and surface ...
Masayuki KAMAYA
doaj   +1 more source

Modelling of the fatigue strength degradation due to a semi-elliptical flaw

open access: yesForces in Mechanics, 2021
Due to the fulfilment of modern operational requirements and time-consuming of complex fatigue responses computation, the surface micro-flaw analysis in large moving systems is still one of the challenging tasks. Thus, the present research work discusses
Slobodanka Boljanović   +1 more
doaj   +1 more source

Experimental and numerical simulations on compound stress intensity factor of semi-elliptical cracks on the exchanger outer walls with inclined angles

open access: yesAlexandria Engineering Journal, 2022
Based on the theory of elastic fracture and using direct modeling method, a numerical model was developed for solving the composite stress intensity factor of semi-elliptical cracks on exchanger outer walls with inclined angles.
Dong-fang Li, Zhao-hui Mao
doaj   +1 more source

Finite Element Analysis of Fatigue in Offshore Pipelines with Internal and External Circumferential Cracks

open access: yesApplied Mechanics, 2020
Fatigue lifetime of offshore pipelines with semi-elliptical circumferential surface cracks is often underestimated. An accurate prediction of the pipeline structural integrity is nevertheless important in order to prevent unnecessary and expensive ...
Ayodeji Olamide   +2 more
doaj   +1 more source

Analysis of Crack Growth in the Wall of an Electrolyser Compartment [PDF]

open access: yesJournal of Mechanical Engineering, 2020
Electrolysis units are widely used in different branches of industry. They are high-pressure tanks, each having a chamber and electrodes placed therein, which are arranged in assemblies, a cover as well as an inlet and outlet pipes. High requirements are
Pavlo P. Hontarovskyi   +3 more
doaj   +1 more source

Fully plastic solution for a semi-elliptical surface crack.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1985
To estimate the possibility of LBB (Leak-Before-Break), one of the important design concept for the balance of the safety margin and the economy of the structure, it is necessary to investigate the behavior of the inner surface crack in the structure.
YAGAWA, Genki   +2 more
openaire   +2 more sources

Predicting fatigue crack growth life for cold-worked holes based on existing closed-form residual stress models. [PDF]

open access: yes, 2003
This paper studies the capability of four closed-form solutions for calculating cold expansion-induced residual stresses. The aim is to check whether these models are able to provide accurate solutions of residual stresses for three aerospace grade ...
Wang, Z., Zhang, Xiang
core   +1 more source

Numerical Investigation of Crack Mitigation in Tubular KT-Joints Using Composite Reinforcement

open access: yesEngineering Proceedings, 2023
Recently, fiber-reinforced polymers (FRP) have begun to be used for steel structure reinforcement, following decades of successful utilization for the reinforcement of concrete structures.
Mohsin Iqbal   +4 more
doaj   +1 more source

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