Πλοήγηση ανά Θέμα "Welds"
Αποτελέσματα 1-19 από 19
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Bending response of lap welded steel pipeline joints
(2020)The paper presents a combined experimental and numerical investigation of the bending response of lap welded joints in pressurized steel water pipelines. It is motivated by the structural performance of large-diameter steel ... -
An experimental approach for estimating the effect of heat affected zone (HAZ) microstructural gradient on fatigue crack growth rate in aluminum alloy FSW
(2017)The microstructural gradient of the heat affected zone (HAZ) in aluminum alloy FSW has been simulated experimentally by subjecting the parent alloy to a controlled aging process. The purpose of the simulation is to estimate ... -
Experimental Investigation of Steel Lap Welded Pipe Joint Performance under Severe Axial Loading Conditions in Seismic or Geohazard Areas
(2020)Welded lap joints are commonly used in large-diameter steel pipelines for water transmission. Their structural performance constitutes a key consideration for safeguarding pipeline integrity with no loss of pressure ... -
Fatigue failure investigation of pre-corroded and laser-welded Al-Cu-Mg-Ag Alloy with different temper condition
(2010)The fatigue failure mechanisms of pre-corroded, laser beam welded Al-Cu-Mg-Ag alloy in different temper conditions (T3,T8) have been investigated. Aging influences the corrosion behavior of laser welds. In the T3 temper, ... -
Fatigue performance of pre-corroded 6xxx aluminum alloy laser beam welds with dissimilar heat treatment
(2014)The role of existing corrosion damage on the fatigue performance of 6156 AA laser beam welds in T3 state, with additional post weld heat treatment T8, has been assessed. The welds were subjected to salt fog environment for ... -
Finite Element Analysis of Steel Lap Welded Joint Behavior under Severe Seismic Loading Conditions
(2019)The present paper extends the experimental and numerical research presented at the ASCE 2018 conference. The paper is numerical, based on a shell finite element simulation of the welded lap joint subjected to internal ... -
High-strength steel tubular welded joints under extreme loading conditions
(2016)The present work examines the behavior of high-strength steel welded tubular connections subjected to extreme loading conditions, focusing on their monotonic and low-cycle fatigue performance. The work consists of two ... -
Improving the Performance of Steel Pipe Welded Lap Joints in Geohazard Areas
(2016)Finite element simulation of the structural performance of stiffened lap welded pipeline joints was performed, subjected to severe axial and bending loading conditions, resulting from ground-induced actions, in the presence ... -
Joint Strength or "Efficiency" Factors of Steel Lap Welded Joints for Use in Water Conveyance
(2019)Joint "efficiency" factors are proposed for pressure vessels, piping, and pipelines by ASME standards. For the particular case of non-radiographically-tested lap-welded joints, a low value of joint "efficiency" is proposed. ... -
Low-cycle fatigue of fillet-welded steel plate connections
(2021)The present study focuses on the mechanical behavior of fillet-welded steel plated joints and the development of a strain-based fatigue assessment procedure, motivated by the seismic response of unanchored steel tanks that ... -
Mechanical behavior of dented steel pipes subjected to bending and pressure loading
(2019)The presence of dents on steel pipeline wall may constitute a threat for pipeline structural safety. Experimental testing results supported by numerical simulations are reported, in an attempt to assess the structural ... -
Mechanical performance of laser spot-welded joints in Al-Al/Cu solar thermal absorbers
(2018)The mechanical performance of laser spot welded joints used in Al-Cu and Al-Al thermal absorber systems has been evaluated under different laser welding and mechanical loading conditions. In the experimental investigation, ... -
A new concept for improving the structural resilience of lap-welded steel pipeline joints
(2022)Lap-welded steel joints are widely used in steel pipelines for water transmission, and their structural resistance is essential for safeguarding pipeline integrity and functionality after severe earthquakes or other ... -
Newly Developed Seismic Resilient Steel Pipe Joint Safeguards: Pipeline Structural Integrity during Severe Geohazard Events
(2020)The mechanical performance of lap welded joints is essential for safeguarding the structural integrity of steel water pipelines, after a severe earthquake or other geohazard loadings. Over the past 4 years, an extensive ... -
A Novel steel pipe joint for enhancing pipeline seismic resilience i: Development and validation
(2022)During the last four years, an extensive experimental project has been launched to determine the structural performance of lap welded joints under ground-induced deformations, mainly due to severe seismic events. The ... -
Phase-Field Modeling of Nugget Zone for a AZ31-Mg-Alloy Friction Stir Weld
(2018)This work presents simulation of microstructure evolution in the nugget zone (NZ) of a AZ31-Mg-alloy friction stir weld. The process parameters (tool geometrical characteristics, rotational speed, travel speed, applied ... -
Sensitivity issues concerning inverse heat transfer analysis of welds
(2009)The construction of a general parameterization for inverse analysis of welding processes using incomplete or minimal experimental data, although demonstrated in principle, has yet to be firmly established. The structure ... -
Structural behavior and design of high-strength steel welded tubular connections under extreme loading
(2020)The present work is motivated by the increasing need for cost-efficient solutions in offshore structural systems for wind energy production and for improvement of their structural performance. The structural behavior and ... -
Ultimate bending capacity of spiral-welded steel tubes - Part I: Experiments
(2016)The present investigation refers to the bending capacity of spiral-welded steel tubes. The first part of this investigation presents the results of a full-scale experimental program, aiming to investigate the structural ...