THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE

THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE

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predicting the effect of shot peening on weld fatigue life

.predict the effect of shot peening on the fatigue life of a weld.The total fatigue life of a weld was considered to be composed of a crack initiation and crack propagation period andWeld Magnification Factor Approach in Cruciform Joints The objective of this research is to develop an experimental-theoretical analysis about the influence of the cooling medium and the geometry of the welding bead profile in fatigue life and associated parameters with structural integrity of welded joints.A welded joint with cruciform geometry is considered using SMAW,plates in structural steel ASTM A36 HR of 8 mm of thickness and E6013 Weld Magnification Factor Approach in Cruciform Joints The objective of this research is to develop an experimental-theoretical analysis about the influence of the cooling medium and the geometry of the welding bead profile in fatigue life and associated parameters with structural integrity of welded joints.A welded joint with cruciform geometry is considered using SMAW,plates in structural steel ASTM A36 HR of 8 mm of thickness and E6013

The relative effects of residual stresses and weld toe

The relative effects of residual stress and weld toe geometry on the fatigue strength of 8-mm thick high strength steel cruciform joints welded with the Low Transformation Temperature filler The relative effects of residual stresses and weld toe It is concluded that the increase in fatigue strength is due to the combined effects of the weld toe geometry modification,increase in surface hardness and creation of compressive residualThe relative effects of residual stresses and weld toe 2015 (English) In International Journal of Fatigue,ISSN 0142-1123,E-ISSN 1879-3452,Vol.77,p.160-165 Article in journal (Refereed) Published Abstract [en] The weld toe is one of the most probable fatigue crack initiation sites in welded components.In this paper,the relative influences of residual stresses and weld toe geometry on the fatigue life of cruciform welds was studied.

The effects of robot welding and manual welding on the

The purpose of this study is to analyze the differences between the effects of robot welding and manual welding on the low- and high-cycle fatigue lives of the weld zones for T-shaped weld structures fabricated from SM50A carbon steel using a CO 2 gas arc welding method.Fatigue tests were conducted using a three-point bending method,and the S-N curves of the manual welding and robot welding The Effects of Weld Geometry on Weld Quality and Fatigue In addition,the weld geometry is an important factor which affects the fatigue properties of laser welds[4].Thus,the current study investigated the effects of weld geometry and welding conditions on the weld quality and the fatigue life of laser welds.The Effects Of Weld Geometry On The Fatigue Behavior Of The studies reported herein were concerned with the effects of external geometry on the fatigue behavior of transverse butt welded joints in structural steels.Included were studies of the effects of weld profile,the stress concentrations produced by the weld geometry,and metallurgical aspects of

The Effect of Welding Dimensional Variability on the

However,some specimen types showed greater scatter at long fatigue lives than others.This study investigated the sources of the scatter in terms of the dimensional variability of the weld geometry,such as weld toe radius,weld gap,horizontal weld leg length,and vertical weld leg length.THE EFFECTS OF WELD GEOMETRY ON THE FATIGUEAUGUST 1970 THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE BEHAVIOR OF WELDED CONNECTIONS Abs tract The studies reported herein were concerned with the effects of external geometry on the fatigue behavior of transverse butt welded joints in structural steels.Study 1--The effect of temper cycle,mechanical treatments @article{osti_5940095,title = {Study 1--The effect of temper cycle,mechanical treatments,weld geometry and welding conditions on sheet steel spot weld fatigue resistance},author = {Lawrence,F V and Corten,H T and McMahon,J C},abstractNote = {This study summarizes the initial two-year project sponsored by the American Iron and Steel Institute in which way of improving the fatigue

Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextEffect of TIG-dressing on fatigue strength and weld toe

Weld improvements can increase the length of the crack initiation life and thus increase the total fatigue life and may lead to a difference in fatigue strength between high strength steel and mild steels.This study focuses on the the effects of TIG-dressing on the weld toe geometry and the fatigue strength of TIG-dressed specimens.Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextEffect of Weld Geometry on the Fatigue Behaviour of Sep 25,2017 THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#0183;For a given weld geometry,the fatigue strength is determined by the severity of the stress concentration at the weld toe or at weld defects and by the soundness of the weld metal.The effect of external weld geometry profile on the fatigue behavior of welded small bore super duplex umbilical steel tubes is investigated.Some results are removed in response to a notice of local law requirement.For more information,please see here.

Rib loading effects on weld root fatigue failure modes at

The averaged strain energy density (SED) that can capture both weld geometry and loading condition effects is used to correlate the fatigue test data of different weld root failure modes.The SED is capable of evaluating the fatigue strength of the ribtodeck welded joint failed by different weld root failure modes with a narrow scatter band.Rib loading effects on weld root fatigue failure modes at The averaged strain energy density (SED) that can capture both weld geometry and loading condition effects is used to correlate the fatigue test data of different weld root failure modes.The SED is capable of evaluating the fatigue strength of the ribtodeck welded joint failed by different weld root failure modes with a narrow scatter band.Influence of weld geometry and residual stresses on the Jul 12,2013 THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#0183;Lee C-H,Chang K-H,Jang G-C,Lee C-Y (2009) Effect of weld geometry on the fatigue life of non-load-carrying fillet welded cruciform joints.Eng Fail Anal 16:849855.Article CAS Google Scholar 24.Maddox S (1982) Influence of tensile residual stresses on the fatigue behavior of welded joints in steel,ASTM STP 776.

Influence of static strength on the fatigue resistance of

This implies that the fatigue limit of the weld depends mainly on the long crack propagation threshold (which is constant) and the geometry of the joint.Therefore,relation between fatigue strength of the weld and initial crack length can be deduced and it is generally described by Eq.(8).eR = KthR / [Y (ai)n] = A .ai-n Fig.12.Fatigue of Weldssimilar shape have the same general fatigue behavior so that a single design SN curve can be employed for any weld class.The designer need only determine the nominal stress and select a weld class.There is no need to directly consider the stress concentration effects of the weld.Fatigue of Steel WeldmentsEffects of Weld Geometry The effects of geometry by far over THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#173; ride all other considerations in determining the fatigue strength of a welded Joint.The fatigue strengths of different types of welded joints in mild steel are summarized in Table 1.5I t ca n be see tha i all cases welding causes a significant de THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#173; creas e

Fatigue Crack Growth on Double Butt Weld with Toe Crack

The welded structures have a broad applicability (car industry,aeronautical,marine,pipelines,etc.).The welding being an assembled process,presents both advantages and disadvantages.A simple existing defect after welding can generate a catastrophic fracture.This work studies the fatigue crack growth of double butt weld with toe crack.Fatigue Crack Growth on Double Butt Weld with Toe CrackThe welded structures have a broad applicability (car industry,aeronautical,marine,pipelines,etc.).The welding being an assembled process,presents both advantages and disadvantages.A simple existing defect after welding can generate a catastrophic fracture.This work studies the fatigue crack growth of double butt weld with toe crack.Experimental characterization of fatigue strength in butt In this work the experimental characterization of fatigue strength in butt welded joints considering the geometry and the post-weld cooling cycle was performed.ASTM A-36 structural steel was used as the base metal for the shielded metal arc welding process,with welding electrode E6013.Two experimental factors were established weld bead geometry and the post-weld cooling rate.

Effects of Weld Geometry Size on the Pressure-Bearing

The weld joint is the weakest zone of a longitudinal-seam submerged arc welded (LSAW) pipe,which has great effects on its in-service properties and safety.The weld geometry andEffects of Hammer Peening on Fatigue Performance of Roof THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#0183;The changes in weld geometry and microstructure after hammer peening were measured by the reverse mold and metallographic test.The effects of hammer peening on fatigue life were compared.Through the use of finite element models,the stress and deformation after hammer peening,and the effects of hammerhead radius and hammer depth were Effects of Hammer Peening on Fatigue Performance of Roof THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#0183;The changes in weld geometry and microstructure after hammer peening were measured by the reverse mold and metallographic test.The effects of hammer peening on fatigue life were compared.Through the use of finite element models,the stress and deformation after hammer peening,and the effects of hammerhead radius and hammer depth were

Effect of weld toe geometry on fatigue life of lap fillet

THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#0183;Therefore,the geometry of the weld toe is regarded as an important factor influencing fatigue strength.The effect of weld toe geometries on the fatigue properties of welded joints has been investigated for various types of joints of thick steel plates used in large structures.Effect of weld geometric prole on fatigue life of Marine Structures 19 (2006) 122 Effect of weld geometric prole on fatigue life of cruciform welds made by laser/GMAW processes V.Caccesea,,P.A.Blomquistb,K.A.Berubea,S.R.Webberb,N.J.Orozcob aDepartment of Mechanical Engineering,University of Maine,Orono,ME 04469,USA bApplied Thermal Sciences Inc.,PO Box C,1861 Main Street,Sanford,ME 04073,USAEffect of tool geometry on friction stir processing and Several tool geometries were developed and their effect on weld morphology,material flow,microstructure and hardness of processed regions was analysed.Their effect on fatigue strength of welds was also examined for the most promising tools.The feasibility of FSP MIG T welds was proved.

Effect of Weld Geometry on the Fatigue Behaviour of

Sep 25,2017 THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#0183;Published studies [1,2] have shown that weld geometry is significantly important in determining the fatigue strength of the weld.For a given weld geometry,the fatigue strength is determined by the severity of the stress concentration at the weld toe or at weld defects and by the soundness of the weld metal.Effect of Weld Bead Shape on the Fatigue Behavior ofFigure 1.Weld joint geometry (a) Geometry A; (b) geometry B.Figure 2.Wire angle and distance of tandem MAG welding process.2.3.Fatigue Test During arc welding of the zinc-coated steel sheet,zinc is vaporized and defects occur inside and outside of the weld as shown in Figure 3.In this study,the fatigue test specimens were obtained inEffect of Weld Bead Shape on the Fatigue Behavior ofFigure 1.Weld joint geometry (a) Geometry A; (b) geometry B.Figure 2.Wire angle and distance of tandem MAG welding process.2.3.Fatigue Test During arc welding of the zinc-coated steel sheet,zinc is vaporized and defects occur inside and outside of the weld as shown in Figure 3.In this study,the fatigue test specimens were obtained in

Effect of TIG-dressing on fatigue strength and weld toe

Weld improvements can increase the length of the crack initiation life and thus increase the total fatigue life and may lead to a difference in fatigue strength between high strength steel and mild steels.This study focuses on the the effects of TIG-dressing on the weld toe geometry and the fatigue strength of TIG-dressed specimens.Effect of HFMI treatment procedure on weld toe geometry The effects of high frequency mechanical impact (HFMI) treatment procedure on the weld toe geometry and fatigue strength in 1300 MPa yield strength steel welds were investigated.In this regard first the effect of three or six run treatments on the weld toe geometry was evaluated.EFFECT OF WELDING ON THE AXIAL FATIGUEtension stress cycle.Included in the studies are the effect of surface geometry and the metallurgical changes imparted by the welding.The test results indicate that the introduction of a transverse butt weld in this steel decreases the fatigue strength corresponding to 2,000,000 cycles by

Cited by 8Publish Year 2018Author Tsuyoshi Shiozaki,Naoki Yamaguchi,Yoshikiyo Tamai,Jiro Hiramoto,Kazuhiro Ogawa(PDF) Effect of weld geometry on the fatigue strength of

THE EFFECTS OF WELD GEOMETRY ON THE FATIGUE#0183;Fatigue crack initiation and early crack propagation at the weld toe,which control a large part of the total fatigue lifetime of weldments are strongly influenced by the global and local geometry of the weld.The investigations within the cluster project IBESS,although limited to weld toe cracks,covered various weld configurations.Cited by 23Publish Year 2017Author Benjamin Schork,Pawel Kucharczyk,Mauro Madia,Uwe Zerbst,Jonas Hensel,Julian Bernhard,Didi TchuEffect of the parameters of weld toe geometry on theIt is well known that the geometry of the weld toe has a significant effect on the fatigue strength of those weldments which show crack initiation at the toe.The present paper provides a discussion of the role of four geometrical parame- ters based on theoretical simulation.These parameters are (Fig.1) 1.The weld toe radius ,2.

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