Fatigue Strength of EB Transverse Butt Weld Joints in Steel

FATIGUE STRENGTH F TRANSVERSE BUTT-WELDED

FATIGUE STRENGTH F TRANSVERSE BUTT-WELDED

fatigue strength f transverse butt-welded joints in n-a-xtra 100 steel by g.r.scott j.e.stallmeyer and w.h.munse a report of an investigation conducted by the civil engineering department university of illinois in cooperation with national steel corporation university of illinois urbana,illinois february 1963sp.infoFatigue of Steel Weldments - American Welding Societycreas e in fatigue strength.Butt Welds More fatigue testing has been per­ formed on transverse butt welds than on any other type of weld.For a simple butt weld with the weld rein­ forcement intact,fracture occurs at the edge of the weld reinforcement (weld toe) because the stress concentration,caused by the change of cross-section,is a

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File Size 1MBPage Count 11Fatigue Behaviour of Welded Joints SpringerLink

File Size 1MBPage Count 11Fatigue Behaviour of Welded Joints SpringerLink

Fatigue is the most common cause of failure in welded structures and components,accounting for around 90% of failures,and usually design stresses in repeatedly loaded structures are limited by the fatigue strength of weld details,which can be very low (Fig.1).sp.infoCited by 2Publish Year 1989Author S.J.MaddoxFatigue behaviour of butt welded joints in a high strength Three welding conditions of transverse butt joints and base material were investigated in this fatigue study as welded; welds overfill removed by grinding; welds overfill and first weld root removed by grinding.The overfill removing by grinding promotes a significant improvement of the fatigue resistance in comparison with the as welded condition.

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 results for this questionFeedbackFATIGUE STRENGTH OF MISALIGNED CRUCIFORM AND

results for this questionFeedbackFATIGUE STRENGTH OF MISALIGNED CRUCIFORM AND

The virtues of fracture mechanics fatigue analysis of welded joints are outlined.The stress intensity factors for toe and root cracks as calculated by the finite element method for cruciform joint is presented.Crack growth data for welds in steel to NVE 36 is presented,and applied in an analysis of transverse,load-carrying welds.From this,the fatigue strength of misaligned joints is sp.infoFATIGUE EXPERIMENTS ON VERY HIGH STRENGTH STEELFatigue Experiments on Very High Strength Steel Base Material and Transverse Butt Welds 16 Three governing design conditions should be fulfilled making use of VHSS in civil engineering structures the most efficient way 1) VHSS should preferably be designed for lattice structures.

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THE EFFECT OF MISALIGNMENT ON THE FATIGUE

THE EFFECT OF MISALIGNMENT ON THE FATIGUE

Abstract— The effect of axial misalignment on the fatigue strength of load‐carrying transverse cruciform welded joints was investigated using experimental and fracture mechanics methods.Where failure occurred by cracking from the weld toe,misalignment significantly reduced the fatigue strength.The reduction could be predicted using a nominal stress concentration factor (SCF).sp.infoWELDS- STATIC AND FATIGUE STRENGTH – II - steelWELDS-STATIC AND FATIGUE STRENGTH-II Partial penetration butt welds may be used for static loading,if reduced strength is acceptable.On the other hand,a fillet weld is made away from the edges of the abutting plates.The joint is formed by welding the members in an overlapped position or by using a secondary joining material.

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Fatigue design rules for welded structures (January 2000

Fatigue design rules for welded structures (January 2000

However,it did degrade the surface of unwelded steel,reducing its fatigue strength to that of the butt welds ( Fig.5).The same result was found for normal structural steel,showing that unless unwelded plate surfaces are protected against corrosion,fatigue strength could decrease with time to that of a weld.sp.infoAnnex B Fatigue Detail Tables with CommentaryB.2.WELDED BUILT-UP SECTIONS (EN 1993-1-9,TABLE 8.2) Commentary Usually welding quality level B Usually welding quality level B.Butt weld case not shown in figures.The term butt weld is in this case unclear.It means T-butt joints as defined in EN 1993-1-8,but contrarly to the standard,the weld is made from one side only.Requirements

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Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextAnnex B Fatigue Detail Tables with Commentary

Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextAnnex B Fatigue Detail Tables with Commentary

B.2.WELDED BUILT-UP SECTIONS (EN 1993-1-9,TABLE 8.2) Commentary Usually welding quality level B Usually welding quality level B.Butt weld case not shown in figures.The term butt weld is in this case unclear.It means T-butt joints as defined in EN 1993-1-8,but contrarly to the standard,the weld is made from one side only.Requirementssp.infoFatigue Strength of Fillet-Welded Transverse Stiffeners FATIGUE STRENGTH OF FILLET-WELDED TRANSVERSE STIFFENERS WITH UNDERCUTS by Joseph R.Spadea and Karl H.Frank Research Report 0-4178-1 Research Project 0-4178 FILLET WELD DETAILING FOR STIFFENER conducted for the Texas Department of Transportation in cooperation with the U.S.Department of Transportation Federal Highway Administration by the

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Fatigue Failure ofWelded Joints

Fatigue Failure ofWelded Joints

• Underideal conditions fatigue strength increases with yield strength,but this is not true ofwelded joints • Weldl~dspecimens ofhigh-tensilesteels and lower strength mild steel display similar S-N curves.• The advantage ofhigh-strengthsteels is reduced when fatigue is a consideration if design stresses are limited by cyclic life p15 (sp.infoFATIGUE STRENGTH ASSESSMENT OF WELDED JOINTSThe fatigue strength of welded joints was determined by taking into account the stress concentration factor,the hardness in HAZ,residual stress and misalignment.The results obtained by these calculations are compared with experimental results.Keywords welded joint,fatigue strength,weld toe radius,stress concentration factor 1.INTRODUCTION

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Misalignment in Transverse Fatigue Loaded Butt Welds - TWI

Misalignment in Transverse Fatigue Loaded Butt Welds - TWI

Back to Research Reports Corrosion of FSW High Strength Aluminium Alloys after PWHT 1133/2020 Development of a Single Use FSW Tool for Ti-6Al-4V 1140/2020 Dissimilar Joining of Steel to Aluminium for Automotive Applications 1142/2020 Fatigue of High Strength Steel Mooring Chain in Seawater 1135/2020 Fracture of Pipeline Steel in a Sour Environment at Ambient Temperature 1132/2020sp.infoEFFECT OF WELDING ON THE AXIAL FATIGUE3.2 Fatogue Tests of As-Welded Transverse Butt-Welded Joints.17 3.3 Fatigue Tests of Heat-Treated Transverse Butt-Weld.ed Jo i n ts • • • • • 20 304 Fatigue Tests of Transverse Butt-Welded Joints with Reinforcement Removed •• 0 0 0 0 0 • 0 0 0 0 •• 0 • 0 21 305 Fatigue Tests of Transverse Butt-Welded Joints wnth

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Guidance Note Fatigue quality of welded details No.2

Guidance Note Fatigue quality of welded details No.2

If the location of a joint is subject to high fatigue loads,the designer could specify that the joint is welded from both sides and the weld ground flush.This would increase the EN 1993-1-9 detail category to 112,i.e.the reference value of the fatigue strength at 2 million cycles ∆σc would be 112 N/mm2 and the QSC for the detail can besp.infoeFatigue - International Institute of WeldingWeld classes are defined as the fatigue strength at 2x10 6 cycles.Thus a FAT Class of 100 will have an allowable stress of 100 MPa for a life of 2x10 6 cycles.Fatigue Resistance Curves.The curves shown above are valid for structural steel welds.They represent 95% probability of survival.Fatigue lives are not dependant on either the

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FATIGUE IMPROVEMENT TECHNIQUES FOR WELDS

FATIGUE IMPROVEMENT TECHNIQUES FOR WELDS

as-welded fatigue strength to that of ground welds.The results are better for the burr ground welds – probably ASTM A-514 is a typical structural steel with a specified minimum yield strength of 100 ksi at room be possible to apply localized stress relief to only the welded jointssp.info2.Design of Welded Connections - American Weldinggroove welded joints and the preparation of material re-quired to make them.Both width and thickness of steel backing shall be detailed.2.2.4.1 Symbols.It is recommended that contract de-sign drawings show complete joint penetration or partial joint penetration groove weld requirements without spec-ifying the groove weld dimensions.The

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Fatigue strength of misaligned non-load-carrying cruciform

Fatigue strength of misaligned non-load-carrying cruciform

Whereas it is well-known in the prior art that increasing the static strength capacity of steel material does not contribute to high fatigue strength in welded components [,,] unless specific post-weld treatments,see e.g.[5,6],are employed to improve the fatigue strength.On the other hand,a decrease in plate thickness predisposes UHSS sp.infoWeld Design and SpecificationFatigue Strength 1 1000 1,000,000 Endurance Limit Static Tensile Strength Low Cycle High Cycle Infinite Life.6 Endurance Limit IFor Steel • Endurance Limit = 0.5 * Tensile Strength or 100 kpsi,which ever is lower.IFor Aluminum • No endurance limit (cannot have an infinite life) 7 Factors for Fatigue Stress Analysis Type of Weld Stress

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Weld Stress Calculations - Roy Mech

Weld Stress Calculations - Roy Mech

For butt welded joints subject to bending the butt weld stresses result from a tensile/compressive stress σ b and a direct shear stress τ s.In these cases the design basis stress should be σ r = Sqrt (σ b 2 + 4 τ s 2) For Fillet welded joints subject to bending the stresses in the fillet welds are all shear stresses.From bending τ b and sp.infoFATIGUE STRENGTH OF MISALIGNED CRUCIFORM AND BUTT JOINTSThe stress intensity factors for toe and root cracks as calculated by the finite element method for cruciform joint is presented.Crack growth data for welds in steel to NVE 36 is presented,and applied in an analysis of transverse,load-carrying welds.From this,the fatigue strength of misaligned joints

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Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextFatigue Failure ofWelded Joints

Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextFatigue Failure ofWelded Joints

• Underideal conditions fatigue strength increases with yield strength,but this is not true ofwelded joints • Weldl~dspecimens ofhigh-tensilesteels and lower strength mild steel display similar S-N curves.• The advantage ofhigh-strengthsteels is reduced when fatigue is a consideration if design stresses are limited by cyclic life p15 (sp.infoFatigue Strength of Fillet-Welded Transverse Stiffeners FATIGUE STRENGTH OF FILLET-WELDED TRANSVERSE STIFFENERS WITH UNDERCUTS by Joseph R.Spadea and Karl H.Frank Research Report 0-4178-1 Research Project 0-4178 FILLET WELD DETAILING FOR STIFFENER conducted for the Texas Department of Transportation in cooperation with the U.S.Department of Transportation Federal Highway Administration by the

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The fatigue strength of base material and butt welds made

The fatigue strength of base material and butt welds made

Laboratory tests have been performed in order to study the fatigue strength of base materials and as welded butt weld joints made of S690 and S1100.Both VHSS base material and transverse butt weld characteristic fatigue strength lays well above the values according to EN1993-1-9 (2005),mainly because of higher slope in S-N curves Publicationsp.infoMisalignment in Transverse Fatigue Loaded Butt Welds - TWIBack to Research Reports Corrosion of FSW High Strength Aluminium Alloys after PWHT 1133/2020 Development of a Single Use FSW Tool for Ti-6Al-4V 1140/2020 Dissimilar Joining of Steel to Aluminium for Automotive Applications 1142/2020 Fatigue of High Strength Steel Mooring Chain in Seawater 1135/2020 Fracture of Pipeline Steel in a Sour Environment at Ambient Temperature 1132/2020

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FATIGUE STRENGTH OF MISALIGNED CRUCIFORM AND BUTT JOINTS

FATIGUE STRENGTH OF MISALIGNED CRUCIFORM AND BUTT JOINTS

The stress intensity factors for toe and root cracks as calculated by the finite element method for cruciform joint is presented.Crack growth data for welds in steel to NVE 36 is presented,and applied in an analysis of transverse,load-carrying welds.From this,the fatigue strength of misaligned jointssp.infoFATIGUE STRENGTH ASSESSMENT OF WELDED JOINTSThe fatigue strength of welded joints was determined by taking into account the stress concentration factor,the hardness in HAZ,residual stress and misalignment.The results obtained by these calculations are compared with experimental results.Keywords welded joint,fatigue strength,weld toe radius,stress concentration factor 1.INTRODUCTION

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Studies on Fatigue Life of Typical Welded and Bolted Steel

Studies on Fatigue Life of Typical Welded and Bolted Steel

The study shows that the fatigue strength of welded joints of S700MC steel grade after HiFIT treatment is much more higher in each cases than the fatigue strength of non-treated welded joints.sp.infoGuidance Note Fatigue quality of welded details No.2If the location of a joint is subject to high fatigue loads,the designer could specify that the joint is welded from both sides and the weld ground flush.This would increase the EN 1993-1-9 detail category to 112,i.e.the reference value of the fatigue strength at 2 million cycles ∆σc would be 112 N/mm2 and the QSC for the detail can be

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EFFECT OF WELDING ON THE AXIAL FATIGUE

EFFECT OF WELDING ON THE AXIAL FATIGUE

3.2 Fatogue Tests of As-Welded Transverse Butt-Welded Joints.17 3.3 Fatigue Tests of Heat-Treated Transverse Butt-Weld.ed Jo i n ts • • • • • 20 304 Fatigue Tests of Transverse Butt-Welded Joints with Reinforcement Removed •• 0 0 0 0 0 • 0 0 0 0 •• 0 • 0 21 305 Fatigue Tests of Transverse Butt-Welded Joints wnthsp.infoWeld Design and SpecificationFatigue Strength 1 1000 1,000,000 Endurance Limit Static Tensile Strength Low Cycle High Cycle Infinite Life.6 Endurance Limit IFor Steel • Endurance Limit = 0.5 * Tensile Strength or 100 kpsi,which ever is lower.IFor Aluminum • No endurance limit (cannot have an infinite life) 7 Factors for Fatigue Stress Analysis Type of Weld Stress

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ISO/TR 14345:2012(en),Fatigue ? Fatigue testing of welded

ISO/TR 14345:2012(en),Fatigue ? Fatigue testing of welded

M addox,S.J.Fitness-for-purpose assessment of misalignment in transverse butt welds subject to fatigue loading.IIW document XIII-1181-85,1985 [8] L ebaillif,D.,H uther,I.,S error,M.,R echo,N.Fatigue crack initiation and propagation A complete process compared with experiments on industrial welded structure.sp.infoFatigue-Strength-Reduction Factors for Welds in Pressure Apr 17,2000·Fatigue-strength-reduction factors (FSRFs) are used in the design of pressure vessels and piping subjected to cyclic loading.This paper reviews the background and basis of FSRFs that are used in the ASME Boiler and Pressure Vessel Code,focusing on weld joints in Class 1 nuclear pressure vessels and piping.

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Fatigue assessment of weld toe and weld root failures in

Fatigue assessment of weld toe and weld root failures in

The peak stress method is an engineering,finite element (FE)-oriented application of the local approach based on the notch-stress intensity factors (NSIFs),which quantify the intensity of the local,linear elastic stress field at the potential crack initiation points (either the weld toe or the weld root).All effects due to plate thickness,joint shape and loading mode (axial or bending sp.infoThe fatigue strength of base material and butt welds made Laboratory tests have been performed in order to study the fatigue strength of base materials and as welded butt weld joints made of S690 and S1100.Both VHSS base material and transverse butt weld characteristic fatigue strength lays well above the values according to EN1993-1-9 (2005),mainly because of higher slope in S-N curves

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