An investigation of the dynamic separation of spot welds

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Thierry Guimberteau - Profile - SAE International

The authors have proposed a new formulation to characterize the mechanical properties of spot welds under dynamic loadings including separation.In this paper,the authors primarily discuss a systematic procedure to determine the parameters of the proposed spot weld model from test data using a Design of Experiment (DOE) approach and Spot Welding Characteristics of HSLA Steel forspot welding (Ref.1) and postweld tempering is required.The following investigation was therefore under An investigation of the dynamic separation of spot welds#173; taken to determine the conditions for producing strong,ductile spot welds Fig.3 Macrostructure of typical spot weld in VAN-80 Steel.Etchant; 2% Nital; X8,reduced 50% 400 a 350- An investigation of the dynamic separation of spot weldslt;A V} LU o 300 An investigation of the dynamic separation of spot welds#163;E An investigation of the dynamic separation of spot weldslt; X ' h-Ul a 250 L3 3 Z 200 150 _Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextCharacterization of Spot Welding Behavior by Dynamic range of acceptable spot weld parame An investigation of the dynamic separation of spot welds#173; ters must be made.One method for determining the range over which acceptable spot welds are obtained on plain carbon sheet is through the use of spot weld lobe curves.A typical spot weld lobe curve is presented in Fig.2.A lobe curve is a graphical representation of ranges of welding variables over which

Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextDynamic Separation of Resistance Spot Welded Joints Part

Aug 25,2009 An investigation of the dynamic separation of spot welds#0183;The ultimate strength of resistance spot welded joints fabricated from a wide range of steel grades,weld button size,and sheet thickness are reported for lap-shear and cross-tension specimens subjected to quasi-static and impact loading conditions.Test data are analyzed with respect to energy,impact speed,and loading rate.Loading rate is identified as a critical,test system independent Some results are removed in response to a notice of local law requirement.For more information,please see here.PROCESS DEVELOPMENT FOR MULTI-DISCIPLINARYof the spot weld forces shows no critical increase for the reduced configuration.Example 2 In a second investigation a single side crash load case was investigated and spot weld lines in the whole impact range of the barrier are selected for optimization.As shown in Figure 10,a total number of 14 variables are used for the problem definition.

PROCESS DEVELOPMENT FOR MULTI-DISCIPLINARY

of the spot weld forces shows no critical increase for the reduced configuration.Example 2 In a second investigation a single side crash load case was investigated and spot weld lines in the whole impact range of the barrier are selected for optimization.As shown in Figure 10,a total number of 14 variables are used for the problem definition.New technology for measuring dynamic resistance and Jul 13,2000 An investigation of the dynamic separation of spot welds#0183;The dynamic resistance signal,which is closely related to the nugget formation of the weld,has been used very effectively for this purpose,together with the electrode displacement signal.However,in previous research,the dynamic resistance was calculated using process parameters that were measured in the secondary circuit of the welding Mechanical and microstructural investigation of friction Mar 01,2011 An investigation of the dynamic separation of spot welds#0183;Friction spot welding (FSpW) is a solid state welding process suitable for spot joining lightweight low melting point materials like aluminium and magnesium alloys.The process is performed by plunging a rotating three-piece tool (clamping ring,sleeve and pin) that creates a connection between sheets in overlap configuration by means of

Investigations of spot welds quality based on ultrasonic

Key words spot welds,ultrasonic quality control.Investigations of spot welds quality based on ultrasonic techniques .A.Ambroziak a*,M.Korzeniowski a,P.Kustro a.a Institute of Production Engineering and Automation of Wroclaw University of Technology .ul.ukasiewicza 3/5 50-371 Wrocaw,* E-mail address [email protected] This article contains some information about Investigations of spot welds quality based on ultrasonic Key words spot welds,ultrasonic quality control.Investigations of spot welds quality based on ultrasonic techniques .A.Ambroziak a*,M.Korzeniowski a,P.Kustro a.a Institute of Production Engineering and Automation of Wroclaw University of Technology .ul.ukasiewicza 3/5 50-371 Wrocaw,* E-mail address [email protected] This article contains some information about Investigations of Spot Weld Material CharacterizationSpot welding is the primary joining method used for the construction of the automotive body structure made of steel.A major challenge in the crash simulation today is the lack of a simple yet reliable modeling approach to characterize spot weld separation.Various approaches for Numerical simulation of spot welding has

Investigation of the use of Dynamic Resistance in Adaptive

The pursuit of real time quality detection of a resistance spot weld (RSW) in the automotive industry has progressed alongside technology.With the capability of modern controllers to collect real-time data from the welding procedure on a millisecond scale,the use of the dynamicInvestigation of the use of Dynamic Resistance in Adaptive The pursuit of real time quality detection of a resistance spot weld (RSW) in the automotive industry has progressed alongside technology.With the capability of modern controllers to collect real-time data from the welding procedure on a millisecond scale,the use of the dynamicInvestigation of Resistance Spot Weld Failure in Tailored A new mechanical test,termed the Caiman,was developed to study groups of welds under both static and dynamic Mode I structural loading.Channel sections comprising of fully quenched material as well as hot stamped components with tailored,lower strength flanges were joined via spot welding.

Investigation of Resistance Spot Weld Failure in Tailored

A new mechanical test,termed the Caiman,was developed to study groups of welds under both static and dynamic Mode I structural loading.Channel sections comprising of fully quenched material as well as hot stamped components with tailored,lower strength flanges were joined via spot welding.Investigation of Material Models for Laser Welds inThe weld for which a new material model will be developed is the laser welded joint also known as Robscan joint [1].Unlike the spot welds where the diameter of the spot weld is basically characterized by the sheet thickness,a single laser weld can have any shape and size depending on the desired load carrying capability.Investigation of Material Models for Laser Welds inThe weld for which a new material model will be developed is the laser welded joint also known as Robscan joint [1].Unlike the spot welds where the diameter of the spot weld is basically characterized by the sheet thickness,a single laser weld can have any shape and size depending on the desired load carrying capability.

Investigation of Material Models for Laser Welds in Crash

The weld for which a new material model will be developed is the laser welded joint also known as Robscan joint [1].Unlike the spot welds where the diameter of the spot weld is basically characterized by the sheet thickness,a single laser weld can have any shape and size depending on the desired load carrying capability.IMPACT BEHAVIOUR OF SPOT-WELDED THIN-WALLEDheight =160 mm,shown in Fig.1,subjected to axial,dynamic (impact) compressive load.The first objective of the research was the investigation into an influence of spot welds on the crushing behavior of the frustum.Particularly,situation,number of spot welds and their diameter were taken into account inExperimental study on deformation and fracture of Oct 01,2020 An investigation of the dynamic separation of spot welds#0183;B.H.Ma,C.L.Fan,D.N.Chen,H.R.Wang,F.H ZhouAn investigation of the dynamic separation of spot welds under plane tensile pulses J Appl Phys,116

Experimental study on deformation and fracture of

Oct 01,2020 An investigation of the dynamic separation of spot welds#0183;B.H.Ma,C.L.Fan,D.N.Chen,H.R.Wang,F.H ZhouAn investigation of the dynamic separation of spot welds under plane tensile pulses J Appl Phys,116Experimental Investigation of Resistance Spot weldingHigh Strength Steels spot welds (S.Dancette et al,2011) [7].Contact conditions on nugget development during resistance spot welding of Zn coated steel sheets using rounded tip electrodes and compared to the flatted tip electrode,analysis has to be carryout (R.Raoelison,A.Fuentes,2012) [8].RSW process experimental work has been carExperimental Investigation of Resistance Spot weldingHigh Strength Steels spot welds (S.Dancette et al,2011) [7].Contact conditions on nugget development during resistance spot welding of Zn coated steel sheets using rounded tip electrodes and compared to the flatted tip electrode,analysis has to be carryout (R.Raoelison,A.Fuentes,2012) [8].RSW process experimental work has been car

EFFECT OF TENSILE SPEED ON THE FAILURE LOAD OF A

An investigation of the dynamic separation of spot welds under plane tensile pulses Bohan Ma,Chunlei Fan,Danian Chen,Huanran Wang and FenghuaEFFECT OF TENSILE SPEED ON THE FAILURE LOAD OF A SPOT WELDAn investigation of the dynamic separation of spot welds under plane tensile pulses Bohan Ma,Chunlei Fan,Danian Chen,Huanran Wang and FenghuaDynamic Separation of Resistance Spot Welded Joints Part Dynamic lap-shear tests of a spot weld in SPRC340R were conducted with different tensile speeds ranging from 5 An investigation of the dynamic separation of spot welds#215;10-5 m/sec to 5.0 m/sec.Dynamic effects on the failure load of a spot weld are

Dynamic Separation of Resistance Spot Welded Joints Part

Aug 18,2009 An investigation of the dynamic separation of spot welds#0183;An analysis for an impact system is presented.The results are then used to interpret the test data from dynamic separation of resistance spot welded joints.In this Part I of the investigation emphasis is placed on the design consideration,development of a test system and verification of the design from actual test data obtained from the test system.DYNAMIC MODELING OF SPOT WELDS USING THINHamid Ahmadian 1 DYNAMIC MODELING OF SPOT WELDS USING THIN LAYER INTERFACE THEORY H.Ahmadian 1,H.Jalali1,JE Mottershead 2,MI Friswell3 1Iran University of Science and Technology,Faculty of Mechanical Engineering,Narmak,Tehran,16844,IRAN 2Liverpool University,Department of Engineering,Liverpool,L69 3BX,UK 3University of Bristol,Department of AerospaceCited by 8Publish Year 2010Author Y.J.Chao,Y.J.Chao,K.Wang,K.W.Miller,X.-K.ZhuModeling and Testing of Spot Welds under Dynamic Impact An engineering failure criterion is proposed to characterize the dynamic failure loads of spot welds for engineering applications.The failure load is expressed as a function of the tensile strength of the base metal,the nugget size,the sheet thickness,the separation speed,and empirical coefficients for a given welding schedule.

Cited by 4Publish Year 2014Author Bohan Ma,Chunlei Fan,Danian Chen,Huanran Wang,Fenghua ZhouAn investigation of the dynamic separation of spot welds

We performed ultra-high-speed tests for purely opening spot welds using plane tensile pulses.A gun system generated a parallel impact of a projectile plate onto a welded plate.Induced by the interactions of the release waves,the welded plate opened purely under the plane tensile pulses.We used the laser velocity interferometer system for any reflector to measure the velocity histories of Cited by 4Publish Year 2014Author Bohan Ma,Chunlei Fan,Danian Chen,Huanran Wang,Fenghua ZhouAn investigation of the dynamic separation of spot welds Request PDF An investigation of the dynamic separation of spot welds under plane tensile pulses We performed ultra-high-speed tests for purely opening spot welds using plane tensile pulses.A Characterization of Spot Welding Behavior by Dynamic range of acceptable spot weld parame An investigation of the dynamic separation of spot welds#173; ters must be made.One method for determining the range over which acceptable spot welds are obtained on plain carbon sheet is through the use of spot weld lobe curves.A typical spot weld lobe curve is presented in Fig.2.A lobe curve is a graphical representation of ranges of welding variables over which

Can resistance spot welds be non-destructively tested? - TWI

Modern systems also provide a comprehensive data logging capability and the weld test data can be linked directly to the part drawings.BS1140 - British Standard specification for Resistance spot welding of uncoated and coated low carbon steel.ISO 10447 - Welding - Peel and chisel testing of resistance spot,projection and seam welds.Can resistance spot welds be non-destructively tested? - TWIModern systems also provide a comprehensive data logging capability and the weld test data can be linked directly to the part drawings.BS1140 - British Standard specification for Resistance spot welding of uncoated and coated low carbon steel.ISO 10447 - Welding - Peel and chisel testing of resistance spot,projection and seam welds.An investigation of the dynamic separation of spot welds An investigation of the dynamic separation of spot welds under plane tensile pulses Journal of Applied Physics 116,053503 (2014); https Pouranvari,S.P.H.Marashi,and D.S.Safanama, Failure mode transition in AHSS resistance spot welds.Part II Experimental investigation and model validation, Mater.Sci.

An Investigation on Spot Weld Modelling for Crash

investigations on spot weld failure behaviour.A suitable model that is able to represent the failure behaviour of spot welds in BiW structures and that is independent of mesh sensitivity has been developed.An elasto-plastic material model based on von Mises plasticity (MAT_100) has been further enhanced with a new failure criterion.A Review on Effect of Spot Weld Parameters on SpotThe previous research work describes structural investigation; finite element analysis work and experimental investigation.The overview of some of literature is given below.Donders S.et al [1] studied the effect of spot weld failure on dynamic vehicle performance.The impact of spot weld qualityA Review on Effect of Spot Weld Parameters on SpotThe previous research work describes structural investigation; finite element analysis work and experimental investigation.The overview of some of literature is given below.Donders S.et al [1] studied the effect of spot weld failure on dynamic vehicle performance.The impact of spot weld quality

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