The influence of adhesive viscosity and elastic modulus on laser spot weld bonding process

Wang, Tao; Ma, Yinan; Chen, Yanbin; Li, Liqun; Wang, Mingmao

doi:10.1016/j.ijadhadh.2013.12.003

Cited by 20 publications

(3 citation statements)

References 15 publications

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“…The flow-in method consists of spot-welding the joints followed by adhesive filling by capillarity and curing under heat. The weld-through technique, used in this work, consists of adhesively-bonding the adherends followed by spot-welding during the working time (WT) of the adhesive [20]. Thus, the adhesives were selected such that their WT enables spot-welding to be performed before adhesive curing.…”

Section: Methodsmentioning

confidence: 99%

Adhesive selection for hybrid spot-welded/bonded single-lap joints: Experimentation and numerical analysis

Marques

Campilho

Silva

et al. 2016

Composites Part B: Engineering

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Section: Methodsmentioning

confidence: 99%

Adhesive selection for hybrid spot-welded/bonded single-lap joints: Experimentation and numerical analysis

Marques

Campilho

Silva

et al. 2016

Composites Part B: Engineering

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“…De et al 9) reported a heat flow finite element model of laser spot-welding process, the results showed that the keyhole mode was stimulated using either a high laser power and low on-time or a low laser power and high ontime. Tao et al 10) discussed the effect of adhesive on the process of laser spot weld-bonding. It is found that the higher the viscosity of the adhesive, the harder to discharge the gas.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Fatigue Properties of Laser Spot Weld-Bonding DP590 Dual-Phase Steel Joints

Zhao

Zeng

2021

Mater. Trans.

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In this paper, cold-rolled DP590 dual-phase steel sheets with 1.5 mm thickness were weld-bonded by a fiber laser. In order to study the tensile shear strength of laser spot-welding and laser weld-bonding joints, the orthogonal test was designed with three parameters: welding power, welding time and off-focus value. The tensile shear test and the fatigue test were carried out. The vaporization of the adhesive and its disruption to the molten pool during the weld-bonding process were simulated. The results show that the tensile and fatigue strength of the laser weld-bonding joints are higher than the laser spot-welding joints. Simulation results demonstrate that the perforation is caused by the gas produced by the gasified adhesive being discharged from the center of the molten pool under high pressure.

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“…Measuring viscosity is important for assessing the quality of liquid products [ 1 , 2 , 3 , 4 , 5 ], optimizing the performance of microfluidic devices [ 6 , 7 ], and monitoring the viscosity of clinical fluids as a hemodynamic biomarker [ 8 ]. Testing the viscosity of liquid products is an indispensable process to maximize production efficiency and to screen formulation candidates across diverse industrial fields [ 1 , 2 , 3 , 4 , 5 ]. Whole blood viscosity has a significant correlation with Alzheimer’s disease and can be used as a potential biomarker for the monitoring and control of the disease [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

3D-Printed Capillary Circuits for Calibration-Free Viscosity Measurement of Newtonian and Non-Newtonian Fluids

Choi

2018

Micromachines

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Measuring viscosity is important for the quality assurance of liquid products, as well as for monitoring the viscosity of clinical fluids as a potential hemodynamic biomarker. However, conventional viscometers and their microfluidic counterparts typically rely on bulky and expensive equipment, and lack the ability for rapid and field-deployable viscosity analysis. To address these challenges, we describe 3D-printed capillary circuits (3D-CCs) for equipment- and calibration-free viscosity measurement of Newtonian and non-Newtonian fluids. A syringe, modified with an air chamber serving as a pressure buffer, generates and maintains a set pressure to drive the pressure-driven flows of test fluids through the 3D-CCs. The graduated fluidic chambers of the 3D-CCs serve as a flow meter, enabling simple measurement of the flow rates of the test fluids flowing through the 3D-CCs, which is readable with the naked eye. The viscosities of the test fluids can be simply calculated from the measured flow rates under a set pressure condition without the need for peripheral equipment and calibration. We demonstrate the multiplexing capability of the 3D-CC platform by simultaneously measuring different Newtonian-fluid samples. Further, we demonstrate that the shear-rate dependence of the viscosity of a non-Newtonian fluid can be analyzed simultaneously under various shear-rate conditions with the 3D-CC platform.

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The influence of adhesive viscosity and elastic modulus on laser spot weld bonding process

Cited by 20 publications

References 15 publications

Adhesive selection for hybrid spot-welded/bonded single-lap joints: Experimentation and numerical analysis

Adhesive selection for hybrid spot-welded/bonded single-lap joints: Experimentation and numerical analysis

Numerical Simulation and Fatigue Properties of Laser Spot Weld-Bonding DP590 Dual-Phase Steel Joints

3D-Printed Capillary Circuits for Calibration-Free Viscosity Measurement of Newtonian and Non-Newtonian Fluids

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