Numerical and experimental investigation on laser transmission welding of fiberglass-doped PP and ABS

Chen, Zhi; Huang, Yu; Han, Fenglin; Tang, Duo

doi:10.1016/j.jmapro.2017.10.013

Cited by 28 publications

(13 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Elium ® resin and mould properties used in the FE model are shown in Table 2. The density of Elium ® resin and the thermal capacity was obtained from data reported in the literature [28,29], while the thermal conductivity was obtained by applying the mixture rule [30], considering the value for the glass fibres equal to 0.18 W/(m*K). Figure 1 shows the edges where boundary conditions were applied in the model.…”

Section: Finite Elements Analysismentioning

confidence: 99%

An Efficient Thermal Cure Profile for Thick Parts Made by Reactive Processing of Acrylic Thermoplastic Composites

Palmieri

Petriccione²,

Tommaso³

et al. 2021

J. Compos. Sci.

View full text Add to dashboard Cite

The process of curing of large thick composite parts needs attention regarding the formation of residual stresses. Similarly, novel reactive thermoplastics need investigating to produce an efficient thermal cure profile that decreases the risk of warpage and residual stress. In this work, the polymerization kinetics of the Elium resin system is investigated by differential scanning calorimetry (DSC) tests, the analysis of thermo-grams, and the parameters of Kamal and Sourour’s semi-empirical model. A numerical model based on finite elements was set up to reproduce the temperature fields during part consolidation. Several processing conditions were investigated (dwell temperature, environment, heat exchange) in order to predict the thermal gradient within the part. The optimal cure profile was identified as a function of process parameters with the aim of minimizing the thermal gradient within the composite element. The analysis revealed that, for the reactive thermoplastic Elium, the consolidation in facilities with high thermal exchange may increase the risk of residual stresses within the parts, erasing the advantage of short cure cycles.

show abstract

Section: Finite Elements Analysismentioning

confidence: 99%

An Efficient Thermal Cure Profile for Thick Parts Made by Reactive Processing of Acrylic Thermoplastic Composites

Palmieri

Petriccione²,

Tommaso³

et al. 2021

J. Compos. Sci.

View full text Add to dashboard Cite

show abstract

“…A cohesive joining forms between plastics after solidification [7,8]. In this process, the heat generation caused by laser and materials interaction is crucial for high-quality welding [9].…”

Section: Introductionmentioning

confidence: 99%

“…To investigate the effects of process parameters on the LTW of PA 6, Prabhakaran et al [15] solved the one-dimensional unsteady-state heat conduction problem by numerical simulation. Chen et al [9] established a hybrid heat source model for predicting the temperature distribution during LTW of fiberglass-doped PP and ABS. The challenge mainly arises from the complex surroundings.…”

Section: Introductionmentioning

confidence: 99%

An integrated methodology for estimating the interface temperature and effects of powder diameters in laser transmission welding process

Qiao

Chen

et al. 2023

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

The powder diameter affects the heat generation and further influences the quality of weldments when the MZA powder is used as laser-absorbents to carry out laser transmission welding (LTW). It is difficult to measure the temperature due to its extremely short duration. A mathematical model considering the multiple reflections of metal powder is established to predict heat generation. The mathematical model is verified and then used to describe the influence of line energy density and powder diameter on the temperature profile of the LTW process. The results demonstrate that the temperature from experiments and simulation are consistent. Therefore, the established model is suitable to predict the heat generation of metal powder laser-absorbents in the LTW process.

show abstract

“…Diode laser for LTW is considered due to its capability to encapsulate sensitive electronic housings without any damage compared to other techniques such as ultrasonic welding. Furthermore, LTW is a non-contact and non-contaminant process involving an optically transparent part (LT) for a given laser λ to pass through and an absorbing surface (LA) that melts and forms a hermetic sealing [ 35 , 36 , 37 , 38 , 39 ]. Preferential deposition of energy is required in the interfacial zone, which eventually becomes the weld zone.…”

Section: Introductionmentioning

confidence: 99%

Laser Transmission Welding of Semi-Crystalline Polymers and Their Composites: A Critical Review

et al. 2021

View full text Add to dashboard Cite

The present review provides an overview of the current status and future perspectives of one of the smart manufacturing techniques of Industry 4.0, laser transmission welding (LTW) of semi-crystalline (SC) polymers and their composites. It is one of the most versatile techniques used to join polymeric components with varying thickness and configuration using a laser source. This article focuses on various parameters and phenomena such as inter-diffusion and microstructural changes that occur due to the laser interaction with SC polymers (specifically polypropylene). The effect of carbon black (size, shape, structure, thermal conductivity, dispersion, distribution, etc.) in the laser absorptive part and nucleating agent in the laser transmissive part and its processing conditions impacting the weld strength is discussed in detail. Among the laser parameters, laser power, scanning speed and clamping pressure are considered to be the most critical. This review also highlights innovative ideas such as incorporating metal as an absorber in the laser absorptive part, hybrid carbon black, dual clamping device, and an increasing number of scans and patterns. Finally, there is presented an overview of the essential characterisation techniques that help to determine the weld quality. This review demonstrates that LTW has excellent potential in polymer joining applications and the challenges including the cost-effectiveness, innovative ideas to provide state-of-the-art design and fabrication of complex products in a wide range of applications. This work will be of keen interest to other researchers and practitioners who are involved in the welding of polymers.

show abstract

Numerical and experimental investigation on laser transmission welding of fiberglass-doped PP and ABS

Cited by 28 publications

References 16 publications

An Efficient Thermal Cure Profile for Thick Parts Made by Reactive Processing of Acrylic Thermoplastic Composites

An Efficient Thermal Cure Profile for Thick Parts Made by Reactive Processing of Acrylic Thermoplastic Composites

An integrated methodology for estimating the interface temperature and effects of powder diameters in laser transmission welding process

Laser Transmission Welding of Semi-Crystalline Polymers and Their Composites: A Critical Review

Contact Info

Product

Resources

About