Laser welding of plastics (review)

Москвитин, Г. В.; Polyakov, A. F.; Birger, E. M.

doi:10.1080/09507116.2012.753282

Cited by 20 publications

(17 citation statements)

References 17 publications

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“…24 [344]. Moskvitin et al [345] provided an overview of laser welding of plastics in recent years. In order to properly model laser welding processes, one must consider the laser-beam absorption, particularly Fresnel absorption via multiple reflections if a keyhole is formed, fluid flow in the molten pool, recoil pressure generation based on temperature, vapor, and plasma formation with their interaction with incident laser, assist gas effects, keyhole shape tracking, etc., as illustrated in Fig.…”

Section: -16 / Vol 142 November 2020mentioning

confidence: 99%

“…However, these models ignored melting and fluid motions during welding. Recently, Ai et al [345] using the computational fluid dynamics model considering melting and fluid flow were able to show that the molten pool with a vortex flow pattern formed only in the plastic side is significantly affected by welding parameters and accurately predict the fusion zone with the occurrence of porosity.…”

Section: -16 / Vol 142 November 2020mentioning

confidence: 99%

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Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Shin

Lei

et al. 2020

Journal of Manufacturing Science and Engineering

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Recent years have witnessed a rapid growth of the laser market. Figure 1 shows the recent revenues of laser sales with about 50% increase in revenue over recent four years , which far exceeds the growth of other industrial sectors. More than one third of this revenue belongs to the category of laser materials processing arena. Undoubtedly, lasers have been playing increasingly important roles in various industrial manufacturing sectors. This article is to capture some of important developments in the rapidly growing areas of laser-based manufacturing and materials processing and also describe important technological issues pertaining to various laser-based manufacturing processes. The topics to be covered in this paper include more popularly used processes in industry such as laser additive manufacturing, laser-assisted machining, laser micromachining, laser forming, laser surface texturing, laser welding, and laser shock peening, although there are several additional areas of laser applications. In each section, a brief overview of the process is provided, followed by critical issues in implementing the process, such as properties, predictive modeling, and process monitoring, and finally some remarks on future issues that can guide researchers and practitioners.

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Section: -16 / Vol 142 November 2020mentioning

confidence: 99%

Section: -16 / Vol 142 November 2020mentioning

confidence: 99%

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Shin

Lei

et al. 2020

Journal of Manufacturing Science and Engineering

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“…The usage of these materials is growing for various industrial needs as mentioned earlier [50][51][52][53]. Laser transmission welding (LTW) is effective and efficient for welding of acrylics or other polymer materials [54][55][56][57][58][59]. Parametric studies related to various aspects of joining of acrylics by LTW can make sound knowledge base, from which industrial persons may select optimal parametric settings to produce economically and predictably desired weld joint quality performances.…”

Section: Literature Surveymentioning

confidence: 99%

Parametric Studies on Transmission Laser Welding of Acrylics

Rudrapati¹

2020

Acrylate Polymers for Advanced Applications

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Due to limitations of injection molding of polymer/plastic materials, complex plastic parts are often assembled from two or more injection-molded components. Joining of polymers can be achieved by chemical-based technologies and thermal methods such as welding. Welding technique is one of the important manufacturing routes that can be used to refine product design and reduce production cost. Plastic welding processes typically involve heating the joining faces to induce localized melting and subsequently applying pressure to cause molecular diffusion at the molten interface, which produces a solid weld upon cooling. The need for an effective welding process that is fast, accurate, and with no relative part movement has fueled the development of laser-transmission welding (LTW) technology. LTW is an innovative joining process for acrylate materials. The quality of weld highly depends on correct selection of process parameters in LTW. The systematic study and analysis are required to conduct LTE process economically and efficiently. In the present chapter, current prospects of applications of acrylates and joining of them using LTW has been analyzed. The main emphasis has been given to analyze the variations of quality performance characteristics with varying input welding factors and concluding remarks has been drawn from present work. From this study, it is observed that acrylics are future innovative industrial materials, which need to be joined to create complex features on them. Welding of acrylics using LTW to achieve better and more economical weld performance is still under continuous research by scientists/industrialists.

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“…LWT is particularly efficient in those applications where joined components require high precision and careful handling (automotive, electronic components) or sterile conditions (medical devices, food packaging) . LWT is also suitable to join components with complex geometries which result especially difficult or even impossible to weld by using any other methodology . Currently, the laser welding of thermoplastic materials is a field which is constantly improving in order to cover a larger number of applications thanks to the work of technologists and the rapid advances in laser technology .…”

Section: Introductionmentioning

confidence: 99%

“…LWT is also suitable to join components with complex geometries which result especially difficult or even impossible to weld by using any other methodology . Currently, the laser welding of thermoplastic materials is a field which is constantly improving in order to cover a larger number of applications thanks to the work of technologists and the rapid advances in laser technology . Specifically in those cases where the first material is transparent to the laser beam and the second one is able to absorb enough energy to melt from the laser beam, the so‐called transmission laser welding technology (TLWT) can be used.…”

Section: Introductionmentioning

confidence: 99%

Laser transmission welding of poly(lactic acid) and polyamide66/sepiolite nanocomposites

Navas‐Martos¹,

Yebra‐Rodríguez²,

Rubia

2018

J of Applied Polymer Sci

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Influence of sepiolite nanoclay on the properties of the resulting join between poly(lactic acid) (PLA) and different Polyamide66 (PA66)/nanoclay nanocomposites was studied in this work. Six different polymer nanocomposites based on PA66 were manufactured through a melt compounding process by adding a fixed 1.64 wt % of a commercial IR absorber additive and the respective weight percentages of sepiolite to the polymer matrix. Several nanocomposite/PLA joints were finally performed by means of the transmission laser welding technology and the resulting weldings were characterized in terms of mechanical properties by performing peeling and shearing tests. Furthermore, both welded and mechanically tested samples were also analyzed by scanning electron microscopy in order to study the morphology of the weld seam. The results of the performed tests show that the addition of sepiolite to the PA66 improves the welding performance only in those cases in which the percentage of sepiolite of the nanocomposites is higher than 5 wt %. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46638.

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Laser welding of plastics (review)

Cited by 20 publications

References 17 publications

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Parametric Studies on Transmission Laser Welding of Acrylics

Laser transmission welding of poly(lactic acid) and polyamide66/sepiolite nanocomposites

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