Welding of plastics with diode laser

Hänsch, Dirk; Haaf, D.; Putz, Hans‐Joachim; Treusch, Hans-Georg; Gillner, Arnold; Poprawe, Reinhart

doi:10.2351/1.5059191

Cited by 14 publications

(8 citation statements)

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“…Bond Line Fusion Bonding/Welding of Thermoplastic Composites Material properties, laser characteristics, and welding time influence the laser welding process. Laser welding of polymer depends highly on radiation absorption characteristics of the polymer [44]. To control the conversion of laser radiation to heat, pigments or additives can be used.…”

Section: Laser Beammentioning

confidence: 99%

Fusion Bonding/Welding of Thermoplastic Composites

Yousefpour

Hojjati²,

Immarigeon

2004

Journal of Thermoplastic Composite Materials

381

223

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Joining of thermoplastic composites is an important step in the manufacturing of aerospace thermoplastic composite structures. Therefore, several joining methods for thermoplastic composite components have been under investigation and development. In general, joining of thermoplastic composites can be categorized into mechanical fastening, adhesive bonding, solvent bonding, co-consolidation, and fusion bonding or welding. Fusion bonding or welding has great potential for the joining, assembly, and repair of thermoplastic composite components and also offers many advantages over other joining techniques. The process of fusion-bonding involves heating and melting the polymer on the bond surfaces of the components and then pressing these surfaces together for polymer solidification and consolidation. The focus of this paper is to review the different fusion-bonding methods for thermoplastic composite components and present recent developments in this area. The various welding techniques and the corresponding manufacturing methodologies, the required equipment, the effects of processing parameters on weld performance and quality, the advantages/disadvantages of each technique, and the applications are described.

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Section: Laser Beammentioning

confidence: 99%

Fusion Bonding/Welding of Thermoplastic Composites

Yousefpour

Hojjati²,

Immarigeon

2004

Journal of Thermoplastic Composite Materials

381

223

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“…In general, diode laser systems are superceding the Nd:YAG laser, due to modular principles of optimized design, and higher efficiency [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Basic Types Of Laser Welding Systemsmentioning

confidence: 99%

“…L ASER WELDING TECHNOLOGY (LWT) provides a highly attractive method for thermoplastic applications [1][2][3][4][5][6][7]. Laser welding of thermoplastic parts is at the initiation stage for wide industrial application [8][9][10]. Current and potential application areas include automotive (taillight assemblies, fuel line components), electrical and electronic modules (cell phones housings, display windows and connectors) and medical (valves, housings, optical lenses, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Laser Transmission Welding of Semicrystalline Thermoplastics - Part II: Analysis of Mechanical Performance of Welded Nylon

Kagan

Pinho

2004

Journal of Reinforced Plastics and Composites

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Selecting thermoplastics for a wide industrial application (automotive, appliances, lawn and garden, power tools, etc.) strongly depends on the plastic material composition, part design, processing (molding and welding) conditions. The structure of used thermoplastics, mechanical properties and composition (reinforcements, fillers, additives, pigments, etc.) may have the greater influence and need to be characterized for optimum material selection for the laser transmission welding (LTW) application. To provide a guide to nylon based thermoplastics selection for LTW applications we have evaluated the influence of specific material composition factors and properties, such as fiber-glass, mineral filler, impact modifier content, and color/pigment version on the Near InfraRed (NIR) transmission characteristics, including the laser wavelength (1.06 mm). The results of an optical characterization of nylon 6 based thermoplastics are discussed in the Part I of this report to ANTEC’ 2000 (Kagan, V. A., Bray, R. B. and Kuhn, W. P., ‘‘Laser Transmission Welding of Semi-Crystalline Thermoplastics - Part I: The Magical Solution, Proceedings of the SPE 58th Annual Technical Conference and Exhibits (ANTEC’2000)). The mechanical performance (tensile strength at room temperature conditions) of nylon welded joints was evaluated in terms of the influence of transmission laser welding technology parameters (laser power, welding speed, laser beam spot sizes, clamp pressure, etc.) and thermoplastic composition (reinforcements, fillers, additives, pigments, etc.). Technical results of this comprehensive evaluation (optical properties of nylon 6 based plastics and mechanical performance of welded joints) will assist plastic parts designers and technologists in selecting nylon based thermoplastics and developing new products using LTW technology. The purpose of Part II of this report is to increase understanding within the plastics engineering community regarding the usefulness and possible applicability of LTW technology for nylon made components.

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“…Many research and engineering programs were oriented towards optimization of mechanical performance of the weld and evaluation of plastic absorption characteristic [1][2][3][4][5][6]. Only a few studies concentrated on colored thermoplastics and development of colored plastic grades for various industrial applications [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Relationship between Optical Properties and Optimized Processing Parameters for through-Transmission Laser Welding of Thermoplastics

Grewell

Rooney

Kagan

2004

Journal of Reinforced Plastics and Composites

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In previous studies, the results of an optical characterization (laser energy transmission, absorption, etc.) at a wide range of infrared wavelength for various nylon based plastics (unfilled and reinforced) with the influence of various colorants have been reported. In conjunction with these results, an analysis on optimized mechanical performance of the laser welded joints was also reported. In this current paper, we will try to increase the understanding of the plastics engineering community regarding the relations between optical properties of thermoplastics and optimized processing parameters of through-transmission laser welding (simultaneous welding mode).

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Welding of plastics with diode laser

Cited by 14 publications

References 0 publications

Fusion Bonding/Welding of Thermoplastic Composites

Fusion Bonding/Welding of Thermoplastic Composites

Laser Transmission Welding of Semicrystalline Thermoplastics - Part II: Analysis of Mechanical Performance of Welded Nylon

Relationship between Optical Properties and Optimized Processing Parameters for through-Transmission Laser Welding of Thermoplastics

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