The Influence of Laser Welding Processes on the Weld Seam Quality of Thermoplastic Composites with High Moisture Content

Wippo, Verena; Winter, Y.; Jaeschke, Peter; Suttmann, Oliver; Overmeyer, Ludger

doi:10.1016/j.phpro.2016.08.112

Cited by 10 publications

(4 citation statements)

References 5 publications

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“…Additionally, laser welding has also been used to successfully join fiber-reinforced thermoplastic composites [12,13,14,15,16]. More recently, the influence of laser welding process parameters on the weld bead quality of thermoplastic composites with high moisture content has also been studied [17]. Moisture effects on the properties of laser welded polyamide were also investigated [18].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Strength of Thermoplastic Polyamide Welded by Nd:YAG Laser

et al. 2019

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Welding is a fundamental process in many industries. It is a fast-changing technology, continuously evolving, with recent developments in laser and robotic welding, virtual reality and machine learning. Focusing on laser welding, there is a significant interest in this technology, as well as an increasing demand for high-strength lightweight structures, replacing metals in some applications. This work presents an experimental study of the mechanical properties of three types of polyamide 6 joints welded by Nd:YAG laser. After welding, tensile tests were carried out in order to evaluate the influence of the joint type and weld passes on joint strength and weld stresses. The results showed that fairly high weld stresses could be achieved, indicating that good-quality welds were achieved.

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Section: Introductionmentioning

confidence: 99%

Mechanical Strength of Thermoplastic Polyamide Welded by Nd:YAG Laser

et al. 2019

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“…Thus, PEKK-A4 seems to scatter more the light than PEKK-A2, which increases the distribution of the energy over a larger area. Different mechanical tests are carried out to quantify the resistance of welded samples by LTW: DCB [2,11], wedge [12], and SLS tests [8,11,[13][14][15][16]. SLS is the easiest and most used test.…”

Section: Fig 6 A4/sc-p2 Assembly Cross-section Along the Welding Path...mentioning

confidence: 99%

Laser transmission welding of PEKK: Influence of material properties and process parameters on the weld strength

AGUIRRE

2023

Materials Research Proceedings

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Abstract. Laser transmission welding (LTW) is a suitable process for assembling thermoplastic materials. This joining process is use to assembly most thermoplastics, but high-performance thermoplastics, such as polyetherketoneketone (PEKK), have received less attention until now. The present work deals with joining PEKK parts by LTW in amorphous over semi-crystalline state configuration. The optical properties of amorphous and semi-crystalline states were measured. The effect of the upper part thickness (2 or 4 mm) and those of the laser power reaching the interface was assessed through the determination of the heat affected zone (HAZ) dimensions and the mechanical resistance of the bonds. Single lap shear (SLS) tests were conducted to investigate the influence of the process parameters on the interfacial strength and to validate the weld quality. The highest LSS is obtained around 60 MPa. When increasing the laser power, the dimensions of the HAZ increase, and the mechanical strength decreases.

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“…In the case of the welding processes of the polymer composites there are some research work done. [26][27][28][29][30][31][32][33] However, only few of the previous works involve PA66 as polymer matrix. 27,31,32 The objective of this paper is to study the behavior of PLA-PA66/sepiolite nanocomposites join and the influence of the percentage of nanoclay in the performance of it in order to evaluate the potential use of these materials in automotive sector.…”

Section: Introductionmentioning

confidence: 99%

“…As a consequence of the irruption of the polymer composites the technologies of manufacture of plastic products are being recently forced to adapt to the implantation of these new materials. In the case of the welding processes of the polymer composites there are some research work done . However, only few of the previous works involve PA66 as polymer matrix .…”

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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The Influence of Laser Welding Processes on the Weld Seam Quality of Thermoplastic Composites with High Moisture Content

Cited by 10 publications

References 5 publications

Mechanical Strength of Thermoplastic Polyamide Welded by Nd:YAG Laser

Mechanical Strength of Thermoplastic Polyamide Welded by Nd:YAG Laser

Laser transmission welding of PEKK: Influence of material properties and process parameters on the weld strength

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

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