Experimental investigation, modeling and simulation of the deformation behavior of vibration welded nanocomposites

Albrecht, Michael

doi:10.3139/o999.03032016

Cited by 3 publications

(3 citation statements)

References 6 publications

(6 reference statements)

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“…Size and distribution of these layers inside the heat affected zone may vary according to the nature of the material and the processing conditions [8,9]. These studies also reveal that, as predicted in equation 1, a lower applied pressure actually results in a thicker heat-affected zone for unreinforced polypropylene (PP) [10,11] and polyamide 6 (PA6) [8], and leads to assemblies with improved mechanical properties, in particular higher tensile stress at break. Indeed, with well-chosen processing conditions, the weld ratio, defined as the tensile stress at break of the welded material divided by the tensile stress at break of the bulk one, can reach 0.97 for such pristine polymers [12].…”

Section: Introductionmentioning

confidence: 82%

Microstructure-mechanical properties relationships in vibration welded glass-fiber-reinforced polyamide 66: A high-resolution X-ray microtomography study

et al. 2020

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The effect of initial fiber orientation and welding conditions on the mechanical properties and microstructure of 30 wt% glass-fiber-reinforced polyamide 66 was systematically evaluated. For all conditions studied no significant change in the polymer matrix was evidenced. However, fibers in the welded zone were reoriented toward the squeeze and vibration flows and this reorientation is related to the appearance of cavities, as evidenced by high-resolution synchrotron-based X-ray microtomography. It is shown that stress at break values of the welded samples increase with the thickness of the weld zone together with the minimum value of the fiber orientation tensor component in the tensile direction. A drop of strain at break is also related to an increase in the fibers' concentration in the weld. The maximum void volume fraction being measured on samples which have the thickest welded zones, counterintuitively it does not induce lower stress at break.

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Section: Introductionmentioning

confidence: 82%

Microstructure-mechanical properties relationships in vibration welded glass-fiber-reinforced polyamide 66: A high-resolution X-ray microtomography study

et al. 2020

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“…Untersuchungen von Schweißverbindungen an mit Nanopartikeln gefülltem Polypropylen wurden mit instrumentierten mechanischen Untersuchungen an Dünnschnitten von Albrecht u. a. [13] …”

Section: Vergleich Von Grenzflächen Inunclassified

Vergleich von Grenzflächen in Schweißnähten und Spritzgießbauteilen

Kuehnert¹

2018

Zeitschrift Kunststofftechnik

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“…13 Fusion determines the bond quality between strands and is directly correlated with mechanical properties. 14,15 Adhesion leads to the formation of strong bonds at the interface through the entanglement of polymer chains across the interface. 16 During the deposition of the molten strand, the previously deposited strand cooled to different temperatures over time.…”

Section: Introductionmentioning

confidence: 99%

Print path‐dependent contact temperature dependency for 3D printing using fused filament fabrication

Huang

Schlarb

2022

J of Applied Polymer Sci

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This paper focuses on the effects of different time spans and thus different contact temperatures when a molten strand contacts an adjacent already solidified strand in a plane during 3D printing with fused filament fabrication. For this purpose, both the manufacturing parameters and the geometry of the component are systematically varied and the effect on morphology and mechanical properties is investigated. The results clearly show that even with identical printing parameters, the transitions between the individual layers are much more visible with long time spans until fusion and lead to low mechanical properties. In contrast, short spans lead to hardly visible welds and high mechanical properties. Transferring the findings to different component sizes ultimately verifies that the average temperature at the time of contact between the already solidified and the currently deposited strand is decisive for component quality. In order to generate high component qualities, this finding must therefore be taken into account in the future in the path generation strategy, i.e., in so‐called slicing.

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Experimental investigation, modeling and simulation of the deformation behavior of vibration welded nanocomposites

Abstract: Experimental investigation, modeling and simulation of the deformation behavior of vibration welded nanocomposites

Cited by 3 publications

References 6 publications

Microstructure-mechanical properties relationships in vibration welded glass-fiber-reinforced polyamide 66: A high-resolution X-ray microtomography study

Microstructure-mechanical properties relationships in vibration welded glass-fiber-reinforced polyamide 66: A high-resolution X-ray microtomography study

Vergleich von Grenzflächen in Schweißnähten und Spritzgießbauteilen

Print path‐dependent contact temperature dependency for 3D printing using fused filament fabrication

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