Analysis of melting and flow in the hot-end of a material extrusion 3D printer using X-ray computed tomography

Article Engineering, Mechanical

Tomographic X-ray particle tracking velocimetry

Simo A. Makiharju et al.

Summary: This study investigated the feasibility of in-laboratory tomographic X-ray particle tracking velocimetry (TXPTV) and tested it in various flow scenarios. Results demonstrated successful tracking of flow tracer particles and obtaining velocity information in the TXPTV experiments. Future improvements are expected to focus on enhancing scan speed and refining related techniques.

EXPERIMENTS IN FLUIDS (2022)

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Article Automation & Control Systems

Thermal study of clogging during filament-based material extrusion additive manufacturing: experimental-numerical study

Zahra Taheri et al.

Summary: One major drawback of material extrusion additive manufacturing is hot-end clogging. This study investigates the thermal conditions that lead to clogging and proposes criteria for avoiding it through experiments and numerical simulations.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2022)

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Article Engineering, Mechanical

Enhanced laboratory x-ray particle tracking velocimetry with newly developed tungsten-coated O(50 μm) tracers

Jason T. Parker et al.

Summary: This study demonstrates the feasibility of in-lab X-ray particle tracking and imaging velocimetry (XPTV and XPIV) using custom-designed tungsten-coated tracer particles and a single energy threshold photon counting detector. The new tracer particles and detector enhance measurement quality and enable faster and more precise measurements. The study also shows that currently available energy-resolving photon counting detectors can be used for laboratory XPTV, motivating further exploration of X-ray tracer particle design.

EXPERIMENTS IN FLUIDS (2022)

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Article Engineering, Manufacturing

Modeling Fused Filament Fabrication using Artificial Neural Networks

Paul Oehlmann et al.

Summary: With industries moving towards digitalized production, additive manufacturing has become a key component of Industry 4.0, accelerating digital production through its possibilities in structural design, production flexibility, customization, and product development. Fused Filament Fabrication is a practical tool for rapid prototyping and demonstrates the importance of AM technologies in accessible desktop solutions. Enhanced integration of systems in an intelligent production environment enables the generation of large-scale data for process monitoring and control.

PRODUCTION ENGINEERING-RESEARCH AND DEVELOPMENT (2021)

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Article Biochemistry & Molecular Biology