TY  - JOUR
A1  - Abbas, Karim
A1  - Hedwig, Lukas
A1  - Balc, Nicolae
A1  - Bremen, Sebastian
T1  - Advanced FFF of PEEK: Infill strategies and material characteristics for rapid tooling
JF  - Polymers
N2  - Traditional vulcanization mold manufacturing is complex, costly, and under pressure due to shorter product lifecycles and diverse variations. Additive manufacturing using Fused Filament Fabrication and high-performance polymers like PEEK offer a promising future in this industry. This study assesses the compressive strength of various infill structures (honeycomb, grid, triangle, cubic, and gyroid) when considering two distinct build directions (Z, XY) to enhance PEEK’s economic and resource efficiency in rapid tooling. A comparison with PETG samples shows the behavior of the infill strategies. Additionally, a proof of concept illustrates the application of a PEEK mold in vulcanization. A peak compressive strength of 135.6 MPa was attained in specimens that were 100% solid and subjected to thermal post-treatment. This corresponds to a 20% strength improvement in the Z direction. In terms of time and mechanical properties, the anisotropic grid and isotropic cubic infill have emerged for use in rapid tooling. Furthermore, the study highlights that reducing the layer thickness from 0.15 mm to 0.1 mm can result in a 15% strength increase. The study unveils the successful utilization of a room-temperature FFF-printed PEEK mold in vulcanization injection molding. The parameters and infill strategies identified in this research enable the resource-efficient FFF printing of PEEK without compromising its strength properties. Using PEEK in rapid tooling allows a cost reduction of up to 70% in tool production.
KW  - polyetheretherketone (PEEK)
KW  - rapid tooling
KW  - infill strategy
KW  - compression behavior
KW  - additive manufacturing
KW  - fused filament fabrication
Y1  - 2023
U6  - https://doi.org/10.3390/polym15214293
N1  - This article belongs to the Special Issue "Polymer Materials and Design Processes for Additively Manufactured Products"
VL  - 2023
IS  - 15
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Luft, Angela
A1  - Luft, Nils
A1  - Arntz, Kristian
T1  - A basic description logic for service-oriented architecture in factory planning and operational control in the age of industry 4.0
JF  - Applied Sciences
N2  - Manufacturing companies across multiple industries face an increasingly dynamic and unpredictable environment. This development can be seen on both the market and supply side. To respond to these challenges, manufacturing companies must implement smart manufacturing systems and become more flexible and agile. The flexibility in operational planning regarding the scheduling and sequencing of customer orders needs to be increased and new structures must be implemented in manufacturing systems’ fundamental design as they constitute much of the operational flexibility available. To this end, smart and more flexible solutions for production planning and control (PPC) are developed. However, scheduling or sequencing is often only considered isolated in a predefined stable environment. Moreover, their orientation on the fundamental logic of the existing IT solutions and their applicability in a dynamic environment is limited. This paper presents a conceptual model for a task-based description logic that can be applied to factory planning, technology planning, and operational control. By using service-oriented architectures, the goal is to generate smart manufacturing systems. The logic is designed to allow for easy and automated maintenance. It is compatible with the existing resource and process allocation logic across operational and strategic factory and production planning.
KW  - manufacturing data model
KW  - production planning and control
KW  - manufacturing flexibility
KW  - technology planning
KW  - SOA
KW  - service-oriented architectures
KW  - factory planning
Y1  - 2023
U6  - https://doi.org/10.3390/app13137610
SN  - 2076-3417
N1  - This article belongs to the Special Issue "Smart Industrial System"
VL  - 2023
IS  - 13
PB  - MDPI
CY  - Basel
ER  - 
TY  - RPRT
A1  - Barnat, Miriam
A1  - Arntz, Kristian
A1  - Bernecker, Andreas
A1  - Fissabre, Anke
A1  - Franken, Norbert
A1  - Goldbach, Daniel
A1  - Hüning, Felix
A1  - Jörissen, Jörg
A1  - Kirsch, Ansgar
A1  - Pettrak, Jürgen
A1  - Rexforth, Matthias
A1  - Josef, Rosenkranz
A1  - Terstegge, Andreas
T1  - Strategische Gestaltung von Studiengängen für die Zukunft:  Ein kollaborativ entwickeltes  Self-Assessment
BT  - Diskussionspapier Nr. 33
T2  - Hochschulforum Digitalisierung - Diskussionspapier
N2  - Das Diskussionspapier beschreibt einen Prozess an der FH Aachen zur Entwicklung und Implementierung eines Self-Assessment-Tools für Studiengänge. Dieser Prozess zielte darauf ab, die Relevanz der Themen Digitalisierung, Internationalisierung und Nachhaltigkeit in Studiengängen zu stärken. Durch Workshops und kollaborative Entwicklung mit Studiendekan:innen entstand ein Fragebogen, der zur Reflexion und strategischen Weiterentwicklung der Studiengänge dient.
Y1  - 2024
SN  - 2365-7081
PB  - Stifterverband für die Deutsche Wissenschaft
CY  - Berlin
ER  -