Projects

Current projects

In the following you will find a short overview of our current research projects.

Data-based quality inspection of foundry cores using modal analysis

Data-based quality inspection of foundry cores using modal analysis

 

Funded by: German Research Foundation (DFG)

Duration: 12/24 – 12/26

Data-driven Materials Processing (Prof. P. Lechner)

 

Content:

Quality assurance is a central aspect of modern mass production in general and core production in particular. Quality assurance for core production and subsequent metal casting is comparatively complex  compared to other mass production processes such as metal forming and machining. On an industrial scale, cores are currently inspected only visually before being used in the casting mold. Fine and closed cracks are often overlooked. Material defects such as increased moisture absorption can also not be detected in this way. These defects lead to scrap after casting, which can only be classified as such after a considerable consummation of resources.


The aim of the present project is to investigate the methodological basis for non-destructive quality assurance of foundry cores. Core defects, which are caused either by the manufacturing process or subsequent storage, are often not detectable from the outside, which is why it is necessary to inspect the entire volume. Resonance testing in combination with modal analysis will be used for this purpose. Within the scope of the research project, methods will be developed not only to distinguish between good parts and scrap, but also to localize defects. For this purpose, the geometric as well as the material properties including their statistical distribution are characterized. This enables a spatially resolved quantification of the measurement uncertainty and finally a localization of defects in foundry cores. Ultimately, this leads to a decision whether a foundry core can be used reliably in the subsequent casting process or should be classified as scrap.

 

© University of Augsburg
Assistant Professor
Data-driven Materials Processing

FORinFPRO

FORinFPRO - Intelligent Manufacturing Processes & Closed-Loop Production

 

  

Funded by: Bavarian Research Foundation

Duration: March 01, 2024 – February 31, 2027

Mechanical Engineering (Prof. M. Sause)
Hybrid Materials (Prof. K. Weidenmann)

 

Content:

How can self-adaptive control systems for machines, plants, and process chains be implemented to learn from past process steps and adapt to future process requirements? This question is at the core of the new Bavarian research consortium FORinFPRO. The solution aims not only to contribute to higher product quality but also to enhance robustness with increased resource efficiency through the use of recycled materials in various processes. This will be investigated in the specific case of manufacturing lightweight components. To produce complex components from composite materials, innovative manufacturing processes will be enabled to meet the challenges posed by a self-adaptive process in terms of sensing, process, modeling, and control. The research methodology aims not only to advance the control of individual processes but also to realize a complex process chain that enables global control at the overall process level.

 

© University of Augsburg
Group leader "Condition Monitoring"
Mechanical Engineering
Group leader "Processes"
Hybrid Composite Materials

TurnKI

TurnKI - Artificial Intelligence for Monitoring Multi-Spindle Turning Processes

 

Funded by: Bavarian Consortium Research Program (BayVFP) of the Free State of Bavaria, Funding Line "Digitalization"

Duration: January 01, 2024 – December 31, 2025

Mechanical Engineering (Prof. M. Sause)

 

Content:

Within the TurnKI project, inspired by the AI Production Network Augsburg, a sensor-based process monitoring system for multi-spindle turning machines is to be researched. The research objective is to explore a real-time monitoring system capable of detecting, classifying, and quantifying workpiece and tool deviations in a complex multi-spindle turning process. To achieve this, a measurement system will be employed that monitors the machining process through vibration-based analyses, such as structure born noise analysis and vibration analysis using acceleration sensors. The real-time detection of process deviations and interpretation of sensor-detected variations will be achieved through artificial intelligence methods, particularly machine learning. Based on the monitoring solution, the identification of deviations aims to reduce scrap and selectively sort out defective products.

 

© A. Berger
Group leader "Condition Monitoring"
Mechanical Engineering

AI4FSW

AI4FSW – Artificial Intelligence for Friction Stir Welding

 

  

Funded by: Bavarian Consortium Research Program (BayVFP) of the Free State of Bavaria, Funding Line "Digitalization"

Duration: October 01, 2023 – September 31, 2026

Mechanical Engineering (Prof. M. Sause)

 

Content:

Within the project, motivated by the AI Production Network Augsburg, a multisensory process monitoring system for robot-based and portal-based friction stir welding is to be researched. The system aims to contribute to quality management and reduce subsequent inspection efforts. To achieve this, a sensor system will be designed to enable reliable monitoring. In addition to selecting various measurement techniques, there is a focus on the targeted determination of signal characteristics that allow a precise description of the process. These must be determined in real-time for online monitoring. The signal features obtained in this way are then intended to be incorporated into an artificial neural network, which will be trained with the corresponding process states/defects. Finally, the reliability and transfer potential of the system and AI will be assessed using a demonstrator component.

 

© KUKA Deutschland GmbH
Group leader "Condition Monitoring"
Mechanical Engineering

Multi-scale simulation of molding materials for inorganic binders using binder-jet-3d-printing

Multi-scale simulation of molding materials for inorganic binders using binder-jet-3d-printing

 

Funded by: German Research Foundation (DFG)

Duration: 06/23 -06/25

Data-driven Materials Processing (Prof. P. Lechner)

 

Content:

In recent years, 3D printing has been developed as a technology for the production of sand cores for casting processes, particularly for rapid prototyping and low-volume foundry applications. However, due to the layered structure, this process differs significantly from classical core shooting, especially in terms of the density levels achieved.


The aim of the proposed project is to better understand the 3D printing process of sand cores in order to identify the influence of process variables on the final product. This will ensure the high quality of the printed sand cores for specific applications, while minimising the high cost of measurement and the reliance on expert knowledge and empirical values.


To this end, the proposed project will create a digital model - closely accompanied by relevant experimental studies - that represents the layer-by-layer structure of the sand core layers during 3D printing. Based on micro-computed tomography images of industrially used sands, the bulk of the sand grains will be simulated under the influence of the binder on already printed layers. Subsequently, a simulative and experimental evaluation of the mechanical, thermal and flow properties of the printed sand cores is planned.


A deeper understanding of the microscopic processes involved in the 3D printing of sand cores will serve as a basis for the further development of materials from an environmental perspective and as a basis for optimising the printing process itself.

 

© University of Augsburg
Assistant Professor
Data-driven Materials Processing

MakeKryo III

MakeKryo III - Mechanical-physical material behavior at cryogenic temperatures

 

  

Funded by: Federal Ministry of Economic Affairs and Climate Action (BMWK)
Duration: 01.11.2022 - 31.10.2024
Mechanical Engineering (Prof. M. Sause)

 

Content:
A comprehensive and reliable determination of characteristic values of fiber-reinforced composites at cryogenic temperatures has so far been very restricted. In the first two project phases, test concepts and methods were developed for the determination of compression and shear as well as fracture mechanical properties as well as adhesive bonding for fiber composites at very low temperatures. Continuing on this basis, the project now aims to develop new testing solutions for the integration of secondary measurement methods, such as digital image correlation, acoustic and electromagnetic emission, at low temperatures.

 

© University of Augsburg
Group leader "Materials & Mechanics"
Hybrid Composite Materials

KAXFLUX-H2

KAXFLUX-H2

 

Funded by: Bavarian State Ministry for Economic Affairs, Regional Development and Energy
Program: research grant
Duration: 01.01.2022 – 31.12.2024
Mechanical Engineering (Prof. M. Sause)

 

Content:

The research project "KAXFLUX-H2" has the goal of a complete virtual representation of the cooling process in an axial flux drive for aerospace application with the help of cryogenic hydrogen. The project is carried out in cooperation with the Augsburg Technical University of Applied Sciences. The aim is to develop an axial flow motor with cryogenic hydrogen cooling that can significantly increase the efficiency of a hydrogen-electric drive train in aircrafts through intelligent system architecture. At the University of Augsburg, the topics of material selection/development with topology optimization for use at cryogenic temperatures, associated process technology and material processing are being researched. Incorporating multiphysics simulation, the focus is on thermo-mechanical modeling and simulation of the stator respecting the entire system at cryogenic temperatures.

 

© University of Augsburg
Group leader "Materials & Mechanics"
Hybrid Composite Materials

ODIN

ODIN – Optimized Design for Inspection

 

Funded by: European Union  

Program: COST Action 18203

Duration: 02.10.2019 -  01.08.2024

Mechanical Engineering (Prof. M. Sause)

 

Content:

Within the EU-COST network we provide the representation of the Federal Republic of Germany and the lead of WP5 - Data management and signal processing. The goal of this expert network is to develop the technical standards for the use of structural monitoring systems (SHM) for aviation applications within the next four years. Within WG5, the work focuses on analysis strategies, data reduction methods and reliability of the measurement systems used.

 

© BCMtec
Director AI production network
Mechanical Engineering

Completed research projects

In the past, various projects were carried out together with research and application partners. The gallery presents an overview of the projects.

MakeKryo II - Materialkennwertermittlung

 

Funded by: DLR Space Administration

Duration: 2021-2022

Mechanical Engineering (Prof. M. Sause)
 

Content:

Comprehensive and reliable determination of characteristic properties of fiber-reinforced composites at cryogenic temperatures has been possible only to a very limited extent so far. In a first project phase, test concepts and methods to determine compressive and shear properties of various fiber-reinforced composites at very low temperatures were already developed and validated. Based on this knowledge, this second project phase aimed to continue with the development of new test solutions to identify fracture mechanical parameters and to characterize bonded joints at very low temperatures.

 

© University of Augsburg
Director AI production network
Mechanical Engineering

Correlation between material microstructure and electromagnetic emission

 

Funded by: DFG Sachbeihilfe

Duration: 2020-2022

Mechanical Engineering (Prof. M. Sause)

 

Content:

This DFG project was concerned with the investigation of the fundamental relationships between the microstructure of materials and the generation of electromagnetic emission (EME) during the fracture process. EME is caused by the imbalance of charge carriers, due to the breaking of bonds and which is additionally set in motion by the dynamics of the fracture process. The influence of different parameters on the electromagnetic signals was investigated in more detail by series of measurements across material classes and then mapped in simulations. The understanding of the source mechanism was further extended and also the sensor technology was further developed in an application-oriented manner.

 

© University of Augsburg
Director AI production network
Mechanical Engineering

Manufacturing and characterization of interpenetrating metal-ceramic composites based on highly homogeneous foam structures

 

Content:

The project investigated a highly homogeneous ceramic foam and an interpenetrating metal-ceramic composite made from it by gas pressure infiltration.
The microstructure can be transferred by CT reconstruction into a model suitable for numerical simulation of the mechanical and thermal properties of both the ceramic foam and the interpenetrating composite. Methodological developments and the transfer of evaluation methods to metal-ceramic interpenetration composites exhibited novelty character in both the experimental and numerical areas of material characterization and led to a deeper understanding of the mechanisms of action in the material system.

 

© University of Augsburg
Chair holder
Hybrid Composite Materials

SmartCut – Smart solutions for machining processes

 

Funded by: bayme vbm – KME Programm

Duration: 2021-2023

Mechanical Engineering (Prof. M. Sause)
 

Content:

Machining is a process step that is in many cases of central importance for product quality. Within the project machine and sensor data were used to increase tool life, reduce scrap and enable continuous quality monitoring of machining processes. For this purpose, modern machine learning methods were applied to real process data to demonstrate the concrete potential and to make the methods evaluable and available for companies.

 

© University of Augsburg
Director AI production network
Mechanical Engineering

Liquid metal infiltrated interpenetrating composites based on metallic glass - processing, characterization and modeling

 

Funded by: German Research Foundation (DFG)

Program: Individual Reasearch Grants

Duration: 01.07.2019 -  30.06.2023

Hybrid Composite Materials (Prof. K. Weidenmann)

 

Content:

In this project an interpenetrating metal matrix composite reinforced with a metallic glass (Ni60Nb20Ta20) and a eutectic AlSi12-matrix was manufactured and characterized. Laser powder bed fusion was used to manufacture an open-porous lattice-like preform from amorphous powder. Subsequently, the preform was infiltrated with the AlSi12-matrix in a gas pressure infiltration process. In the process, the amorphous structure of the metallic glass was largely maintained. Due to the manufacturing process, the preform has an anisotropic structure which is reflected in the results of the structural, mechanical, and thermal characterization carried out. The results of the in-situ and ex-situ mechanical characterization show that the composite has a significantly higher compressive strength in the manufacturing direction than transversely to the manufacturing direction, and a different failure behavior was observed in both directions. TEM studies in correlation with the in-situ investigations show that good interfacial bonding has been achieved. Finally, the experimental results were validated with analytical models of thermal expansion and elastic properties and an FE model.

 

© University of Augsburg
PhD student
Hybrid Composite Materials

Additive manufacturing of temperature sensitive actuators

 

Content:

As part of the project, a manufacturing process for temperature-sensitive composite actuators consisting of a polymer matrix and wires made of a shape memory alloy was developed based on the Arburg plastic freeformer. Pre-stressed wires can be deposited during the printing process to produce actuators with high geometric complexity. The interface properties as well as the quasi-static and cyclic mechanical properties of the composite were characterised and modelled to map process-structure-property relationships. The focus was on the thermomechanical properties in order to determine the activation temperatures as a function of the preload as well as the forces that can be applied and on the optimisation of the polymer-wire interface. Following systematic material selection, adaptation of the surface pre-treatment of the wire and development of the printing process, a functional demonstrator in the form of a two-finger gripper was designed and manufactured.

 

© University of Augsburg
Chair holder
Hybrid Composite Materials

WiR - Wissentransfer Region Augsburg - Digital Engineering and Automation

 

Funded by: BMBF – Innovative Hochschule – Exzellenzstrategie des Bundes

Duration: 2018-2023

Mechanical Engineering (Prof. M. Sause)
 

Content:

The project WiR dealt with the possibilities of designing knowledge transfer and the establishment of an innovation laboratory in the field of "Digital Engineering and Automation“. Robot-supported component testing was established in close cooperation with the Institute for Software and Systems Engineering. The aim was to enable mechanical testing of components using free force and moment vectors. For this purpose, a worldwide unique test bench was realized, comprising two 6-axis large payload industrial robots applying the loads to the component under test. Furthermore, relevant testing scenarios were outlined and secondary testing methods (e.g. Acoustic Emission Analysis, Digital Image Correlation) were developed further towards the requirements of component testing as well as different technical installations (e.g. CNC milling machine, 6-axis industrial robot, additive manufacturing) were equipped with a total of 24 different monitoring systems.

 

© University of Augsburg
Director AI production network
Mechanical Engineering

MAI CC4 HybCar – Technologien zur effizienten Herstellung von hybriden CFK/Metall-Strukturbauteilen im Automobilbereich

 

Funded by: Campus Carbon 4.0 – Neue Werkstoffe Bayern

Duration: 2017-2021

Mechanical Engineering (Prof. M. Sause)
 

Content:

For the use of fiber composites and CFRP-metal hybrids in the series production of automobiles, the automation of the production process is of very high importance. Within the scope of this project, work was therefore carried out on a new type of load-path-oriented material system and a suitable automated manufacturing process. It was focused on the characterization of the interface between metal and CFRP, as well as the forming behavior of the hybrid component.

 

© EDAG
Director AI production network
Mechanical Engineering

MAI CC4 COSIMO – Composites for sustainable Mobility

 

Funded by: Campus Carbon 4.0 – Neue Werkstoffe Bayern

Duration: 2018-2021

Mechanical Engineering (Prof. M. Sause)
 

Content:

The goal of the project was the conceptual design and optimization of a T-RTM process to develop the basis for sustainable and efficient manufacturing processes in automotive and aircraft construction. For process monitoring and economic validation of the component quality, a sensor network of ultrasonic, pressure, temperature and dielectric sensors has been developed to be integrated in the T-RTM tool.
In designing the process monitoring, the focus was on evaluating the flow front dynamics and the degree of polymerization. Thus, the sensor network of ultrasonic sensors could be used to interpolate the propagation of the flow front and visualize it over the process time.

 

© University of Augsburg
Director AI production network
Mechanical Engineering

MAI CC4 FASTMOVE – Carbon-Hochgeschwindigkeits-5-Achssystem für die Bearbeitungsaufgaben der Zukunft

 

Funded by: Campus Carbon 4.0 – Neue Werkstoffe Bayern

Duration: 2017-2021

Mechanical Engineering (Prof. M. Sause)

 

Content:
As part of the project, a structural health monitoring system was developed for a 5-axis CNC milling machine. With this, the condition of the structural components of the milling machine could be monitored live by means of several acoustic measurement methods. In addition, the sharpness of the drill bit's cutting edges could be determined via structure-borne sound measurements and, at the same time, the machined component could be checked for defects.

 

© University of Augsburg
Director AI production network
Mechanical Engineering

MAI CC4 Hybrid – Hybrid composite laminates and joining technologies

 

Funded by: Campus Carbon 4.0 – Neue Werkstoffe Bayern

Duration: 2017-2021

Mechanical Engineering (Prof. M. Sause)

 

Content:

As part of the project, test methods for characterizing fiber-metal laminates were developed and brought together for in-situ tests. These resulting parameters made it possible to model the forming processes of the thermoplastic-based hybrid laminate semi-finished products.

 

© SGL Carbon
Director AI production network
Mechanical Engineering

MakeKryo – Material characterization at cryogenic temperatures

 

Funded by: DLR Space Administration

Duration: 2020-2021

Mechanical Engineering (Prof. M. Sause)

 

Content:

The aim of the project was to develop new testing solutions for the mechanical characterization of fiber composites under space conditions. Test devices were tested which can be used to determine compression and shear characteristics at temperatures down to 20 K. Valid results were obtained for various fiber composites.

 

© University of Augsburg
Director AI production network
Mechanical Engineering

Relation of electromagnetic and acoustic emission to temporal and spatial crack motion on a microscopic scale in polymers and carbon fibers

 

Funded by: DFG Sachbeihilfe

Duration: 2018-2021

Mechanical Engineering (Prof. M. Sause)
 

Content:

Within the framework of this project, the fundamental relationships of the formation of electromagnetic emission (EME) in polymers, reinforcing fibers and composites were investigated. At the same time, a measurement technique was established to record such EME in typical laboratory experiments and a theoretical model was developed to describe the EME source.

 

© University of Augsburg
Director AI production network
Mechanical Engineering

MAI ZfP - Combined non-destructive testing methods for quality assurance of fiber reinforced composites

 

Content:

Within the MAIzfp project, round robin tests of NDT methods were organised, automated test solutions further developed and the modelling of NDT methods more closely examined. Particular attention was paid to the investigation of porosity, fibre waviness and impact damage in fibre composites.
(BMBF, Leading-Edge Cluster MAI Carbon)

 

© University of Augsburg
Director AI production network
Mechanical Engineering

MAI Plast -  Development of cost-effective processing technologies for automated processing of high-performance thermoplastic composites for high-volume applications

 

Content:

Within the scope of the project the consolidation and deconsolidation as well as the forming behaviour of fibre-reinforced thermoplastics were investigated. For automated tape laying processes their implications were determined, and for PA-6 the influence of crystallinity on material properties was determined.
(BMBF, Leading-Edge Cluster MAI Carbon)

 

© University of Augsburg
Director AI production network
Mechanical Engineering

FORCIM³A - CFRP/metal composite research association for mechanical and plant engineering

 

Content:

Interfacial modifications of metal-CFK hybrid layered composites were investigated. The use of modern coating methods significantly increased adhesion and prevented contact corrosion.
(Bavarian Research Foundation)

 

© University of Augsburg
Director AI production network
Mechanical Engineering

ComBo - Efficient manufacturing technology for composite booster segments

 

Content:

Within the framework of the project, manufacturing technologies for future boosters of the ARIANE-6 program were investigated. The main focus was on the production with automated tape laying processes for thermoplastic CFRP tapes, as well as the monitoring of material development with test methods such as acoustic emission analysis.

(Bavarian Ministry of Economic Affairs, Regional Development and Energy)

 

© University of Augsburg
Director AI production network
Mechanical Engineering

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