Inst. Werkzeugmaschinen und Fabrikbetrieb

214 Items

Recent Submissions
Procedure for Experiential Learning to Conduct Material Flow Simulation Projects, Enabled by Learning Factories

Müller, Bastian C. ; Menn, Jan P. ; Seliger, Günther (2017)

Material flow simulation is a powerful tool to identify improvements in factory operation. For conducting simulation projects, experts are required who know how to prepare, execute and evaluate simulation studies. To date, training mostly focusses on textual case studies, whereby learners perform simulation studies based on a problem and data given in a description. However, this hardly reflect...

Application of spindle speed increaser as sustainable solution to upgrade machine tools

Uhlmann, Eckart ; Thom, Simon ; Ehricke, Matthias (2017)

Due to varying machine operations, cutting material and feed motion of the respective milling machine, a wide range of spindle speed is required. Modern machine tools are therefore occasionally equipped with two spindles to cover a wider application scope. Especially while increasing the cutting removal rates for soft materials like aluminium alloys, outdated machine tools fail to provide high ...

Language independent transfer of assembly knowledge

Menn, Jan P. ; Duc, Bui Minh ; Müller, Bastian C. ; Seliger, Günther (2017)

Transferring assembly knowledge for workers with different cultural and linguistic background is challenging. The established solution of translating written instructions into multiple languages is mostly cost intensive, holds a potential for mistakes and the result might be hard to understand. To cope with this challenge, three different assembly instructions with language reduced or language ...

Utilization of Product Lifecycle Data from PLM Systems in Platforms for Industrial Symbiosis

Halstenberg, Friedrich A. ; Lindow, Kai ; Stark, Rainer (2017)

Industrial Symbiosis represents a promising approach to foster the transformation towards a circular economy. To involve businesses in Industrial Symbiosis, online platforms and input-output matching tools for facilitating the exchange of by-products have been provided by industry organizations and facilitators. Regarding the discrete parts and product manufacturing industry (DPPM), little succ...

A Model for the Development of Sustainable Innovations for the Early Phase of the Innovation Process

Stock, Tim ; Obenaus, Michael ; Slaymaker, Amara ; Seliger, Günther (2017)

Current industrial development is faced by the global challenge to meet the continuously growing demand for capital and consumer goods in emerging countries while simultaneously ensuring a sustainable industrial growth in the social, environmental and economic dimension. By means of market dynamics of cooperation and competition in global value creation and knowledge networks, innovations geare...

Sustainability in Model-based Planning and Control of Global Value Creation Networks

Oertwig, Nicole ; Jochem, Roland ; Knothe, Thomas (2017)

Manufacturing companies are affected by an increasing complexity driven thru fast changing requirements in the global market. To meet the large catalogue of requirements, enterprises are forming global value creation networks and provide services jointly. The existing time pressure and the involvement of many stakeholders results in a demand of methods and tools for a quick configuration of suc...

Comparatively Assessing different Shapes of Lithium-ion Battery Cells

Schröder, Robert ; Aydemir, Muhammed ; Seliger, Günther (2017)

Different shapes of lithium-ion batteries (LIB) are competing as energy storages for the automobile application. The shapes can be divided into cylindrical and prismatic, whereas the prismatic shape can be further divided in regard to the housing stability in Hard-Case and Pouch. Within this paper, the differences in manufacturing costs and efforts as well as the shape related advantages and di...

Open Educational Resources as a Driver for Manufacturing-related Education for Learning of Sustainable Development

Roeder, Ina ; Severengiz, Mustafa ; Stark, Rainer ; Seliger, Günther (2017)

Since the Massachusetts Institute of Technology (MIT) launched its OpenCourseWare program in 2002, the idea of an open and democratic education has spread rapidly all over the globe. Under the name of “Open Educational Resources” (OER), innumerable working sheets, curricular and teaching units have been developed and shared digitally under free commons licenses, connecting teachers and learners...

Competitive Sustainable Globalization General Considerations and Perspectives

Jovane, Francesco ; Seliger, Günther ; Stock, Tim (2017)

Globalization has essentially empowered both newly industrialized and early industrialized countries but also caused considerable global challenges on economic, environmental, and social stability. Trends and risks of globalization and sustainability are specified by reports of global stakeholders as IMF, OECD, UN and its related organizations, WEF, WTO, and WWF. Competitive Sustainable Globali...

Substitution of Coolant by Using a Closed Internally Cooled Milling Tool

Uhlmann, Eckart ; Riemer, Hendrik ; Schröter, Danny ; Sammler, Fiona ; Richarz, Sebastian (2017)

The saving of raw materials plays a major role in industry and is becoming increasingly important. In the field of cutting technology, the aim is to maximise practices such as the substitution of coolant and the steady increase of tool life in order to make an effective contribution towards environmental protection. Concerning the saving of coolant and to enhance the performance in dry machinin...

A Comparison of Best Practices of Public and Private Support Incentives for the Remanufacturing Industry

Guidat, Thomas ; Seidel, Johnannes ; Kohl, Holger ; Seliger, Günther (2017)

In the context of resource constraints and the negative environmental and social impacts of the linear “take-make-dispose” pattern, remanufacturing offers a promising solution for the transformation of end of life (EOL) goods into products with equal or superior specifications and lifetime as compared with newly produced goods. The increasing success of this new industrial paradigm results from...

Mapping and Integrating Value Creation Factors with Life-cycle Stages for Sustainable Manufacturing

Bilge, Pinar ; Emec, Soner ; Seliger, Günther ; Jawahir, I. S. (2017)

Instead of implementing each element individually, engineers must be aware of multiple interactions among all major value creation factors and their life-cycle stages. Interactions are analyzed by a set of factors and hierarchical levels within a production system based on empirical observations and described in analytical models. Such analyses and missing information about the current conditio...

Configuration Equilibrium Model of Product Variant Design Driven by Customer Requirements

Yang, Qin ; Bian, Xianjun ; Stark, Rainer ; Fresemann, Carina ; Song, Fei (2019-04-08)

In view of the dynamic change of customer requirements (CRs) during the process of product use, in this paper we propose a Bayesian Nash equilibrium configuration model for product variant design driven by CRs. By analyzing CRs, the complete variant requirements of the products can be obtained. Combined with modularization and parameterization variant design methods, a parametric variant instan...

Leveraging Circular Economy through a Methodology for Smart Service Systems Engineering

Halstenberg, Friedrich A. ; Lindow, Kai ; Stark, Rainer (2019-06-27)

Product Service Systems (PSS) and Smart Services are powerful means for deploying Circular Economy (CE) goals in industrial practices, through dematerialization, extension of product lifetime and efficiency increase by digitization. Within this article, approaches from PSS design, Smart Service design and Model-based Systems Engineering (MBSE) are combined to form a Methodology for Smart Servic...

Numerical Simulation on the Origin of Solidification Cracking in Laser Welded Thick-Walled Structures

Bakir, Nasim ; Artinov, Antoni ; Gumenyuk, Andrey ; Bachmann, Marcel ; Rethmeier, Michael (2018-06-01)

One of the main factors affecting the use of lasers in the industry for welding thick structures is the process accompanying solidification cracks. These cracks mostly occurring along the welding direction in the welding center, and strongly affect the safety of the welded components. In the present study, to obtain a better understanding of the relation between the weld pool geometry, the stre...

Improvement of Filler Wire Dilution Using External Oscillating Magnetic Field at Full Penetration Hybrid Laser-Arc Welding of Thick Materials

Üstündağ, Ömer ; Avilov, Vjaceslav ; Gumenyuk, Andrey ; Rethmeier, Michael (2019-05-23)

Hybrid laser-arc welding offers many advantages, such as deep penetration, good gap bridge-ability, and low distortion due to reduced heat input. The filler wire which is supplied to the process is used to influence the microstructure and mechanical properties of the weld seam. A typical problem in deep penetration high-power laser beam welding with filler wire and hybrid laser-arc welding is a...

Boehmite Nanofillers in Epoxy Oligosiloxane Resins: Influencing the Curing Process by Complex Physical and Chemical Interactions

Topolniak, Ievgeniia ; Hodoroaba, Vasile-Dan ; Pfeifer, Dietmar ; Braun, Ulrike ; Sturm, Heinz (2019-05-09)

In this work, a novel boehmite (BA)-embedded organic/inorganic nanocomposite coating based on cycloaliphatic epoxy oligosiloxane (CEOS) resin was fabricated applying UV-induced cationic polymerization. The main changes of the material behavior caused by the nanofiller were investigated with regard to its photocuring kinetics, thermal stability, and glass transition. The role of the particle sur...

Short- and Long-Range Mechanical and Chemical Interphases Caused by Interaction of Boehmite (γ-AlOOH) with Anhydride-Cured Epoxy Resins

Ghasem Zadeh Khorasani, Media ; Elert, Anna-Maria ; Hodoroaba, Vasile-Dan ; Agudo Jácome, Leonardo ; Altmann, Korinna ; Silbernagl, Dorothee ; Sturm, Heinz (2019-06-04)

Understanding the interaction between boehmite and epoxy and the formation of their interphases with different mechanical and chemical structures is crucial to predict and optimize the properties of epoxy-boehmite nanocomposites. Probing the interfacial properties with atomic force microscopy (AFM)-based methods, especially particle-matrix long-range interactions, is challenging. This is due to...

Entwicklung und Validierung eines Diagnostikverfahrens zur Analyse von Lichtbogenfluktuationen beim Gleichstromplasmaspritzen

Thomas, Georg (2019)

Das Gleichstromplasmaspritzen (DC-Plasmaspritzen) mittels Plasmageneratoren in Einkathoden-Einanoden-Anordnung (F4/F6/MC60) ist gekennzeichnet durch eine permanente Instabilität des für die Plasmagenerierung genutzten Gleichstromlichtbogens, hervorgerufen durch dessen axiale und radiale Bewegungen. Dies äußert sich in massiven Fluktuationen der Lichtbogenspannung sowie der Plasmafreistrahlgeome...

Modeling and Analysis of Contact Conditions during NC-Form Grinding of Cutting Edges

Uhlmann, Eckart ; Bruckhoff, Joachim (2017-07-05)

Due to increasing demands on cutting tools, cutting edge preparation is of high priority because of its influence on the tool life. Current cutting edge preparation processes are mostly limited to generating simple roundings on the cutting edge. Multi-axis high precision form grinding processes offer great potential to generate defined cutting edge microgeometries. Knowledge about the relation ...