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Christian Bölling

Christian Bölling
EIT Manufacturing · Innovation Hub Central

Doctor of Engineering

About

15
Publications
1,742
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50
Citations
Introduction

Publications

Publications (15)
Chapter
Full-text available
This chapter describes the various approaches to analyse, quantify and evaluate uncertainty along the phases of the product life cycle. It is based on the previous chapters that introduce a consistent classification of uncertainty and a holistic approach to master the uncertainty of technical systems in mechanical engineering. Here, the following t...
Chapter
Full-text available
Uncertainty affects all phases of the product life cycle of technical systems, from design and production to their usage, even beyond the phase boundaries. Its identification, analysis and representation are discussed in the previous chapter. Based on the gained knowledge, our specific approach on mastering uncertainty can be applied. These approac...
Chapter
Full-text available
This chapter describes three general strategies to master uncertainty in technical systems: robustness, flexibility and resilience. It builds on the previous chapters about methods to analyse and identify uncertainty and may rely on the availability of technologies for particular systems, such as active components. Robustness aims for the design of...
Article
Full-text available
In service, milling tools have to cope with severe levels of thermal and mechanical load. Especially temperature influences the damage behavior of a tool’s cutting edge by influencing material properties and thermally induced stresses. It is therefore of relevance to gain quantitative information on the thermal tool load situation. Information on t...
Book
Die mehrstufige Bearbeitung mittels Stufenwerkzeugen stellt eine in der industriellen Serienfertigung oftmals eingesetzte Zerspanungsaufgabe dar. Aufgrund der engen Tolerierung hinsichtlich Form und Lage der Ventilführung und des Ventilsitzes im Zylinderkopf eines Verbrennungsmotors ist eine spanende Nachbearbeitung beider Bauteile unumgänglich. Da...
Article
Full-text available
Fine machining processes are of great importance in automotive series production, e.g. the machining of valve guide and seat in the cylinder head of a combustion engine. In industrial manufacturing processes, disturbances are inevitable and provide a measure of uncertainty in each production step. Increasingly, the influence of such uncertainties i...
Article
Full-text available
Narrow tolerances are commonly used to control uncertainty in the production of technicalcomponents. However, narrow tolerances lead to financial expense and limit flexibility. In this paperthe concept of a resilient process chain is presented. This concept covers the product life cycle phases ofproduction and usage. It is enabled by the digitaliza...
Article
Aufeinanderfolgende Umform- und Zerspanungsprozesse stellen im industriellen Umfeld eine typische Wertschöpfungskette dar. Die Auswirkungen von Unsicherheit werden in solchen Prozessketten bislang nur in Einzelprozessen untersucht. Gegenstand der Untersuchungen im Sonderforschungsbereich 805 ist die Entwicklung einer verketteten, geregelten Prozess...
Article
The reliable and precise machining of cylinder head components in the combustion engine represents a crucial and complicated step in the production process. In industrial manufacturing processes, disturbances are inevitable and provide a measure of uncertainty in each production step. Increasingly, the influence of such uncertainties is being evalu...
Article
In production processes uncertainty has a great impact on the product quality as well as production costs. In automotive industry the reaming of valve guides in a cylinder head of a combustion engine is a quality determining process. Due to the force fitting of the valve guides into the cylinder head the final reaming process has to deal with incre...
Article
The bore quality is influenced by machine’s accuracy, work piece and tool errors as well as handling errors. This uncertainty has a huge impact on the quality of the finished bore. During reaming, the majority of tool deflection arises during the unsteady process phase. The entry phase is regarded as the biggest influencing factor for the reamer’s...

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