Thomas Neitzert

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This paper investigates a technique to find an optimal set of conditions for an isothermal process to extrude a product for a given shape and material properties with minimal defects. The inputs to this model are: the product geometry and its material data such as flow curve and microstructure during dynamic recrystallization. This is an inverse problem and(More)
The aim of this paper is to explore and recommend a rational basis for setting up a retention regime for a given project. Despite a century of practice, there is no theory to provide guidance yet. Using insights gained from the recently developed theories on monetary retentions, this study argues that retention regimes should be designed to cater for the(More)
This paper presents a key performance indicator (KPI) concept for the implementation of Lean methodologies in a manufacture-to-order (MTO) small and medium enterprise (SME). Within a case study the concept is developed and improved. The purpose of the measurement system is to monitor the early Lean implementation process. The paper explores the current(More)
Project alliancing involves the active collaboration of construction project owners and nonowner participants (designer, contractors, and suppliers) to deliver projects in an atmosphere of shared responsibilities and liabilities. Alliancing connotes integration but in real practice, it fails to create a true alliance environment since only part of the value(More)
The goal is to build up an inverse model capable of finding the average grain size history during an extrusion process and other material constants by using simulated strain and temperature values. This problem of finding the parameter values is based on linear and nonlinear least-squares regressions, coupled with microstructure control models and the(More)
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