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vrijdag 1 februari 2019

Vacature PhD position: Laser Implantation Surface Texturing (LITex) �C Fundamentals and applications of a new laser...

PhD position: Laser Implantation Surface Texturing (LITex) �C Fundamentals and applications of a new laser�\based additive manufacturing process
The Chair of Laser Processing in the Faculty of Engineering Technology of the University of Twente (The Netherlands) has an opening for a PhD candidate in the research area of laser-based manufacturing. A growing economic and social demand for reducing the environmental impact of manufacturing, while improving product integrity and downstream operations, demands outstanding process & product surface control. Currently, the surface finish of rolled products such as in steel production, serving a wide range of market sectors (e.g. automotive, packaging, energy and construction) is achieved by roughness transfer from temper mill rolls textured by methods developed more than 3 decades ago. Such methods also often require or rely on the use of (post�\treatment) Chrome�\plating to negate roll wear and improve product consistency. A step�\change in roll texturing technologies is therefore required to enable functional surface design of innovative products, reduce material losses in...
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PhD project Comprehensive monitoring and prediction of seismicity
The PhD candidate will be employed at the chair Stochastic Operations Research at the University of Twente (see www.utwente.nl/eemcs/sor/ in the project 'Comprehensive monitoring and prediction of seismicity within the Groningen gas field using large scale field observations', which is embedded in the national research programme DeepNL funded by the Dutch Research Council. The induced seismicity of the Groningen gas field can only be understood through the relation between gas extraction and subsurface response. To understand the dynamics of the system new approaches are required that are based on observational data. In the project, we will monitor the seismicity and determine stress changes, reservoir compaction and deformation of the overlying layers from seismic data. Advanced tools based on machine learning, model order reduction and supercomputing will be developed to model the recorded seismograms and to detect subsurface variations. Changes in earthquake risk due to changes...
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Postdoc position ( 2 years) on simulation of compression molding of discontinuous fiber reinforced thermoplastic flakes
The ThermoPlastic composites Research Center (TPRC) and University of Twente are looking for a postdoctoral researcher on the topic of compression molding of chopped unidirectional fiber reinforced thermoplastic flakes. Project description The projects concerns the compression molding of chopped unidirectional fiber reinforced flakes, which is a manufacturing process that is very suitable for a broad range of automotive and aero structural parts. Compression molding of discontinuous fiber reinforced thermoplastics combines short processing times with good mechanical performance of produced parts. Moreover, it allows for a large degree of freedom in terms of design. During the molding, the compound is subjected to flow due to redistribution in the mold and filling of details like ribs. The material flow affects the fiber orientation distribution in the part, which in turn influences the mechanical properties. Prediction of mold filling behavior and the resulting fiber orientation...
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