Daniel Semere
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View article: Prediction of Residual Stresses in Components Using the Contour Method
Prediction of Residual Stresses in Components Using the Contour Method Open
During machining the accumulated bulk stresses induced by previous shape forming process steps, such as forging, casting or additive manufacturing and subsequent heat treatment, will be released and cause undesirable geometry errors on the…
View article: Variation propagation modeling in multistage machining processes considering form errors and N-2-1 fixture layouts
Variation propagation modeling in multistage machining processes considering form errors and N-2-1 fixture layouts Open
Variation propagation modeling of multistage machining processes enables variation reduction by making an accurate prediction on the quality of a part. Part quality prediction through variation propagation models, such as stream of variati…
View article: Part Quality Prediction in Multistage Machining Processes with Fixtures Based on Locating Surfaces Using Dual Quaternions
Part Quality Prediction in Multistage Machining Processes with Fixtures Based on Locating Surfaces Using Dual Quaternions Open
The mathematical modelling of variation propagation in multistage machining processes helps to perform a quick analysis and diagnosis of the processes. The models for part quality prediction, such as Stream of Variation, include homogeneou…
View article: Variation propagation modelling in multistage machining processes using dual quaternions
Variation propagation modelling in multistage machining processes using dual quaternions Open
Variation propagation models play an important role in part quality prediction, variation source identification, and variation compensation in multistage manufacturing processes. These models often use homogenous transformation matrix, dif…
View article: A multilayer shallow learning approach to variation prediction and variation source identification in multistage machining processes
A multilayer shallow learning approach to variation prediction and variation source identification in multistage machining processes Open
Variation propagation modelling in multistage machining processes through use of analytical approaches has been widely investigated for the purposes of dimension prediction and variation source identification. Yet the variation prediction …
View article: Variation compensation in machining processes using dual quaternions
Variation compensation in machining processes using dual quaternions Open
The classical variation compensation methods that apply variation modeling are often based on homogenous transformation matrices and coordinate systems. However, the mathematical models are complicated, require large matrices and do not co…
View article: Taguchi’s Experimental Design Model Inspired IT Infrastructure Security Risk Assessment Methodology
Taguchi’s Experimental Design Model Inspired IT Infrastructure Security Risk Assessment Methodology Open
Taguchi’s experimental design model is extensively applied by the manufacturing and production industries to systematically simulate different system states through altering controllable and uncontrollable variables to ensure system reliab…
View article: Variation Propagation in Multistage Machining Processes Using Dual Quaternions
Variation Propagation in Multistage Machining Processes Using Dual Quaternions Open
The application of rigid transformations matrices in variation propagation has a long tradition in manufacturing community. However, the matrix-based modeling of variation propagation in multistage machining processes is complicated. Moreo…
View article: Machining Distortion Analysis of Aerospace Components using the Contour Method
Machining Distortion Analysis of Aerospace Components using the Contour Method Open
During machining the accumulated residual bulk stresses induced by previous shape forming process steps, such as forging, casting or additive manufacturing and subsequent heat treatment will be released. This may cause undesirable geometri…
View article: Model Construction and Empirical Research on Site Selection of Urban Logistics Distribution Center
Model Construction and Empirical Research on Site Selection of Urban Logistics Distribution Center Open
The rapid development of logistics technology profoundly affects and changes the traditional social economy. Logistics distribution center promotes the optimization of the structure of logistics industry and brings changes and development …
View article: Anomaly detection in Skin Model Shapes using machine learning classifiers
Anomaly detection in Skin Model Shapes using machine learning classifiers Open
The concept of Skin Model Shapes has been proposed as a method to generate digital twins of manufactured parts and is a new paradigm in the design and manufacturing industry. Skin Model Shapes use discrete surface representation schemes, s…
View article: Application on Automated Warehouse Simulation System in Location Optimization
Application on Automated Warehouse Simulation System in Location Optimization Open
Enterprise warehousing management level is the core link of logistics companies. The level of warehousing management plays a crucial role in improving the efficiency of the entire logistics. The ef ...
View article: Octree-Based Generation and Variation Analysis of Skin Model Shapes
Octree-Based Generation and Variation Analysis of Skin Model Shapes Open
The concept of Skin Model Shape has been introduced as a method for a close representation of manufactured parts using a discrete geometry representation scheme. However, discretized surfaces make irregular polyhedra, which are computation…
View article: Research on Development Mechanism of “Family Farm” under E-commerce
Research on Development Mechanism of “Family Farm” under E-commerce Open
Agricultural e-commerce will be the production and processing of agricultural products, organic combination of transportation storage and distribution sales process, the omni-directional into e-commerce system, through the computer informa…
View article: Knowledge Platform for Resistance Spot Welding
Knowledge Platform for Resistance Spot Welding Open
Virtual weldability testing and prototyping significantly reduces the time and cost needed in product and process development. However, implementation is often inhibited due to lack of accurate information, support tools and methods to cap…
View article: Geometric distortion analysis using a combination of the contour method and machining simulation
Geometric distortion analysis using a combination of the contour method and machining simulation Open
During machining the material removal releases residual stresses introduced by previous process steps. This causes geometric machining distortions and thereby high rejection rates and costs. By simulating the process chain it is possible t…
View article: Skin Model Based Tolerance and Variations Analysis
Skin Model Based Tolerance and Variations Analysis Open
Skin model of a workpiece is a discrete geometry representation of the physical interface between the workpiece and its environment. Skin model and the related operations are defined in GPS ISO 17450-1 standard. Skin models, in the form of…
View article: Digitalization of Process Planning of Spot Welding in Body-in-white
Digitalization of Process Planning of Spot Welding in Body-in-white Open
Process planning of spot welding for body-in-white automobile structures involves several experimental (physical) welding trials to set the process parameters. These experimental trials are crucial in ensuring the quality and efficiency of…