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Development and Implementation of a Joining-Technology Selector for Multi-Material Joints

Cagdas, Fevzi and Sikora, Sebastian P. (2020) Development and Implementation of a Joining-Technology Selector for Multi-Material Joints. Master's, Hochschule Esslingen.

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Car manufacturers have to follow strict environmental regulations. This is one of the reasons for the increase of lightweight design concepts, which is often realised in the form of multi-material structures. The problem with this is finding suitable joining technologies which is especially challenging for smaller companies with limited resources. For this reason, this work investigated the automated selection of joining technologies for complex multi-material structures. In this regard, the following hypothesis was tested: 'If an appropriate selection methodology is implemented in a program, then it is possible to select the optimal joining technology for a given multi-material joining problem from an underlying database.' Furthermore, research questions regarding database structures, selection methodologies and programming have been answered. Seven fundamental selection approaches from previous research have been analysed and investigated on their compliance with set requirements. It was found that none of the selection methodologies is able to satisfy every requirement which necessitated the creation of a new approach. The new methodology was created by combining the questionnaire and free search approach and has been implemented into a Python program with a built-in graphical user interface. The required technical data was collected from 158 single-lap shear joint experiments from research and stored in a hierarchical database with multiple linked data-tables. Using two examples as a validation method, it was concluded that the created tool is an efficient and effective way to identify the optimal joining technology. As such, the hypothesis was accepted and the JTS is considered to be a powerful, resource efficient tool for the assistance of selecting joining technologies for multi-material structures.

Item URL in elib:https://elib.dlr.de/139743/
Document Type:Thesis (Master's)
Title:Development and Implementation of a Joining-Technology Selector for Multi-Material Joints
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:March 2020
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Number of Pages:90
Keywords:joining, automated choice, Python, questionnaire
Institution:Hochschule Esslingen
Department:Graduate School of Design and Development for Mechanical and Automotive Engineering
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Fahrzeugstruktur II, V - Energie und Verkehr
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Material and Process Applications for Road and Rail Vehicles
Institute of Vehicle Concepts
Deposited By: Sikora, Sebastian
Deposited On:12 Jan 2021 15:03
Last Modified:12 Jan 2021 15:03

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