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Thermal Stability of Residual Stresses in Differently Deep Rolled Surface Layers of Steel SAE 1045
(2021-05-07)
The stability of compressive residual stresses generated by deep rolling plays a decisive role on the fatigue behavior of specimens and components, respectively. In this regard, deep rolling at elevated temperature has proven to be very effective in stabilizing residual stresses when fatigue analysis is conducted at ambient temperature. However, since residual stresses can be affected not only by plastic deformation but also when thermal energy is provided, it is necessary to analyze the influence of temperature and ...
Aufsatz
On the low-cycle fatigue behavior of thermo-mechanically processed high-strength aluminum alloys
(2021)
In the present work low-cycle fatigue experiments were carried out on thermo-mechanically processed AA6082 and AA7075 sheets to evaluate mechanical properties under cyclic loading. Different cooling rates imposed by use of tempered forming tools after solutionizing and subsequent aging treatment led to the formation of precipitates with differing sizes and morphologies. Specimens thermo-mechanically processed in tools with temperatures of 24 °C and 200 °C showed superior mechanical properties under both monotonic and ...
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Process Influences in the Combined Compacting and Back-Injection Process to Produce Back-Injected Self-Reinforced Composites (SRCs) – Analysis via Multiple Regression Modelling
(2021-11-21)
A new process to produce back-injected self-reinforced composites (SRCs) is presented. In contrast to other investigations on back-injection of SRCs, a process is presented which allows compacting and back injection of SRCs in one step where the SRCs are partly consolidated only via melt pressure inside the cavity. The mechanical properties of SRCs depend to a large extent on the process parameters of temperature and pressure during manufacture. These parameters are not yet known for back-injected areas. Sensors ...
Aufsatz
Inklusive Erwachsenenbildung umsetzen: Die Fortbildung des Projekts INAZ zur Qualifizierung und Professionalisierung der Lehrkräfte in der Erwachsenenbildung
(2021)
Im Zentrum dieses Beitrags steht die Fortbildung für inklusive Erwachsenenbildung, die sich an Kursleitende der Alphabetisierung und des Zweiten Bildungswegs richtet. Diese Fortbildung wurde aus der Praxis für die Praxis im BMBF-finanzierten Forschungsprojekt „Inklusive Bildung in der Alphabetisierungspraxis und im System des Zweiten Bildungswegs – Qualifikationen, Kompetenzen und Bedarfe des pädagogischen Personals“ (INAZ) entwickelt. Ziel des Projektes INAZ ist es, die Qualifikationen und Kompetenzen sowie die ...
Aufsatz
Bridge over troubled water: managing compatibility and conflict among thought collectives in sustainability science
(2021-12-01)
Sustainability transformations call forth new forms and systems of knowledge across society. However, few tools and processes exist for promoting dialogue among different interests and normative stances in knowledge co-creation. In this article, we build on the notion of thought collectives to argue that understanding and moderating normative tensions are necessary if sustainability science is to provide successful solutions. Drawing on an analysis of the normative tensions between rival high-tech and low-tech thought ...