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Effect of Dwell-times on Crack Propagation in Superalloys
Gas turbines are widely used in industry for power generation and as a power source at "hard to reach" locations where other possibilities for electrical supply are insufficient. There is a strong need for greener energy, considering the effect that pollution has had on global warming, and we need to come up with ways of producing cleaner electricity. A way to achieve this is by increasing the combustion temperature in gas turbines. This increases the demand on the high temperature performance of the materials used e.g. superalloys in the turbine. These high combustion temperatures can lead to detrimental degradation of critical components. These components are commonly subjected to cyclic l...
Cracks in superalloys
Gas turbines are widely used in industry for power generation and as a power source at hard to reach locations where other possibilities for electrical power supplies are insufficient. New ways of producing greener energy is needed to reduce emission levels. This can be achieved by increasing the combustion temperature of gas turbines. High combustion temperatures can be detrimental and degrade critical components. This raises the demands on the high temperature performance of the superalloys used in gas turbine components. These components are frequently subjected to different cyclic loads combined with for example dwell-times and overloads at elevated temperatures, which can influence the ...
Residual stresses, fatigue and deformation in cast iron
The complex geometry of cylinder heads in heavy-duty diesel engines makes grey iron or compact graphite iron a preferred material choice due to its price, castability, thermal conductivity and damping capacity. Today’s strict emission laws have increased the demands on engine performance and engine efficiency. This means that material properties such as fatigue resistance need to be improved. Shot peening is often used to improve the fatigue resistance of components and the benefits of shot peening are associated with the induced compressive surface stresses and surface hardening. How different shot peening parameters can affect fatigue strength of grey and compact graphite iron has been i...
Piezoelectricity, Phase Stability, and Surface Diffusion in Multicomponent Nitrides
The last hundred years have been full of scientific discoveries leading to technological advances, such as, computers, smart phones, etc. Most of the advances would not have been possible without new discoveries within the vast field of materials science. The specific area within materials science covered in this thesis is multicomponent nitride alloys, which are commonly used as thin films in industrial applications, e.g., as hard wear-resistant coatings for cutting-tools or as part of intricate electronic components in mobile telecommunication devices. The core of this thesis is towards the fundamental understanding of existing, and the discovery of new, nitride alloys using theoretical to...
Residual Stresses 2016
This book presents the proceedings of the International Conference on Residual Stresses 10 and is devoted to the prediction/modelling, evaluation, control, and application of residual stresses in engineering materials. New developments, on stress-measurement techniques, on modelling and prediction of residual stresses and on progress made in the fundamental understanding of the relation between the state of residual stress and the material properties, are highlighted. The proceedings offer an overview of the current understanding of the role of residual stresses in materials used in wide ranging application areas.
Sustainability in Art, Fashion and Wine
The art, fashion and wine industries are currently at various stages in their efforts to embrace and transition towards sustainability. While sustainability commitments are a necessary condition for progress, they are not sufficient. Instead, there is a need for sweeping transformative change that includes giving serious consideration to indigenous worldviews without recolonizing them. Sustainability in Art, Fashion and Wine includes findings from recent research and contributes to a new understanding of familiar concepts such as sustainability, (de)colonization and corporate responsibility in the art, fashion and wine industries by adopting critical lenses and incorporating them with innova...
AIDS Bibliography
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Relict Species
Mankind has evolved both genetically and culturally to become a most successful and dominant species. But we are now so numerous and our technology is so p- erful that we are having major effects on the planet, its environment, and the b- sphere. For some years prophets have warned of the possible detrimental consequences of our activities, such as pollution, deforestation, and overfishing, and recently it has become clear that we are even changing the atmosphere (e. g. ozone, carbon dioxide). This is worrying since the planet’s life systems are involved and dependent on its functioning. Current climate change – global w arming – is one recognised consequence of this larger problem. To...
Residual Stresses 2018
The European Conference on Residual Stresses (ECRS) series is the leading European forum for scientific exchange on internal and residual stresses in materials. It addresses both academic and industrial experts and covers a broad gamut of stress-related topics from instrumentation via experimental and modelling methodology up to stress problems in specific processes such as welding or shot-peening, and their impact on materials properties. Chapters: Diffraction Methods; Mechanical Relaxation Methods; Acoustic and Electromagnetic Methods; Composites, Nano and Microstructures; Films, Coatings and Oxides; Cold Working and Machining; Heat Treatments and Phase Transformations; Welding, Fatigue and Fracture: Stresses in Additive Manufacturing.
Emotionen
Das Handbuch führt erstmals die vielseitigen Traditionen der Emotionsforschung zusammen. Den Anfang macht eine historische Betrachtung der Emotions- und Affekttheorien von der Antike bis zur Moderne. Dem folgt eine umfassende Übersicht zentraler Emotionskonzepte der Gegenwart, wie sie in Psychologie und Philosophie diskutiert werden. Vor dem Hintergrund dieser Konzepte und ihrer historischen Verortung entfaltet das Handbuch eine umfassende Typologie der Emotionen. Verschiedenste Komplexe – wie etwa Trauer, Melancholie und Depression oder Freude, Glück und Wohlbefinden – werden jeweils in den Sichtweisen unterschiedlicher Disziplinen dargelegt, darunter Ethnologie, Philosophie, Literaturwissenschaft, Soziologie, Psychologie. Abschließend werden entlang zentraler Konzepte wie Sprache, Kultur, Politik und Medien vier wesentliche Fluchtlinien aktueller Emotionsforschung entfaltet, welche den Horizont einzelner Disziplinen überschreiten und entsprechend in interdisziplinärer Perspektive erschlossen werden.
