Sökning: "Fatigue"

Visar resultat 11 - 15 av 1008 avhandlingar innehållade ordet Fatigue.

1. 11. Direct Calculation of Wave-Induced Loads and Fatigue Damage of Container Vessels

   Författare :Zhiyuan Li; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; fatigue; stress concentration factor; direct calculation; Container ship; fatigue routing; wave-induced torsion.; extreme loading; nonlinear wave loads;

   Sammanfattning : Container ships and their rules for fatigue design are in several ways differentcompared with other types of commercial ships such as tankers and bulk carriers. Forexample, most modern container ships have a pronounced bow flare and an overhangstern. LÄS MER

3. 12. High Temperature Fatigue Behaviour of Austenitic Stainless Steel : Microstructural Evolution during Dwell-Fatigue and Thermomechanical Fatigue

   Författare :Hugo Wärner; Mattias Calmunger; Johan Moverare; Guocai Chai; Sten Johansson; Martina Zimmermann; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : The global energy consumption is increasing and together with global warming from greenhouse gas emission, a need for more environmentally friendly energy production processes is created. Higher efficiency of biomass power plants can be achieved by increasing temperature and pressure in the boiler section, this would increase the generation of electricity along with the reduction in emission of greenhouse gases e. LÄS MER

4. 13. Very high cycle fatigue of automotive steels : Testing and computation at 20 kHz

   Författare :Mohamed Sadek; Jens Bergström; Nils Hallbäck; Ulrich Krupp; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Very high cycle fatigue; ultrasonic fatigue testing; automotive steels; fatigue strength; stress intensity computation; crack growth; Materialteknik; Materials Engineering;

   Sammanfattning : Mechanical fatigue failure occurs in components subjected to cyclic loading. A crack initiates at critical regions in the component and propagates during repeated loading. The expected fatigue life depends on the level, type and frequency of the loading. LÄS MER

5. 14. 3D-printing for Aerospace : Fatigue Behaviour of Additively Manufactured Titanium

   Författare :Magnus Kahlin; Johan Moverare; Hans Ansell; Gianni Nicoletto; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; additive manufacturing; fatigue; post processing; crack growth; Ti6Al4V; aerospace; additiv tillverkning; 3D-printing; flyg; utmattning; titan;

   Sammanfattning : Laser powder bed fusion (L-PBF) and electron beam powder bed fusion (E-PBF) are two of the most common additive manufacturing (AM) methods which both provide the engineer with a great freedom of design.This means that parts with light weight, multifunctional applications and improved performance could be achieved through innovative design solutions which have attracted a lot of interest from the aerospace industry. LÄS MER

7. 15. Fatigue in individuals with multiple sclerosis : lived experiences and perceived impact in daily life

   Författare :Gullvi Flensner; Birgitta Engström; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; action-theory; cooling; daily life; fatigue; perceived health; phenomenology; scale testing; MEDICINE; MEDICIN; Nursing; Vårdvetenskap;

   Sammanfattning : The overall aim of this thesis was to gain knowledge about experiences of fatigue among individuals diagnosed with MS and to compare these experiences with those of individuals in the general population. Individuals' experiences of fatigue have been approached both inductively and deductively and qualitative and quantitative research methods have been combined. LÄS MER