Essays about: "damage curves"

Showing result 1 - 5 of 16 essays containing the words damage curves.

1. 1. Characterisation of Ionic Liquid doped Polybenzimidazole Membranes for Application in High-Temperature Proton Exchange Membrane Fuel Cells

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Adam Jacobsson Trönndal; [2023]
   Keywords : Fuel cells; Phosphoric acid; Polybenzimidazole; PA-PBI; Ionic liquid; IL; High temperature proton exchange membrane fuel cell; HT-PEMFC; Electrochemical impedance spectroscopy; EIS; IL-PBI; Chemical engineering; Technology and Engineering;

   Abstract : In this study four membranes were tested and evaluated against each other for use in high-temperature proton exchange membrane fuel cell (HT-PEMFC) applications. A phosphoric acid (PA) doped polybenzimidazole (PBI) membrane, was used as a reference as the current state-of-the-art. READ MORE

3. 2. Collision Risk for Migratory Birds Facing Wind Energy Installations in Europe in Relation to Wind Energy Production

   University essay from Uppsala universitet/Institutionen för elektroteknik

   Author : Damire Ariel Haydee Rojas Tito; [2021]
   Keywords : ;

   Abstract : The increasing presence of wind energy installations is faced with citizen and political resistance often founded on the potential damage these can impose on fauna such as birds. This resistance is an obstacle to the necessary introduction of more weather-based renewable electricity sources due to the consequences of fossil-fuel electricity generation. READ MORE

4. 3. SUSTAINABLE LUBRICATION FOR FUTURE TRANSMISSIONS : Micropitting performance of Glycerol-based lubricants

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Zapata Tamayo Juan Guillermo; [2021]
   Keywords : micropitting; mild sliding wear; surface coating; diamond-like carbon DLC; glycerol-based lubrication; green lubricant; rolling contact fatigue; rolling-sliding;

   Abstract : Achieving sustainable lubrication by using environmentally friendly formulated lubricants has became an essential component of the transition process from fossil-powered vehicles to electrified transportation. Mixtures, or aqueous solutions of molecules such as polyhydroxy alcohols, and glycols usually known as green lubricants make it possible to achieve low friction coefficients under different lubrication conditions, which constitutes a potential alternative to improve the tribological performance of moving parts in automotive systems, at the same time that the environmental requirements are satisfied. READ MORE

5. 4. Fatigue Testing of a Unidirectional Carbon Fiber Reinforced Polymer : Investigation of damage development using Digital Image Correlation

   University essay from KTH/Lättkonstruktioner

   Author : Lars Johan Wenner Berg; [2020]
   Keywords : ;

   Abstract : Carbon Fibre Reinforced Plastic (CFRP) is a material with high specific propertiesand good fatigue and vibration dampening characteristics, and can potentiallybe used instead of steel and aluminium in heavy duty vehicles. This work focuseson testing methodology and the fatigue properties of a unidirectional (UD)material in the 0° and 90°orientation, reproducing and validating the method developedby Wanner[1]. READ MORE

6. 5. Comet assay: Monitoring time-dependent DNA-fragmentation in two different types of cells, optimizing Flash-comet method for pig sperm analysis

   University essay from Uppsala universitet/Institutionen för farmaceutisk biovetenskap

   Author : Ewelina Rozwadowska; [2020]
   Keywords : Comet assay; Flash-comet; cell survival curves; TK6-cells; pig sperm;

   Abstract : DNA-damage, caused by different factors such as oxidative stress in cells, is common in living organisms. The damage includes DNA-fragmentation, such as single- and double strands breaks. READ MORE