Essays about: "thesis cycling"

Showing result 21 - 25 of 131 essays containing the words thesis cycling.

1. 21. Phenomenological Swelling Model of Battery Module

   University essay from KTH/Hållfasthetslära

   Author : Abhiram Lakshmipuram Govindaraj; [2022]
   Keywords : State-of-Charge; Swelling Force; Compression Pads; Laddningsgrad; svällningskraft; kompressionsdynor;

   Abstract : Lithium-ion batteries (LiBs) are the most popular choice in the shift towardselectrification due to their high volumetric energy and power density. An importantaspect to study is the effect of swelling on the mechanical performance of LiBsas it plays an important role in determining the forces in the battery module. READ MORE

3. 22. Prognostics for Condition Based Maintenance of Electrical Control Units Using On-Board Sensors and Machine Learning

   University essay from Linköpings universitet/Fordonssystem

   Author : Gabriel Fredriksson; [2022]
   Keywords : machine learning; random forest; random survival forest; condition based maintenance; cbm; reliability; solder joint failure; thermomechanical cycling; ECU; lifetime prediction; data-driven; statistics; BGA; PCBA; field quality; maintenance; truck; bus; vehicle;

   Abstract : In this thesis it has been studied how operational and workshop data can be used to improve the handling of field quality (FQ) issues for electronic units. This was done by analysing how failure rates can be predicted, how failure mechanisms can be detected and how data-based lifetime models could be developed. READ MORE

4. 23. Food Delivery Couriers and the City : From Humans to Objects. From Objects to Place Makers.The City as the Aftermath of Posthuman Encounters.

   University essay from Malmö universitet/Institutionen för konst, kultur och kommunikation (K3)

   Author : Guillermo Valladares López; [2022]
   Keywords : food delivery courier; agency; posthumanism; urban friction; placemaking;

   Abstract : In recent years, many academics have noticed the presence of food delivery couriers in theurban space. Likewise, activism has emerged calling for the recognition of food deliverycouriers, and many have addressed the dehumanization they have suffered by becomingcommodities and, thus, objects. READ MORE

5. 24. Prediction of battery lifetime using early cycle data : A data driven approach

   University essay from Umeå universitet/Institutionen för matematik och matematisk statistik

   Author : Isabelle Enholm; Olivia Valfridsson; [2022]
   Keywords : early prediction; Support Vector Regression; Elastic Net; battery lifetime; cycle life; battery degradation;

   Abstract : A form of laboratory tests are performed to determine battery degradation due to charging and discharging of batteries (cycling). This is done as part of quality assurance in battery production since a certain amount of degradation corresponds to the end of the battery lifetime. Currently, this requires a significant amount of cycling. READ MORE

6. 25. Hydrogen Fuel Cell Lifetime Simulation in Marine Applications

   University essay from KTH/Kraft- och värmeteknologi

   Author : Yifeng Zhong; [2022]
   Keywords : maritime transportation; FEMFC; lifetime simulation; degradation mechanism; empirical relationship; semi-empirical approach; sjötransport; PEM-bränsleceller; livslängdssimulering; nedbrytningsmekanism; empiriskt samband; semi-empiriskt tillvägagångssätt;

   Abstract : Maritime transportation emits about 3% of global greenhouse gas, International Maritime Organization (IMO) aims to reduce shipping’s emissions by 50% with respect to 2008 levels. Proton exchange membrane fuel cells (PEMFCs) are considered among the most promising clean technologies for decarbonizing the maritime sector. READ MORE