Browsing NTNU Open by Author "Pettersen, Fredrik"
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An investigation on modeling principles and ageing behaviour of the lithium ion battery
Pettersen, Fredrik (Master thesis, 2020)Denne masteroppgaven omhandler batteriteknologi med fokus på litium-ionbatteriet. Litium-ionbatteriet er den dominerende batteriteknologien på markedet i dag og benyttes i et bredt spekter av applikasjoner, alt fra små ... -
Development and construction of Car for the Eco-marathon Competition
Severinsen, Andreas; Pettersen, Fredrik; Holmefjord, Magnus E (Master thesis, 2013)This report presents the continued work of the DNV Fuel Fighter 2012 project report. 13 students with 5 different fields of studies has worked to improve the 2012 car to compete in the Shell Eco-marathon 2013. This work ... -
Development and construction of Car for the Eco-marathon Competition
Severinsen, Andreas; Pettersen, Fredrik; Holmefjord, Magnus E (Master thesis, 2013)This report presents the continued work of the DNV Fuel Fighter 2012 project report. 13 students with 5 different fields of studies has worked to improve the 2012 car to compete in the Shell Eco-marathon 2013. This work ... -
Identification of Vibration Frequencies of Railway Bridges from Train-Mounted Sensors Using Wavelet Transformation
Gonen, Semih; Lau Leong Lee, Albert; Pettersen, Fredrik (Peer reviewed; Journal article, 2023)This article presents a novel methodology to extract the bridge frequencies from the vibrations recorded on train-mounted sensors. Continuous wavelet transform is used to distinguish the bridge frequencies from the other ...