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Coupling AltaRica models with optimization heuristics for the assessment of maintenance policies
(Master thesis, 2018)The main objective of this thesis is do maintenance optimization for a system using AltaRica simulation tools. Maintenance optimization is based on the assessment of maintenance policy. Stochastic simulation is applied to ... -
Crack initiation life in notched Ti-6Al-4V titanium bars under uniaxial and multiaxial fatigue: Synthesis based on the averaged strain energy density approach
(Journal article; Peer reviewed, 2017)The fatigue behaviour of circumferentially notched specimens made of titanium alloy, Ti-6Al-4V, has been analysed. To investigate the notch effect on the fatigue strength, pure bending, pure torsion and multiaxial ... -
Crack paths in multiaxial fatigue of C45 steel specimens and correlation of lifetime with the thermal energy dissipation
(Peer reviewed; Journal article, 2022)The work reports the observed fatigue damage of C45 steel specimens tested in a previous work under multiaxial loading conditions and its relationship with the thermal energy dissipation which has been used in the last ... -
Crack propagation and arrest of structural steels and pipelines
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:105, Doctoral thesis, 2008)Crack arrest of fast running cracks is an important issue for the safety of steel structures. Crack arrest design can prevent fatal damage of large structures by restricting the influence of the incidents. Therefore crack ... -
Crack propagation in a brittle DCB specimen assessed by means of the Williams? power expansion
(Journal article; Peer reviewed, 2019)A double cantilever beam geometry has been chosen in order to investigate the importance of the higher-order terms of the Williams’ power expansion for the crack path estimation. The crack propagation has been tested ... -
Cracked components under anti-plane loading: Recent outcomes and future developments
(Journal article; Peer reviewed, 2017)The existence of three-dimensional effects at cracks has been known for many years, but understanding has been limited, and for some situations still is. Understanding improved when the existence of corner point singularities ... -
Cracking Behaviors of Rock-Like Specimens Containing Two Sets of Preexisting Cross Flaws under Uniaxial Compression
(Journal article; Peer reviewed, 2019)Cross flaws occur widely in rock masses and play a crucial role in the failure of rock engineering. This article first experimentally studies the cracking behaviors of rock-like specimens containing two sets of preexisting ... -
Crane load position control using Lyapunov-based pendulum damping and nonlinear MPC position control
(Chapter, 2019)A crane control system is presented where the crane load can track a position trajectory with ultimately bounded pendulum motions of the load. This is done with an inner loop using a Lyapunov-based damping controller which ... -
Crane Maintenance in the Era of Industry 4.0
(Master thesis, 2017)Today s companies are facing a series of challenges, experiencing difficulty in increasingly specialized and competitive markets and demanding restructuring processes. The industry needs countermeasures to prove their place ... -
Crane Payload Stabilization using Lagrangian Kinematics and Euler Angles
(Master thesis, 2019)Denne oppgaven har som formål å teste en kontrollers evne til å stabilisere en nyttlast samtidig som kranen skal bevege seg i en forhåndsinnstilt bane for en rekke ulike situasjoner. Den presenterer bevegelsesligningene ... -
Crane Pose Estimation using IMU and Computer Vision
(Master thesis, 2022)Kranoperasjoner om bord på skip blir gjennomført til stadighet i maritim industri i dag. Slike kranoperasjoner er utsatt for lastsvingninger på grunn av skipets bevegelser. Lastsvingninger utgjør en risiko for både mennesker ... -
Creating Dynamic Requirements Through Iteratively Prototyping Critical Functionalities
(Journal article; Peer reviewed, 2016)This paper introduces the wayfaring model for requirement generation. Rather than pre-fixing requirements, we propose exploring unknown unknowns, and suggest finding and adapting the emerging set-based requirements while ... -
Creating the brain of Staale - A navigation system for an autonomous Ackermann-steered litter robot
(Master thesis, 2022)Søppel i gater og offentlige parker har økt drastisk de siste tiårene. Med påvirkning på dyreliv, vannkvalitet og menneskers oppfattelse av lokale områder, påvirker forsøpling miljøet negativt, både lokalt og globalt. I ... -
Creating the brain of Staale - A navigation system for an autonomous Ackermann-steered litter robot
(Master thesis, 2022)Søppel i gater og offentlige parker har økt drastisk de siste tiårene. Med påvirkning på dyreliv, vannkvalitet og menneskers oppfattelse av lokale områder, påvirker forsøpling miljøet negativt, både lokalt og globalt. I ... -
Creating your Own Tools: Prototyping Environments for Prototype Testing
(Journal article; Peer reviewed, 2019)Evaluating prototypes through prototype experiments is an essential part of most early stage, exploratory, product development processes. The rate at which prototypes are tested is often high and even incremental improvements ... -
Creep and high temperature fatigue performance of as buildselective laser melted Ti-based 6Al-4V titanium alloy
(Peer reviewed; Journal article, 2020)The present work focuses on the room and high temperature low-cycle fatigue and creep testing of Ti-6Al-4V manufactured by selective laser melting (SLM) or laser-based powder bed fusion process (LBPF). The fatigue specimens ... -
Creep behavior of v-notched components
(Journal article; Peer reviewed, 2017)Geometrical discontinues such as notches play a significant rule in structural integrity of the components, especially when the component is subjected to very severe conditions, such as the high temperature fatigue or ... -
Crevice corrosion of solution annealed 25Cr duplex stainless steels: Effect of W on critical temperatures
(Peer reviewed; Journal article, 2021)In this work, the influence of tungsten on the crevice corrosion resistance of three super duplex stainless steels (SDSS) containing 0.0, 0.6, and 2.1 wt.% W was determined. The PD-GS-PD technique was used to estimate the ... -
The Critical Distance Method to estimate the fatigue strength of notched additively manufactured titanium
(Peer reviewed; Journal article, 2020)The present investigation deals with the problem of performing the fatigue assessment of notched components made of 3D-printed titanium alloy Ti6Al4V when it is used in the as-manufactured condition. The notch fatigue ...