Now showing items 1982-2001 of 2456

    • Radiation therapy and training effects on the mechanical performance of bone 

      Auestad, Martin Fridheim (Master thesis, 2021)
      Med stadig stigende forventet levealder oppstår nye aldersrelaterte utfordringer. Eksponering for både osteoporotiske brudd og kreft øker med alder, og flere tilfeller oppdages siden ny teknologi for medisinsk undersøkelse ...
    • Railway bridge damage detection using vehicle-based inertial measurements and apparent profile 

      Quirke, Paraic; Bowe, Cathal; OBrien, Eugene J; Cantero, Daniel; Antolin, Pablo; Goicolea, Jose Maria (Journal article; Peer reviewed, 2017)
      The presence of damage in a railway bridge alters its stiffness and consequently, its static and dynamic response to loading. The dynamic response of a railway bridge to loading produces a dynamic response in the passing ...
    • Railway catenary tension force monitoring via the analysis of wave propagation in cables 

      Derosa, Stefano; Nåvik, Petter Juell; Collina, Andrea; Rønnquist, Anders (Peer reviewed; Journal article, 2020)
      The tensioning forces applied to the contact wire in a railway catenary system influence the performance of the line. In this paper, a method to monitor the status of such tensioning forces is proposed based on the dependency ...
    • Railway track loss-of-stiffness detection using bogie filtered displacement data measured on a passing train 

      Malekjafarian, A.; OBrien, Eugene J; Quirke, Paraic; Cantero, Daniel; Golpayegani, Fatemeh (Peer reviewed; Journal article, 2021)
      This paper presents an innovative numerical framework for railway track monitoring using acceleration measurements from sensors installed on a passenger train. A numerical model including a 10 degrees of freedom train ...
    • Raman antenna effect from exciton–phonon coupling in organic semiconducting nanobelts 

      Wang, Mao; Gong, Yi; Alzina, Francesc; Svoboda, Ondrej; Ballesteros, , Belén; Sotomayor Torres, Clivia M.; Xiao, Senbo; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2017)
      The highly anisotropic interactions in organic semiconductors together with the soft character of organic materials lead to strong coupling between nuclear vibrations and exciton dynamics, which potentially results in ...
    • Ramming av stålrørspeler med bergspisser mot fjell: Forsøk og numeriske analyser 

      Tveito, Sveinung Jørgensen (Master thesis, 2010)
      Det er i denne masteroppgaven sett på oppførselen til stålrørspeler med påmonterte pelspisser underramming mot fjell. Bakgrunnen for oppgaven er et FoU-prosjekt i regi av Statens Vegvesen igangsatt for å øke kunnskapen ...
    • Rate dependent fracture of monolithic and laminated glass: Experiments and simulations 

      Osnes, Karoline; Børvik, Tore; Hopperstad, Odd Sture (Peer reviewed; Journal article, 2020)
      Glass is a brittle material known to possess large scatter in its fracture strength, which is caused by the existence of microscopic surface flaws. Fracture in glass generally originates from stress concentrations around ...
    • Rate-dependent mechanical behaviour of semilunar valves under biaxial deformation: From quasi-static to physiological loading rates 

      Anssari-Benam, Afshin; Tseng, Yuan-Tsan; Holzapfel, Gerhard; Bucchi, Andrea (Peer reviewed; Journal article, 2020)
      In this study we investigate the rate-dependency of the mechanical behaviour of semilunar heart valves under biaxial deformation, from quasi-static to physiological loading rates. This work extends and complements our ...
    • Reaction mechanisms of wood ash for use as a partial cement replacement 

      Sigvardsen, Nina Marie; Geiker, Mette Rica; Ottosen, Lisbeth M. (Peer reviewed; Journal article, 2021)
      An increase in the produced amounts of wood ashes (WAs) is seen worldwide. In this study, the potential use of two representative WAs as a partial cement replacement is investigated. The WAs originate from combustion of ...
    • Reactivity tests for supplementary cementitious materials: RILEM TC 267-TRM phase 1 

      Li, Xuerun; Snellings, Ruben; Antoni, Mathieu; Alderete, Natalia Mariel; Ben Haha, Mohsen; Bishnoi, Shashank; Cizer, Özlem; Cyr, Martin; De Weerdt, Klaartje; Dhandapani, Yuvaraj; Duchesne, Josée; Haufe, Johannes; Hooton, Doug; Juenger, Maria; Kamali-Bernard, Siham; Kramar, Sabina; Marroccoli, Milena; Joseph, Aneeta Mary; Parashar, Anuj; Patapy, Cedric; Provis, John L.; Sabio, Sergio; Santhanam, Manu; Steger, Laurent; Sui, Tongbo; Telesca, Antonio; Vollpracht, Anya; Vargas, Felipe; Walkley, Brant; Winnefeld, Frank; Ye, Guang; Zajac, Maciej; Zhang, Shizhe; Scrivener, Karen L. (Journal article; Peer reviewed, 2018)
      A primary aim of RILEM TC 267-TRM: “Tests for Reactivity of Supplementary Cementitious Materials (SCMs)” is to compare and evaluate the performance of conventional and novel SCM reactivity test methods across a wide range ...
    • Reassessment of the integrity of a partially failed glulam structure 

      Volnes, Christoffer (Master thesis, 2014)
      Background: This study will seek to determine if the partial failure ofa glulam roof in 2011 was only due to a measured accidental overload of1,6kN/m^2 more than planned for in the design, and also whether the sur-viving ...
    • RECOLO: A Python package for the reconstruction of surface pressure loads from kinematic fields using the virtual fields method 

      Olufsen, Sindre Nordmark; Kafumann, Rene; Fagerholt, Egil; Aune, Vegard (Peer reviewed; Journal article, 2022)
    • Recommendations of RILEM TC 287-CCS: thermo-chemo-mechanical modelling of massive concrete structures towards cracking risk assessment 

      Azenha, Miguel; Kanavaris, Fragkoulis; Schlicke, Dirk; Jędrzejewska, Agnieszka; Benboudjema, Farid; Honorio, Tulio; Šmilauer, Vít; Serra, Carlos; Forth, John; Riding, Kyle; Khadka, Binod; Sousa, Carlos; Briffaut, Matthieu; Lacarrière, Laurie; Koenders, Eduardus; Kanstad, Terje; Klausen, Anja Birgitta Estensen; Torrenti, Jean-Michel; Fairbairn, Eduardo M. R. (Peer reviewed; Journal article, 2021)
      These recommendations have been prepared by the corresponding working group within RILEM TC 287-CCS “Early-age and long-term crack width analysis in RC structures”, following work by the previously ceased RILEM TC 254-CMS ...
    • Recommended practice for reporting experimental data produced from studies on corrosion of steel in cementitious systems 

      Isgor, O. Burkan; Angst, Ueli M; Geiker, Mette Rica; Halmen, Ceki; Hansson, Carolyn M; Pacheco, José F.; Tepke, David; Trejo, David; Vaddey, Naga Pavan (Journal article; Peer reviewed, 2019)
      Experience has shown that many aspects of experimental design for studying steel corrosion in cementitious systems may significantly influence the obtained results. In the absence of standardized methods to study steel ...
    • Reconfigurable Mechanical Anisotropy in Self-Assembled Magnetic Superstructures 

      Håkonsen, Verner; Singh, Gurvinder; De Toro, Jose Angel; Normile, Peter S; Wahlström, Erik; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2021)
      Enhancement of mechanical properties in self-assembled superstructures of magnetic nanoparticles is a new emerging aspect of their remarkable collective behavior. However, how magnetic interactions modulate mechanical ...
    • Reconstruction of surface pressures on flat plates impacted by blast waves using the Virtual Fields Method 

      Kaufmann, Rene; Olufsen, Sindre Nordmark; Fagerholt, Egil; Aune, Vegard (Peer reviewed; Journal article, 2023)
      An accurate description of surface pressure loads imposed by blast waves is crucial for the design of the next generation of blast-resistant structures. However, experimental techniques for non-intrusive, full-field surface ...
    • Reduced order modelling for linear elastic problems with geometric variation 

      Palm, Tor Eivind (Master thesis, 2019)
      Formålet med denne oppgaven er å undersøke bruken av reduserte modeller for å løse parametriske partielle differensialligninger. Dette vil bli gjort ved å konstruere og analysere reduserte modeller innen konstruksjonsmekanikk ...
    • REDWIN – REDucing cost in offshore WINd by integrated structural and geotechnical design 

      Skau, Kristoffer Skjolden; Page, Ana M.; Kaynia, Amir M.; Løvholt, Finn; Norén-Cosgriff, Karin; Sturm, Hendrik; Andersen, H.S.; Nygaard, Tor Anders; Jostad, Hans Petter; Eiksund, Gudmund Reidar; Havmøller, O.; Strøm, P.; Eichler, D. (Journal article; Peer reviewed, 2018)
      The cost of offshore wind energy production has to be reduced continuously to improve its competitiveness compared to other energy sources. To contribute to this goal, a 4- year research project REDWIN – REDucing cost of ...
    • Rehabilitation of Cableway posts, Longyearbyen 

      Enevoldsen, Kristin (Master thesis, 2022)
      Taubanebukkene formidler byens gruvehistorie og er kategorisert som kulturminner. Grunnet varmere klima vil temperaturene i bakken øke og det aktive laget nå dypere. Dette fører til økte setninger og deformasjoner når ...
    • Reinforcement corrosion in carbonated fly ash concrete 

      Revert, Andres Belda (Doctoral theses at NTNU;2018:230, Doctoral thesis, 2018)
      The cement industry contributes about 8% of the anthropogenic CO2 emissions, partly due to large consumption of cement and the emissions associated with the production (for Portland cement (PC) approximately 800 kg/t). One ...