• A shock tube facility to generate blast loading on structures 

      Aune, Vegard; Fagerholt, Egil; Langseth, Magnus; Børvik, Tore (Journal article; Peer reviewed, 2016)
      This study evaluates the performance of a new shock tube facility used to produce blast loading in controlled laboratory environments. The facility was found to generate a planar shock wave over the tube cross section by ...
    • Comparing In Situ DIC Results from an Etched Surface with a Gold Speckled Surface 

      Paulsen, Christian Oen; Fagerholt, Egil; Børvik, Tore; Westermann, Ida (Journal article; Peer reviewed, 2019)
      A ferrite-pearlite two-phase steel was investigated using in situ scanning electron microscope (SEM) tensile testing combined with digital image correlation (DIC). Two different speckled patterns were used and compared. ...
    • Experimental study on the response of thin aluminium and steel plates subjected to airblast loading 

      Aune, Vegard; Fagerholt, Egil; Hauge, Kristoffer Olsen; Langseth, Magnus; Børvik, Tore (Journal article; Peer reviewed, 2016)
      This work presents results from an experimental investigation on the influence of stand-off distance on the dynamic response of thin ductile plates subjected to airblast loading. The square plates had an exposed area of ...
    • Field Measurements in Mechanical Testing Using Close-Range Photogrammetry and Digital Image Analysis 

      Fagerholt, Egil (Doktoravhandlinger ved NTNU, 1503-8181; 2012:95, Doctoral thesis, 2012)
      This thesis contains a study on using numerical post-processing of recorded digital images from mechanical experiments to obtain continuous measurements of both displacement and strain fields of a particular specimen ...
    • Hydroplastic response of a square plate due to impact on calm water 

      Abrahamsen, Bjørn Christian; Alsos, Hagbart Skage; Aune, Vegard; Fagerholt, Egil; Faltinsen, Odd Magnus; Hellan, Øyvind (Peer reviewed; Journal article, 2020)
      This paper investigates large, plastic deflections of a square plate due to impact on calm water. Most research in the area has examined linear elastic structural responses to such impact, but hydrodynamic responses during ...
    • Identification of Material Properties of an Aluminium Alloy 

      Nordhaug, Marie (Master thesis, 2017)
      Uniaxial tension tests of small versus large round specimens and small versus large flat specimens from a 3XXX series aluminium alloy were carried out to identify the mechanical properties of the material. Different ...
    • Low-velocity impact on high-strength steel sheets: An experimental and numerical study 

      Gruben, Gaute; Langseth, Magnus; Fagerholt, Egil; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2016)
      Low-velocity impact tests were performed on dual-phase and martensitic steel sheets and compared with corresponding quasi-static tests. The geometry and loading condition of the specimens were similar to formability tests, ...
    • A robust line-tracking photogrammetry method for uplift measurements of railway catenary systems in noisy backgrounds 

      Jiang, Tengjiao; Frøseth, Gunnstein Thomas; Rønnquist, Anders; Fagerholt, Egil (Peer reviewed; Journal article, 2020)
      For electrical railways, contact wires are used to ensure stable and continuous power supply to trains operating on the infrastructure. One crucial design parameter used to control the catenary design is the vertical ...
    • μDIC: An open-source toolkit for digital image correlation 

      Olufsen, Sindre Nordmark; Andersen, Marius Endre; Fagerholt, Egil (Peer reviewed; Journal article, 2020)
      We here present a Digital Image Correlation toolkit, formulated as a Python package. This package aims at providing a complete toolkit for performing DIC analysis on experimental data, performing virtual experiments, as ...