Blar i USN Open Archive på forfatter "Andreassen, Erik"

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    • High cycle fatigue life estimation of AlSi10Mg processed by laser powder bed fusion 

      Hovig, Even Wilberg; S. Azar, Amin; Sunding, Martin Fleissner; Sørby, Knut; M'hamdi, Mohammed; Andreassen, Erik (Journal article, 2018)
      Fatigue life is known to be dependent on the surface properties of the material. Surface roughness provokes local stress concentration and cause crack initiation even at minute cyclic loads. In laser powder bed fusion, the ...

    • High cycle fatigue life estimation of materials processed by laser powder bed fusion 

      Hovig, Even Wilberg; S. Azar, Amin; Sunding, Martin Fleissner; Andreassen, Erik; Sørby, Knut (Journal article; Peer reviewed, 2019)
      The fatigue life of metal components is known to depend on the surface topography. For components made by laser powder bed fusion, the roughness of the as‐built surfaces depends on the orientation of the component surface ...

    • New Encapsulation Concepts for Medical Ultrasound Probes – A Heat Transfer Simulation Study 

      Do, Nu Bich Duyen; Andreassen, Erik; Edwardsen, Stephen; Lifjeld, Anders; Nguyen, Hoang-Vu; Aasmundtveit, Knut; Imenes, Kristin (Chapter, 2019)
      Thermal management is important for medical ultrasound probes to maintain optimal performance, reliability, and lifetime of the devices, as well as to avoid heat-induced damage to the patients’ tissue. This paper presents ...

    • Thermal management of an interventional medical device with double layer encapsulation 

      Do, Nu Bich Duyen; Andreassen, Erik; Edwardsen, Stephen; Lifjeld, Anders; Aasmundtveit, Knut; Nguyen, Hoang-Vu; Imenes, Kristin (Peer reviewed; Journal article, 2021)
      This paper presents a thermal study of a double-layer encapsulation for an interventional medical device, which operates temporarily inside the human esophagus for cardiac imaging. The surface temperature of test samples, ...