Browsing SINTEF Open by Author "Andreassen, Erik"
Now showing items 1-9 of 9
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Adhesion between thermoplastic elastomers and polyamide‐12 with different glass fiber fractions in two‐component injection molding
Persson, Anna-Maria Märta Ruth; Hinrichsen, Einar L; Andreassen, Erik (Peer reviewed; Journal article, 2020)The usage of thermoplastic elastomers (TPEs) is increasing, and integrated hard‐soft parts can be mass produced by two‐component injection molding (or sequential molding). A key property of such parts, the adhesion between ... -
Cyclic Compression Testing of Three Elastomer Types— A Thermoplastic Vulcanizate Elastomer, a Liquid Silicone Rubber and Two Ethylene-Propylene-Diene Rubbers
Persson, Anna-Maria Märta Ruth; Andreassen, Erik (Peer reviewed; Journal article, 2022)Thermoplastic elastomer vulcanizate (TPV) and liquid silicone rubber (LSR) are replacement candidates for ethylene-propylene-diene rubbers (EPDM), as they offer the possibility for twocomponent injection moulding. In this ... -
Determination of Anisotropic Mechanical Properties for Materials Processed by Laser Powder Bed Fusion
Hovig, Even Wilberg; S. Azar, Amin; Grytten, Frode; Sørby, Knut; Andreassen, Erik (Peer reviewed; Journal article, 2019)Improving the success rate in additive manufacturing and designing highly optimized structures require proper understanding of material behaviour. This study proposes a novel experimental method by which anisotropic ... -
The Effect of Fiber Concentration on Fiber Orientation in Injection Molded Film Gated Rectangular Plates
Jørgensen, Jens Kjær; Andreassen, Erik; Salaberger, Dietmar (Peer reviewed; Journal article, 2017) -
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, ... -
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; Peer reviewed, 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 ... -
On the temperature dependence of the cyclic compression behaviour of a thermoplastic vulcanizate elastomer
Persson, Anna-Maria Märta Ruth; Hinrichsen, Einar L; Andreassen, Erik (Peer reviewed; Journal article, 2022)Effects of temperature on the uniaxial cyclic compression of a polypropylene based thermoplastic vulcanizate were studied in the range −40 °C–100 °C. The effect of temperature on the stress level was similar to that on the ... -
Simultaneous improvement of surface finish and bonding of centrifugal microfluidic devices in cyclo-olefin polymers
Vereshchagina, Elizaveta; Andreassen, Erik; Batalden, Jørn; Plassen, Martin; Mielnik, Michal Marek (Chapter, 2018)Two key issues in the manufacturing of microfluidic devices are to obtain low surface roughness, i.e. in the range of nanometers (to facilitate optical detection and controlled flow through microfluidic networks), and to ... -
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, ...