Blar i NTNU Open på forfatter "Akulichev, Anton"
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Compression stress relaxation in carbon black reinforced HNBR at low temperatures
Akulichev, Anton; Alcock, Benjamin; Echtermeyer, Andreas (Journal article; Peer reviewed, 2017)Findings of a study of stress relaxation behaviour of hydrogenated nitrile butadiene rubber (HNBR) at nominal compressive strains up to 0.4 and temperatures above and below the glass transition temperature Tg are reported. ... -
Elastic recovery after compression in HNBR at low and moderate temperatures: Experiment and modelling
Akulichev, Anton; Alcock, Benjamin; Echtermeyer, Andreas T. (Journal article; Peer reviewed, 2017)Elastic recovery after compression or compression set is one of the key indicators of elastomer performance in sealing applications, such as O-rings in flange joints. In this work, findings of a study of the compression ... -
Elastomer viscoelasticity and performance of seals in coldclimate applications
Akulichev, Anton (Doctoral theses at NTNU;2017:295, Doctoral thesis, 2017)The Ph.D. thesis addresses the issues of elastomer seals operating in cold climate areas like Arctic. The work is devoted to a better understanding of low-temperature behaviour of elastomer seals near the glass transition ... -
HNBR elastomer composite with zero thermal contraction over a range of temperatures
Akulichev, Anton; Alcock, Benjamin; Protasov, Andrey; markin, pavel; Echtermeyer, Andreas (Journal article; Peer reviewed, 2019)Elastomers such as hydrogenated nitrile butadiene rubber (HNBR) are known to have inferior dimensional stability upon temperature changes compared to metallic materials. This can result in thermal contraction mismatches ... -
Interfacial leakage of elastomer seals at low temperatures
Akulichev, Anton; Echtermeyer, Andreas; Persson, B. N. J (Journal article; Peer reviewed, 2018)Interfacial leakage of air in hydrogenated nitrile butadiene rubber (HNBR) O-ring seals exposed to sub-ambient temperatures is studied. Flange-type fixtures with sealing surfaces produced by 3 different surface finish ... -
Long-term ISO 23936-2 sweet oil ageing of HNBR
Akulichev, Anton; Alcock, Benjamin; Krauklis, Andrey; Tiwari, Avinash; Echtermeyer, Andreas (Journal article; Peer reviewed, 2021)A hydrogenated nitrile butadiene rubber (HNBR) compound is subjected to ageing in a simulated oil and gas environment in accordance with ISO 23936-2 standard at two elevated temperatures (130 °C and 150 °C) for a period ... -
Thermomechanical properties of zirconium tungstate/hydrogenated nitrile butadiene rubber (HNBR) composites for low-temperature applications
Akulichev, Anton; Alcock, Benjamin; Tiwari, Avinash; Echtermeyer, Andreas Thorsten (Journal article; Peer reviewed, 2016)Rubber compounds for pressure sealing application typically have inferior dimensional stability with temperature fluctuations compared with their steel counterparts. This effect may result in seal leakage failures when ... -
Time-Temperature-Plasticization Superposition Principle: Predicting Creep of a Plasticized Epoxy
Krauklis, Andrey; Akulichev, Anton; Gagani, Abedin; Echtermeyer, Andreas (Journal article; Peer reviewed, 2019)Long-term creep properties and the effect of water are important for fiber reinforced polymer (FRP) composite materials used in offshore applications. Epoxies are often used as a matrix material in such composites. A typical ...