Blar i NTNU Open på forfatter "Tiwari, Avinash"
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Adhesion between rubber and glass in dry and lubricated condition
Dorogin, Leonid; Tiwari, Avinash; Rotella, C; Mangiagalli, Paolo; Persson, Bo N.J. (Journal article; Peer reviewed, 2018)We study the adhesion between differently processed glass and filled bromobutyl rubber in dry conditions, in water, and in silicone oil. The boundary line between contact and non-contact in adhesion experiments can be ... -
Adhesion, Friction and Leakage in Contacts with Elastomers
Tiwari, Avinash (Doctoral theses at NTNU;2018:277, Doctoral thesis, 2018)Adhesion, friction and leakage in contacts with elastomers is central to many technologically demanding applications such as tires, seals, wiper blades and syringes to just name a few. These tribological systems are very ... -
The effect of hot air exposure on the mechanical properties and carbon dioxide permeability of hydrogenated nitrile butadiene rubber (HNBR) with varying carbon black content
Alcock, Benjamin; Peters, Thijs; Tiwari, Avinash (Peer reviewed; Journal article, 2020)The effect of hot air exposure at 150 �C for up to 12 weeks (ca. 2000 h) on the properties of hydrogenated nitrile butadiene rubber (HNBR) compounds with varying degrees of carbon black content was investigated and re-ported ... -
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 ... -
Rubber contact mechanics: adhesion, friction and leakage of seals
Tiwari, Avinash; Dorogin, Leonid; Tahir, M; Stöckelhuber, Klaus Werner; Heinrich, Gert; Espallargas, Nuria; Persson, B. N. J (Journal article; Peer reviewed, 2017)We study the adhesion, friction and leak rate of seals for four different elastomers: Acrylonitrile Butadiene Rubber (NBR), Ethylene Propylene Diene (EPDM), Polyepichlorohydrin (GECO) and Polydimethylsiloxane (PDMS). ... -
Rubber friction: The contribution from the area of real contact
Tiwari, Avinash; Miyashita, N; Espallargas, Nuria; Persson, Bo N.J. (Journal article; Peer reviewed, 2018)There are two contributions to the friction force when a rubber block is sliding on a hard and rough substrate surface, namely, a contribution Fad = τf A from the area of real contact A and a viscoelastic contribution Fvisc ... -
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 ...