Blar i NTNU Open på forfatter "Alcock, Benjamin"
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A comparative study on the effect of hot/wet and hot/dry aging environments on the degradation of filament winded composites
Srivastava, Chaman; Strandlie, Are; Alcock, Benjamin; Grammatikos, Sotirios (Chapter, 2022)Predicting the long-term response of polymer composite materials is a continuous challenge to the composite industry. The service aging of structural composites has different effects on composites’ physicochemical behavior ... -
Comparison of the effect of thermal and hygrothermal sub-Tg aging on the durability and appearance of multilayered filament wound composite structure
Srivastava, Chaman; Alcock, Benjamin; Strandlie, Are; Grammatikos, Sotirios (Peer reviewed; Journal article, 2024)The study conducts an experimental investigation to compare the effect of accelerated aging on a glass fiber/vinylester matrix filament wound composite. Two static aging conditions, thermal and hygrothermal, were chosen. ... -
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. ... -
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 ... -
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 ... -
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 ... -
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 ... -
Self-Reinforced Polypropylene Composites based on Discontinuous Tapes - An Experimental and Numerical Study of the Influence of Tape Length
Goutianos, Stergios; Cabrera, Norbert; Alcock, Benjamin; Reynolds, Neil; Peijs, Ton (Peer reviewed; Journal article, 2020)The creation of highly oriented, coextruded polypropylene (PP) tapes allows the production of recyclable self-reinforced polypropylene (SRPP) or all-PP composites, with a large temperature processing window and high volume ... -
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 ... -
Three-Dimensional Analysis of Porosity in As-Manufactured Glass Fiber/Vinyl Ester Filament Winded Composites Using X-Ray Micro-Computed Tomography
Srivastava, Chaman; Agostino, Pietro; Stamopoulos, Antonios G.; Alcock, Benjamin; Strandlie, Are; Grammatikos, Sotirios (Peer reviewed; Journal article, 2023)Filament winding is a technique to manufacture tubular composite structures and, therefore, is among the most appealing techniques for fabricating critical structures such as hollow tubes. Despite the recent advances, these ...