Recent Submissions

  • Flow noise identification using acoustic emission (AE) energy decomposition for sand monitoring in flow pipeline. 

    Droubi, M. Ghazi; Reuben, R. L.; Steel, John A. (Elsevier https://doi.org/10.1016/j.apacoust.2017.10.016, 2017-10-18)
    DROUBI, M.G., REUBEN, R.L. and STEEL, J.I. 2018. Flow noise identification using acoustic emission (AE) energy decomposition for sand monitoring in flow pipeline. Applied acoustics [online], 131, pages 5-15. Available from: https://doi.org/10.1016/j.apacoust.2017.10.016
    In pipelines used for petroleum production and transportation, sand particles may be present in the multi-phase flow of oil and gas and water. The Acoustic Emission (AE) measurement technique is used in the field of sand ...
  • Synthesis, structural and morphological property of BaSnO3 nanopowder prepared by solid state ceramic method. 

    John, Jibi; Pillai, V. P. Mahadevan; Thomas, Anitta Rose; Philip, Reji; Joseph, Jaison; Muthunatesan, S.; Ragavendran, V.; Prabhu, Radhakrishna (IOP https://doi.org/10.1088/1757-899X/195/1/012007, 2017-05-11)
    JOHN, J., PILLAI, V.P.M., THOMAS, A.R., PHILIP, R., JOSEPH, J., MUTHUNATESAN, S., RAGAVENDRAN, V. and PRABHU, R. 2016. Synthesis, structural and morphological property of BaSnO3 nanopowder prepared by solid state ceramic method. IOP conference series: materials science and engineering [online], 195: proceedings of the 3rd structural nano composites conference (NANOSTRUC 2016), 12-15 September 2016, Aberdeen, UK, article ID 012007. Available from: https://doi.org/10.1088/1757-899X/195/1/012007
    BaSnO3 is a cubic perovskite-type oxide that behaves as an n-type semiconductor with a wide band gap of 3.4 eV and remains stable at temperatures up to 1000°C. It has wide applications such as thermally stable capacitors, ...
  • Computational study of nanostructured composite materials for photonic crystal fibre sensors. 

    Johny, Jincy; Prabhu, Radhakrishna; Fung, Wai-Keung (IOP https://doi.org/10.1088/1757-899X/195/1/012012, 2017-05-11)
    JOHNY, J., PRABHU, R. and FUNG, W.-K. 2016. Computational study of nanostructured composite materials for photonic crystal fibre sensors. IOP conference series: materials science and engineering [online], 195: proceedings of the 3rd structural nano composites conference (NANOSTRUC 2016), 12-15 September 2016, Aberdeen, UK, article ID 012012. Available from: https://doi.org/10.1088/1757-899X/195/1/012012
    Photonic Crystal Fibres (PCFs) developed using nanostructured composite materials provides special optical properties which can revolutionise current optical sensing technologies. The modal and propagation characteristics ...
  • Environmental particle emissions due to automated drilling of polypropylene composites and nanocomposites reinforced with talc, montmorillonite and wollastonite. 

    Starost, Kristof; Frijns, Evelien; Laer, J. V.; Faisal, Nadimul Haque; Egizabal, Ainhoa; Elizextea, Cristina; Nelissen, Inge; Blazquez, Maria; Njuguna, James (IOP https://doi.org/10.1088/1757-899X/195/1/012011, 2017-05-11)
    STAROST, K., FRIJNS, E., LAER, J.V., FAISAL, N., EGIZABAL, A., ELIZEXTEA, C., NELISSEN, I., BLAZQUEZ, M. and NJUGUNA, J. 2016. Environmental particle emissions due to automated drilling of polypropylene composites and nanocomposites reinforced with talc, montmorillonite and wollastonite. IOP conference series: materials science and engineering [online], 195: proceedings of the 3rd structural nano composites conference (NANOSTRUC 2016), 12-15 September 2016, Aberdeen, UK, article ID 012011. Available from: https://doi.org/10.1088/1757-899X/195/1/012011
    In this study, the effect on nanoparticle emissions due to drilling on Polypropylene (PP) reinforced with 20% talc, 5% montmorillonite (MMT) and 5% Wollastonite (WO) is investigated. The study is the first to explore the ...
  • Tensile and flexural properties of hybrid graphene oxide/epoxy carbon fibre reinforced composites. 

    Watson, G.; Starost, Kristof; Bari, Pravin; Faisal, Nadimul Haque; Mishra, Satyendra; Njuguna, James (IOP https://doi.org/10.1088/1757-899X/195/1/012009, 2017-05-11)
    WATSON, G., STAROST, K., BARI, P., FAISAL, N., MISHRA, S. and NJUGUNA, J. 2016. Tensile and flexural properties of hybrid graphene oxide/epoxy carbon fibre reinforced composites. IOP conference series: materials science and engineering [online], 195: proceedings of the 3rd structural nano composites conference (NANOSTRUC 2016), 12-15 September 2016, Aberdeen, UK, article ID 012009. Available from: https://doi.org/10.1088/1757-899X/195/1/012009
    In this study, nano-sized graphene oxide sheets were homogenously dispersed via sonication methods in epoxy followed by vacuum resin infusion for the fabrication of the epoxy, graphene oxide (GO) and micro-sized carbon ...
  • Oil based drilling fluid waste: an overview on highly reported but less explored sink for environmentally persistent pollutants. 

    Siddique, Shohel; Kwoffie, Lorraine; Addae-Afoakwa, Kofi; Yates, Kyari; Njuguna, James (IOP https://doi.org/10.1088/1757-899X/195/1/012008, 2017-05-11)
    SIDDIQUE, S., KWOFFIE, L., ADDAE-AFOAKWA, K., YATES, K. and NJUGUNA, J. 2016. Oil based drilling fluid waste: an overview on highly reported but less explored sink for environmentally persistent pollutants. IOP conference series: materials science and engineering [online], 195: proceedings of the 3rd structural nano composites conference (NANOSTRUC 2016), 12-15 September 2016, Aberdeen, UK, article ID 012008. Available from: https://doi.org/10.1088/1757-899X/195/1/012008
    Operational discharges of spent drilling fluid, produced water, and accumulated drill cuttings from oil and gas industry are a continuous point source of environmental pollution. To meet the strict environmental standard ...
  • An ensemble-boosting algorithm for classifying partial discharge defects in electrical assets. 

    Mas'ud, Abdullahi Abubakar; Ardila-Rey, Jorge Alfredo; Albarracin, Ricardo; Muhammad-Sukki, Firdaus (MCPI https://doi.org/10.3390/machines5030018, 2017-08-08)
    MAS'UD, A.A., ARDILA-REY, J.A., ALBARACIN, R. and MUHAMMAD-SUKKI, F. 2017. An ensemble-boosting algorithm for classifying partial discharge defects in electrical assets. Machines [online], 5(3), article ID 18. Available from: https://doi.org/10.3390/machines5030018
    This paper presents an ensemble-boosting algorithm (EBA) for classifying partial discharge (PD) patterns in the condition monitoring of insulation diagnosis applied for electrical assets. This approach presents an optimization ...
  • Elaboration of properties of graphene oxide reinforced epoxy nanocomposites. 

    Bari, Pravin; Khan, Samrin; Njuguna, James; Mishra, Satyendra (Springer https://doi.org/10.1007/s12588-017-9180-9, 2017-05-18)
    BARI, P., KHAN, S., NJUGUNA, J. and MISHRA, S. 2017. Elaboration of properties of graphene oxide reinforced epoxy nanocomposites. International journal of plastic technology [online], 21(1), pages 194-208. Available from: https://doi.org/10.1007/s12588-017-9180-9
    In this research work, properties of graphene oxide (GO) based epoxy nanocomposites, prepared via the solution blending method, are elaborated. Different loadings (0.1-0.5 wt%) of GO were added into epoxy resin, and their ...
  • Novel esterification reaction from biomass product by coupled acetate membrane and catalysts for ethyl lactate separation. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Elsevier, 2017-09-08)
    OKON, E., SHEHU, H. and GOBINA, E. 2017. Novel esterification reaction from biomass product by coupled acetate membrane and catalysts for ethyl lactate separation. International journal of hydrogen energy [online], In Press. Available from: https://doi.org/10.1016/j.ijhydene.2017.07.230
    This study presents the effect of combined membrane separation and heterogeneous catalysts for the production of ethyl lactate solvent. The enhanced process is a flat sheet cellulose acetate membrane and cation-exchange ...
  • Mixed-mode fracture characteristics of metal-to-metal adhesively bonded joints: experimental and simulation methods. 

    Droubi, M. Ghazi; McAfee, Jack; Horne, Ruairidh C.; Walker, S.; Klaassen, Callum; Crawford, A.; Prathuru, Anil Kumar; Faisal, Nadimul Haque (Elsevier https://doi.org/10.1016/j.prostr.2017.07.059, 2017-09-06)
    DROUBI, M.G., MCAFEE, J., HORNE, R.C., WALKER, S., KLAASSEN, C., CRAWFORD, A., PRATHURU, A.K. and FAISAL, N.H. 2017. Mixed-mode fracture characteristics of metal-to-metal adhesively bonded joints: experimental and simulation methods. Procedia structural integrity [online]: proceedings of the 2nd international structural integrity conference (ICSI 2017), 4-7 September 2017, Madeira, Portugal, 5, pages 40-47. Available from: https://doi.org/10.1016/j.prostr.2017.07.059
    Fracture behavior of adhesively bonded joints subjected to mixed-mode (i.e. mode I+II) loading conditions is of importance in many industrial applications. This research therefore aims to characterise the failure behaviour ...
  • Comparison of the performance of artificial neural networks and fuzzy logic for recognizing different partial discharge sources. 

    Mas'ud, Abdullahi Abubakar; Ardila-Rey, Jorge Alfredo; Albarracin, Ricardo; Muhammad-Sukki, Firdaus; Bani, Nurul Aini (MDPI https://doi.org/10.3390/en10071060, 2017-01-16)
    MAS'UD, A.A., ARDILA-REY, J.A., ALBARRACIN, R., MUHAMMAD-SUKKI, F. and BANI, N.A. 2017. Comparison of the performance of artificial neural networks and fuzzy logic for recognizing different partial discharge sources. Energies [online], 10(7), article number 1060. Available from: https://doi.org/10.3390/en10071060
    This paper compared the capabilities of the artificial neural network (ANN) and the fuzzy logic (FL) approaches for recognizing and discriminating partial discharge (PD) fault classes. The training and testing parameters ...
  • A photocatalytic impeller reactor for gas phase heterogeneous photocatalysis. 

    Tokode, Oluwatosin; Prabhu, Radhakrishna; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier https://doi.org/10.1016/j.jece.2017.07.068, 2017-07-29)
    TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2017. A photocatalytic impeller reactor for gas phase heterogeneous photocatalysis. Journal of environmental chemical engineering [online], 5(4), pages 3942-3948. Available from: https://doi.org/10.1016/j.jece.2017.07.068
    A novel photocatalytic reactor based on a stirred tank configuration has been described. This reactor employs the use of photocatalytic impellers to aid the mass transport of gaseous organic compounds during photocatalytic ...
  • Assessment of nanoparticles release into the environment during drilling of carbon nanotubes/epoxy and carbon nanofibres/epoxy nanocomposites. 

    Starost, Kristof; Frijns, Evelien; Van Laer, Jo; Faisal, Nadimul Haque; Egizabal, Ainhoa; Elizextea, Cristina; Blazquez, Maria; Nelissen, Inge; Njuguna, James (Elsevier https://doi.org/10.1016/j.jhazmat.2017.06.057, 2017-06-27)
    STAROST, K., FRIJNS, E., VAN LAER, J., FAISAL, N., EGIZABAL, A., ELIZEXTEA, C., BLAZQUEZ, M., NELISSEN, I. and NJUGUNA, J. 2017. Assessment of nanoparticles release into the environment during drilling of carbon nanotubes/epoxy and carbon nanofibres/epoxy nanocomposites. Journal of hazardous materials [online], 340, pages 57-66. Available from: https://doi.org/10.1016/j.jhazmat.2017.06.057
    The risk assessment, exposure and understanding of the release of embedded carbon nanotubes (CNTs) and carbon nanofibers (CNFs) from commercial high performance composites during machining processes is yet to be fully ...
  • Evaluation of the performance of α-alumina nano-porous ceramic composite membrane for esterification applications in petroleum refinery. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Elsevier https://doi.org/10.1016/j.cattod.2017.05.089, 2017-06-10)
    OKON, E., SHEHU, H. and GOBINA, E. 2017. Evaluation of the performance of α-alumina nano-porous ceramic composite membrane for esterification applications in petroleum refinery. Catalysis today [online], In Press. Available from: https://doi.org/10.1016/j.cattod.2017.05.089
    The carrier gas permeation performance through α-alumina nano-porous ceramic membrane was investigated in this study. The four carrier gases used for the study were argon (Ar), helium (He), nitrogen (N2) and carbon dioxide ...
  • Influence of post-treatment on the microstructural and tribomechanical properties of suspension thermally sprayed WC-12 wt%Co nanocomposite coatings. 

    Ali, O.; Ahmed, R.; Faisal, Nadimul Haque; Alanazi, Nayef M.; Berger, L.-M.; Kaiser, A.; Toma, F.-L.; Polychroniadis, E. K.; Sall, M.; Elakwah, Y.O.; Goosen, M. F. A. (Springer https://doi.org/10.1007/s11249-017-0815-y, 2017-01-19)
    ALI, O., AHMED, R., FAISAL, N.H., ALANAZI, N.M., BERGER, L.-M., KAISER, A., TOMA, F.-L., POLYCHRONIADIS, E.K., SALL, M., ELAKWAH, Y.O. and GOOSEN, M.F.A. 2017. Influence of post-treatment on the microstructural and tribomechanical properties of suspension thermally sprayed WC-12 wt%Co nanocomposite coatings. Tribology letters [online], 65(2), article 33. Available from: https://doi.org/10.1007/s11249-017-0815-y
    The potential to improve the tribomechanical performance of HVOF-sprayed WC-12Co coatings was studied by using aqueous WC-12Co suspensions as feed-stock. Both as-sprayed and hot-isostatic-pressed (HIPed) coatings were ...
  • Study on the structural, morphological and optical properties of RF-sputtered dysprosium-doped barium tungstate thin films. 

    Hridya, S.; Kavitha, V. S.; Chalana, S. R.; Reshmi Krishnan, R.; Sreeja Sreedharan, R.; Suresh, S.; Nampoori, V. P. N.; Sankararaman, S.; Prabhu, Radhakrishna; Pillai, V. P. Mahadevan (Springer https://doi.org/10.1007/s11837-017-2360-4, 2017-04-27)
    HRIDYA, S., KAVITHA, V.S., CHALANA, S.R., RESHMI KRISHNAN, R., SREEJA SREEDHARAN, R., SURESH, S., NAMPOORI, V.P.N., SANKARARAMAN, S., PRABHU, R. and MAHADEVAN PILLAI, V.P. 2017. Study on the structural, morphological and optical properties of RF-sputtered dysprosium-doped barium tungstate thin films. Journal of the minerals, metals and materials society [online], Online First. Available from: https://doi.org/10.1007/s11837-017-2360-4
    Barium tungstate films with different Dy3+ doping concentrations, namely 0 wt.%, 1 wt.%, 3 wt.% and 5 wt.%, are deposited on cleaned quartz substrate by radio frequency magnetron sputtering technique and the prepared films ...
  • Futuristic nanomaterials and composites: part II. 

    Kim, Chang-Soo; Lehmhus, Dirk; Njuguna, James; Paramsothy, Muralidharan; Shofner, Meisha Lei (Springer https://doi.org/10.1007/s11837-015-1685-0, 2015-10-28)
    KIM, C-S., LEHMHUS, D., NJUGUNA, J., PARAMSOTHY, M. and SHOFNER, M.L. 2015. Futuristic nanomaterials and composites: part II. JOM [online], 68(1), pages 261-264. Available from: https://doi.org/10.1007/s11837-015-1685-0
    The present special topic "Futuristic Nanomaterials and Composites: Part II" is a continuation of last month's topic "Futuristic Nanomaterials and Composites: Part I". In this continuation, inspiration is once again drawn ...
  • Thermal, mechanical and rheological behaviors of nanocomposites based on UHMWPE/paraffin oil/carbon nanofiller obtained by using different dispersion techniques. 

    Visco, Annamaria; Yousef, Samy; Galtieri, Giovanna; Nocita, Davide; Pistone, Alessandro; Njuguna, James (Springer https://doi.org/10.1007/s11837-016-1845-x, 2016-02-19)
    VISCO, A., YOUSEF, S., GALTIERI, G., NOCITA, D., PISTONE, A. and NJUGUNA, J. 2016. Thermal, mechanical and rheological behaviors of nanocomposites based on UHMWPE/paraffin oil/carbon nanofiller obtained by using different dispersion techniques. JOM [online], 68(4), pages 1078-1089. Available from: https://doi.org/10.1007/s11837-016-1845-x
    Ultra-high molecular weight polyethylene (UHMWPE) is a very attractive polymer employed as a high performance material. For its high viscosity, dispersion of fillers is considered a critical point in UHMWPE nanocomposites ...
  • Preparation and analysis of multi-layered hybrid nanostructures. 

    Khobragade, Prashant S.; Hansora, D. P.; Naik, Jitendra B.; Njuguna, James; Mishra, Satyendra (Elsevier https://doi.org/10.1016/j.clay.2016.08.022, 2016-09-01)
    KHOBRAGADE, P.S., HANSORA, D.P., NAIK, J.B., NJUGUNA, J. and MISHRA, S. 2016. Preparation and analysis of multi-layered hybrid nanostructures. Applied clay science [online], 132-133, pages 668-674. Available from: https://doi.org/10.1016/j.clay.2016.08.022
    In this study, we report a simple and efficient (bath ultrasonication) method for the preparation of multi-functional layered hybrid nanostructures using graphene oxide (GO) and modified Mg-Al layered double hydroxides ...
  • The effect of nanosilica (SiO2) and nanoalumina (Al2O3) reinforced polyester nanocomposites on aerosol nanoparticle emissions into the environment during automated drilling. 

    Starost, Kristof; Frijns, Evelien; Van Laer, Jo; Faisal, Nadimul Haque; Egizabal, Ainhoa; Elizextea, Cristina; Nelissen, Inge; Blazquez, Maria; Njuguna, James (Taylor and Francis http://dx.doi.org/10.1080/02786826.2017.1330535, 2017-05-24)
    STAROST, K., FRIJNS, E., VAN LAER, J., FAISAL, N., EGIZABAL, A., ELIZEXTEA, C., NEILSSEN, I., BALZQUEZ, M. and NJUGUNA, J. 2017. The effect of nanosilica (SiO2) and nanoalumina (Al2O3) reinforced polyester nanocomposites on aerosol nanoparticle emissions into the environment during automated drilling. Aerosol science and technology [online], 51(9), pages 1035-1046. Available from: http://dx.doi.org/10.1080/02786826.2017.1330535
    The aim of this study is to investigate the effect nanosilica and nanoalumina has on nanoparticle release from industrial nanocomposites due to drilling for hazard reduction whilst simultaneously obtaining the necessary ...

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