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682 results on '"Hull, T."'

12. Development of a glue bonded shear connections aimed for mass timber composites.

Author

Hull, T., Ackerman, P., and Lacroix, D.

Abstract

Mass timber composites (MTCs) generally require stiff glued connections to meet serviceability design criteria; however, achieving stiff glued connections without conventional pressing infrastructure can necessitate alternative gap filling adhesives. A readily available construction adhesive with potential for use with alternative pressing methods is investigated to develop the needed information for its commercial application in MTCs. The glue line thickness, surface coverage, three contact pressures, and how these parameters influence the load-slip curve of the connection when loaded in pure shear are investigated. The average glue line thickness ranged from 0.76 to 0.33 mm, with lower pressures having thicker glue lines and higher pressures having thinner glue lines. The planning precision was found to be more critical than clamping pressure for glue line thickness. Based on glue bond thickness testing and fabrication experience it is recommended to use 1.2–1.4 mm2 of adhesive per mm width to create full coverage glue bonds without excessive adhesive squeeze out. When tested under pure shear, specimens were observed to fail with a mixture of wood and glue, with more glue failure present as the pressure was increased. The initial stiffness of the connection tended to increase with clamping pressure, while the strength tended to decrease. Two bi-linear data fit models are applied to determine the yield point and simplify the load-slip behaviour for use in design analysis. Overall, the 75% max load method better fit the behaviour and was simpler to apply. The shear strength and stiffness achieved experimentally across all pressures were comparable to other glue connection literature results, and when applied in the design of a 10 m long MTC ribbed panel all pressures achieved near fully composite action. Overall, the adhesive has shown to be an easy to apply and structurally viable connection alternative for MTCs. [ABSTRACT FROM AUTHOR]

Published
2024
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22. An approach for the identification of exemplar sites for scaling up targeted field observations of benthic biogeochemistry in heterogeneous environments

Author

Thompson, C. E. L., Silburn, B., Williams, M. E., Hull, T., Sivyer, D., Amoudry, L. O., Widdicombe, S., Ingels, J., Carnovale, G., McNeill, C. L., Hale, R., Marchais, C. Laguionie, Hicks, N., Smith, H. E. K., Klar, J. K., Hiddink, J. G., Kowalik, J., Kitidis, V., Reynolds, S., Woodward, E. M. S., Tait, K., Homoky, W. B., Kröger, S., Bolam, S., Godbold, J. A., Aldridge, J., Mayor, D. J., Benoist, N. M. A., Bett, B. J., Morris, K. J., Parker, E. R., Ruhl, H. A., Statham, P. J., and Solan, M.

Published
2017

24. International Consensus Definition of Low Anterior Resection Syndrome

Author

Keane, Celia, Fearnhead, Nicola S., Bordeianou, Liliana G., Christensen, Peter, Basany, Eloy Espin, Laurberg, Søren, Mellgren, Anders, Messick, Craig, Orangio, Guy R., Verjee, Azmina, Wing, Kirsty, Bissett, Ian, An, V, Bryant, A, Byrne, C, Chen, T, Croft, S, Clark, D, Gladman, M, Heriot, A, Kariappa, S, Keck, J, Lubowski, D, Dinning, P, Khera, A, Kirkwood, K, Petersen, D, Sloots, K, Totten, B, Weston, M, Andersen, P, Bachmann, C, Barht, H, Emmertsen, K, Faaborg, P, Gögenur, I, Ingerslev, P, Isaksen, D, Iversen, H, Iversen, L, Jacobsen, K, Jansen, T, Jocobsen, I, Juul, T, Kjar, D, Krogh, K, Majgaard, M, Mynster, A, Neuenschwander, A, Nielsen, C, Nielsen, R, Nielsen, M, Nielsen, T, Olsen, J, Poulsen, B, Rahr, H, Snedker, B, Sørensen, G, Stolzenburg, T, Vaabengaard, P, Acheson, A, Andreyev, J, Bach, S, Battersby, N, Bradbury, J, Brown, S, Cecil, T, Chapman, S, Chapman, M, Chave, H, Cook, T, Cuffy, L, Davies, J, Dawson, C, Dixon, J, Duff, S, Edwards, C, Geh, I, Hamilton, C, Hancock, L, Harji, D, Hill, J, Holtham, S, Jenkins, J, Johnston, R, Kapur, S, Maxwell-Armstrong, C, McArthur, D, Moran, B, Norton, C, Nugent, K, Pateman, L, Perston, Y, Rockall, T, Sagar, P, Saunders, M, Sebag-Montefiore, D, Senapati, A, Singh, B, Skaife, P, Sykes, H, Smart, N, Taylor, C, Thorpe, G, Tierney, G, Voyce, S, Walsh, C, Warren, O, Wheeler, J, Woodward, A, Winter, D, Abbott, S, Beban, V, Bennett, M, Chadwick, T, Collinson, R, Corbett, S, Dennett, E, Eglinton, T, Fraser, A, Glue, J, Hohaia, D, Menzi, E, O’Connor, M, Stevenson, D, Wells, C, Wolyncewicz, S, Woodfield, J, Bence, K, Boutros, M, Brueseke, M, DeKorte, J, Floruta, C, Francone, T, Frederick, F, Grasso, J, Gurland, B, Higgins, K, Hull, T, Keller, D, Laffan, A, Lovett, S, Marlatt, J, McAdams, D, McCarthy, C, Milch, H, Natale, S, Pappou, E, Paquette, I, Pulskamp, S, Rich, M, Savitt, L, Shafi, M, Steele, S, Stein, S, Tolbert, M, Varma, M, Vogler, S, Vuong, T, Wells, K, Wexner, S, Wo, J, Wright, J, Wunderlich, C, Campbell, K, Lim, M, Moug, S, Oliphant, R, Labaka-Aretaga, I, Ballester, C, Belen-Bueno, A, Vaquer-Casas, G, Jerez, J, Castillo, J, Paniagua-Cayetano, G, Codina-Cazador, A, Blanco-Colino, R, de la Portilla, F, Pascual-Damieta, M, Enriquez-Navascuez, JM, Martin-Fernández, M, Araujo-Ferreiro, M, Sanchez-García, C, Vico-García, E, Gallego-García, M, Jimenez, LM, Martinez-Sanchez, C, Carrillo-Moreno, J, Muñoz, A, Ramirez, L, Vigorita, V, Adams, R, Cornish, J, Davies, M, Evans, M, Torkington, J, and Turner, J

Published
2020
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29. Reconciling chemical flame retardant exposure and fire risk in domestic furniture.

Author

Whaley, Paul, Wattam, Stephen, Bedford, Clare, Bell, Nia, Harrad, Stuart, Jones, Nicola, Kirkbride, Thomas, Naldzhiev, Dzhordzhio, Payne, Elena, Wooding, Elli-Jo, and Hull, T. Richard

Subjects
FIREPROOFING agents, FIRE exposure, FIRE risk assessment, RISK exposure, FURNITURE, CONCEPT mapping
Abstract

Introduction: Evidence suggests that standards for resistance of furniture to ignition may lead to an increase in use of chemical flame retardants (CFRs). This is motivating the development of new approaches that maintain high levels of fire safety while facilitating a reduction in use of CFRs. However, reconciling potential fire risk with use of CFRs in relation to specific policy objectives is challenging. Objectives: To inform the development of a new policy in the UK for the fire safety of furniture, we developed for domestic furniture quantitative models of fire risk and potential for CFR exposure. We then combined the models to determine if any lower fire risk, higher CFR exposure categories of furniture were identifiable. Methods: We applied a novel mixed-methods approach to modelling furniture fire risk and CFR exposure in a data-poor environment, using literature-based concept mapping, qualitative research, and data visualisation methods to generate fire risk and CFR exposure models and derive furniture product rankings. Results: Our analysis suggests there exists a cluster of furniture types including baby and infant products and pillows that have comparable overall properties in terms of lower fire risk and higher potential for CFR exposure. Discussion: There are multiple obstacles to reconciling fire risk and CFR use in furniture. In particular, these include a lack of empirical data that would allow absolute fire risk and exposure levels to be quantified. Nonetheless, it seems that our modelling method can potentially yield meaningful product clusters, providing a basis for further research. [ABSTRACT FROM AUTHOR]

Published
2023
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