Outputs (328)

Cavitation and the tensile strength of liquids under dynamic stressing (2004)
Journal Article
Williams, P. R., & Williams, R. L. (2004). Cavitation and the tensile strength of liquids under dynamic stressing. Molecular Physics, 102(19-20), 2091-2102. https://doi.org/10.1080/00268970412331292786

This paper discusses the differences between the results of various measurements of the effective tensile strength (F c ) of liquids in experiments involving a pulse of tension (‘negative pressure’) created by the reflection of a pressure pulse at a... Read More about Cavitation and the tensile strength of liquids under dynamic stressing.

Rheometrical aspects of the viscoelastic dispersion of shear waves in gel-like mechanical networks (1998)
Journal Article
Williams, P., & Williams, R. (1998). Rheometrical aspects of the viscoelastic dispersion of shear waves in gel-like mechanical networks. Journal of Non-Newtonian Fluid Mechanics, 78(2-3), 203-225. https://doi.org/10.1016/S0377-0257%2898%2900066-4

A modified form of the Gross-Marvin ladder model is used to simulate gelation processes in which α, the viscoelastic stress relaxation exponent in the Gel Equation, can be varied in the range O

Measurements of the Cavitation Threshold of Liquids Under Dynamic Stressing by Pulses of Tension (2002)
Presentation / Conference Contribution
Williams, P. R. W., & Williams, R. (2002, February). Measurements of the Cavitation Threshold of Liquids Under Dynamic Stressing by Pulses of Tension. Presented at NATO Advanced Research Workshop on Liquids Under Negative Pressure

This paper addresses discrepancies between the results of different measurements of the effective tensile strength F(F c ) of liquids, in experiments in which a pulse of tension (or ’negative pressure’) is created by the reflection of a pressure puls... Read More about Measurements of the Cavitation Threshold of Liquids Under Dynamic Stressing by Pulses of Tension.

A definition and valuation of the UK offsite construction sector: ten years on (2020)
Journal Article
Taylor, M. (2022). A definition and valuation of the UK offsite construction sector: ten years on. International journal of construction management, 22(15), 2877-2885. https://doi.org/10.1080/15623599.2020.1829783

Ten years on the offsite construction (OSC) industry continues to be held high as a panacea to the inefficiencies, labour shortages and environmental impact of the construction of our built environment. Speculation concerning the gross output and the... Read More about A definition and valuation of the UK offsite construction sector: ten years on.

Cavitation Properties of Oils Under Dynamic Stressing by Tension (2004)
Journal Article
Williams, P. R., & Williams, R. L. (2004). Cavitation Properties of Oils Under Dynamic Stressing by Tension. Journal of Fluids Engineering, 127(2), 282. https://doi.org/10.1115/1.1881692

We report measurements of the effective tensile strength FcFc of commercial “multigrade” oils (in the SAE viscosity grades 5W-30 and 10W-40) over a range of temperatures TT, which are representative of those encountered under their normal operating c... Read More about Cavitation Properties of Oils Under Dynamic Stressing by Tension.

Rheology of Dilute Polymer Solutions and Engine Lubricants in High Deformation Rate Extensional Flows Produced by Bubble Collapse (2004)
Journal Article
Barrow, M. S., Brown, S. W. J., Cordy, S., Williams, P. R., & Williams, R. L. (2004). Rheology of Dilute Polymer Solutions and Engine Lubricants in High Deformation Rate Extensional Flows Produced by Bubble Collapse. Journal of Fluids Engineering, 126(2), 162. https://doi.org/10.1115/1.1667889

We report a study of liquid jets formed by the collapse of bubbles under cavitationgenerated pressure waves. Such jets involve an extensional flow which is characterized by high rates of extension, the latter being relevant to considerations of the f... Read More about Rheology of Dilute Polymer Solutions and Engine Lubricants in High Deformation Rate Extensional Flows Produced by Bubble Collapse.

Improved Adaptive Impedance Matching for RF Front-End Systems of Wireless Transceivers (2020)
Journal Article
Alibakhshikenari, M., Virdee, B. S., Shukla, . P., See, C. H., Abd-Alhameed, R., Falcone, F., & Limiti, . E. (2020). Improved Adaptive Impedance Matching for RF Front-End Systems of Wireless Transceivers. Scientific Reports, 10(1), Article 14065 (2020). https://doi.org/10.1038/s41598-020-71056-0

In this paper an automatic adaptive antenna impedance tuning algorithm is presented that is based on quantum inspired genetic optimization technique. The proposed automatic quantum genetic algorithm (AQGA) is used to find the optimum solution for a l... Read More about Improved Adaptive Impedance Matching for RF Front-End Systems of Wireless Transceivers.

High Performance Metasurface-Based On-Chip Antenna for Terahertz Integrated Circuits (2020)
Presentation / Conference Contribution
Alibakhshikenari, M., Virdee, B. S., See, C. H., A. Abd-Alhameed, R., Falcone, F., & Limiti, E. (2020, July). High Performance Metasurface-Based On-Chip Antenna for Terahertz Integrated Circuits. Presented at 2020 Third International Workshop on Mobile Terahertz Systems (IWMTS), Essen, Germany

This paper presents a simple prototype of a metasurface-based on-chip antenna operating in 0.3-0.32 THz. The proposed structure is constructed from two layers of polyimide-substrates with thickness of 0.1mm that sandwich a middle metallic ground-plan... Read More about High Performance Metasurface-Based On-Chip Antenna for Terahertz Integrated Circuits.

Study on Improvement of the Performance Parameters of a Novel 0.41-0.47 THz On-Chip Antenna Based on Metasurface Concept Realized on 50um GaAs-Layer (2020)
Journal Article
Alibakhshikenari, M., Virdee, B. S., See, C. H., Shukla, P., Salekzamankhani, S., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2020). Study on Improvement of the Performance Parameters of a Novel 0.41-0.47 THz On-Chip Antenna Based on Metasurface Concept Realized on 50um GaAs-Layer. Scientific Reports, 10(1), Article 11034. https://doi.org/10.1038/s41598-020-68105-z

A feasibility study is presented on the performance parameters of a novel on-chip antenna based on metasurface technology at terahertz band. The proposed metasurface on-chip antenna is constructed on an electrically thin high-permittivity gallium ars... Read More about Study on Improvement of the Performance Parameters of a Novel 0.41-0.47 THz On-Chip Antenna Based on Metasurface Concept Realized on 50um GaAs-Layer.

Isolation Enhancement of Densely Packed Array Antennas with Periodic MTM-Photonic Bandgap for SAR and MIMO Systems (2019)
Journal Article
Alibakhshikenari, M., Virdee, B. S., Shukla, P., See, C. H., Abd-Alhameed, R., Falcone, F., Quazzane, K., & Limiti, E. (2020). Isolation Enhancement of Densely Packed Array Antennas with Periodic MTM-Photonic Bandgap for SAR and MIMO Systems. IET microwaves, antennas & propagation, 14(3), 183-188. https://doi.org/10.1049/iet-map.2019.0362

A metamaterial photonic bandgap (MTM-PBG) periodic structure is used as a decoupling frame to improve the isolation between transmit–receive (T/R) sections of densely packed array antenna in synthetic aperture radar (SAR) and multiple-input multiple-... Read More about Isolation Enhancement of Densely Packed Array Antennas with Periodic MTM-Photonic Bandgap for SAR and MIMO Systems.

High-Performance 50μm Silicon-Based On-Chip Antenna with High Port-To-Port Isolation Implemented by Metamaterial and SIW Concepts for THz Integrated Systems (2019)
Presentation / Conference Contribution
Alibakhshikenari, M., Virdee, B. S., See, C., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2019, September). High-Performance 50μm Silicon-Based On-Chip Antenna with High Port-To-Port Isolation Implemented by Metamaterial and SIW Concepts for THz Integrated Systems. Presented at 13th International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials, Rome, Italy

A novel 50μm Silicon-based on-chip antenna is presented that combines metamaterial (MTM) and substrate integrated waveguide (SIW) technologies for integration in THz circuits operating from 0.28 to 0.30 THz. The antenna structure comprises a square p... Read More about High-Performance 50μm Silicon-Based On-Chip Antenna with High Port-To-Port Isolation Implemented by Metamaterial and SIW Concepts for THz Integrated Systems.

Silicon-Based 0.450-0.475 THz Series-Fed Double Dielectric Resonator On-Chip Antenna Array Based on Metamaterial Properties for Integrated-Circuits (2019)
Presentation / Conference Contribution
Alibakhshikenari, M., Virdee, B. S., See, C., Abd-Alhameed, R., Falcone, F., & Limiti, E. (2019, September). Silicon-Based 0.450-0.475 THz Series-Fed Double Dielectric Resonator On-Chip Antenna Array Based on Metamaterial Properties for Integrated-Circuits. Presented at 13th International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials, Rome, Italy

The antenna array designed to operate over 0.450-0.475 Terahertz comprises two dielectric resonators (DRs) that are stacked vertically on top of each other and placed on the surface of the slot antenna fabricated on a silicon substrate using standard... Read More about Silicon-Based 0.450-0.475 THz Series-Fed Double Dielectric Resonator On-Chip Antenna Array Based on Metamaterial Properties for Integrated-Circuits.

Antenna for Ultra-Wideband Applications with Non-Uniform Defected Ground Plane and Offset Aperture-Coupled Cylindrical Dielectric Resonators (2019)
Journal Article
Zebiri, C., Sayad, D., Elfergani, I., Kosha, J., Mshwat, W., See, C. H., Lashab, M., Rodriguez, J., Sayidmarie, K. H., Obeidat, H., & Abd-Alhameed, R. (2019). Antenna for Ultra-Wideband Applications with Non-Uniform Defected Ground Plane and Offset Aperture-Coupled Cylindrical Dielectric Resonators. IEEE Access, 7, 166776-166787. https://doi.org/10.1109/ACCESS.2019.2949527

A new compact Cylindrical Dielectric Resonator Antenna (CDRA) with a defected ground for ultra-wideband applications is presented. The structure is based on two cylindrical dielectric resonators asymmetrically located with respect to the center of an... Read More about Antenna for Ultra-Wideband Applications with Non-Uniform Defected Ground Plane and Offset Aperture-Coupled Cylindrical Dielectric Resonators.

Reanalysis of some in situ compaction test results (2019)
Presentation / Conference Contribution
Imre, E., Lorincz, J., Trang, P., Casini, F., Guida, G., Fityus, S., Barreto, D., & Singh, V. (2019, September). Reanalysis of some in situ compaction test results. Presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE 2019), Reykjavik, Iceland

Brandl (1977) presents the grading curve results of an investigation of particle disintegration of natural sandy gravel and crushed stone bedding courses due to in situ compaction and the action of construction traffic in different civil engineering... Read More about Reanalysis of some in situ compaction test results.

Experimental assessment of stiffness and damping in rubber-sand mixtures at various strain levels (2019)
Presentation / Conference Contribution
Bernal-Sanchez, J., Mcdougall, J., Barreto, D., Marinelli, A., Dimitriadi, V., Anbazhagan, P., & Miranda, M. (2019, June). Experimental assessment of stiffness and damping in rubber-sand mixtures at various strain levels. Presented at 7th International Conference on Geotechnical Earthquake Engineering, Rome

The dynamic properties of shredded rubber-soil mixtures (ShRm), comprising a sub-rounded quartz sand combined with small rubber shreds at 0, 10, 20, 30% by mass, were investigated. Testing ranged from small strain, in resonant column apparatus, to la... Read More about Experimental assessment of stiffness and damping in rubber-sand mixtures at various strain levels.

Restaurierung antiker Tempel: Experimentelle Untersuchungen zum Ausziehverhalten von Verankerungen im Marmor (2008)
Journal Article
Kourkoulis, S., Papanicolopulos, S., Marinelli, A., & Vayas, I. (2008). Restaurierung antiker Tempel: Experimentelle Untersuchungen zum Ausziehverhalten von Verankerungen im Marmor. Bautechnik / Structural Engineering, 85(2), 109-119. https://doi.org/10.1002/bate.200810010

In restoration works of antique Greek temples individual marble blocks are connected together to form a single element, e.g. an architrave. Due to the demand of reversibility of the intervention, this is done in the Acropolis of Athens by means of ti... Read More about Restaurierung antiker Tempel: Experimentelle Untersuchungen zum Ausziehverhalten von Verankerungen im Marmor.

Säulen griechischer Tempel unter Erdbebenbeanspruchung (2007)
Journal Article
Vayas, I., Dasiou, M., & Marinelli, A. (2007). Säulen griechischer Tempel unter Erdbebenbeanspruchung. Bautechnik / Structural Engineering, 84(6), 388-396. https://doi.org/10.1002/bate.200710034

olumns of Greek Temples under seismic loading: Columns of ancient Greek Temples consist of accurately dressed individual blocks in total absence on binding mortars. The seismic response of such multi-drum structures is completely different than th... Read More about Säulen griechischer Tempel unter Erdbebenbeanspruchung.

A combined experimental and numerical study of the pull-out mechanism of threaded titanium bars embedded in marble blocks (2016)
Presentation / Conference Contribution
Kourkoulis, S. K., Marinelli, A., & Dakanali, I. (2016, June). A combined experimental and numerical study of the pull-out mechanism of threaded titanium bars embedded in marble blocks. Presented at ECCOMAS congress 2016: VII European Congress on Computational Methods in Applied Sciences and Engineering, Crete Island, Greece

The present study describes the first stage of an ongoing research project aiming to investigate the failure mechanisms activated when reinforcing bars are pulled-out from the body of the reinforced element. Attention is given to the progressive fail... Read More about A combined experimental and numerical study of the pull-out mechanism of threaded titanium bars embedded in marble blocks.

Elite mountain bike enduro competition: a study of rider hand-arm vibration exposure (2019)
Journal Article
Kirkwood, L. A., Taylor, M. D., Ingram, L. A., Malone, E., & Florida-James, G. D. (2019). Elite mountain bike enduro competition: a study of rider hand-arm vibration exposure. Journal of Science and Cycling, 8(1), 18-25. https://doi.org/10.28985/1906.jsc.04

Limited information is currently available regarding the hand-arm vibration (HAV) exposure 5 for professional off-road cyclists. Previous reports have suggested that commuting and 6 recreational cyclists are at risk of exceeding exposure limit values... Read More about Elite mountain bike enduro competition: a study of rider hand-arm vibration exposure.

Performance of Superconducting Generators with Different Topologies under Fault Conditions (2019)
Presentation / Conference Contribution
Guan, Y., Vedreno Santos, F., Azar, Z., Thomas, A., Li, G., Odavic, M., & Zhu, Z. (2018, April). Performance of Superconducting Generators with Different Topologies under Fault Conditions. Presented at The 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018), Liverpool, UK

This paper compares the short-circuit performance of superconducting (SC) generators with three different topologies, i.e., iron-cored stator and rotor, iron-cored stator and air-cored rotor, and air-cored stator and rotor. The analysis is based on t... Read More about Performance of Superconducting Generators with Different Topologies under Fault Conditions.