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| 1 | Evaluation of effectiveness of polymer coatings in reducing blastinduced deformation of steel plates显示文摘Incorporating elastomers such as polymers in protective structures to withstand high energetic dynamic loads,has gained significant interest.The main objective of this study is to investigate the influence of a Polyurea coating towards the blast-induced response in steel plates.As such,Polyurea coated steel plates were tested under near-field blast loads,produced by the detonation of 1 kg of spherical nitromethane charges,at a standoff distance of 150 mm.Mild steel(XLERPLATE 350)and high-strength steel(BIS80)plates with thicknesses of 10 mm were Polyurea coated with thicknesses of 6 mm and 12 mm on either the front(facing the charge)or the back face.The deformation profiles were measured using 3D scanning.Numerical simulations were performed using the non-linear finite element code LS-DYNA.The strain-dependent behaviour of the steel and Polyurea were represented by Johnson-cook and Money-Rivlin constitutive models,respectively.The numerical models were validated by comparing the plate deflection results obtained from the experiments and were then used in the subsequent parametric study to investigate the optimum thickness of the Polyurea coating.The results indicate that back face coating contributes towards an approximately 20%reduction in the residual deformation as well as the absence of melting of the Polyurea layer,while the front-face coating can be used a means of providing additional standoff distance to the steel plates. | Damith Mohotti P.L.N.Fernando Dakshitha Weerasinghe Alex Remennikov | 2021 | Defence Technology(防务技术)2021，17，6： | 2 |
| 2 | Adding sense to the Internet of Things显示文摘 | Tomás Sánchez López Damith C. Ranasinghe Mark Harrison Duncan McFarlane | 2012 | Personal and Ubiquitous Computing2012，，3： | 1 |
| 3 | Adding sense to the internet of things 显示文摘 | LOPEZ T S DAMITH C HARRISON M | 2012 | Personal and Ubiquitous Computing2012，，3： | 1 |
| 4 | Ballistic impact response of flexible and rigid UHMWPE textile composites:Experiments and simulations显示文摘This study elaborates on the effects of matrix rigidity on the high-velocity impact behaviour of UHMWPE textile composites using experimental and numerical methods.Textile composite samples were manufactured of a plain-weave fabric(comprising Spectra?1000 fibres)and four different matrix materials.High-velocity impact tests were conducted by launching a spherical steel projectile to strike on the prepared samples via a gas gun.The experimental results showed that the textile composites gradually changed from a membrane stretching mode to a plate bending mode as the matrix rigidity and thickness increased.The composites deformed in the membrane stretching mode had higher impact resistance and energy absorption capacity,and it was found that the average energy absorption per ply was much higher in this mode,although the number of broken yarns was smaller in the perforated samples.Moreover,the flexible matrix composites always had higher perforation resistance but larger deformation than the rigid matrix counterparts in the tested thickness and velocity range.A novel numerical modelling approach with enhanced computational efficiency was proposed to simulate textile composites in mesoscale resolution.The simulation results revealed that stress and strain development in the more rigid matrix composite was localised in the vicinity of the impact location,leading to larger local deformation and inferior perforation resistance. | Hongxu Wang Dakshitha Weerasinghe Paul J.Hazell Damith Mohotti Evgeny V.Morozov Juan P.Escobedo-Diaz | 2023 | Defence Technology(防务技术)2023，22，4： | 0 |
| 5 | 21世纪独一无二的无线电创新 构建可缩放的全球射频识别网络显示文摘近年来,无线通信、中间件以及互联网等技术的飞速发展推动了射频识别(RFID)技术的不断演进,射频识别技术已经成为“物联网(Internet of Things)”的一个不可或缺的组成部分。在未来的“物联网”环境中,我们日常生活中物理存在的物体是可识别的、可读的、可寻址的,甚至是可控制的,这种连接并融合物理世界和虚拟世界的能力不仅会改变我们的生活, | Damith C. Ranasinghe 王岳 | 2012 | 国外科技新书评介2012，，3： | 0 |
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