The Experts below are selected from a list of 2211 Experts worldwide ranked by ideXlab platform
Bourke Stephen - One of the best experts on this subject based on the ideXlab platform.
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The resilient urban city: a new image of the city
School of Architecture University of Limerick, 2015Co-Authors: Bourke StephenAbstract:For most the heart of the city of Chicago is the loop district, the central business district where by all the different city transit lines meet in a loop fifteen foot above one’s head. For me it is a place much more detached from, yet completely surrounded by the city, the confluence, the point at which the three branches of the river meet. With my back against the ten to fifteen foot corrugated steel river wall, bobbing gently in my kayak, the essence of an extraordinarily vibrant city can be felt. From here, the three branches of the river meet like an upside down letter Y placed out in front of you and flattened. Behind me I can hear the great Metra on its final approach into the city’s ‘Union Station’ as it completes its journey from the far outer reaches of the greater Chicago area. On my right, the bare Aluminium Skin of the red-line, transit train is glistening in the sun as it crosses the ‘Lake Street Bridge’ over the southern branch of the river. From that bridge panning left toward the direction of the bow of my kayak is the main stem of this great river. Throughout the day a parade of endless water taxis, tour boats and recreational boats, head towards this confluence of river branches and either go south, under ‘Lake Street’ bridge to my right, or north towards my left under what Chicagoans would call ‘Viagra’ bridge, the name being a touch of humour towards its current state in a permanent upright position. Its monumental state is paying tribute toward the industrial age of Chicago where the train was of vital importance to its prosperity, the bridge being the last physical piece of evidence of a past infrastructure. All of this added to the sound of cars in rush hour traffic is a vibrancy of transport infrastructure any city would thrive upon. Although, completely forgetting the canyons of glass and steel towering left and right of the river, adding a whole other layer of fabric to a feeling of wonder and awe just bobbing in the water
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The resilient urban city: a new image of the city
School of Architecture University of Limerick, 2015Co-Authors: Bourke StephenAbstract:peer-reviewedFor most the heart of the city of Chicago is the loop district, the central business district where by all the different city transit lines meet in a loop fifteen foot above one’s head. For me it is a place much more detached from, yet completely surrounded by the city, the confluence, the point at which the three branches of the river meet. With my back against the ten to fifteen foot corrugated steel river wall, bobbing gently in my kayak, the essence of an extraordinarily vibrant city can be felt. From here, the three branches of the river meet like an upside down letter Y placed out in front of you and flattened. Behind me I can hear the great Metra on its final approach into the city’s ‘Union Station’ as it completes its journey from the far outer reaches of the greater Chicago area. On my right, the bare Aluminium Skin of the red-line, transit train is glistening in the sun as it crosses the ‘Lake Street Bridge’ over the southern branch of the river. From that bridge panning left toward the direction of the bow of my kayak is the main stem of this great river. Throughout the day a parade of endless water taxis, tour boats and recreational boats, head towards this confluence of river branches and either go south, under ‘Lake Street’ bridge to my right, or north towards my left under what Chicagoans would call ‘Viagra’ bridge, the name being a touch of humour towards its current state in a permanent upright position. Its monumental state is paying tribute toward the industrial age of Chicago where the train was of vital importance to its prosperity, the bridge being the last physical piece of evidence of a past infrastructure. All of this added to the sound of cars in rush hour traffic is a vibrancy of transport infrastructure any city would thrive upon. Although, completely forgetting the canyons of glass and steel towering left and right of the river, adding a whole other layer of fabric to a feeling of wonder and awe just bobbing in the water
S, Arockia Reemas - One of the best experts on this subject based on the ideXlab platform.
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Mechanical Characterization of Expanded Polystyrene Spheres Embed Sandwich Composites for Packaging Applications
RIT Scholar Works, 2018Co-Authors: R Maheswaran, S, Arockia ReemasAbstract:This paper addresses on study of development of new packaging material comprising Expanded Polystyrene Spheres (EPS) embedded epoxy polymer based sandwich composites with Aluminium Skin. The density of the packing material is controlled by varying the volume of embedded spheres. In this study, the Flexural and Compression performance of Expanded Polystyrene Spheres (EPS) embedded polymer based sandwich composites with Aluminium Skin are investigated. The EPS volume percent in the core is 25% with epoxy matrix which makes the the density less than 1 g/cm3 for the composite. The fabricated Sandwich Composite are very light weight, the density is less than 1 g/cm3 so it can able to float in water. Here for the same volume fraction of 25%. EPS are arranged in square pattern and hexagonal pattern in the sandwich composites. The compression strength and flexural strength for the two type of pattern arrangements were studied in experimental method
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Effect of EPS volume fraction in buoyancy characteristics of expanded polystyrene/epoxy sandwich composites
International Journal of Materials Engineering Innovation, 2017Co-Authors: S, Arockia Reemas, R MaheswaranAbstract:In this study, the buoyancy characteristics of an expanded polystyrene spheres (EPS) embedded epoxy polymer based sandwich composites with Aluminium Skin are investigated. Composite which float at the pycnocline layers formulated by three fluids namely refined Helianthus annuus (sunflower) oil, brine solution and water are determined. Four composite samples EPS-22, EPS-29, EPS-36 and EPS-43 vol.% of EPS in the epoxy resin matrix core are fabricated by hand lay-up process. It is observed that the density of the composite is decreasing with increasing EPS volume fractions and the buoyant force acting on the samples at pycnocline layers are increased due to the density gradient. Results show that the sandwich composites with greater than EPS-36 and EPS-43 vol.% float in sunflower oil and composites having EPS-29 vol.% floats at the sunflower oil/fresh water pycnocline layer. Further, it is observed that composite with EPS-22 vol.% floats at the fresh/brine water pycnocline layer.
R Maheswaran - One of the best experts on this subject based on the ideXlab platform.
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Mechanical Characterization of Expanded Polystyrene Spheres Embed Sandwich Composites for Packaging Applications
RIT Scholar Works, 2018Co-Authors: R Maheswaran, S, Arockia ReemasAbstract:This paper addresses on study of development of new packaging material comprising Expanded Polystyrene Spheres (EPS) embedded epoxy polymer based sandwich composites with Aluminium Skin. The density of the packing material is controlled by varying the volume of embedded spheres. In this study, the Flexural and Compression performance of Expanded Polystyrene Spheres (EPS) embedded polymer based sandwich composites with Aluminium Skin are investigated. The EPS volume percent in the core is 25% with epoxy matrix which makes the the density less than 1 g/cm3 for the composite. The fabricated Sandwich Composite are very light weight, the density is less than 1 g/cm3 so it can able to float in water. Here for the same volume fraction of 25%. EPS are arranged in square pattern and hexagonal pattern in the sandwich composites. The compression strength and flexural strength for the two type of pattern arrangements were studied in experimental method
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Effect of EPS volume fraction in buoyancy characteristics of expanded polystyrene/epoxy sandwich composites
International Journal of Materials Engineering Innovation, 2017Co-Authors: S, Arockia Reemas, R MaheswaranAbstract:In this study, the buoyancy characteristics of an expanded polystyrene spheres (EPS) embedded epoxy polymer based sandwich composites with Aluminium Skin are investigated. Composite which float at the pycnocline layers formulated by three fluids namely refined Helianthus annuus (sunflower) oil, brine solution and water are determined. Four composite samples EPS-22, EPS-29, EPS-36 and EPS-43 vol.% of EPS in the epoxy resin matrix core are fabricated by hand lay-up process. It is observed that the density of the composite is decreasing with increasing EPS volume fractions and the buoyant force acting on the samples at pycnocline layers are increased due to the density gradient. Results show that the sandwich composites with greater than EPS-36 and EPS-43 vol.% float in sunflower oil and composites having EPS-29 vol.% floats at the sunflower oil/fresh water pycnocline layer. Further, it is observed that composite with EPS-22 vol.% floats at the fresh/brine water pycnocline layer.
Stefan Hiermaier - One of the best experts on this subject based on the ideXlab platform.
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Improved sustainable sandwich panels based on bottle caps core
Composites Part B: Engineering, 2020Co-Authors: Pablo Resende Oliveira, Michael May, Túlio Hallak Panzera, Fabrizio Scarpa, Stefan HiermaierAbstract:Abstract A sandwich panel based on upcycled bottle caps core and sustainable components is investigated to contribute to advances in lightweight and environmentally friendly structural solutions. Ecological alternatives to the panel Skin and adhesive, such as a recycled PET-bottle foil and a castor oil bio-polyurethane, respectively, are tested and compared to commercial components (Aluminium Skin and epoxy polymer). Bottle caps are characterised using a small punch test specially developed to obtain the properties of the bottle caps. Additionally, low-cost reinforcement (Portland cement) is added to adhesives to enhance the mechanical behaviour of the panel. The sustainable panels achieve enhanced efficiency compared to Aluminium-based panels for core shear strength and stiffness, besides having similar specific flexural properties compared to those of epoxy-based PET panels. Despite their higher strength and stiffness, epoxy polymer-based panels show visible adhesive peeling off to bottle caps core and Aluminium Skin. In contrast, the biopolymer exhibits larger deformation and debonding of both substrates, indicating a progressive and ductile failure. The satisfactory efficiency of sustainable panels confirms the promising reuse of recycled bottle caps in structural applications.
J J Jiang - One of the best experts on this subject based on the ideXlab platform.
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experimental study on fatigue failure and damage of sandwich structure with pmi foam core
Fatigue & Fracture of Engineering Materials & Structures, 2015Co-Authors: Fengpeng Yang, Q Y Lin, J J JiangAbstract:Sandwich structures consisting of Aluminium Skin sheets and polymethacrylimide foam core have been gradually used in the high-speed trains. The static mechanical properties and fatigue damage of the sandwich structures with polymethacrylimide foam core were experimented in three-point bending and were discussed. The failure mode is identified as local indentation. The static strength was obtained, and it showed good consistency with the forecasting formula. The fatigue property and damage evolution were also researched under cyclic loading. The fatigue life curve and the fitting formula were submitted. The fatigue damage evolution started from the Skin sheet fracture and then the foam core indentation. The displacement at the midpoint as the damage parameter was discussed, and the evolution prediction formula was submitted, which showed great agreement with the experimental results.