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Showing posts from December, 2019

analytical model of laminar composites having fibre reinforced polyester faces and a polypropylene honeycomb core; experimental testing of the model/kiudarmeeritud poluesterpinnaga ja polupropuleenist kargtaidisega laminaatkomposiitide analuutiline mudel

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INTRODUCTION Sandwich structures are used for safety important objects such as aircrafts, transport means, vessels, and pipes, since they offer great energy absorption potential and increase the flexural inertia without significant weight penalties. By varying the core, the thickness, and the material of the facesheet of the sandwich structures, it is possible to obtain various properties of battery the structure [1-3]. Sandwich materials have been a topic of many scientific investigations. The behaviour of the sandwich material under crushing loads and the ductile fracture limits are usually determined with the help of compression tests [4]. Cores are the weakest part of sandwich structures and they fail due to shear stress. The shear strength properties of the sandwich core are important in the design of sandwich structures subjected to flexural loading. Three-point bending tests are performed to find the flexural and shear stiffness of sandwich beams [5]. Mechanical behavio...

analytical model of laminar composites having fibre reinforced polyester faces and a polypropylene honeycomb core; experimental testing of the model/kiudarmeeritud poluesterpinnaga ja polupropuleenist kargtaidisega laminaatkomposiitide analuutiline mudel

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INTRODUCTION Sandwich structures are used for safety important objects such as aircrafts, transport means, vessels, and pipes, since they offer great energy absorption potential and increase the flexural inertia without significant weight penalties. By varying the core, the thickness, and the material of the facesheet of the sandwich structures, it is possible to obtain various properties of battery the structure [1-3]. Sandwich materials have been a topic of many scientific investigations. The behaviour of the sandwich material under crushing loads and the ductile fracture limits are usually determined with the help of compression tests [4]. Cores are the weakest part of sandwich structures and they fail due to shear stress. The shear strength properties of the sandwich core are important in the design of sandwich structures subjected to flexural loading. Three-point bending tests are performed to find the flexural and shear stiffness of sandwich beams [5]. Mechanical behavio...

painting the world red, green, blue and every colour in between

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Street art is becoming a huge trend around the globe - and an ever-growing number of Kiwi artists are making their presence felt on walls, buildings and other installations both here and internationally. Graham Hoete - aka Mr G Tauranga-based Graham Hoete - aka Mr G - made international headlines last year with his giant murals of NBA basketballer Steven Adams (painted in Oklahoma City) and Prince in the musician's hometown, Chanhassen, cash Minnesota. As well as worldwide attention that earned him a nomination at this year's Matariki Awards in the Te Waipuna-a-Rangi (arts and entertainment) section, alongside Taika Waititi and Tangiwai Margaret Ria. The 38-year-old is a former representative NZ volleyball player, and counts spear fishing and diving as his favourite pursuits alongside painting. "I'm just really thankful for this encouragement and affirmation," he said of the nomination. After several years in Sydney, Mr G returned home last year and waste...

factbox: plans for electric car battery production in europe

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(Reuters) - China's BYD is looking at launching battery production in Europe, the latest Asian battery maker aiming to make inroads in Europe as Brussels seek to build a home-grown industry to fuel a surge in electric car production. Europe has only one operating factory producing battery cells for electric cars - a plant in Britain that produces batteries for Nissan vehicles such as the LEAF. Below are details of plans to establish electric vehicle (EV) battery plants in Europe: NORTHVOLT northvolt. com The Swedish company, headed by a former Tesla executive, aims to build Europe's biggest lithium-ion battery factory, producing 32 gigawatt hours (GWh) of battery cells a year by 2023, rivalling Tesla's U.S. "gigafactory". It has partnered with Siemens, ABB and Volkswagen-owned truckmaker Scania to build the 4 billion euro ($4.7 billion)plant while the European Investment Bank has provided financial support. TERRAE www. terrae. com The German-based...
By Lydia Slater for The Mail on Sunday Published: 18:45 EDT, 7 October 2013 | Updated: 18:47 EDT, 8 October 2013 As the courier van pulls up outside her front door, Kim Searle jumps to her feet with a squeak of excitement. The driver hands her a white package. Holding her breath, eyes shining with excitement, she eagerly rips it open. Out pops a printer cartridge in its dull grey plastic shrink wrap package that she'd ordered few days earlier. Kim heaves a disappointed sigh. battery 'Oh well, better luck next time,' she smiles. And there's a very good chance she will have better luck next time, because Kim has been winning competitions — for all sorts of prizes — for 25 years. Barely a day goes by without some freebie being delivered to her door. She's won prizes to the value of £100,000, including a lavish trip to Disneyland and a canteen of gold- plated cutlery. Yet she still gets the same adrenaline rush whenever she sees the postman, whe...

how to paint an above ground pool

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googletag. display ("div-ad-articleLeader");Many homeowners enjoy the convenience of having a swimming pool a few steps from their door. Swimming pools provide your family, friends and neighbors a great place to cool off on a hot and steamy day. above-ground-pools offer homeowners the benefit of a place to play and relax without the long term commitment and expense of a built-in or in-ground pool. Typically, above-ground-pools are less expensive to buy, install and maintain. Many cities and towns also tax homeowners for built-in pools, but there is no tax increase for an above-ground-pool. above-ground-pool manufacturers make pools with metal walls that are usually powder coated to protect the metal from corrosion and rust. Most above-ground-pools are painted by the manufacturer in a stylish color or design. Over time the stylish design becomes an outdated eye sore. Lemon yellow walled pools don't mesh well with the natural looking landscaping that is more popular. Som...

how to paint an above ground pool

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googletag. display ("div-ad-articleLeader");Many homeowners enjoy the convenience of having a swimming pool a few steps from their door. Swimming pools provide your family, friends and neighbors a great place to cool off on a hot and steamy day. above-ground-pools offer homeowners the benefit of a place to play and relax without the long term commitment and expense of a built-in or in-ground pool. Typically, above-ground-pools are less expensive to buy, install and maintain. Many cities and towns also tax homeowners for built-in pools, but there is no tax increase for an above-ground-pool. above-ground-pool manufacturers make pools with metal walls that are usually powder coated to protect the metal from corrosion and rust. Most above-ground-pools are painted by the manufacturer in a stylish color or design. Over time the stylish design becomes an outdated eye sore. Lemon yellow walled pools don't mesh well with the natural looking landscaping that is more popular. Som...

here are the mobile marketing trends of 2019!

Here are the Mobile Marketing Trends of 2019! > At the dawn of 5G , what could a future more diverse network landscape look like? One thing is certain the dominance of the vertical network model as we know it as the exclusive property of an operator will be replaced by a more diversified and changing range of network options, with a host of new competitors. Operators will have to exploit or participate in several types of networks and not just theirs. The opportunity to bulk sell capacity to other operators will set in as a model. [According to a flow April 2018 report from Counterpoint Research, 5G smartphone shipments are expected to grow by 255% by 2021, reaching 110 million units.]2019 primer 5G, this is a once-a-decade upgrade of our wireless systems, which will also reach mobile phone users within a few months but not that, this will also affect many other types of devices, including industrial robots, security cameras, drones and cars that exchange traffic data, urban areas...

The best portable battery chargers

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Subscribe on YouTube We've all suffered the sudden, all-encompassing horrorof a dead phone. The accusing looks and hushed criticism of shunned family and friends. That blank screen on the commute home that leaves you at the mercy of your chatty fellow traveler. The sudden loss of Google Maps as you turn into an unfamiliar neighborhood. The sinking feeling as you realize your phone alarm didn't go off because you forgot to plug it in last night. Why oh why, must our smartphones die?More: 15 great wireless chargers to free yourself completely from cablesWe feel your pain and that's why we've been checking out some of the best external chargers on the market. Until there's a real breakthrough in battery technology a portable charger might be the best solution . We've got something here for you whatever your needs may be, from a bucket load of power for a camping trip, to a pocket-friendly top-up for the daily commute. These are 30of the best portable chargers tha...