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From Fibers to Finished Composite Components (english)
Gelcoats are special resins that are designed to form the first surface of a composite mould or part. Gelcoats are generally applied as a thickness of 0.3-0.7mm and are specially formulated to provide the part or mould surface with properties such as resistance to UV (ultraviolet) degradation, hydrolysis or osmosis (where water is absorbed into a composite over considerable time). Gelcoats also include thixotropic additives to make them thicker and more able to stick to inclined surfaces of moulds. Epoxy gelcoats are based on epoxide resin and polyamine hardener (just like epoxy resin) and should be used when making parts using epoxy resin , if a gelcoat surface is required. Gelcoats are applied to a mould surface and allowed to cure to a certain point before the first layer of laminate is applied. Epoxy Gel Coat - Easy Composites
How to Make a Carbon Fiber Car Bonnet/Hood - Part 2/3
A bright idea to help bike riders be seen and not harmed Inventors: bike helmet of the future? A researcher at RMIT University hopes he's invented the bicycle helmet of the future. WOUTER Walmink never considered wearing a bicycle helmet until he moved to Melbourne a year ago. But after pedalling through the city's hectic streets, the Dutch designer realised he was going to need a helmet - so he set about making a better one. The result is the LumaHelm, a flashing headpiece with 104 multicoloured LED lights that illuminate like indicators when a cyclist tilts the head left or right.
Singapore scientists create world's smallest gear | Video
Confirmed by ETH Zurich study: nuclear energy phase-out is possible Restructuring the energy system without nuclear power by 2050 is in principle technologically possible and economically manageable. However, it will demand a concerted effort by the whole of society.
How to make a beta cell divide An ETH Zurich research team-in collaboration with Roche Pharmaceuticals- has discovered a hitherto unknown mechanism by which the insulin producing beta cells are negatively affected.
1, aircraft radial engine
Huge Electromagnet and balls
Tesla's Earthquake Machine
By the time you finish reading this article, you will undoubtedly think of Theo Gray when you hear someone say "mad scientist."