Nowadays,automobiles become an absolutely necessary part of people’s life,according to statistics,the number of worldwide automobile in use has reached 68.56miilion and over 65 million units were produced in 2015,this number also shows an increasing trend in the future.On average,an automobile is made by 47% steel, 8% iron, 8% plastic, 7% aluminum, and 3% glass.Other materials account for the remaining 27%. As the amount of auto production is large ,the material loss and emission of carbon dioxide during manufacture are unavoidable to be alarming.In addition,the end life vehicles are recycled incompletely,some wastes may be produced during dismantling or dis-assembly.
Figure 1.1 worldwide car in use 
In the traditional way,a car is assembled from different parts with particular moulds,these moulds cause a die cost and a long period to achieve manufacture.From planning and build a prototype on a mule to putting it into the market,a typical Toyota car always takes about 18 months and once the car is in the market, it’s hard to change and improve due to an extra cost for a new mould. All of these limits the speed of automobile development. However,people is keen to make a progress in the auto field ,for example, new energy automobile becomes one of the most significant progress in recent years.
With the growth of 3D technology,3D printing is faster and more distinctive,combine it with a vehicle is an innovative application.Actually,3D printing can not only print certain parts of a car ,but also an entire vehicle,in the world, lots of countries have already created 3D printed car,and tried to sale it in the next few years. This report analysis the Sustainab...
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...echnology,they can also work in the other field related to the 3D printing.
As for the economic problems,the company who wants to launch 3D-printed auto can have a cooperate with an university.The University can provide their talent student and the latest research and development of 3D technology,at the same time,they can own some shares of the product.That means the investment for R&D of 3D printer can be paid after sale the product,it can help the company to turnover the capital.
”Rome was not built in a day”.3D-printed car need a process to mixture mature traditional car industry and developing 3D technology,the cost of time and money are necessary,but as the people pay more attention to the sustainable development, the 3D printed car is a worldwide trend,and this industry is full of opportunities,recent years ,diverse 3D printed car has been made successfully.
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