3D printing is pretty easy to explain — normal printers work in 2D (length and width) while a 3D printer also handles height. To add height in any real sense you can’t just lay down more ink, you need an additive process that can actually build something, like meat or a gun. So when MIT’s Visit link: 4D printing: The extra D is for self-assembleD
Training those who will work with or maintain complex customized equipment (think military aircraft or large construction equipment) often means turning them loose on the real thing.
Once again the venerable The Economist has published a series of articles on the topic of 3D printing and digital manufacturing. This publication has gone quite far to promote the technology, more than others.
The crash-test dummy is a high-tech testing device with a large number of physical and electronic permutations to satisfy the unique needs of each customer. Each industry such as automotive, aerospace, airline or defense, all have different requirements for their crash test dummies