Scientists at Cornell University, Purdue University and Case Western Reserve University have created a new 3D printed material whose design is inspired by human bones. The research team says that bones and 3D printed buildings have some things in common. They all have columns and beams inside, and determine their service life.
The research team said that by simulating how human bones handle life-long wear, they can come up with 3D printed lightweight materials. The life of this material is long enough to be used more practically in buildings, aircraft and other structures. The research team found that by simulating human bone-related mechanisms, the life of man-made materials may be extended by a factor of 100.
Scientists say that the bone is a building, and its columns carry most of the load, and beams are used to connect these columns. The durability of bone comes from the spongy structure called trabeculae. This is a network of vertical plate-shaped support rods and horizontal rod-shaped support rods connected to each other, which act as cylinders and beams. The denser the trabeculae, the more elastic the bones in daily activities.
The research team found that in the bones, seemingly insignificant horizontal pillars increase the fatigue life of the bones. The research team determined that the role of horizontal pillars in human bones may be more important than previously thought, so they designed a 3D printed polymer with a trabecular structure that can make 3D printed buildings stronger. Tests have shown that applying a load to this 3D printed polymer confirms that the thicker the horizontal strut, the longer the polymer will bear the load. The thicker pillars did not significantly increase the mass of the polymer, which led the research team to believe that this design would help make lighter and more elastic materials. ,
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