The human body consists of meat, bones, and water, the most strong part of the human body is bones that is 15% of total body mass. these bones play an important role in our daily activities, it helps to shape our body. Bones also act as a bodyguard, they protect body organs, the skull protects the brain and provide a shape to our face. The spinal cord is the transmission system of the human body protected by the backbone or spinal column. The Lungs are a major organ of the human body, they are responsible for the transportation of oxygen, protected by ribs, ribs also protect the heart. these bones are mainly responsible for the protection of the human body, movement, and shape.
The majority of us have faced the issue of broken bone at least once in life, but if someone is lucky enough and did not face such an issue than even just think how much stress his bones experienced.
Such discoveries of science always lead to improvement of human life, some scientists from the University of Case Western Reserve, Purdue University and Cornell University took inspiration from bone to create a more durable 3D printed structures. Ultimately, this would lead to making 3D printing capable fo high stakes applications like construction and aircraft design.
Neither 3D printed objects nor bones are solid that is the reason these are not too heavy. In 3D printing service, there are often used in projects of various infills to create structure stronger. while in bones, the spongy structure makes them stronger which called trabeculae. Columns and beams are responsible for bearing loads in both cases and distribute the load evenly. During the research, the team found that creating a modified version of the beam inside a human bone which was created with the help of 3D printing service could produce stronger objects that are more durable than the real one.
It came in observation during the study, what and how much impact the two Trabeculae structure had on strength of the bones. It was also observed during the study, Trabeculae consist of the vertical plate-like struts and horizontal rod-like structure that play its role as columns and beams. A young person has dense trabeculae but with the age passes this density reduced and this is the reason aged person faces broken bone issues often.
During the research, it was suspected that the vertical plates of the bone are much responsible for stiffness and strength, and responsibility of the durability is on the horizontal beams. To confirm this point, they developed a 3D printed object of trabeculae, the image of that model is below. It is proved by the experiment during the study, 3D printed Trabeculae had similar mechanical properties to the real bone and it can replace the real bone in case of any fracture. Once it is confirmed, then the team made a fully synthetic structure like human bone and adjusted the horizontal beam thickness. It observed that a 30% thicker beam could bear the double load that means the horizontal structure is mainly responsible for bearing load and main contributor to strength.
3D objects are lightweight once these are created and become fully solid, when the research team creates the horizontal supports thicker for the experiment, it was almost equal in weight and it did not significantly increase the weight of 3D printed objects. In such an experiment, it always took into account that the 3D printed object should not have extra weight then the real one or equal to it, it was also observed during this study that the 3D printed structures are durable and lightweight. This research helps us to understand better, how bones changed with age and it also potentially leading to a new treatment that reduces bone break.