Cornell research teams have discovered how trivial parts of the bone's internal autonomy can be cemented to withstand repeated abrasion, a finding that could effectively treat osteoporosis patients. It will lead to the production of more tough and light materials used by the aerospace industry.
The paper of the project, "Bone-Inspired Microarchitectures Achieve Enhanced Fatigue Life," was made public in the National Academy of Sciences on November 18, 2019.
Scientists who study osteoporosis have been using X-ray scans for decades to examine the bone structure and distinguish strong and weak points. Density is the primary factor normally associated with bone strength, and also most researchers examine how much load a bone could withstand all at once while analyzing that strength.
A team headed, Christopher J. Hernandez, associate professor at the Sibley School of Mechanical and Aerospace Engineering and the Meinig School of Biomedical Engineering, has a keen interest in long-term fatigue life, or how much load a bone can endure before it breaks down.
"The easiest way to grasp the material's fatigue properties is to assume parts of a car, that breaks frequently and you have to take it to the repair shop. Okay, why has it broken? It was good enough, as it worked fine for years. "After tens of millions of cycles, it damages, "Hernandez said. "For 150 years, we have known about this property of materials. But not many people did this kind of research in bones.
Bone's internal architecture comprises of vertical plate-like struts which, when overburdened, assess its endurance. The bone also has lateral rod-like struts that have little impact on strength and are basically "window dressing." Hernandez along with his team suspected other architectural aspects were also important. By using the latest software, Ashley Torres M.A. 15, Ph.D.' 18, MBA ' 19, was able to conduct a more in-depth analysis of the bone sample and figured that lateral rod-like struts are critical to expanding the bone's fatigue life as it comes to resisting long-term structural damage.
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