| Nature is often the best answer when looking for ways to strengthen materials. It is learned from foreign media that Purdue researchers are inspired by the shrimps, who use 3D printing technology to develop new super materials inspired by rainbow prawn. In a recent study, researchers collaborated with the University of California, Riverside to further develop a new class of super tough materials.  What makes the prawn stand out? It can actually beat or even smash its armored prey (mainly mollusks and other crabs), their damage resistance and excellent mechanical properties are also well known. Stunning marine life in the fist It has incredible power behind and can be as fast as a 22-caliber bullet.  The new research results show that fibers are found in many marine crustacean shells and insect exoskeletons, arranged in a spiral structure like a spiral staircase. 'This mechanism has never been studied in detail before,' Zavattieri said. 'We found that as the crack develops, the driving force for crack propagation gradually decreases, promoting the formation of other similar mechanisms, thereby preventing the material from suddenly collapsing. I think We can finally explain why the material is so tough. 'In terms of experiments, we use existing materials to create composites that validate this theory.' Nobphadon Suksangpanya, Ph.D. student at Purdue University; Nicholas A. Yaraghi, Ph.D. student at the University of California, Riverside; David Kisailus, Professor of Chemical and Environmental Engineering and Materials Science and Engineering, University of California, Riverside; Zavattieri, in the Journal of Biomedical Materials Mechanics Behavior and The 'International Journal of Solid and Structure' magazine published two papers on their wonderful works.  Previous studies have found that the spiral structure is designed to withstand repeated high-speed shocks. When cracks form, they follow a twisted pattern rather than directly propagating through the structure, causing failure. UC Riverside's electron microscope shot The new image shows that instead of a single crack continuing to propagate, it forms many smaller cracks - dissipating the energy absorbed by the material during impact. The researchers created and tested this 3D printed composite, using cameras and digital image correlation techniques to capture cracks. Behavior, to study the deformation of materials.  Zavattieri said: 'We are building new mechanisms that composites did not have before. Traditionally, when we produce composites, we put the fibers together, but not the best, and nature is teaching us how to do it. ' These findings can help develop lighter, stronger and tougher materials for many applications including aerospace, automotive and sports. |
