3 ms·

See FIG. 1. Hierarchical microstructure of the cuticle of the lobster (Homarus americanus; based on existing studies) from the paper: https://www.liebertpub.co

• PEJOE 6y ago
  > Further, rotating layers to change the bulk performance of materials composed of anisotropic plies is very old technology developed originally for aerospace / racing applications. > Ansys has an entire package devoted to the analysis of structures made from anisotropic materials in this way. Also, if you read your link paper, they are not doing anything different that what has been known for a long time in long-fiber composites - see: https://www.liebertpub.com/cms/10.1089/3dp.2020.0172/asset/images/medium/3dp.2020.0172_figure2.jpg https://www.liebertpub.com/cms/10.1089/3dp.2020.0172/asset/i...
  • sradman 6y ago
    > they are not doing anything different that what has been known for a long time in long-fiber composites They are using a new material (concrete) and in-situ fabrication technique (extrusion/printing) that is at an early stage of development and doesn't seem to be performing well. I'm assuming that the type of empirical data produced by these experiments is a prerequisite to developing a finite element model for these materials/techniques. The worst case here is that civil engineers have to reinvent the knowledge that you believe other engineering disciplines have mastered using different materials. Computer guided in-situ reinforced concrete seems quite novel to me; perhaps that is a reflection of my own knowledge gap.