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Observing the Properties of Metamaterials with Sound Not Sight

Watch this video to learn more about the lab of Pinar Acara, in which undergrad researchers Sofia Cassara and Bumin Sansa have created a way to observe the properties of metamaterials with sound instead of sight. They can give materials metaproperties by optimizing their structure.

Topics:
Materials Test & Measurement

More From SAE Media Group

    Transcript

    00:00:00 so in my group we work on design of mechanical meta materials meta materials are materials with meta or extraordinary properties we can give materials these meta Properties by optimizing their structure in our project we are computationally designing meta materials as a picture and we are converting these pictures into music when we convert the material pictures into music changes in

    00:00:24 material structure become changes in note pitch our main goal is to hear similarities and differences in different meta materials in the image-based approach I broke the original image up into sub images so for each of these mini images I calculated the ratio of black pixels to Total pixels which I called density for the density in ranges of 10% I set a

    00:00:51 frequency and a color and then the program runs through each of the sub images picks out the frequency and the color and plays the song and plots the images of the original image and the color blocked image side by [Music] side in my Approach I use finite element analysis to obtain quantities for different mechanical properties such as

    00:01:23 displacement or stress in other words how the shape or The Meta material will the form under a load after these color map results are obtained I transform the color data into frequency and then convert this frequency into sound throughout the course of this project we understand how a met material sounds like