This 3D Material Protects Buildings from Crashes!🏗️😱#shorts#engineering

A lightweight material that absorbs heavy impact — even a car crash at 60km/hr — could soon protect our buildings. Inspired by the cushioning in running shoes and memory foam pillows, Dr. Tatheer Zahra from QUT designed a 3D-printed auxetic geometry using bioplastic. Unlike normal materials, auxetic structures contract in all directions when compressed, absorbing energy efficiently without permanent damage.

This breakthrough design weighs just 180 grams but can withstand 25kN of force (about 2500kg) and absorb 260 joules of energy. These structures could be embedded in masonry or concrete walls to protect against impacts from cars, explosions, earthquakes, or strong winds. It’s a game-changer for buildings — especially commercial and residential areas vulnerable to accidental collisions.

Best of all, it uses locally available bioplastic, making it cheaper, sustainable, and more environmentally friendly than traditional fiber-reinforced materials or imported auxetic fabrics that cost up to $400 per square meter.

Now tested in labs, the next step is scaling this to real-world structures at the QUT Banyo Pilot Plant.

📸 Credit: Dr. Tatheer Zahra, QUT
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