The Virtual Copy of the Real World
Imagine if you had a twin. Not just any twin, but a digital one—a perfect copy of yourself inside a computer! This twin looks like you, acts like you, and even learns from everything you do. Sounds like something out of a sci-fi movie, right? Well, in the world of technology, this idea is very real, it’s happening already right here in Tasmania and it’s called a digital twin.
What is a Digital Twin?
A digital twin is a virtual version of something that exists in the real world. It could be a car, a building, a bridge, or even a whole city! Scientists, engineers, and businesses create digital twins to test things in a safe, computer-generated environment before making changes in real life.
Think of it like a video game where you build a city and see how different choices affect it. But instead of just playing for fun, experts use digital twins to solve real-world problems.
If you have ever renovated a house that you didn’t build, imagine how much easier a digital twin of every cable, stud in the wall, or plumbing could help you know what’s behind a wall, and if planning a renovation, you could use the digital twin to simulate things like more efficient natural cooling based on times of the year, or how hot the deck might get in Summer. This allows you to make more informed choices.
How Do Digital Twins Work?
A digital twin is created by collecting lots of data from the real thing. This data comes from sensors—tiny devices that measure things like temperature, speed, movement, and even air quality.
Your smart watch and smart phone for example, tracks information constantly about your health and performance. As you age or get fitter (or less fit), it will change its predictions on your performance. Some watches may even send you a warning about abnormal heart rates, or
In a bigger example of engineering design, imagine a digital twin of an airplane. Sensors on the real airplane send information to the digital twin, which then updates in real-time. Engineers can see how the plane is performing, spot any issues, and even predict problems before they happen. This helps keep airplanes safe and running smoothly.
A the 2024 TMEC Annual Conference, Maree from the Australian Corrosion Association, shared how a digital twin of a bridge can improve the efficiency of maintenance by scanning all the sides of a bridge with drones (much easier than having humans climb under a bridge to visually inspect it), looking at where corrosion and degradation may be forming, and then over time, seeing how the rust or concrete damage is advancing. It can then use the digital twin (with other data points from traffic schedules, original plans etc) to predict a much more efficient maintenance schedule. The Sydney Harbour Bridge is an example that is rusting, and needs constant maintenance well beyond just painting over the surface. Corrosion can be compared to cancer; when it gets a foothold, it runs rampant.A steel bridge can last forever if you stop it from rusting, but a rusting bridge will eventually crumble.