Skip to Content
Uncategorized

Sense of Strain

Magnetic resonance imaging reveals unusual strain in a human body. Now a related physical effect, called nuclear quadrupole resonance, may help check for strain in the composite materials that are becoming common in everything from bridges to airplanes. The method, being developed by San Diego-based Quantum Magnetics, requires an undisclosed additive to be mixed into the composite as it is being formed. When this substance is hit by radio waves, it emits a different frequency; the magnitude of the shift indicates the strain in the material.

In one potential application, radio devices could be permanently affixed to various points on a structure to check the strain continually. Alternatively, a mobile unit could check for strain at particular points during routine maintenance. A commercial strain-monitoring system is about two years off, says researcher Stephanie Vierkotter.

Keep Reading

Most Popular

Geoffrey Hinton tells us why he’s now scared of the tech he helped build

“I have suddenly switched my views on whether these things are going to be more intelligent than us.”

ChatGPT is going to change education, not destroy it

The narrative around cheating students doesn’t tell the whole story. Meet the teachers who think generative AI could actually make learning better.

Meet the people who use Notion to plan their whole lives

The workplace tool’s appeal extends far beyond organizing work projects. Many users find it’s just as useful for managing their free time.

Learning to code isn’t enough

Historically, learn-to-code efforts have provided opportunities for the few, but new efforts are aiming to be inclusive.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.