Mechanical Engineering

How disorder toughens materials

A team of Penn engineers tested disordered materials and finds that without changing the material but simply altering the internal geometry, the mechanical metamaterial can increase toughness.

Ian Scheffler

The bullet train turns 60

In both Asia and Europe, high-speed rail knits regions, countries, and continents together. What will it take to see more rail infrastructure in the U.S.?

Kristina García



In the News


Interesting Engineering

Engineers build 30-feet-long all-glass bridge using 6,000-year-old technique

Masoud Akbarzadeh of the Weitzman School of Design has created a 30-foot-long bridge built entirely of interlocking 16-millimeter hollow glass pieces.

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CNN

What officials are doing—and suggesting—to learn more about the possible drone sightings

Dean Vijay Kumar of the School of Engineering and Applied Science says that the main difficulties in detecting and tracking drones stem from their small size, agility, and potential for autonomous operation.

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CNN

Why you shouldn’t try to shoot down a suspected drone

Dean Vijay Kumar of the School of Engineering and Applied Science says that shooting at potential drones could lead to missed shots, stray bullets, or accidents that result in hazardous outcomes far beyond the intended action.

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Newsweek

What New Jersey’s mystery drones could actually be, according to experts

Dean Vijay Kumar of the School of Engineering and Applied believes that mystery drones in New Jersey are part a U.S. government operation rather than being sent by a foreign state actor.

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NBC News

Special mud rubbed on all MLB baseballs has unique, ‘magical’ properties, study finds

A study by Douglas Jerolmack of the School of Arts & Sciences and School of Engineering and Applied Science and colleagues has uncovered the mechanical properties of the mud used to coat Major League baseballs.

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The New York Times

The science that makes baseball mud ‘magical’

A study by Douglas Jerolmack of the School of Arts & Sciences and School of Engineering and Applied Science and colleagues has uncovered the mechanical properties of the mud used to coat Major League baseballs, with additional remarks from postdoc Shravan Pradeep and Paulo Arratia.

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