Stephen Mraz

Senior Editor,
Machine Design

Steve serves as Senior Editor of Machine Design.  He has 23 years of service and has a B.S. Biomedical Engineering from Steve was a Flight officer in the U.S. Navy. He is currently responsible for areas such as aerospace and medical.

Microneedles Accurately Deliver Drugs to the Eye
Biomedical researchers at the Georgia Institute of Technology have devised two new applications for using microneedles 400 to 700 microns long to help fight eye diseases.
A Travel Case that Can Take Abuse
Rugged, durable cases from Pelican Products Inc. are rotationally molded from polyethylene, a process that puts more material at the corners and edges where it is needed most for protection during impacts.
Dual-Shielded Flat Cables Protect against EMI
Engineers at Cicoil encased dual-shielded conducting pairs inside a flat cable housing for better protection against EMI/RF than that provided by shielded round cables and other types of flat shielded cables.
Legendary Corvettes Throughout the Years
A look at some of the most legendary Corvettes throughout history.
The LT4: Another Legendary Corvette Engine 10
Chevy and GM engineers have developed and manufactured their most powerful production engine ever. Here’s a look inside the LT4 engine and some of its subsystems.
Hybridized 3D-Printed Part Combines Plastic and Metal
When a client quickly needed a working prototype of a rifle magazine, the designers and technicians at Baklund R&D knew they would have to use hybridized 3D printing.
“Oops, I Dropped the Warhead!” (On Purpose)
The Defense Dept. drop tested its latest nuclear warhead, the W88 ALT 370, the follow-up to the W88.
3D Printed Inverter Could Kickstart Electric Cars 1
Engineers at Oak Ridge National Laboratory have combined 3D printing and a wide-bandgap version of silicon carbide to come up with a lightweight, compact 30-kW traction-drive inverter.
Fighting Friction with a Nanolayer of Graphene
Researchers at the Argonne National Laboratory have developed a method of bonding a uniform layer of graphene only one atom-thick directly to steel.
Adaptive Optics Lets Soldiers Zoom in on Targets
The scope, called the “rapid adaptive zoom for assault rifles” (Razar), lets soldiers shift magnification without taking their hands off the rifle or eyes off the target, a problem with the current scope.
Oil-Shear Clutch-Brake Lets Lacrosse Stick Swing Realistically
Shear-oil clutch brake lets lacrosse stick swing realistically.
Powering Implants with Ultrasound
Powering wireless implants with ultrasound
Roboticists and Biologists Learn from Sidewinder Rattlesnakes
Sidewinders teach biologists and roboticists a thing or two.
Researchers Develop World’s Thinnest Generator
Introducing the world’s thinnest electric generator.
85 Years Ago: Machine Design’s First Year: Part 1 2
John F. Hardecker, the chief draftsman of the U.S. naval aircraft factory, begins a six-part series outlining how to run a ship-shape design team. He finishes the article with some words on standardization: “In conclusion, while standardization has its faults and pitfalls, these best can be avoided by keeping constantly in mind the true meaning of standardization.
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