Stephen Mraz

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.

Articles
Pack Expo International 2014 Rolls Into Chicago
Suppliers and vendors will show off their best packaging equipment while attendees stay up to date on the latest technologies and techniques in the packaging industry.
NASA Taps Two Companies for Spacecraft to Take Crews to the Space Station
Two U.S. companies will build spacecraft capable of resupplying the space station with crew and cargo.
Navy Develops Tougher, See-Through Ceramic Armor
Engineers at the Naval Research Laboratory (NRL) have used nanotechnology to increase the toughness of the transparent spinel armor it currently uses on optics, sensors, and windows on ships and other vehicles.
Smokestack Simulator Will Help Uncover How to Accurately Measure Emissions
Operators of U.S. coal-fired power plants can only get figures for the amount of carbon dioxide coming out of their smokestacks that are accurate to within 10 to 20%.
Company To Build Reactor and Supply Medical Industry with Moly 99
Eden Radioisotopes LLC plans on building a new type of reactor that will be able to supply enough molybdenum-99 (molly 99) to meet the medical needs of the entire world. Molly 99, with a 66-hr half-life, decays into technetium-99m, which has a 6-hr half-life.
Students Test-Fire Rocket Engine Component They Built for NASA
Engineering students at Purdue University recently test fired a thrust chamber they designed and built as part of NASA’s Project Morpheus.
3D Printing and Silicone Ink Lead to Energy-Absorbing Parts
Researchers at Livermore National Laboratory have developed a silicone-based “ink” that can be used in 3D printers to make cushions and pads. The energy-absorbing parts can have different levels of softness determined by how the 3D printer deposits the ink...
A Disposal for Fluorescent Lights
The Bulb Eater 3 lamp crusher from Aircycle Corp., Lisle, Ill., can safely dispose of straight fluorescent lamps of any length, as well as U-shaped bulbs and CFLs (with optional chute attachment), reducing them to little more than dust.
Adaptable Pushbutton Switch Carries IP65 Rating
The KF Series of sealed rocker switches from Cherry Electrical Products, Pleasant Prairie, Wis., resists dust and water and can be configured to meet a variety of different needs.
Wanna Buy A Bridge?
When a major section of the Bay Bridge in San Francisco collapsed during the 1989 Loma Preita earthquake, officials at the California Dept. of Transportation (Caltrans) leapt into action to replace the span.
3D-Printed Monster Invades Comic-Con 2014
A team of engineers and designers, including 3D printing experts from Stratasys Ltd., Eden Prairie, Minn., put their heads together to concoct an eye-popping attraction for the 2014 Comic-Con International show in San Diego.
First Direct-Diode Laser Slices Through Metal 1
Start-up company TeraDiode, Wilmington, Mass., has taken technology developed in MIT’s Lincoln Laboratory to develop the first metal-cutting machine that uses only laser diodes–there are no intervening crystals for amplification or focus.
Technology Adds the Sense of Touch to Prosthetic Hands
Biomedical researchers at the Veterans Administration are exploring options and developing techniques for directly stimulating nerves to let prosthetic users feel sensations in their artificial hands.
Low-Cost Sensor Accurately Tracks Cylinder Position
Magnetostrictive sensors that use line-of-flight technology to determine a cylinder’s position are not especially rugged, and resistive potentiometers often lack the necessary resolution or operational life.
What’s the Difference Between Abduction and Adduction (Biomechanics) 1
In medicine and biomechanics, movements of limbs and other body parts toward or away from the center line of the body (a line that runs up and down the center of the human body) are termed adduction and abduction, respectively.
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