Elisabeth Eitel

Elisabeth Eitel is Senior Editor of Machine Design magazine. She has a B.S. in Mechanical Engineering from Fenn College at Cleveland State University. Over the last decade, Elisabeth has worked as a technical writer — most recently as Chief Editor of Motion System Design magazine.

Her blog is Product Design Engineering — existing and emerging technologies immediately applicable to product design, as well as industry trends that promise to change engineering.

Follow her on Twitter at twitter.com/EitelonDesign.

Articles by Elisabeth Eitel
Solution to Fun with Fundamentals Puzzler: Shell Shocker
If the slug shooter is based on conventional railgun design, how far can he reach with each shot? Let's find out.
Solution to Fun with Fundamentals Puzzler: A Stupid Dream
How high must Thrasher start from to be able to make it safely around the loop without falling off due to gravity? Let's find out.
Fun with Fundamentals Puzzler: A Stupid Dream
Assume there’s no friction on the track and kitty has perfect balance. From how high must Thrasher the Cat start to make it safely around the loop without falling off due to gravity?
Try your hand at these physics puzzlers
Try your hand at these reader-submitted puzzlers tailored to engineers. You may just remember a thing or two from all that physics and calculus tucked away in the recesses of your brain.
Basics of flexible bellows couplings 2
Bellows couplings transmit power from 0.5 to more than 100,000 Nm at speeds from 0 to 100,000 rpm. They offer distinct advantages, but replacing other coupling types with them requires solid understanding of their operation.
The benefits of gearboxes — and when to pick integrated gearmotors
Only about one-third of motion-control systems use gearing, even though gearheads benefit size-constrained applications.
Standardized gears and motors keep agricultural conveyors moving
Conveyors on machines called pilers use motors with planetary gearheads plus other mechanical design features to boost reliability and standardize one beet-sugar company’s drives
Comparing 1D barcode readers to 2D barcode imagers
Barcode imagers (also known as digital or area imagers) read both 1D and 2D barcodes using sensors that have rows of cells. They’re proliferating with 2D barcodes that embed more information than traditional 1D barcodes
Sensors and belt improve wind-tunnel accuracy
An array of sensors and a steel treadmill create and record wind-tunnel conditions that more accurately model complex driving situations.
U.S. infrastructure is not a money-maker
In 2010, John Fisher lost his wife while driving along Alabama’s weathered Interstate 20. Concrete kicked up by another car flipped through Fisher’s windshield. Is this the new normal for U.S. infrastructure?
Ensuring quality control at America’s largest steel mill
Replacing digital linear encoders with magnetostrictive sensors reduces downtime and guarantees on-spec steel products.
The future of additive manufacturing
Additive manufacturing proliferated years ago because of its usefulness in building prototypes. Since then, companies, government agencies, and even lay tinkerers have increasingly used the techniques to make production parts.
Machine vision boosts productivity on bottling line
Machine vision in larger automated systems improves productivity, increases throughput, and eliminates human error in myriad global industries.
The rise of Robot Operating System (ROS) software
Open-source software is giving rise to emerging breeds of quasi-commercial, prosthetic, and industrial robots. Robot Operating System (ROS) software — a suite of software libraries that help developers create robot applications — is fast becoming the dominant information-exchange code in both research and industrial robots.
VFDs: Boosting efficiency in hoisting applications 1
Improving the energy efficiency of industrial applications is top of mind for today’s design engineers. Variable-frequency drives (VFDs) can make a difference by regenerating power that would otherwise be lost as heat in hoisting and other motion-control scenarios.
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