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. For 13 years, Elisabeth has worked as a technical writer — 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 Google+ and Twitter.

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.
Baggage-scanning system minimizes lost luggage — with PC-based control
Lost luggage is annoying to travelers and incurs significant expense for airlines. One new system employs a panel PC, camera, lighting, conveyor belts, and encoder feedback to scan bags for more-reliable sorting.
The changing face of U.S. manufacturing: Industry leaders talk 1
This report on U.S. Manufacturing outlines its current state and continued success. To get a better handle on the situation, we asked four industry leaders working in the trenches about current market conditions.
Online Learning Library 1
Now you can download all of the Brushing Up TeCHapters for your enjoyment and enrichment — without having to register! Topics cover physics and engineering foundations.
Vibrations in designs incorporating gears: Sources, analysis, and solutions
All moving machinery generates vibration—which in turn wastes energy, degrades movement accuracy, and leads to system failure

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