What’s the Difference Between Polypropylene Types?
WEBOct 2, 2018 · Paul Martin1. Polypropylene (PP) is a rigid crystalline thermoplastic used in everyday objects. There are various types of PP available: homopolymer, copolymer, impact, etc. Its mechanical ...
How to Choose the Right Control Method for VFDs | Machine Design
WEBOct 23, 2014 · Variable frequency drives come in all sizes, as these two VFDs from Yaskawa America Inc. demonstrate. Both are in the companyâ s A1000 Series of drives and are powered by three-phase 380 to 480 V.
What’s the Difference Between the Sagittal, Coronal, and …
WEBFeb 2, 2015 · The sagittal or lateral plane dives the body into left and right halves and is an x-z plane. Technically, the sagittal or median plane goes right through the middle between the body’s left and ...
Basics of Aerospace Materials: Aluminum and Composites
WEBJun 19, 2014 · Two materials play major roles in modern aerospace: aluminum alloys for airframes and skin, and composites for structures. Here’s a look at both.
What’s the Difference between AC, DC, and EC Motors?
WEBAug 24, 2017 · Consequently, AC motors are less efficient than DC motors. In fact, the DC motor is 30% more efficient than AC motors due to the secondary magnetic field being generated from the permanent magnets ...
Cast Iron and Wrought Iron: What’s the Difference?
WEBJan 9, 2023 · Wrought iron is softer and more ductile than cast iron. It is also highly malleable and can be heated, re-heated and worked into various shapes. In fact, it gets stronger the more it is worked ...
Engineering Essentials: What Is a Programmable Logic Controller?
WEBJun 1, 2015 · A programmable logic controller (PLC) is an industrial solid-state computer that monitors inputs and outputs, and makes logic-based decisions for automated processes or machines. 1. The image ...
Making the Right Shaft Connections | Machine Design
WEBAug 1, 2000 · Making the Right Shaft Connections. Aug. 1, 2000. Securing a belt pulley to a drive shaft often seems like such a routine task, that engineers and mechanics can easily overlook some of the ...
What’s the Difference Between a Motor and a Drive?
WEBJune 25, 2015. A motor is the mechanical or electrical device that generates the rotational or linear force used to power a machine. A drive is the electronic device that harnesses and controls ...
What Are the Differences Between Sprung and Unsprung Weight?
WEBMay 17, 2016 · In simple terms, a vehicle’s sprung weight is supported by springs of one kind of or another (coiled springs, air springs, Belleville springs). Unsprung weight moves up and down with the wheels ...
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