What’s the Difference Between Polypropylene Types?
2018年10月2日 · 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 ...
What’s the Difference Between Bearing, Shear, and Tear-Out Stress?
2016年7月1日 · A more conservative approach is to take the area from the edge of the bolt hole to the edge of the material. Shear Stress. For bolted joints without a preload shear, stress is calculated like ...
What Engineers Should Know about Zinc-Nickel Coatings
2017年2月26日 · Zn-Ni coatings typically consist of 8 to 14 µ m layer of 12 to 16% nickel alloy next to the substrate topped by a 0.06 to 0.15 µ m trivalent passivate layer and a 0.5 to 4.0 µ m top coat layer ...
What’s the Difference Between the Sagittal, Coronal, and …
2015年2月2日 · 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 ...
A Beginner’s Guide to Design Failure Mode and Effects Analysis …
2023年11月29日 · Design Failure Mode and Effects Analysis is a systematic way of mapping your product’s early-warning system. It’s a process where design engineers make sure products not only do what they’re ...
What’s The Difference Between FEM, FDM and FVM? - Machine …
2024年5月31日 · The finite-element, finite-difference and finite-volume methods—FEM, FDM and FVM, respectively—are numerical techniques used in engineering and machine design for solving partial differential ...
What’s the Difference between AC, DC, and EC Motors?
2017年8月24日 · 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 ...
The Basics of Lubricating Bearings - Machine Design
2021年1月20日 · To answer that question, designers must examine the bearing’s structure and materials. This includes the bearings, gears, clutches and other small, ancillary parts that all affect how well the ...
What’s the Difference Between Spur, Helical, Bevel, and Worm …
2015年7月31日 · Each impact makes loud noises and causes vibration, which is why spur gears are not used in machinery like cars. A normal gear ratio range is 1:1 to 6:1. Helical Gears. Helical gears have a ...
The Basics of Shoulder Screws - Machine Design
2011年11月4日 · This differs from machine screws, where the same specification yields a screw with a threaded section ¼ in. in diameter and 1-in. long. The overall length of the shoulder screw includes the head ...