How Do Engineers Handle Rainwater? Engineers can help with proper fitting of gutters, or eaves troughs as they are called in some parts of the country. They are an important part of the drainage system around your house. If yours are nonexistent, in poor condition, or improperly placed on your house, they could be causing problems and putting your home at risk of water damage. Gutters need to be installed properly so that they catch the water coming off your roof and channel it away from your house and its foundation. Your eaves troughs should have a downward slope of 1/2 inch for every 10 feet of run to ensure they drain completely. If your house is more than [...]
What is a Connected Smart Home? A connected Smart Home brings devices and services together for an integrated, autonomous experience that improves a consumer’s life. Connected home experiences include everything from voice-controlled lights, house-cleaning robots, machine learning-enabled security cameras, and WiFi routers that troubleshoot for you. Thanks to decreasing costs and increasing options for connectivity, these smart home devices, sensors, and tools can be interlinked to create real-time, contextual, and smart experiences for consumers. Both Mechanical Engineers and Electrical Engineers design these products for more convenient and enhanced experiences. (http://glewengineering.com/engineers-develop-ways-to-ventilate-your-home/ A Smart Home can bring new features and capabilities to smart devices, like interconnectivity, security, offline communication, predictive maintenance, analytics for consumer insights, and machine learning. Each of these capabilities [...]
Material Scientist Ponder What to Do With Used EV Batteries As electric vehicles become mainstream, mechanical engineers and chemical engineers are trying to address the big environmental question: what do we do with the used lithium-ion batteries? The batteries used in electric cars are physically large, last 8 to 10 years, and will account for 90 per cent of the lithium-ion battery market by 2025. This will increase lithium demand fourfold, and more than double the demand for cobalt — two of their essential elements. The price of cobalt has already risen by more than 80 per cent in 2018. Most expert Material Scientists agree that a replacement hybrid car battery can range from $1,000 to more than $6,000. The [...]
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Samsung topples Intel as top dog semiconductor market share Gartner beancounters say price rises driven by memory shortages propelled Samsung into the lead based on semiconductor vendor revenue, vaulting past Intel and its CPUs. The largest memory supplier, Samsung Electronics, gained the most semiconductor market share and took the No. 1 position from Intel – the first time Intel has been toppled since 1992. Memory accounted for more than two-thirds of all semiconductor revenue growth in 2017, and became the largest semiconductor category. DRAM prices rose 44 per cent from 2016 to 2017, and NAND flash prices went up 17 per cent year-over-year for the first time. (See Figure Below) A Gartner table provides the numeric nitty-gritty [...]
A Mechanical Engineer Designs Ways to Give Your Canine Friend a Lift Up A Mechanical Engineer designs ways to give your "Best Friend" easy access to your vehicle and different higher surfaces. Read more to find out what kind of options are available for your dog. A properly sized and installed dog ramp eases a dog's boarding dilemmas. Ramps are divided into several categories: folding, telescoping, fixed, moveable and those that are stored under the back bumper of a car. This article describes the different types of dog ramps available and the engineering required to properly design them. Fig. 1 Mechanical Engineers Design Easy Car Access for Dogs Mechanical Design, Materials Science, Weight, and Ease [...]
Figure 1: Composite layered heater from patent US 9,224,626 B2 Alexander Glew, Ph.D., P.E. recently contributed to a new patent on an advanced thin-film electric heaters, layered composite heaters, for CVD semiconductor processing and related technologies titled “Composite substrate for layered heaters”. Watlow Electric, based in St. Louis, hired Glew Engineering and Dr. Glew to help develop this heater technology due to his experience in the Silicon Valley’s semiconductor industry. As a semiconductor equipment expert and materials engineering consultant, Dr. Glew’s familiarity with semiconductor manufacturing meant he understood both the limitations of common semiconductor chuck heating methods and the techniques that could be used to construct a better heater. In this post, we review how this composite heater capitalizes on semiconductor [...]
Conduction and Radiation of Thermal Energy In my last blog post, I wrote about the conduction and radiation of thermal energy through windows and the thermal transmittance value, called the U-Factor, that characterizes that heat transfer. The U-factor is useful in evaluating window performance and making wise decisions when specifying components for a building, but it is only one piece of the puzzle. The National Fenestration Research Council (NFRC) mandates a second value alongside U-factor in its certification process, called the Solar Heat Gain Coefficient (SHGC). SHGC represents the ability of a window to resist heat gain from radiation, like the sunlight in Figure 1. This is obviously a challenge, given that the entire point [...]
Italian Masters: Volta Jump-Starts Electrical EngineeringFigure 1: Girolamo Cardano (1501-1576) Welcome back to our series on Italian Masters of math and science. Last week I wrote about Galileo’s extensive accomplishments both in the field of astronomy and beyond. This week, I’ll take a look at another renaissance polymath who dabbled in astronomy, along with his work in mathematics, medicine, biology, chemistry, philosophy, and gambling (yes, seriously): Girolamo Cardano. Cardano is a less well-known figure than Galileo or some of the other scientists I’ve written about who have famous equations or units of measurement named after them, like Volta or Torricelli. He is regarded as one of the greatest mathematicians of his age, however, and made a great many contributions to science, [...]
Portrait of Galileo Galilei Justus Sustermans [Public domain], via Wikimedia Commons I’d like to return to our previous series on the Italian Masters, focused not on the usual masters or painting and sculpture but on the masters or science, mathematics, and engineering. So far in the series I’ve written about the accomplishments of Volta, Cassini, Venturi and Torricelli. Today, I’d like to look at one of the greats: Galileo Galilei. Galileo is most famous today for standing up for heliocentrism against the Catholic Church and spending the last years of his life under house arrest as punishment. However, Galileo didn’t let controversies or confinement stop him, and accomplished a great amount of research in not only [...]
Figure 1: Mars Exploration Rover mobility testing By NASA
Engineering designs and materials for roofing that work like a heat sink and help with the thermal management within a structure.
This week on the Engineer's Kitchen, We make a cool sorbet for the hot summer months
Printed Circuit Board design information which include routing, electronics thermal management, SPICE models and more.