Degradation of EV Lithium Batteries Battery degradation in Electric Vehicles (See Figure 1. to Right) leads to capacity fade, thereby shortening the vehicle’s possible range. Patterns are beginning to emerge and provide valuable insight into EV battery capacity and lifetime. Most drivers are retaining over 90% of original capacity Range Anxiety Some cars have a range of only 106 miles, equivalent to just over three times the average daily drive in the US. New Electric Vehicles are expected to have a range of up to 235 miles, a 220% increase, therefore, range is constantly improving to address consumer concerns. Charging an EV takes time, and unless you have fast in-home charging infrastructure or public charging infrastructure it will remain a barrier. [...]
(Figure 1 - Electric Vehicle on Fire) Electric Vehicle Battery Materials Most electric vehicle batteries are lithium based and rely on a mix of cobalt, manganese, nickel, and graphite and other primary components, can be very dangerous, battery fires could occur (See Figure 1. Above). Some of these materials are harder to find than others, though none should be classified as "rare earth metals" ( http://glewengineering.com/the-impact-of-chinese-export-restrictions-on-rare-earth-elements/) . Over 60% of the global supply for cobalt comes from the Democratic Republic of Congo (DRC), which has a poor human rights track record; international organizations have denounced for years the exploitative labor practices involved in cobalt production. Cobalt deposits can be found throughout the world and are most prominent in the African Copper [...]
Semiconductor Worldwide: Samsung Takes Over GalleryDesign, Electrical Engineering, Energy Efficiency, Engineering Consulting, Finite Element Analysis, Heat transfer, Holiday, Licensed Mechanical Engineer, Mechanical Engineers, Semiconductor, Thermal Management, Uncategorized
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 [...]
As energy efficient environmentally conscious engineers, we here at Glew Engineering do what we can to save energy and resources both around home and around the office. This might mean choosing products that are more environmentally friendly or energy efficient. It might mean using our surroundings to our advantage, like pulling cold air through a home or office at night so the building needs less air conditioning the next day. The most satisfying thing, though, is to employ our knowledge of mechanical engineering, materials science and thermal management to design custom hand-tooled solutions. In the next few blog posts, I'll review some of the current in-house engineering projects that are underway here and maybe give our readers a little inspiration [...]
Wind Load Comparison between CFD and ASCE 7 for Rooftop shapes Welcome back to our blog series on the phenomenon called Wind Load CFD Modeling and how it affects civil and mechanical engineers. Wind Load is the force that blowing wind exerts on any device or structure that extends above ground level. After an initial introduction to the factors that affect wind load on an object, I compared three different sets of wind load calculation methods using three simple objects, hypothetically placed on a 100-foot-tall building. Starting with generic drag equation for the first equation, added two modification coefficients called "gust factor" and "exposure coefficient" for the second equation. I used the model for rooftop objects for the [...]
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 [...]
Engineering Environmentally Friendly Materials: Concrete GalleryEnergy Efficiency, Engineering Consulting, Expert Witness, Licensed Mechanical Engineer, Materials Science, Mechanical Engineering, Mechanical Engineering Consulting, Thermal Management
We look at engineering materials to replace concrete while keeping the thermal properties and thermal management of the substance.
In this week’s blog we will follow up the previous series of espresso thermal analysis with a thermal analysis that is a little more fitting for this
This week on the Engineer's Kitchen, We make a cool sorbet for the hot summer months
A thermal analysis experiment of a Bodom tm insulated espresso cup.
Today on The Engineer's Kitchen we have a Southwestern style Pepper Burger.
The Engineer’s Kitchen: Wine and Pepper Tri-Tip GalleryCooking for Engineering, Electrical Engineering, Energy Efficiency, Engineering Consulting, Finite Element Analysis, Heat transfer, Licensed Mechanical Engineer, Materials Science, Mechanical Engineering Consulting, Mechanical Engineers
Here in our weekly cooking blog, The Engineer's Kitchen, we create summer BBQ with a recipe for wine and pepper tri-tip with a creamy potato salad
Engineering Memorial Day Desert Over the last few weeks, we have shared some recipes in regards to the lunch menu here at Glew Engineering. W
Advances in biofuel engineering help decrease our environmental impact and increase our alternative energy alternatives.
The first blog in the series called The Engineer's Kitchen, we feature a grilled chipotle chicken recipe for healthy eating.