Electric Vehicle Battery: Electronic Materials, Cost, and Lifespan

2018-07-03T15:48:21+00:00

(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 [...]

Electric Vehicle Battery: Electronic Materials, Cost, and Lifespan 2018-07-03T15:48:21+00:00

NAND Flash – 11 Myths Still Floating Around

2018-06-27T16:21:57+00:00

Think You Know NAND Flash?  NAND flash has become the de facto memory standard in the years since Toshiba first introduced it almost three decades ago. However, many misconceptions remain to this day about its use. A wide variety of NAND flash-memory products are available, all with significantly different features and capabilities.    All NAND flash has the same interface. NAND flash, introduced by Toshiba more than 20 years ago, is available in both the asynchronous and toggle-mode interfaces. The original asynchronous interface is found mostly in lower-density devices (<32 Gb), while high-density NAND flash (≥64 Gb) is typically used in the toggle-mode interface.( http://glewengineering.com/tester-prober-interfaces-direct-probe-part-1/  UFS memory is primarily just for smartphones. Universal Flash Storage (UFS), while smartphones [...]

NAND Flash – 11 Myths Still Floating Around 2018-06-27T16:21:57+00:00

Mechanical Engineers Engaged for Cause Investigation

2018-03-06T10:44:02+00:00

At Glew Engineering, our highly trained staff has the know-how to assist in any type of cause investigation.

Mechanical Engineers Engaged for Cause Investigation 2018-03-06T10:44:02+00:00

Italian Masters: Leonardo da Vinci – Artist, Engineer, Scientist

2018-02-20T13:14:29+00:00

Figure 1: Leonardo da Vinci, by Francesco Melzi Over the course of this blog series, I have written about a number of Italian Masters of science and engineering, from astronomers like Galileo and Cassini to physicists like Torricelli and Venturi.  I’ve saved the best for last, however: Leonardo da Vinci.  He is the quintessential renaissance man who fits both our running definition of “Italian Master” as well as being included in the standard list of Masters with Rafael, Donatello and Michelangelo  Leonardo’s incredibly broad array of talents and interests have long been the subjects of movies, books, TV shows, and, of late, video games.  Throughout his life, he had one hand in the arts, ranging from painting, sculpting, music, history, and literature, [...]

Italian Masters: Leonardo da Vinci – Artist, Engineer, Scientist 2018-02-20T13:14:29+00:00

12 Years a Martian: Engineering Challenges on the Red Planet

2018-08-29T12:57:38+00:00

Figure 1: Mars Exploration Rover By NASA/JPL/Cornell University, Maas Digital LLC [Public domain], via Wikimedia Commons Depending on which Facebook pages or Twitter feeds you follow, some of you may have caught wind that Opportunity (Mars Exploration Rover B, Figure 1) recently passed its twelfth anniversary of its landing on the red planet.  Opportunity’s ongoing trek across Mars represents a fantastic accomplishment in engineering.  At the time I’m writing this, the rover has been in continual operation for over 4,300 Earth days (that’s about 4,185 Sols, or Martian days).  Considering its original planned mission time of 92 Earth days, Opportunity has exceeded its design lifetime by 4,700%.  Imagine having a car that, instead of a [...]

12 Years a Martian: Engineering Challenges on the Red Planet 2018-08-29T12:57:38+00:00

Italian Masters: Cassini – Expert Engineer and Astronomer

2017-05-03T14:34:35+00:00

Figure 1: Giovanni Domenico Cassini We’ve been taking a break from hard-hitting mechanical engineering and materials science blogs with some pieces on the Italian masters of science, mathematics and engineering in the 16-19th centuries.  In previous blogs, I explored the lives and contributions of mathematician/physicist Evangelista Torricelli and physicist/engineer Giovanni Venturi.  For this blog, I'm focusing on Giovanni Domenico Cassini (Figure 1), a structural engineer and astronomer extraordinaire in the late 17th century.  Cassini started small, studying astrology (not astronomy!) early on in his career, but his fascination with the actual scientific properties of our celestial neighbors and his lifelong dedication to watching the night sky led him to a number of great discoveries. Giovanni Domenico Cassini (1625-1712) Giovanni Domenico Cassini [...]

Italian Masters: Cassini – Expert Engineer and Astronomer 2017-05-03T14:34:35+00:00

FEA Consulting Part 3: Meshing and Boundary Conditions

2018-03-27T15:27:13+00:00

We'll continue on now with our blog series on finite element analysis (FEA).  After discussing how to best set up a computer-aided design (CAD) model for FEA simulation, in this blog I'll cover the next step: meshing the model and applying boundary conditions.  "Meshing" is the process by which the CAD model is separated into discrete finite elements; it can be done in the same program that runs the FEA numerical simulation later, or it might be performed in a standalone program, depending on your software.  Boundary conditions are the loads (forces, movements, impacts, etc) and constraints that interact to actually cause deformation and stress in each element, and in turn the model as a whole. Mesh Generation The mesh essentially [...]

FEA Consulting Part 3: Meshing and Boundary Conditions 2018-03-27T15:27:13+00:00

Italian Masters: Venturi and the Venturi Effect

2017-05-03T14:48:59+00:00

Figure 1: Giovanni Battista Venturi [i] Glew's News is doing a short series highlighting the lives and accomplishments of the Italian Masters of science, engineering, and mathematics.  In the last blog, I wrote about Evangelista Torricelli, a mathematician and physicist from the 17th century.  In this blog, I'm focusing on Giovanni Venturi (Figure 1), an accomplished physicist, hydrodynamicist and engineer. Giovanni Battista Venturi (1746-1822) Giovanni Venturi was born to a wealthy family in Reggio, Italy in 1746.  A talented young student, by the age of 23 the local seminary had already ordained him as a priest and professor.  His talents in mathematics didn’t long escape notice at the nearby University of Modena, which appointed him as a professor of geometry and [...]

Italian Masters: Venturi and the Venturi Effect 2017-05-03T14:48:59+00:00

FEA Consulting Part 2: CAD Model Preparation

2017-05-02T16:56:01+00:00

Figure 1: Reinforced concrete mesh © Glew Engineering Consulting Welcome back to our blog series on FEA.  In the last blog entry, we introduced some of the fundamental concepts in finite element analysis (FEA).  This entry in the blog series focuses on the initial steps in preparing a computer-aided design (CAD) model ready for use in an FEA program.  Since FEA programs are very sensitive to the data they have to work with, it's important that the CAD models being analyzed are compatible with the analysis methods the FEA program uses. In order to illustrate my points throughout the blog series, I will introduce a recent FEA consulting project that we completed. Modeling Punching Shear in a Concrete Slab We were recently approached by an academic, who was examining [...]

FEA Consulting Part 2: CAD Model Preparation 2017-05-02T16:56:01+00:00

FEA Consulting Part 1: Introduction

2018-03-23T10:52:25+00:00

Figure 1: FEA mesh and shear stress results for a reinforced concrete slab © Glew Engineering Consulting, 2016 Finite Element Analysis Consulting (FEA) In this series of blogs on FEA, we will first cover some basic elements common to many FEA projects, and then in subsequent blogs in this series, illustrate those methods through examples. One of the services that Glew Engineering Consulting provides is finite element analysis consulting (FEA).  FEA consulting has been a great boon to the engineering profession, allowing mechanical engineers and civil engineers to accurately model the stress and strain behavior of complicated parts and assemblies prior to building physical prototypes.  FEA programs are capable of predicting the effects of loads and impacts, variations in temperature, changes in pressure, and [...]

FEA Consulting Part 1: Introduction 2018-03-23T10:52:25+00:00

Materials Science News: 2-D Phosphorus-The Future for Solar Cells?

2018-08-07T14:16:50+00:00

Materials science research shows that 2-dimensional phosphorus could be the future for the semiconductor industry.

Materials Science News: 2-D Phosphorus-The Future for Solar Cells? 2018-08-07T14:16:50+00:00

The Engineer’s Kitchen: Fresh Apple Crisp

2018-03-13T12:16:07+00:00

This week on The Engineer's Kitchen we engineer a fresh summer dessert using local fruit.

The Engineer’s Kitchen: Fresh Apple Crisp 2018-03-13T12:16:07+00:00

The Engineer’s Kitchen: Fusion Style Fajita’s

2018-03-26T11:32:50+00:00

This week on The Engineer's Kitchen we served up a fusion style fajita with a soy sauce marinade.

The Engineer’s Kitchen: Fusion Style Fajita’s 2018-03-26T11:32:50+00:00

The Engineer’s Kitchen: Wine and Pepper Tri-Tip

2018-03-28T11:22:06+00:00

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

The Engineer’s Kitchen: Wine and Pepper Tri-Tip 2018-03-28T11:22:06+00:00