Comparing Wind Load Calculation Methods

2018-02-21T15:26:59+00:00

Wind Load Calculation Wind Load Calculation is an overview of the force that blowing wind exerts on a tall object.  A number of factors that influence the actual wind load on a real building, include the surrounding terrain, nearby structures,  trees, and typical weather patterns for the area.  Comparing wind load calculations are most complicated . Calculations try to account for as many of these external factors as possible, to the point where the wind load section in American Society for Civil Engineer’s ASCE 7 standard, spans five chapters and over 100 pages. Fig 1: Wind load calculation example structures ASCE 7's Applications Comparing one of ASCE 7’s Applications with the two equations [...]

Comparing Wind Load Calculation Methods 2018-02-21T15:26:59+00:00

Layered Composite Heaters for Semiconductor Processing

2018-02-20T12:34:14+00:00

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 [...]

Layered Composite Heaters for Semiconductor Processing 2018-02-20T12:34:14+00:00

Window Energy Efficiency: Solar Heat Gain and Visible Transmittance

2018-03-22T15:13:18+00:00

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 [...]

Window Energy Efficiency: Solar Heat Gain and Visible Transmittance 2018-03-22T15:13:18+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

Italian Masters: Galileo’s Stellar Science and Engineering

2018-02-21T10:55:17+00:00

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 [...]

Italian Masters: Galileo’s Stellar Science and Engineering 2018-02-21T10:55:17+00:00

12 Years a Martian: Engineering Challenges on the Red Planet

2018-04-11T14:21:57+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 2018-04-11T14:21:57+00:00

Lean and Agile Mechanical Engineering: Part 1

2018-04-05T16:41:05+00:00

Applying agile development principles to mechanical engineering.

Lean and Agile Mechanical Engineering: Part 1 2018-04-05T16:41:05+00:00

Project Management Elements Part Two: The Engineering Specification

2018-02-28T14:30:49+00:00

Engineering project management and the importance of the Engineering Specification

Project Management Elements Part Two: The Engineering Specification 2018-02-28T14:30:49+00:00

IEEE’s List of Top Technology Trends for 2014

2018-03-06T13:41:58+00:00

A review of IEEE's article on Top Technology Trends for 2014.

IEEE’s List of Top Technology Trends for 2014 2018-03-06T13:41:58+00:00

Counterfeiting The Semiconductor Industry

2018-03-09T14:18:50+00:00

A discussion on counterfeiting of semiconductor components and how it affects the electronics industry.

Counterfeiting The Semiconductor Industry 2018-03-09T14:18:50+00:00

‘Green Light’ in Greenland Lends Hope For Rare Earth Mining

2018-03-06T14:44:05+00:00

A discussion over the mining availabilityof rare earth elements in Greenland and what it means to the semiconductor and engineering industries

‘Green Light’ in Greenland Lends Hope For Rare Earth Mining 2018-03-06T14:44:05+00:00

Eco Friendly Engineering Materials & Designs: Roofing

2018-04-05T15:52:35+00:00

Engineering designs and materials for roofing that work like a heat sink and help with the thermal management within a structure.

Eco Friendly Engineering Materials & Designs: Roofing 2018-04-05T15:52:35+00:00

The Engineer’s Kitchen: Spherification Technique

2018-03-06T15:22:08+00:00

this week on The Engineer's Kitchen,I look at the technique of creating caviar type dishes known as spherification

The Engineer’s Kitchen: Spherification Technique 2018-03-06T15:22:08+00:00

Engineering Environmentally Friendly Materials: Concrete

2018-03-13T11:30:28+00:00

We look at engineering materials to replace concrete while keeping the thermal properties and thermal management of the substance.

Engineering Environmentally Friendly Materials: Concrete 2018-03-13T11:30:28+00:00

The Engineer’s Kitchen: Steak and Avocado Wraps

2018-04-06T14:57:17+00:00

Steak and avocados are the star as we engineer and quick and healthy wrap for our lunch menu on The Engineer's Kitchen

The Engineer’s Kitchen: Steak and Avocado Wraps 2018-04-06T14:57:17+00:00

The Engineer’s Kitchen: Grilled Marinara Chicken Sandwiches

2018-03-26T12:25:17+00:00

This week in The Engineer's Kitchen, we get the thermal temperature up on the grill and engineer a marinara style chicken sandwich

The Engineer’s Kitchen: Grilled Marinara Chicken Sandwiches 2018-03-26T12:25:17+00:00