Ventilation Exemption Letter – Mechanical Engineers Help


A Ventilation Exemption Letter could be on the rise after the Shelter in Place /Social Distancing is released.

Ventilation Exemption Letter – Mechanical Engineers Help2020-08-03T00:55:58-07:00

Net Zero: Home Energy Systems


Net Zero energy homes are just like any home except more appropriate in today's world.   Regular grid-tied homes that are so air-tight, well insulated, and energy-efficient that they produce as much renewable energy as they consume over a year. Occupants virtually receive no energy bill and a carbon-free home.  A Net Zero energy home combines advanced design and superior building systems with energy efficiency and on-site solar panels.   Homes are ultra-comfortable, healthy, quiet, sustainable that is affordable. (1) In addition, engineers will work hard toward the development of personalized energy units, manufactured, distributed, and installed inexpensively. One can envision [...]

Net Zero: Home Energy Systems2020-08-03T00:56:03-07:00

Medical Face Shields – 3D Printing


Helping the Medical Community – Have a 3D Printer? Medical Face Shields during the Th COVID-19 outbreak continues to expand globally. Information from healthcare organizations say that some distributors have placed certain types of personal protective equipment (PPE) on allocation, therefore, Basing the quantity of Medical Face Shields available to the healthcare organization on previous usage, not projected use.  This formula greatly puts the front-line health workers at great risk. Medical Face Shields simple in design, produced and assembled by hobbyists on their own home 3D printers.  Searching for a way to help the medical workforce?  Already have a 3D [...]

Medical Face Shields – 3D Printing2020-08-03T00:56:18-07:00

Medical Robots – Role Expands


Medical Robots while in high demand, medical professionals seek hands-free ways to disinfect environments, helping contain the spread of coronavirus . COVID-19. Hospitals in China, for example,

Medical Robots – Role Expands2020-08-03T00:56:27-07:00

Wearable Brain Interface: Controls Wheelchairs


Combining new classes of nanomembrane electrodes with flexible electronics and a deep learning algorithm could help disabled people wirelessly control an electric wheelchair, interact with a computer or operate a small robotic vehicle without donning a bulky hair-electrode cap or contending with wires.

Wearable Brain Interface: Controls Wheelchairs2020-08-03T00:56:38-07:00

Alternative to Air Conditioning


Though great on a hot day, an air conditioner is expensive, consumes a lot of energy, and often requires coolants that deplete ozone.

Alternative to Air Conditioning2020-08-03T00:56:41-07:00

Alternative to Polystyrene Foam


Alternatives for Polystyrene Foam, Made from petroleum, Styrofoam is used in everything from coffee cups, building materials and construction, transportation, and packaging industries. Made from toxic ingredients, depends on petroleum.

Alternative to Polystyrene Foam2020-08-03T00:56:43-07:00

Hand-Held Instrument Fights Acne, OTC Market


Instrument Fights Acne, Tyrell Inc., a Houston-based medical technologies company, accessed engineering support for a problem with redesigning a heating element for a hand-held acne-fighting device

Hand-Held Instrument Fights Acne, OTC Market2020-08-03T00:56:51-07:00

Wind Load Calculations and Modeling


 Part 1 of our Wind Load Series “Wind load” is a calculated value representing the total force on a structure or object cause by pressure from wind moving over it.  In this blog series, we will discuss different methods for wind load calculations, the factors that influence its magnitude, and the effects a high wind load can have on a structure.  Wind load is most commonly addressed by civil and structural engineers when designing buildings, but mechanical engineers can encounter the effect when designing tall objects like cranes, telescoping communications masts or wind turbine towers. Wind Load Essentials As a [...]

Wind Load Calculations and Modeling2018-02-20T12:26:27-08:00

Layered Composite Heaters for Semiconductor Processing


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 [...]

Layered Composite Heaters for Semiconductor Processing2018-02-20T12:34:14-08:00

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


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, [...]

Italian Masters: Leonardo da Vinci – Artist, Engineer, Scientist2018-02-20T13:14:29-08:00

Thermal Expansion in a Glass and Aluminum Window: Part 2


Figure 1: Simplified model of an aluminum-glass window   In last week’s blog, Thermal Expansion in a Glass and Aluminum Window: Part 1, we introduced the basic concept of thermal expansion in solid materials.  Since CTE mismatch can impose extremely high stress, during mechanical engineering design one must consider the temperature exposure and expansion or contraction of a material.  In order to help the read gain insight, we used a simplified aluminum-framed window to demonstrate that a hot summer day would be enough to shatter glass if the window wasn’t equipped with a flexible gasket between [...]

Thermal Expansion in a Glass and Aluminum Window: Part 22018-02-20T13:29:14-08:00

Thermal Expansion in a Glass and Aluminum Window: Part 1


Equipment designers must accommodate thermal expansion (CTE)of dissimilar materials, especially when they are subject to large temperature changes.  This problem is often called "CTE mismatch."  In this blog, we give the fundamentals of thermal expansion calculations used in thermo-mechanical analysis. These calculations are simple but useful, and easy enough to perform by hand or with a spread sheet. For more complicated shapes, one must use computer modeling.  As an example, we perform a finite element analysis (FEA) in a later blog, of a glass and aluminum window and frame to show where the stress is [...]

Thermal Expansion in a Glass and Aluminum Window: Part 12018-02-21T10:38:23-08:00

Italian Masters: Galileo’s Stellar Science and Engineering


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 [...]

Italian Masters: Galileo’s Stellar Science and Engineering2018-02-21T10:55:17-08:00

12 Years a Martian: Mechanical Engineering on Mars, The Red Planet


Figure 1: Mars Exploration Rover mobility testing By NASA

12 Years a Martian: Mechanical Engineering on Mars, The Red Planet2018-04-10T16:24:41-07:00

FEA Consulting Part 6: Analyzing Results


Figure 1: Shear stress results for our concrete slab simulation.  The red area of high compression is where the corner of the square-shaped supporting column holds up the slab. © Glew Engineering Consulting, 2016 Welcome to the final entry in our finite element analysis (FEA) blog series, in which I'll discuss a little about analyzing and evaluating FEA results.  Over the course of this blog series, I've covered tips on setting up the model in CAD and in the FEA program, configuring the analysis, and generating results.  The final step in the process is the analysis of the results, [...]

FEA Consulting Part 6: Analyzing Results2017-11-08T16:44:21-08:00

FEA Consulting Part 5: Generating Results


Figure 1: Displacement results for our concrete slab simulation.  The slab is supported in the center by a square column, and on the sides by a theoretical wall. © Glew Engineering Consulting, 2016 Time now for the last in our blog series on FEA.  I’ve previously discussed how to set up CAD for FEA, how to mesh that CAD model and the different types of analysis that FEA programs can run.  The next step in the process is generating results from the FEA simulation, like the displacement illustration in Figure 1.  These are fantastic tools for generating useful reports, and [...]

FEA Consulting Part 5: Generating Results2017-05-03T15:37:10-07:00

FEA Consulting Part 4: Simulation and Analysis


Figure 1: Mesh, loads and constraints, ready for analysis © Glew Engineering Consulting, inc. 2016 Welcome again to our series on finite element analysis (FEA).  In the last blogs, I covered steps on setting up a computer-aided design (CAD) model and how to set up the mesh and boundary conditions, the most crucial steps in FEA simulation.  In this blog, I’ll look at the actual simulation and analysis, which can be the most time-consuming stage in the process. As a reminder, for an example I’ve been using a recent project we worked on involving punching shear in reinforced concrete.  We were examining [...]

FEA Consulting Part 4: Simulation and Analysis2017-05-05T10:07:54-07:00
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