In Part II we discuss how using our Scanning Electron Microscope (SEM/EDS) helps answer important questions as to how a steel part harvested from the tongue of a failed trailer hitch broke, and what was the cause?
As you may recall, in parts one and two of the blog series we discussed several preventative steps you can take to extend the life of your HVAC system. But, there is one last and very important area to be checked on your HVAC system:::- the refrigerant charge.
For most of us, seasonal maintenance on our home’s HVAC system is not a priority. The majority of homeowners use their HVAC system until a component fails. Understanding the basics of how our home’s HVAC system functions can help us to prioritize our HVAC maintenance.
In our first post (part 1) we discussed equipment ratings and location definitions (what is a dry or wet location). In our last post (part 2) we discussed equipment that is not made to get wet, yet for some reason it does and what do you do. So, what happens when the Authority Having Jurisdiction...
In our last post we discussed equipment ratings and location definitions (what is a dry or wet location). In this post let's discuss equipment that is not made to get wet, yet for some reason it does. Does this mean it needs to be thrown away and a new one purchased? No, of course not.
It has been common in the past to assume that water and electrical equipment do not mix. However, just because a piece of electrical equipment, such as an electrical panel or a computer, gets wet doesn't mean that it needs to be replaced.
Smoke detectors are a critical element for fire safety and have been found to reduce the risk of dying in a home structure fire by 54%. In this blog, we talk about two common types of residential smoke detectors and the importance of having them in your home.
What is an Arc-Fault Circuit Interrupter (AFCI) and how does it work? AFCIs are microprocessor-controlled devices that continuously monitor the voltage and current flowing in a circuit and interrupt the current flow if an arc is detected, and have been required as part of the National Electrical...
Beyond the obvious engineering applications or the occasional mention of a pizza or package delivery that most of us continually hear about, what sort of crazy, perhaps brilliant, drone applications have industrious problems solvers come up with? The following are three of my favorites.
To understand proper condensate removal, it is first important to have a working definition of the term condensate in the context of Heating, Ventilation, and Air Conditioning (HVAC). Most HVAC systems contain a form of refrigeration cycle which uses mechanical work acting on a fluid (in most cases...
Freshly fallen snow is often a beautiful and awe-inspiring sight to see. Some parts of the country may see new snow daily while other areas may only see it once a century. Regardless of how prepared our cities are, snow can have a great impact on our everyday lives, particularly on our structures...
EDT was asked to determine the cause of an electrocution of a pedestrian. The following information is a review of the case, and what EDT found to be the cause.
Computer graphics are visual communication tools to aid an audience in visualizing data in a clear and interesting manner, compared to text or oral communication alone. Within this article are examples of how EDT uses Computer Graphics for Forensic Engineering purposes.
Have you ever noticed eye-catching stars positioned on the fronts of masonry row homes in urban areas, such as Philadelphia, New York, Baltimore, and various other cities? The stars are not just ornamental; they are also functional.
Those of us who choose to live in Florida, expect the occasional hurricane. Some years are quiet while others are much more active. The discussion with respect to oncoming hurricanes is always: Do I evacuate or stay put and ride it out?