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Tag Archive: mechanical engineer

Improper Design Leads to Fatigue Failure In Blower Shaft
April 27, 2017 2:51 pm Leave a Comment
A blower used to exhaust air from an industrial process stopped functioning when the blower wheel drive shaft fractured. The process, and thereby most of the plant, had to operate at a reduced volume until the blower wheel could be replaced. The blower wheel had been installed during a shutdown a week before the incident. The blower wheel was a spare installed when the existing blower wheel was sent for scheduled remanufacturing. (more…)
Injury Involving a Capstan Winch
February 22, 2017 9:43 am Leave a Comment
A capstan winch uses a mechanically powered rotating cylinder, called a capstan, to apply pulling force through a rope. When the rope is looped around the rotating capstan and tightened, friction between the rope and capstan allows the winch to apply force to pull a load. A typical capstan winch is shown in Figure 1 below. (more…)
Defective Clevis Pin Culprit in Runaway Trailer
October 24, 2016 9:06 am Leave a Comment
A large agricultural trailer had been connected to a truck using a clevis pin with a spring locking clip. The trailer became disconnected from the truck and collided with an oncoming vehicle. The trailer was in poor condition, did not have safety chains, and had substantial recent modifications by the owner. (more…)
Are You Prepared for Emergencies? Your Generator Set Should Be!
October 13, 2016 10:13 am Leave a Comment
Emergency generators are often called into service during catastrophic events like hurricanes, floods, tornadoes or fires, but also during more mundane events like thunderstorms and other things that may temporarily interrupt the public power grid. Can you rely on your generator to perform at those critical times? (more…)
Another Dimension of Engineering, Part 2: Visual Demonstrations Can Clarify the Issue
June 20, 2016 9:34 am Leave a Comment
In our last post on 3D scanning, we introduced Warren’s new Faro Focus X 330 three dimensional scanner. To recap, the Faro scanner combines three dimensional laser measurement with automated photography to capture 360-degree data from the real world. Potential applications include vehicle accident scenes and damaged vehicles, structural collapses, fire scenes, flood damage scenes, and machinery and equipment analysis, among others. In this post, we will highlight some of the outputs that can be created from the detailed data captured by the scanner. (more…)
Warren Adds Another Dimension of Engineering
May 3, 2016 9:49 am Leave a Comment
We at Warren are pleased to announce our recent purchase of a Faro Focus X 330 three dimensional scanner with FARO Scene image processing software. The scanner takes up to 976,000 data points per second and can scan objects at distances to 1000 feet. The scanner forms a point cloud of millions of data points while also capturing 360 degree panoramic photographs. By combining a series of scans, a three dimensional representation can be created that enables precise measurements, animations, and demonstrations. The scanner can capture imagery indoors, outdoors, and even in darkness. (more…)
Why Should I be Concerned About Galvanic Corrosion?
April 22, 2016 3:32 pm Leave a Comment
It is fairly common knowledge that the use of dissimilar metals in plumbing systems can quickly result in a leak due to a corroded pipe or fitting. (more…)
Uninvited House Guests: Mold and Other Fungal Growths
January 21, 2016 10:29 am Leave a Comment
The wet, relatively warm weather recently experienced in the southeast has caused a high incidence of mold and other fungal growth complaints in homes and other structures. Engineers at Warren are often called upon to investigate the cause(s) of these problems. (more…)
Flood Damage to Electrical Equipment
October 8, 2015 9:38 am Leave a Comment
As a result of the recent weather, those of us in South Carolina have gained a renewed appreciation of the damage that can result from flooding. Even a few inches of flood water can result in property damage and a loss of services in addition to the immediate risk of physical harm. (more…)
Air Conditioning Evaporators
August 31, 2015 12:37 pm Leave a Comment
This is the third and final of three articles concerning the basics of air conditioning systems. This article concerns the evaporator, a part of the air conditioning system that is usually unseen inside the air handling unit. The evaporator, in concert with a fan, supplies cool air to a building interior. (more…)

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