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Articles on Failure Analysis

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Many considerations are included in a valid engineering design process. Typically decisions that provide for safe service and expected reliability in the given component or structure are the most critical. Determining the numerical value of an appropriate safety factor (or factor of safety) during design is vital to achieving mechanical or structural integrity.

As "water hammer" (i.e. liquid impact) has the potential to cause glass bottle failure, Read Consulting LLC created two such failures to study the resulting fracture surface details.

4/23/2015 · Failure Analysis
Read Consulting was asked to determine why a welded chair failed and caused injury to the person sitting in it.

1/21/2015 · Failure Analysis
It is essential when beginning a root-cause failure analysis involving metallic materials to collect and maintain the as-found physical evidence properly prior to detailed examinations. This has two objectives. In all cases collecting and protecting the evidence in its undisturbed condition provides the best opportunity to derive meaningful good results from the subsequent analyses. Secondly, in a legal proceeding lack of attention to these matters can produce the accusation of spoilation of evidence. As a minimum this will cause presentation problems for the offending party in the suit. At worst such deficiencies by that party may cause the case to be thrown out.

Rail residual stress distributions can be complex and variable in nature, as different manufacturing techniques produce varying stress magnitudes and distributions. To evaluate the effect of residual stresses on rail integrity, an analysis technique was sought that could quantify the effect of these stresses on web crack propagation.

2/26/2014 · Failure Analysis
A significant number of elderly persons experience falls every year. In 2010, 2.3 million nonfatal fall injuries involving elderly people were treated in emergency rooms around the country. In the same year, 21,700 elderly people died as the result of unintentional falls. Falls for elderly people are extremely hazardous as they may not recover from fractures and other injuries.

The root cause of the failure of customer returns of heated automobile rear view mirrors was investigated.

12/20/2013 · Failure Analysis
A severe personal injury incident occurred as a recreational fishing boat was approaching a dock at approximately 20 mph after a day on the water. The large outboard engine (75 HP) on the stern of the boat struck a fixed underwater obstruction, flipped into the boat while still running and amputated the hand of a passenger seated near the engine.

11/11/2013 · Failure Analysis
Powered winches are in use in a variety of applications, some of the most common include vehicle-mounted electric winches, marine vessel winches, marine recovery winches, industrial winches and chain hoists. Accidents occur in all types of winch uses.

9/26/2013 · Failure Analysis
In 2007, an estimated 15,147 lives were saved from seat belt use. Seat belts save five times more lives than airbags, according to statistics released by NHTSA. Seat belt use has increased over the years, due to cultural trends, and possibly due to the enactment of seat belt use laws. Seat belt systems do not always function as predicted. Seat belt systems can fail during a collision, often resulting in serious injury or death to the vehicle occupant.

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