What are fatigue cracks?

Fatigue cracks are cracks caused by repeated stress on the structure for a certain period of time. Fatigue cracks can be superficial many times, but at other times they can cause catastrophic failure leading to catastrophic results. Fatigue cracks are a serious engineering problem that only inspectors who are able to tell how serious cracks are. It was a national tragedy that caused many states to immediately intensify their policy of the bridge inspection. Insufficient size was caused by fatigue, which eventually led to full fractures. Once this happened, the rest of the boards failed in an event with a reaction to chains. This is known as the failure of catastrophic fatigue.

There are a number of characteristics unique to fatigue cracks. First, they occur in metal structures. Second, they also have predictable phases. These include the initial crack, progressive growth and the final fracture leading to fatigue.

While fatigue cracks can be the main problem, they can also be very predictable when browsing these phases. Only the engineer can find out whether fatigue cracks are a serious problem for the structure. In some cases, excess pieces may be introduced to prevent fatigue failure.

While the idea of ​​fatigue cracks can be frightening, they can also be predicted and prevented in many cases. The routine inspection often sees fatigue cracks and notice them. In some Cases, repairs can be done quickly and easily by replacing key parts of the structure. The good news is that fatigue cracks occur on the outside, visible parts of steel, the vast majority of time.

While a large part of the attention of fatigue cracks concentrates around bridges, it should be noted that they can affect any steel structure and lead to catastrophic results anywhere. Steel rail rails can cause train derailment if they have failed. Ocel in buildings, if it is tired enough, may also fail. This is particularly dangerous in any multiple buildings. However, fatigue disorders in buildings are not as common as failures in other applications.