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  1. Applied Ultrasonics
16 September 2013

Mechanical Component Failure Analysis and Redesign

Fatigue is a fact of life in high-cycle components. However, fatigue failure does not have to be.

Applied Ultrasonics’ team of engineering experts spotted the problem within seconds. The high-cycle component failed at a geometric stress riser. While many assume that fatigue failure is isolated to weldments, this component was consistently failing in base metal at a stress riser caused by design geometry.

Applied Ultrasonics’ Engineering Services personnel recommended a solution to the customer. This solution was a change to geometry and manufacturing process – very simple in retrospect, and it decreased the manufacturing cost while also improving the life – however, the complexity was in understanding the life-cycle issues and providing a workable solution.

Noble Drilling retained Applied Ultrasonics to employ ultrasonic impact technology to treat the structure of one of their ABS classified semi-submersible offshore drilling rigs deployed...
It is commonly observed that complex fabricated structures subject to fatigue loading fail at the welded joints. Some problems can be corrected by proper detail...
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