A crack in the shroud of a low pressure steam turbine

A crack in the shroud of a low pressure steam turbine - Other defects

Figure 1: A crack in the shroud of a low pressure steam turbine.

Defect name: Crack
Record No.: 2009
Type of defect (Internal/Surface): Internal, surface
Defect classification: Other defects
Steel name: Steel
Steel composition in weight %: No data.
Note: All solid materials contain defects or imperfections that are departures from perfect purity, regularity and order. These defects have profound effects on the properties and behavior of solids. Many microscopic and sub-microscopic defects have useful effects but larger, structural defects, such as cracks and pores, weaken materials and cause unpredictable variations in their properties. They adversely affect the serviceability of manufactured goods. Cracks are particularly harmful because they are the result of processes that will cause structures to fail if they are allowed to continue (Figure 1). Failures in structures such as bridges, aircraft and chemical plant can have catastrophic consequences and must be prevented if possible.
Reference: Not shown in this demonstration version.