LOW AND HIGH CYCLE FATIGUE (LCF AND HCF)
In fatigue life design, useful life is defined by the cumulative damage resulting from a combination of infrequent large amplitude cycles and frequent small amplitude cycles. Based on knowledge of the load history and the material properties, it is possible to quantify the accumulated damage that a part has endured. SimuTech has extensive experience in measuring and calculating the values for the load (both the steady and dynamic components). Remaining life is determined based on a clear definition of load history, damage accumulated to date, projected operations and material properties.
CRACK PROPAGATION AND CREEP
The science of fracture mechanics, crack initiation and growth are well understood at SimuTech. Extensive experience and a broad range of data have gone into the development of comprehensive SimuTech custom software codes for 2D and 3D crack propagation applications. These techniques have been applied to numerous projects.
EROSION - FATIGUE
SimuTech has experience with both solid particle erosion (SPE) and erosion due to high velocity condensate in steam turbines. The latter is often seen in the control stage blade rows for high pressure rotors as well as in the last stage rotors near the Wilson Line.
STRESS CORROSION CRACKING (SCC)
Using advanced fracture mechanics techniques and SCC crack propagation data, SimuTech has worked successfully with utilities in assessing the remaining life of low pressure disks and axial and radial entry blade attachments subjected to stress corrosion cracking.