Experimental-Based Structural and Thermal Analysis Supporting the Root Cause Investigation of Weld Cracking in GT Exhaust Liner
Root cause supporting analyses were conducted to investigate cracking at the GT exhaust liner strut shield welds. The assessment included review of field observations, development of a test instrumentation plan, post-processing of test data, experiment-based FE model calibration using optiSLang, and LCF and HCF evaluations of both the baseline configuration and the mitigation design. The scope covered aerodynamic and thermal loading conditions, welded joint evaluation, and structural response during gas turbine low-load operation.
- Development of a test instrumentation plan
- Post-processing of test data (temperature, pressure, strain, acceleration)
- Experiment-based FE model calibration using optiSLang
- Modal and harmonic response analyses
- Transient thermal and structural simulations
- LCF and HCF assessments of welded joints
Fabrika Brendov