Checking Residual Stress Elimination after Post Weld Heat Treatment

Welding-induced residual stresses in pressure vessels pose significant risks—compromising structural integrity and leading to potential cracking under fluctuating pressure and thermal loads. This makes post-weld heat treatment (PWHT) a critical step in ensuring long-term durability. At Tridiagonal Solutions, our simulation experts developed a Finite Element Analysis (FEA) model that precisely captures the effects of heat treatment using a coupled transient thermal-structural approach. By focusing on critical weld junctions, we assess stress patterns in line with WRC Bulletin 452 and AWS D standards, helping to ensure design reliability and code compliance.

Whether you're a manufacturer, EPC contractor, or plant operator, this case study demonstrates how virtual testing can improve safety margins while minimizing downtime. Download the full case study to gain valuable insights into our engineering methodology and results.