Thermo-Mechanical Fatigue-Lifetime Determination of Diesel Engine Exhaust Manifolds

The start-up and shut-down cycling of a heavy-duty truck engine leads to temperature and mechanical strain variations in the exhaust manifold, subjecting it to thermo-mechanical fatigue (TMF) damage. For the automotive manufacturers, it is essential to accurately predict the TMF lifetimes of the exhaust manifolds under service conditions. The...