Abstract The current research on the integrity of critical structures of rail vehicles mainly focuses on the design stage. which needs an effective method for assessing the service state. This paper proposes a framework for predicting the remaining useful life (RUL) of in-service structures with and without visible cracks. The hypothetical distribution and delay time models were used ... https://www.nacrack.com/deal-alert-Dea-Eyewear-Jemma-deal-zone/