Impact of the interface on the fatigue life of steel-based explosively welded heterostructured plates

Abstract Melted zones, microcracks, shear bands, and elastic incompatibility of explosively welded materials are features that may initialize cracks at the interface reduce fatigue strength. This study aims to determine effect interfacial defect-like structures on strength corrosion-resistant plates. Cyclic axial loading was applied seven distinct layer-by-layer compositions Ti Gr 1, Zr 700 alloys, carbon steels. The wave height as a metric potential life influencing factors along with measured strain amplitude input quantities for Machine Learning based model, i.e. Gaussian process regression (GPR). is novel successful application GPR estimate For first time, feature estimated quantitatively. Digital Image Correlation technique measure field cyclic purpose verifying if single representative heterostructured plate. It found an important its increase by 100 µm reduces analysed plates 36%. Additionally, validate applicability engineering under loading, experimental lives were compared design curve American Society Mechanical Engineers (ASME) code.