This paper proposes an approach to predicting fatigue crack growth under mixed-mode loading based on improved Gaussian process. In terms of analyzing the theoretical background for growth, a corresponding finite element model is built generate sufficient simulation data, which utilized obtain key parameters (e.g., stress intensity factor) And then, process achieved meet condition that factor no...

Two grades of HDPE (one is for PE-100 pipeline application and one blow molding) were processed to vary their crystallinity molecular topology in order investigate understand the microstructural origin seismic performance materials. For a given grade, quenched sample exhibits lower crystallinity, thinner crystallites, higher density entanglement/tie molecules compared isothermal one. The sample...