Fatigue behavior and failure mechanism of diffusive film cooling holes considering metering angle effect

2026-07-25

PRE

Z M Li

Zhixun Wen *

Yuyao Gong

李

李世阳 (Shiyang Li) *

Zhufeng Yue

DOI：10.1016/j.ijfatigue.2026.109880

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• Femtosecond laser is used to prepare near-defect-free diffusive FCH. • Effect of diffusive FCH measuring angle on fatigue behavior is revealed. • Complete revelation of multi-scale failure mechanism from macro to micro. • Fatigue crack initiation mechanism and damage evolution are revealed.

Fatigue behavior and failure mechanism of diffusive film cooling holes considering metering angle effect

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