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Updated: May 10, 2026

Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method
Published on: January 16, 2019
Correlative light-electron fractography for fatigue striations characterization in metallic alloys
Luis Rogerio de Oliveira Hein1, José Alberto de Oliveira, Kamila Amato de Campos
1LAIMat - Materials Imaging Laboratory, Materials and Technology Department, Faculty of Engineering at Guaratinguetá, UNESP - São Paulo State University, Guaratinguetá, SP, Brazil.
Abstract:
The correlative light-electron fractography technique combines correlative microscopy concepts to the extended depth-from-focus reconstruction method, associating the reliable topographic information of 3-D maps from light microscopy ordered Z-stacks to the finest lateral resolution and large focus depth from scanning electron microscopy. Fatigue striations spacing analysis can be precisely measured, by correcting the mean surface tilting with the knowledge of local elevation data from elevation maps. This new technique aims to improve the accuracy of quantitative fractography in fatigue fracture investigations.
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