Time lapse in situ X-ray imaging of failure in structural materials under cyclic loads and extreme environments

Qian, Weijian; Wu, Shengchuan; Lei, Liming; Hu, Qiaodan; Liu, Changkui

doi:10.1016/j.jmst.2023.07.041

Cited by 12 publications

(1 citation statement)

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“…These analyses have further proven the effectiveness of micro‐CT analyses, combined with finite element simulations, as a non‐destructive technique for assessing the structural integrity of AM parts with complex geometries, like lattice structures. Further useful information on the damage evolution and the origin of failure can be obtained with in situ tests51 or time lapse in situ X‐ray imaging of failure 52 and can be considered a further development of this research activity.…”

Section: Finite Element Analysesmentioning

confidence: 99%

Absorbing capabilities of additively manufactured lattice structure specimens for crash applications: Damage tolerant design and simulations

Tridello,

Boursier Niutta,

Benelli

et al. 2024

Fatigue Fract Eng Mat Struct

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In the present work, the influence of defects on the compressive response of octet‐truss AlSi10Mg lattice structure specimens produced with a selective laser melting process is investigated. The defect population in one cell, in two cells, and cubic specimens composed of 27 cells has been assessed with micro‐computed tomography (micro‐CT) analyses. The statistical distributions of the characteristic defect sizes, i.e., the equivalent diameter, the volume, and the surface, assessed in the lattice structure specimens and in volumes randomly extracted from a rectangular bar have been compared. Finally, the compressive behavior of lattice structure specimens has been simulated with a simplified damage‐tolerant finite element model accounting for the influence of defects and compared with experimental results. The analyses have proven that the defect population in volumes extracted from a rectangular bar can provide reliable simulated results, even if micro‐CT inspections of a unit cell or specimens made of several cells are suggested.

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Section: Finite Element Analysesmentioning

confidence: 99%