What question did this study set out to answer?

The study aims to identify crack-initiating defects in Ti-6Al-4V and estimate fatigue limits using empirical models.

March 21, 2026Open Access

Computed tomography based investigation of critical defects and fatigue failure analysis of very high cycle fatigued Ti-6Al-4V produced by laser powder bed fusion

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Authors

PSP. SchulzKarlsruhe Institute of Technology TTThomas TöppelFraunhofer Institute for Machine Tools and Forming Technology LSLeonhard StampaFraunhofer Institute for Material and Beam Technology

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Implication

This article investigates defects and fatigue strength in additively manufactured Ti-6Al-4V, indicating potential improvements in material durability.

Key Points

The study aims to identify crack-initiating defects in Ti-6Al-4V and estimate fatigue limits using empirical models.
Ti-6Al-4V specimens manufactured by laser powder bed fusion with varied parameters.
Specimens scanned using xCT for defect analysis in different resolutions.
Cyclic testing performed in the very high cycle fatigue (VHCF) regime.
Post-mortem analysis of defects conducted with scanning electron microscopy (SEM).
Utilization of Murakami’s empirical √area-parameter model to assess defect impacts.
Identified crack-initiating defects through xCT and SEM analysis.
Determined potential fatigue locations using the empirical model.
Findings suggest measurable effects of defects on fatigue strength and durability of Ti-6Al-4V.

Cite This Study

Schulz et al. (2026) studied this question.

synapsesocial.com/papers/69be35836e48c4981c673def https://doi.org/10.5281/zenodo.10518352

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Implication

This article investigates defects and fatigue strength in additively manufactured Ti-6Al-4V, indicating potential improvements in material durability.

Computed tomography based investigation of critical defects and fatigue failure analysis of very high cycle fatigued Ti-6Al-4V produced by laser powder bed fusion

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Implication

Key Points

Cite This Study

Computed tomography based investigation of critical defects and fatigue failure analysis of very high cycle fatigued Ti-6Al-4V produced by laser powder bed fusion

Discussion

Member takes

Implication

Key Points

Cite This Study

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