Tensile specimen design for LB-PBF Inconel truss-based lattice structures: Manufacturing and experimental validation

Ahmed Tawfik, Guillaume Meyer, Philip Sperling, Paul Bills, Christian Mittelstedt, Liam Blunt

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The aerospace industry strives for an optimum between sustainability, cost and resource efficiency. In this regard, additive manufacturing (AM) has established itself as a disruptive technology by offering complex part design, geometrical flexibility and hence a high degree of lightweight grade. An improved competitiveness advantage for AM in an aerospace context, can be achieved using cellular structures such as honeycombs or lattices. However, in engineering practice, lattice structures are still not yet implemented for load-bearing structures. In order to use their lightweight potential and exploit lattice potential, a reliable and reproducible assessment of the mechanical properties of lattice structures for different loading scenarios is essential. On the one hand, test specimens used for material characterization have to be designed so that the required mechanical properties are not falsified by the test specimen geometry or the experiment itself. On the other hand, the small-scale manufacturing of lattice structures and their implementation into bulk parts pose challenges. Any deviation from the initial lattice design geometry may impact the mechanical performance. It is therefore of utmost importance to establish reliable and robust method for design and manufacturing and quality assessment.

Original languageEnglish
Title of host publicationEuropean Society for Precision Engineering and Nanotechnology, Conference Proceedings - 23rd International Conference and Exhibition
Subtitle of host publicationEUSPEN 2023
EditorsO. Riemer, C. Nisbet, D. Phillips
Number of pages2
ISBN (Print)9781998999132
Publication statusPublished - 12 Jun 2023
Event23rd International Conference & Exhibition for European Society for Precision Engineering and Nanotechnology - Technical University of Denmark, Copenhagen, Denmark
Duration: 12 Jun 202316 Jun 2023
Conference number: 23


Conference23rd International Conference & Exhibition for European Society for Precision Engineering and Nanotechnology
Abbreviated titleEUSPEN 2023
Internet address

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