Fry, A T; Crocker, L E; Lodeiro, M J; Zhang, H; Poole, M; Woolliams, P; Koko, A; Breheny, C (2024) Development of an approach for measuring the tensile properties of additively manufactured lattice structures. NPL Report. MAT 127

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Abstract

A specimen design and testing approach has been developed an validated for the tensile testing of lattice structures. The ability to measure the properties of single struts, single lattice cells and multiple cell structures has been demonstrated. Samples have been measured in both large scale universal test systems and in small scale in situ test rigs with the result comparing well. The use of in situ test rigs enables testing to be conducted in the SEM and so improved understanding of the mechanistic failure modes can be gained. Nanoindentation testing has been used to determine the extent of variability in the elastic modulus in the lattice structure. All this information has been used to develop, inform and validate FE models to help understand the tensile testing of lattice structures.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	MAT 127
Subjects:	Advanced Materials > Mechanical Measurement
Divisions:	Materials and Mechanical Metrology
Identification number/DOI:	10.47120/npl.MAT127
Last Modified:	04 Apr 2025 12:29
URI:	https://eprintspublications.npl.co.uk/id/eprint/10153