Resonant ultrasound spectroscopy measurement and modeling of additively manufactured octet truss lattice cubes

Tran, Brian; Fisher, Karl A.; Wang, Jenny; Divin, Chuck; Balensiefer, Gabriel J.; Townsend, Andrew P.

doi:10.1016/j.ndteint.2023.102870

Title: Resonant ultrasound spectroscopy measurement and modeling of additively manufactured octet truss lattice cubes

Journal Article · Mon May 08 00:00:00 EDT 2023 · NDT & E International

DOI:https://doi.org/10.1016/j.ndteint.2023.102870· OSTI ID:2246722

^[1]; Fisher, Karl A. ^[1]; Wang, Jenny ^[1]; Divin, Chuck ^[1]; Balensiefer, Gabriel J. ^[1]; Townsend, Andrew P. ^[1]

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

In this work, the elastic characteristics of additively manufactured Ti-5553 octet truss lattice cubes were examined using resonant ultrasound spectroscopy (RUS) techniques and correlated to X-ray computed tomography measurements of strut continuity. RUS models and measurements identified an outlier lattice possessing lower effective modulus despite larger effective density. Here, experimental measurements of density and effective Young's modulus were treated as input parameters in a homogenous anisotropic continuum model. The continuum model exhibited good agreement with experimental RUS measurements, thus confirming the potential for a simplified approximation of the octet truss lattice.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 2246722

Report Number(s):: LLNL-JRNL-858381; 1043184

Journal Information:: NDT & E International, Vol. 138; ISSN 0963-8695

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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