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Synchrotron CT imaging of lattice structures with engineered defects

Journal Article · · Journal of Materials Science
 [1];  [2];  [2];  [2];  [2];  [2];  [3];  [3];  [4];  [4];  [4];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Inst. for Materials Science, Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Arizona State Univ., Tempe, AZ (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Understanding mechanical failure, crack propagation, and compressive behavior at the micrometer scale is essential for tailoring material properties for structural performance in cellular materials. Typically, modeling of traditional polymer foam materials is clouded by the lack of control in material morphology and its inherent stochastic structure. Additive manufacturing with sub-micrometer resolution provides a direct path for experimenters to specifically tailor structures needed by modelers to explicitly probe mechanical performance. Using laboratory-based 3D X-ray computed tomographic imaging (CT), the examination of deformation and damage provides a critical path to understand how these soft materials behave. Additionally, synchrotron CT yields realistic information at higher strain rates to directly validate the robustness of our finite element modeling. For this study, nanolithographic printing was employed to generate a series of engineered lattices with increasing levels of defects through the random removal of ligaments. These structures were mechanically tested and imaged with laboratory-based microCT. Additionally, synchrotron experiments were conducted in which the structures were imaged in 3D at 14 Hz during compression at a 0.4 s–1 strain rate. These 3D images show the changes in the structure as the ligaments bend, buckle and fracture in real time. This technique provides a robust framework for developing our methodologies and future exploration of engineered structures.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1762695
Journal Information:
Journal of Materials Science, Journal Name: Journal of Materials Science Journal Issue: 25 Vol. 55; ISSN 0022-2461
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (35)

Design and Fabrication of Hollow Rigid Nanolattices via Two-Photon Lithography: Design and Fabrication of Hollow Rigid Nanolattices journal October 2013
Finite-element modeling of trabecular bone: Comparison with mechanical testing and determination of tissue modulus journal September 1998
A review on 3D micro-additive manufacturing technologies journal November 2012
20 Hz X-ray tomography during an in situ tensile test journal February 2016
Improving the fracture toughness of 3D printed thermoplastic polymers by fused deposition modeling journal December 2017
The effects of strain rate, density, and temperature on the mechanical properties of polymethylene diisocyanate (PMDI)-based rigid polyurethane foams during compression journal January 2009
In situ X-ray synchrotron tomographic imaging during the compression of hyper-elastic polymeric materials journal September 2015
Analysis of thermal history effects on mechanical anisotropy of 3D-printed polymer matrix composites via in situ X-ray tomography journal July 2017
The effect of grain size, strain rate, and temperature on the mechanical behavior of commercial purity aluminum journal October 2006
A comparison among Neo-Hookean model, Mooney-Rivlin model, and Ogden model for chloroprene rubber journal May 2012
Elastic constants of cellular structures journal June 1997
A novel theory of effective mechanical properties of closed-cell foam materials journal December 2013
Defect sensitivity of a 3D truss material journal September 2001
Finite element modelling of the actual structure of cellular materials determined by X-ray tomography journal February 2005
Mapping local deformation behavior in single cell metal lattice structures journal May 2017
Hyperelastic strain measurements and constitutive parameters identification of 3D printed soft polymers by image processing journal July 2016
Influence of processing and orientation print effects on the mechanical and thermal behavior of 3D-Printed ULTEM® 9085 Material journal January 2017
Additive manufacturing (3D printing): A review of materials, methods, applications and challenges journal June 2018
Cohesive finite element modeling of the delamination of HTPB binder and HMX crystals under tensile loading journal May 2018
Stress–strain behaviour of aluminium alloys at a wide range of strain rates journal October 2009
On the crushing response of random open-cell foams journal October 2012
Impact of material processing and deformation on cell morphology and mechanical behavior of polyurethane and nickel foams journal October 2012
Failure modes in high strength and stiffness to weight scaffolds produced by Selective Laser Melting journal February 2015
The effect of varying strain rates and stress states on the plasticity, damage, and fracture of aluminum alloys journal October 2010
Effect of temperature and strain rate on the tensile deformation of polyamide 6 journal May 2007
Mapping internal deformation fields in 3D printed porous structure with digital volume correlation journal September 2019
Cellular Solids book January 2014
Reactive, anomalous compression in shocked polyurethane foams journal May 2014
TomoPy: a framework for the analysis of synchrotron tomographic data journal August 2014
Fast iterative reconstruction of data in full interior tomography journal January 2017
Ultralight, ultrastiff mechanical metamaterials journal June 2014
Continuous liquid interface production of 3D objects journal March 2015
Rapid, large-volume, thermally controlled 3D printing using a mobile liquid interface journal October 2019
Quantitative X-ray tomography journal December 2013
In Situ Imaging during Compression of Plastic Bonded Explosives for Damage Modeling journal June 2017

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