In-Situ Full-Field Strain Measurement at the Sub-grain Scale Using the Scanning Electron Microscope Grid Method

Abstract

Full-field measurement techniques are invaluable tools for investigating material behavior across length-scales. In the current work, a full-field measurement technique, the Grid Method, is implemented within a scanning electron microscope to demonstrate its ability to capture deformation heterogeneities at sub-grain length-scales. Microgrids, fabricated using focused ion beam platinum deposition are positioned on multiple areas with different underlying microstructure of an aluminum 1100 oligo-crystal. In-situ scanning electron microscope tensile testing is then conducted while capturing micrographs of the deposited grids after individual loading increments. Strain maps are generated through localized spectral analysis of a reference (non-deformed) and deformed micrographs. The strain maps exhibit intragranular and transgranular heterogeneities. The current work demonstrates the successful implementation and promise of the SEM grid method for extracting strain maps at reduced length-scales.

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References

  1. 1.

    Foehring D, Chew Huck B, Lambros J (2018) Characterizing the tensile behavior of additively manufactured ti-6al-4v using multiscale digital image correlation. Mater Sci Eng A 724:536–546

    CAS  Article  Google Scholar 

  2. 2.

    Feiteira J, Tsangouri E, Gruyaert E, Lors C, Louis G, De Belie N (2017) Monitoring crack movement in polymer-based self-healing concrete through digital image correlation, acoustic emission analysis and sem in-situ loading. Mater Des 115:238–246

    CAS  Article  Google Scholar 

  3. 3.

    Mehdikhani M, Steensels E, Standaert A, Vallons KAM, Gorbatikh L, Lomov SV (2018) Multi-scale digital image correlation for detection and quantification of matrix cracks in carbon fiber composite laminates in the absence and presence of voids controlled by the cure cycle. Compos Part B: Eng 154:138–147

    CAS  Article  Google Scholar 

  4. 4.

    Ravindran S, Koohbor B, Kidane A (2017) Experimental characterization of meso-scale deformation mechanisms and the rve size in plastically deformed carbon steel. Strain 53(1):e12217

    Article  Google Scholar 

  5. 5.

    Godara A, Raabe D (2007) Influence of fiber orientation on global mechanical behavior and mesoscale strain localization in a short glass-fiber-reinforced epoxy polymer composite during tensile deformation investigated using digital image correlation. Compos Sci Technol 67(11-12):2417–2427

    CAS  Article  Google Scholar 

  6. 6.

    Wang X, Witz J-F, El Bartali A, Jiang C (2016) cOis Infrared thermography coupled with digital image correlation in studying plastic deformation on the mesoscale level. Opt Lasers Eng 86:264–274

    Article  Google Scholar 

  7. 7.

    Kammers AD, Daly S (2013) Digital image correlation under scanning electron microscopy: methodology and validation. Exp Mech 53(9):1743–1761

    Article  Google Scholar 

  8. 8.

    Chen Z, Daly S H (2017) Active slip system identification in polycrystalline metals by digital image correlation (dic). Exp Mech 57(1):115–127

    Article  Google Scholar 

  9. 9.

    Stinville J C, Echlin M P, Texier D, Bridier F, Bocher P, Pollock T M (2016) Sub-grain scale digital image correlation by electron microscopy for polycrystalline materials during elastic and plastic deformation. Exper Mech 56(2):197–216

    CAS  Article  Google Scholar 

  10. 10.

    Berfield T A, Patel J K, Shimmin R G, Braun PV, Lambros J, Sottos NR (2007) Micro-and nanoscale deformation measurement of surface and internal planes via digital image correlation. Exp Mech 47(1):51–62

    CAS  Article  Google Scholar 

  11. 11.

    Knauss WG, Chasiotis I, Huang Y (2003) Mechanical measurements at the micron and nanometer scales. Mech Mater 35(3-6):217–231

    Article  Google Scholar 

  12. 12.

    Mehdikhani M, Aravand M, Sabuncuoglu B, Callens MG, Lomov SV, Gorbatikh L (2016) Full-field strain measurements at the micro-scale in fiber-reinforced composites using digital image correlation. Compos Struct 140:192–201

    Article  Google Scholar 

  13. 13.

    Grediac M, Sur F, Blaysat B (2016) The grid method for in-plane displacement and strain measurement A review and analysis. Strain 52(3):205–243

    Article  Google Scholar 

  14. 14.

    Sur F, Blaysat B, Grediac M (2016) Determining displacement and strain maps immune from aliasing effect with the grid method. Opt Lasers Eng 86:317–328

    Article  Google Scholar 

  15. 15.

    Sur F, Grédiac M (2015) On noise reduction in strain maps obtained with the grid method by averaging images affected by vibrations. Opt Lasers Eng 66:210–222

    Article  Google Scholar 

  16. 16.

    Grediac M, Sur F (2014) 50th anniversary article: effect of sensor noise on the resolution and spatial resolution of displacement and strain maps estimated with the grid method. Strain 50(1):1–27

  17. 17.

    Badulescu C, Grédiac M, Haddadi H, Mathias J-D, Balandraud X, Tran H-S (2011) Applying the grid method and infrared thermography to investigate plastic deformation in aluminium multicrystal. Mech Mater 43(1):36–53

    Article  Google Scholar 

  18. 18.

    Badulescu C, Grédiac M, Mathias JD (2009) Investigation of the grid method for accurate in-plane strain measurement. Measur Sci Technol 20(9):095102

  19. 19.

    Odounga B, Pitti RM, Toussaint E, Grédiac M (2018) Mode i fracture of tropical woods using grid method. Theor Appl Fract Mech 95:1–17

    Article  Google Scholar 

  20. 20.

    Dang D, Moutou Pitti R, Toussaint E, Grédiac M (2018) Investigating wood under thermo-hydromechanical loading at the ring scale using full-field measurements. Wood Sci Technol 52(6):1473–1493

    CAS  Article  Google Scholar 

  21. 21.

    Dang D, Moutou Pitti R, Toussaint E, Grédiac M (2018) Inverse identification of early-and latewood hydric properties using full-field measurements. Wood Mater Sci Eng 13(1):50–63

    CAS  Article  Google Scholar 

  22. 22.

    Toussaint E, Fournely E, Moutou Pitti R, Grédiac M (2016) Studying the mechanical behavior of notched wood beams using full-field measurements. Eng Struct 113:277–286

    Article  Google Scholar 

  23. 23.

    Fletcher L, Pierron F (2018) An image-based inertial impact (ibii) test for tungsten carbide cermets. J Dyn Behav Mater 4(4):481–504

    Article  Google Scholar 

  24. 24.

    Van Blitterswyk J, Fletcher L, Pierron F (2018) Image-based inertial impact test for composite interlaminar tensile properties. J Dyn Behav Mater 4(4):543–572

    Article  Google Scholar 

  25. 25.

    Lukić B, Saletti D, Forquin P (2017) Use of simulated experiments for material characterization of brittle materials subjected to high strain rate dynamic tension. Philosophical Transactions of the Royal Society A: Mathematical. Phys Eng Sci 375(2085):20160168

  26. 26.

    Teguedi MC, Blaysat B, Toussaint E, Moreira S, Liandrat S, Grédiac M (2016) Applying a full-field measurement technique for studying the local deformation in reclaimed asphalt pavements. Constr Build Mater 121:547–558

    Article  Google Scholar 

  27. 27.

    Teguedi MC, Toussaint E, Blaysat B, Moreira S, Liandrat S, Grédiac M (2017) Towards the local expansion and contraction measurement of asphalt exposed to freeze-thaw cycles. Constr Build Mater 154:438–450

    Article  Google Scholar 

  28. 28.

    Delpueyo D, Grédiac M, Balandraud X, Badulescu C (2012) Investigation of martensitic microstructures in a monocrystalline cu–al–be shape memory alloy with the grid method and infrared thermography. Mech Mater 45:34–51

    Article  Google Scholar 

  29. 29.

    Balandraud X, Barrera N, Biscari P, Grédiac M, Zanzotto G (2015) Strain intermittency in shape-memory alloys. Phys Rev B 91(17):174111

  30. 30.

    Le Louëdec G, Pierron F, Sutton M A, Siviour C, Reynolds A P (2015) Identification of the dynamic properties of al 5456 fsw welds using the virtual fields method. J Dyn Behav Mater 1(2):176–190

    Article  Google Scholar 

  31. 31.

    Mirmohammad H, Kingstedt O Theoretical considerations for transitioning the grid method technique to the micro-scale. Experimental Mechanics, volume(number):pages, 2020 (under review)

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Acknowledgements

The authors would like to thank Jeff Kessler, the director of the Solid Mechanics testing Suite at the Department of Mechanical Engineering of the University of Utah for provided training on the use of the Psylotech loadframe. Special thanks to Mitch Metcalf for his collaboration with the in-situ testing set up preparation. This work has also made use of the University of Utah USTAR shared facilities supported, in part, by the MRSEC program of the NSF under award No. DMR-1121252. This research is being performed using funding received from the DOE Office of Nuclear Energy’s Nuclear Energy University Program (DOE-NEUP) under award No. DE-NE0008799.

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Correspondence to Owen T. Kingstedt.

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Mirmohammad, H., Gunn, T. & Kingstedt, O.T. In-Situ Full-Field Strain Measurement at the Sub-grain Scale Using the Scanning Electron Microscope Grid Method. Exp Tech 45, 109–117 (2021). https://doi.org/10.1007/s40799-020-00402-8

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Keywords

  • SEM-GM
  • SEM in-situ testing
  • FIB platinum deposition
  • Microscale full-field measurement technique
  • Aluminum oligo-crystal microstructure characterization