Expedited Optimization of AM Materials Using Miniaturized Testing

  • Jonathan TorresEmail author
  • Ali P. Gordon
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


The small punch test (SPT) has been developed for the purpose of characterizing materials which are scarce or costly by using reduced-size test samples. While limitations exist for utilizing the SPT for material characterization, the test economizes resources in optimizing processing for additive manufacturing (AM). Several AM materials were tested under varying conditions and stages of processing. Parameters such as build orientation, post-processing variations, and testing conditions are shown to cause notable differences in sample responses. Conditions varied in samples include variations in both sample preparation and testing conditions, including both monotonic and cyclic loading. Comparisons are made between tests to find the effects of each varied condition, and trends are correlated to show the capabilities of the SPT. Fractography results are shown exploring fracture patterns which vary depending on test conditions such as load and control type and are shown to be dependent on manufacturing orientation and processing conditions.


Miniaturized testing Material characterization 3D printing Additive manufacturing Fatigue Fracture 


  1. 1.
    Manahan MP, Argon AS, Harling OK (1981) The development of a miniaturized disk bend test for the determination of postirradiation mechanical properties. J Nucl Mater 104:1545–1550CrossRefGoogle Scholar
  2. 2.
    Standardisation, E.C.f. (2006) CEN CWA 15627: Small punch test method for metallic materials. European Committee for StandardisationGoogle Scholar
  3. 3.
    García TE et al (2014) Estimation of the mechanical properties of metallic materials by means of the small punch test. J Alloy Compd 582:708–717CrossRefGoogle Scholar
  4. 4.
    Torres-Caceres J (2018) A framework for miniaturized mechanical characterization of tensile, creep, and fatigue properties of SLM alloys. Mechanical and Aerospace Engineering. University of Central FloridaGoogle Scholar
  5. 5.
    Lancaster R et al (2018) Application of the small punch test to determine the fatigue properties of additive manufactured aerospace alloys. MATEC Web Conf 165:02003CrossRefGoogle Scholar
  6. 6.
    Dadbakhsh S, Hao L, Sewell N (2012) Effect of selective laser melting layout on the quality of stainless steel parts. Rapid Prototyping J 18(3):241–249CrossRefGoogle Scholar
  7. 7.
    Davies S et al (2017) High temperature deformation mechanisms in a DLD nickel superalloy. Materials 10(5):457CrossRefGoogle Scholar
  8. 8.
    Hurst RC et al (2016) The contribution of small punch testing towards the development of materials for aero-engine applications. Theor Appl Fract Mech 86:69–77CrossRefGoogle Scholar
  9. 9.
    Lancaster RJ et al (2014) Application of small punch test methods to advanced manufactured structures. In: 3rd international conference small scale test techniques. Schloss Seggau SeggaubergGoogle Scholar
  10. 10.
    Blackwell PL (2005) The mechanical and microstructural characteristics of laser-deposited IN718. J Mater Process Technol 170(1–2):240–246CrossRefGoogle Scholar
  11. 11.
    Williams John D (1998) Advances in modeling the effects of selected parameters on the SLS process. Rapid Prototyping J 4(2):90–100CrossRefGoogle Scholar
  12. 12.
    Amato KN et al (2012) Microstructures and mechanical behavior of Inconel 718 fabricated by selective laser melting. Acta Mater 60(5):2229–2239CrossRefGoogle Scholar
  13. 13.
    Pardini LC, Levy Neto F, McEnaney B (2000) Modelling of mechanical properties of CRFC composites under flexure loading. J Braz Soc Mech Sci 22:203–216Google Scholar
  14. 14.
    Azzam A, Li W (2014) An experimental investigation on the three-point bending behavior of composite laminate. In: IOP conference series: materials science and engineering. IOP PublishingGoogle Scholar
  15. 15.
    Moreno MS, Gutierrez AR, Vicente JM (2016) Flexural testing on carbon fibre laminates taking into account their different behaviour under tension and compression. In: IOP conference series: materials science and engineering. IOP PublishingGoogle Scholar
  16. 16.
    Torres J, Gordon AP (2017) Characterization and optimization of selective laser melting materials through small punch testing. In: ASME turbo expo 2017: turbomachinery technical conference and expositionGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  1. 1.Bucknell UniversityLewisburgUSA
  2. 2.University of Central FloridaOrlandoUSA

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