ASTM D638-14 Type IV Tensile Bars - horizontal and vertical
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These are the ASTM D638-14 Type IV (4) designs utilized in a study to compare Type I with Type IV using numerous RepRap 3-D printers and users. The full study can be accessed: John J. Laureto and Joshua M. Pearce conducted an experiment where Anisotropic mechanical property variance was examined between ASTM D638-14 type I and type IV fused filament fabricated specimens, which were published in Polymer Testing journal, issue 68, pages 294-301 (2018). The study is available online with a DOI of 10.1016/j.polymertesting.2018.04.029, and it's an open access preprint that can be found on Academia.edu at https://www.academia.edu/36496554/Anisotropic_Mechanical_Property_Variance_Between_ASTM_D638-14_Type_I_and_Type_IV_Fused_Filament_Fabricated_Specimens.
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