The influence of dog-bone shaped specimen geometry on tensile test results of fused filament fabricated Nylon 12

• Published in: Journal of mechanical science and technology Vol. 37; no. 3; pp. 1077 - 1082
• Main Authors: Baba, Marius Nicolae, Itu, Călin
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Mechanical Engineers 01.03.2023; Springer Nature B.V; 대한기계학회
• Subjects: Control; Cross-sections; Dynamical Systems; Elongation; Engineering; Industrial and Production Engineering; Mechanical Engineering; Nylon 12; Original Article; Specimen geometry; Tensile stress; Tensile tests; Ultimate tensile strength; Vibration; 기계공학; Elongation at break; Ultimate tensile strength; Fused filament fabrication; Dogbone shaped specimens; Elasticity modulus; Static tensile test; Nylon 12 (PA12)
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-022-2102-6

This paper reports our study comparing the tensile stress-strain data taken on a fused filament fabricated Nylon 12 material additively manufactured in two distinct directions (i.e., horizontal and vertical), using typical dog-bone shaped specimens of two different cross-section shapes; rectangular and circular. Our objectives in carrying out this investigation were to evaluate the effects of specimen geometry on the elasticity and strength characteristics of the involved PA12 material. One-way ANOVA analysis, Tukey’s HSD, and Games-Howell tests were considered to compare the mean values of two cross-section shapes’ groups (i.e., rectangular vs. circular). The results of ultimate tensile strength obtained for horizontally printed specimens and the elongation at break deTermined for vertically oriented samples show notable differences at a significance p -level of 0.05.