Pszczółkowski Bartosz, Nowak Konrad W, Rejmer Wojciech, Bramowicz Mirosław, Dzadz Łukasz, Gałęcki Remigiusz
Department of Material and Machine Technology, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 11, 10-719 Olsztyn, Poland.
Department of Systems Engineering, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, ul. Jana Heweliusza 14, 10-718 Olsztyn, Poland.
Materials (Basel). 2021 Dec 25;15(1):149. doi: 10.3390/ma15010149.
The objective of this study was to compare three methods for determining the Young's modulus of polylactic acid (PLA) and acrylonitrile-butadiene-styrene (ABS) samples. The samples were manufactured viathe fused filament fabrication/fused deposition modeling (FFF/FDM) 3D printing technique. Samples for analysis were obtained at processing temperatures of 180 °C to 230 °C. Measurements were performed with the use of two nondestructive techniques: the impulse excitation technique (IET) and the ultrasonic (US) method. The results were compared with values obtained in static tensile tests (STT), which ranged from 2.06 ± 0.03 to 2.15 ± 0.05 GPa. Similar changes in Young's modulus were observed in response to the processing temperatures of the compared methods. The values generated by the US method were closer to the results of the STT, but still diverged considerably, and the error exceeded 10% in all cases. Based on the present findings, it might be concluded that the results of destructive and nondestructive tests differ by approximately 1 GPa.
本研究的目的是比较三种测定聚乳酸（PLA）和丙烯腈-丁二烯-苯乙烯共聚物（ABS）样品杨氏模量的方法。样品通过熔融长丝制造/熔融沉积建模（FFF/FDM）3D打印技术制造。在180℃至230℃的加工温度下获取用于分析的样品。使用两种无损技术进行测量：脉冲激励技术（IET）和超声（US）方法。将结果与静态拉伸试验（STT）获得的值进行比较，静态拉伸试验的值范围为2.06±0.03至2.15±0.05 GPa。在比较的方法中，响应加工温度观察到杨氏模量有类似变化。超声方法产生的值更接近静态拉伸试验的结果，但仍有相当大的差异，并且在所有情况下误差均超过10%。基于目前的研究结果，可能得出结论，破坏性试验和非破坏性试验的结果相差约1 GPa。
