期刊
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
卷 115, 期 9-10, 页码 3233-3242出版社
SPRINGER LONDON LTD
DOI: 10.1007/s00170-021-07382-y
关键词
3D printing; Additive manufacturing; Wood; Polylactic acid; Sandwich structure; Honeycomb
资金
- Slovenian Research Agency [Bi-CN/18-20-016, P4-0015]
This study investigated the effects of core configuration on the mechanical properties of additively manufactured wood/PLA specimens. Samples with a hexagonal infill pattern demonstrated the highest mechanical properties, with mechanical properties increasing significantly with higher infill rates. Additionally, specimens with hexagonal cores exhibited the highest rate of elastic recovery after Brinell hardness tests.
This study aimed to understand the effects of core configuration on the mechanical properties of additively manufactured specimens made of commercial wood/PLA filament through 3D printing. The wood/PLA specimens with different infill rates and pattern types, such as square, hexagonal, and octagonal, were manufactured using a 3D printer. The process parameters in the production of the 3D-printed specimens were kept constant, except for the core configuration. The outside layer thickness was kept constant for all the specimens. The specimens with a hexagonal pattern had the highest mechanical properties, followed by the square and octagonal core patterns. In terms of infill rate, the mechanical properties sharply increased with increasing infill rate. In particular, when the infill rate increased from 20 to 50%, the rate of increase in the mechanical properties was significantly higher than that seen from 50 to 80%. The highest rate of the elastic recovery after the Brinell hardness tests was found in the specimens with hexagonal cores, followed by square- and octagonal-shaped cores.
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