FDM 3D 프린터로 제조된 3D 프린팅 스페이서 패브릭 구조체의 역학적 성능평가
57권 2호, pp. 77-84,
4월 2020
10.12772/TSE.2020.57.077
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요약
The aim of this study is to develop shock-absorbing materials for the knee area
of wetsuits using fused deposition modeling (FDM) 3D printing technology. Four types of
samples were prepared with 3D printing spacer fabrics using thermoplastic polyurethane
filaments. The samples were named 3DSPF-2.5, 3DSPF-5.0, 3DSPF-7.5, and 3DSPF-10.0, corresponding
to sample thicknesses of 2.5, 5.0, 7.5, and 10.0 mm, respectively. Tests were performed
on the samples following DIN recommended guidelines to determine the tensile,
ball rebound, and abrasion properties. The results of the tensile test showed that the initial
modulus and load increased with sample thickness owing to the increase in the leg area
and density of the spacer layer. However, 3DSPF-7.5 had the highest elongation among the
samples. In addition, the samples in the cross direction (CD) exhibited improved tensile
properties compared to those in the machine direction. From the results of the ball
rebound test, the resilience of the samples increased according to the following sequence:
3DSPF-2.5 < 3DSPF-5.0 < 3DSPF-7.5 < 3DSPF-10.0. In the case of abrasion resistance, mass
loss followed the order of 3DSPF-10.0 < 3DSPF-7.5 < 3DSPF-5.0 < 3DSPF-2.5. Therefore, it
was demonstrated that 3DSPF-10.0 in CD possessed excellent strength, resilience, and
abrasion-resistance properties. However, considering the ease of movement after wearing
the wetsuit, 3DSPF-7.5 in CD, which exhibited the highest elongation, was confirmed to be
the most suitable material for producing 3D printed spacer fabric structures for shock
absorption in the knee area.
통계
2022년 11월부터 누적 집계
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