2024-03-28T22:56:08Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00007657
2024-02-07T00:32:20Z
1:87
3D Reproduction of a Snow Crystal by Stereolithography
Jun’ichi, TAMAKI
Satoshi, YANAGI
Yuya, AOKI
Akihiko, KUBO
Takao, KAMEDA
A.M.M. Sharif , Ullah
A.M.M. Sharif
Ullah
open access
c 2012 日本機械学会https://www.jstage.jst.go.jp/browse/jamdsm/6/6/_contents
Snow Crystal
3D Reproduction
Light-Curing Resin
Irradiation Density
Light-Hardening Reaction
Replication Accuracy
Stereolithography
A new method was proposed for replicating snow crystals that uses light-curing resin containing no harmful substances, as the replicating material, and the 3D reproduction of a snow crystal by stereolithography was conducted. It was found that a UV light irradiation density of at least 0.6 mW/cm<SUP>2</SUP> was required to complete the light-hardening reaction within 15 min when polyene/polythiol resin (NOA81) was used as the light-curing resin. When the atmospheric temperature was 0 °C, the maximum temperature rise due to the light-hardening reaction was 4.2 °C at an irradiation density of 1.0 mW/cm<SUP>2</SUP>. This suggests that the initial temperature of the light-curing resin must be approximately -5 °C to prevent the snow crystal from melting when an irradiation density of 1.0 mW/cm<SUP>2</SUP> is applied at an atmospheric temperature of below 0 °C. This replication method has sufficient accuracy to reconstruct the 3D shape of a snow crystal. The 3D reproduction of a snow crystal by stereolithography was conducted by transforming the CSV-formatted 3D profile height data to STL-formatted CAD data.
一般社団法人 日本機械学会
2012
eng
journal article
VoR
https://kitami-it.repo.nii.ac.jp/records/7657
http://doi.org/10.1299/jamdsm.6.923
Journal of Advanced Mechanical Design, Systems, and Manufacturing
6
6
923
935
https://kitami-it.repo.nii.ac.jp/record/7657/files/No64.pdf
application/pdf
1.0 MB
2016-11-22