Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Su Hwan Yun"'
Autor:
Hyuk-Jin Yoon, Su-Hwan Yun, Dae-Hyun Kim, Jae Hee Kim, Bong-Kwan Cho, Gi-Gun Lee, Soon-Eung Park, Young-Chul Kim
Publikováno v:
Applied Sciences, Vol 10, Iss 10, p 3495 (2020)
Imaging devices attached to unmanned aerial vehicles (UAVs) are used for crack measurements of railway bridges constructed for high-speed trains. This research aims to investigate track-side wind induced by high-speed trains and its effect on UAV thr
Externí odkaz:
https://doaj.org/article/44f84a247819468391b4190540391b4a
Autor:
Dae-Hyun Kim, Bong-Kwan Cho, Su-Hwan Yun, Gi-Gun Lee, Jae-Hee Kim, Youngchul Kim, Soon-Eung Park, Hyuk-Jin Yoon
Publikováno v:
Applied Sciences
Volume 10
Issue 10
Applied Sciences, Vol 10, Iss 3495, p 3495 (2020)
Volume 10
Issue 10
Applied Sciences, Vol 10, Iss 3495, p 3495 (2020)
Imaging devices attached to unmanned aerial vehicles (UAVs) are used for crack measurements of railway bridges constructed for high-speed trains. This research aims to investigate track-side wind induced by high-speed trains and its effect on UAV thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec6d053d3c7d6ef6706896f8eaf2d46b
Autor:
Su-Hwan Yun, Min-ho Kwak
Publikováno v:
Journal of the Korean Society for Railway. 21:142-151
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::220f698b07d68443e1ec7e7e1e2737fe
https://doi.org/10.7782/jksr.2018.21.2.142
https://doi.org/10.7782/jksr.2018.21.2.142
Publikováno v:
Journal of the Korean society for railway. 18:513-521
When a GTX travels through a deep-level underground tunnel at a speed of 180km/h, ear-discomfort in passengers due to the pressure wave generated could be an issue due to the small cross-sectional area. Therefore, appropriate pressure-tightness value
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8b46e391c5078b1ef0cbad8f4e84b9b
https://doi.org/10.7782/jksr.2015.18.6.513
https://doi.org/10.7782/jksr.2015.18.6.513
Publikováno v:
Journal of the Korean society for railway. 18:8-14
This paper describes a prediction method for micro-pressure wave emitted from a tunnel on the Kyung-bu high-speed railway. Pressure and micro-pressure wave were measured simultaneously to obtain some constants for the prediction method. The change of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58a327875cf767223c06adc2e4813433
https://doi.org/10.7782/jksr.2015.18.1.8
https://doi.org/10.7782/jksr.2015.18.1.8
Publikováno v:
Journal of the Computational Structural Engineering Institute of Korea. 28:177-185
Recently, to realize sound-absorbing structures, we have to insert sound-absorbing materials into wall. These shapes are taken limitations because sound-absorbing materials should be fixed. Therefore, the sound absorption is changed by environment th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c64ec3e9ec2956123f88c87d7274f39
https://doi.org/10.7734/coseik.2015.28.2.139
https://doi.org/10.7734/coseik.2015.28.2.139
Publikováno v:
Journal of the Korean Society of Propulsion Engineers. 19:25-32
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd281fa6c716bd9bd093de3208037400
https://doi.org/10.6108/kspe.2015.19.1.025
https://doi.org/10.6108/kspe.2015.19.1.025
Publikováno v:
Journal of Mechanical Science and Technology. 27:3733-3743
For a high-speed train, the same power car is used as the first car and as the last car in a reverse direction simultaneously. Therefore, the previously optimized nose shape, considering only the first car position, is not well adopted in the last ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aad277dcc257f355a35dba0b9fca22fd
https://doi.org/10.1007/s12206-013-0918-9
https://doi.org/10.1007/s12206-013-0918-9
Publikováno v:
Transactions of the Korean Society for Noise and Vibration Engineering. 23:431-437
Measured acoustic signal from operating high speed train contains frequency change called doppler shift due to its motion. To avoid this doppler shift wind tunnel test is required. But scaledown of model can cause change of source characteristics. An
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c74ea908eda2b0600890985669c7160
https://doi.org/10.5050/ksnve.2013.23.5.431
https://doi.org/10.5050/ksnve.2013.23.5.431
Publikováno v:
Journal of the Korean society for railway. 15:436-441
Pressure waves are generated and propagate in tunnel when train enters a tunnel with high speed. Compression wave due to the entry of train head propagates along the tunnel and is reflected at tunnel exit as expansion wave. While expansion wave due t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4b264c118152bcdaaf0d80c3926757e
https://doi.org/10.7782/jksr.2012.15.5.436
https://doi.org/10.7782/jksr.2012.15.5.436