1. Trang chủ
  2. » Tất cả

Evaluation of bending behavior of flexible pipe using digital image processing

7 3 0
Tài liệu đã được kiểm tra trùng lặp

Đang tải... (xem toàn văn)

THÔNG TIN TÀI LIỆU

Thông tin cơ bản

Định dạng
Số trang 7
Dung lượng 499,81 KB

Nội dung

Evaluation of Bending Behavior of Flexible Pipe Using Digital Image Processing Procedia Engineering 171 ( 2017 ) 1272 – 1278 1877 7058 © 2017 The Authors Published by Elsevier Ltd This is an open acce[.]

Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 171 (2017) 1272 – 1278 (YDOXDWLRQRIEHQGLQJEHKDYLRURIIOH[LEOHSLSHXVLQJGLJLWDOLPDJH SURFHVVLQJ 7DLFKL,ZDPRWRD 6KXQML.DQLHE a Graduate School of Engineering, Hokkaido University, Sapporo, Japan b Faculty of Engineering, Hokkaido University, Sapporo, Japan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© 2017 The Authors Published by Elsevier Ltd This is an open access article under the CC BY-NC-ND license ‹7KH$XWKRUV3XEOLVKHGE\(OVHYLHU/WG (http://creativecommons.org/licenses/by-nc-nd/4.0/) 3HHUUHYLHZXQGHUUHVSRQVLELOLW\RIWKHRUJDQL]LQJFRPPLWWHHRI6&(6&0 Peer-review under responsibility of the organizing committee of SCESCM 2016 Keywords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mail address:WFNN#JPDLOFRP 1877-7058 © 2017 The Authors Published by Elsevier Ltd This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the organizing committee of SCESCM 2016 doi:10.1016/j.proeng.2017.01.422 Taichi Iwamoto and Shunji Kanie / Procedia Engineering 171 (2017) 1272 –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esting apparatus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aichi Iwamoto and Shunji Kanie / Procedia Engineering 171 (2017) 1272 – 1278 )LJ7HVWLQJ$SSDUDWXV   )LJ7HVWLQJ$SSDUDWXV 2.2 Test specimens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utline of the method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aichi Iwamoto and Shunji Kanie / Procedia Engineering 171 (2017) 1272 – 1278    )LJ([DPSOHRI7KH7DUJHW3DWFK )LJ%LQDUL]HG'LJLWDO,PDJH )LJ&DOLEUDWLRQ6KHHW 3.2 Interpolation to determine bending deformation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y ax   bx   cx   dx  e    ax  bx  c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aichi Iwamoto and Shunji Kanie / Procedia Engineering 171 (2017) 1272 – 1278  )LJ5HODWLRQVKLSEHWZHHQORDGLQJSRLQWGLVSODFHPHQWDQGVTXDUH HUURUIRU6*/+/DQG6*/+/ )LJ5HODWLRQVKLSEHWZHHQORDGLQJSRLQWGLVSODFHPHQWDQGVTXDUH HUURUIRU6*/+/DQG6*/6'  7KHQWKHDXWKRUVHYDOXDWHGWKHUHODWLRQVKLSEHWZHHQEHQGLQJPRPHQWDQGFXUYDWXUH)LJXUHVDQGVKRZWKH UHODWLRQVKLS EHWZHHQ EHQGLQJ PRPHQW DQG EHQGLQJ FXUYDWXUH REWDLQHG E\ GLJLWDO LPDJH SURFHVVLQJ IRU 6*/+/ DQG 6*/6' UHVSHFWLYHO\ ,Q WKH H[SHULPHQWV VWUDLQ JDXJHV ZHUH DOVR XVHG WR PHDVXUH WKH EHQGLQJ VWUDLQ 7KH UHODWLRQVKLSVEDVHGRQWKHGDWDREWDLQHGZLWKGLJLWDOLPDJHSURFHVVLQJDQGZLWKVWUDLQJDXJHVDUHLOOXVWUDWHGWRJHWKHU IRU FRPSDULVRQ 'XULQJ HODVWLF GHIRUPDWLRQ XQGHU UHODWLYHO\ ORZ EHQGLQJ PRPHQW QR VLJQLILFDQW GLIIHUHQFH LV REVHUYHG +RZHYHU DV EHQGLQJ PRPHQW LQFUHDVHV WKH UHODWLRQVKLSV EHWZHHQ EHQGLQJ PRPHQW DQG FXUYDWXUH DV PHDVXUHGE\GLJLWDOLPDJHSURFHVVLQJDQGE\VWUDLQJDXJHGLIIHU,QWKHSODVWLFUDQJHRIGHIRUPDWLRQWKHFXUYDWXUH HVWLPDWHGE\WKHVWUDLQJDXJHLVVPDOOHUWKDQWKDWHVWLPDWHGE\GLJLWDOLPDJHSURFHVVLQJ  )LJ5HODWLRQVKLSEHWZHHQEHQGLQJPRPHQWDQGEHQGLQJFXUYDWXUHIRU 6*/+/  )LJ5HODWLRQVKLSEHWZHHQEHQGLQJPRPHQWDQGEHQGLQJ FXUYDWXUHIRU6*/6' 6LQFHWKHVWUDLQJDXJHVZHUHDWWDFKHGDWWKHFHQWHURIWKHSLSHLWZDVLPSRVVLEOHWRHVWLPDWHWKHGLVWULEXWLRQRI EHQGLQJFXUYDWXUHVDORQJWKHORQJLWXGLQDOD[LVRIWKHSLSH2QWKHFRQWUDU\WKHGLVWULEXWLRQRIEHQGLQJFXUYDWXUHE\ WKHGLJLWDOLPDJHSURFHVVLQJLVH[SUHVVHGDVDSDUDEROLFIXQFWLRQEHFDXVHZHXVHGDIRXUWKRUGHUSRO\QRPLDOIRUWKH LQWHUSRODWLRQ )LJXUHV  DQG  GHPRQVWUDWH WKH GLVWULEXWLRQV RI EHQGLQJ FXUYDWXUH IRU 6*/+/ DQG 6*/6' UHVSHFWLYHO\,QWKRVHILJXUHVDYDULDEOHy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aichi Iwamoto and Shunji Kanie / Procedia Engineering 171 (2017) 1272 – 1278 1277 WKH EHQGLQJ FXUYDWXUH QHDU WKH FHQWHU EHFDPH ODUJH 7KH GLIIHUHQFH LQ WKRVH EHKDYLRUV GXULQJ SODVWLF ORDGLQJ GHPRQVWUDWHVWKHHIIHFWRIWKHILOOPDWHULDORQWKHLQFUHDVHLQGXFWLOLW\  )LJ'LVWULEXWLRQRIWKHFXUYDWXUHLQWKHORDGLQJSRLQW GLVSODFHPHQWIRU6*/+/ )LJ'LVWULEXWLRQRIWKHFXUYDWXUHLQWKHORDGLQJSRLQWGLVSODFHPHQW IRU6*/6'  &RQFOXVLRQV ,QWKLVVWXG\ZHREWDLQHGWKHIROORZLQJILQGLQJV (1) Validity of the digital image processing method 7KHDXWKRUVHVWDEOLVKHGDGLJLWDOLPDJHSURFHVVLQJPHWKRGIRUHYDOXDWLRQRIHODVWRSODVWLFEHKDYLRURISLSH7KH H[SHULPHQWDO UHVXOWV ZHUH FRPSDUHG ZLWK WKRVH REWDLQHG E\ D FRQYHQWLRQDO PHWKRG RI VWUDLQ JDXJH PHDVXUHPHQW DQGLWLVFRQILUPHGWKDWWKHSURSRVHGPHWKRGFDQREVHUYHWKHEHKDYLRUDSSURSULDWHO\ (2) Superiority of the digital image processing method :KHUHDV WKH UDQJH RI PHDVXUHPHQW RI VWUDLQ JDXJHV LV OLPLWHG WKH GLJLWDO LPDJH SURFHVVLQJ PHWKRG FDQ FRQVLVWHQWO\ IROORZ WKH EHQGLQJ GHIRUPDWLRQ IURP WKH HODVWLF WR WKH SODVWLF UDQJH ,Q DGGLWLRQ GLJLWDO LPDJH SURFHVVLQJ FDQ HVWLPDWH WKH GLVWULEXWLRQ RI EHQGLQJ FXUYDWXUH DORQJ WKH ORQJLWXGLQDO GLUHFWLRQ E\ WKH XVH RI DQ LQWHUSRODWLRQIXQFWLRQ (3) Effect of fill material on the bending behavior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³7KLQ´6HFWLRQV3URFHHGLQJVRIWKH5R\DO6RFLHW\RI/RQGRQ$OOSS  >@ 6.DQLH06DWR7.RZDWDULDQG6$NDJDZD'HYHORSPHQWRI)OH[LEOHDQG'XFWLOH3LSHLQSLSH)LOOHGZLWK*UDQXODU0DWHULDOIRU&ROG 5HJLRQV+RNNDLGR8QLYHUVLW\27&$5&7,&7(&12/2*@ 6.DQLH6$NDJDZD..LPDQG70LNDPL(VWLPDWLRQ0HWKRGRI)URVW+HDYLQJIRU&KLOOHG*DV3LSHOLQH%XULHGLQ)URVW6XVFHSWLEOH 6RLO&XUUHQW3UDFWLFHVLQ&ROG5HJLRQV(QJLQHHULQJ$6&(&RQIHUHQFH3URFHHGLQJ3URFHHGLQJV 1278 Taichi Iwamoto and Shunji Kanie / Procedia Engineering 171 (2017) 1272 – 1278 >@ 6 DQLH $ +D\DVKL

Ngày đăng: 24/11/2022, 17:56

TỪ KHÓA LIÊN QUAN

TÀI LIỆU CÙNG NGƯỜI DÙNG

TÀI LIỆU LIÊN QUAN