Effects of rotational velocity and hold time at folding posture on time-dependent release behavior of creased white-coated paperboard
In this work, a folding experiment was performed to investigate the time-dependent creasing characteristics of white-coated paperboard of 0.3mm thickness. After folding up to the tracking angle of 90° under a specified rotational velocity, the creased part was hold for a chosen short time (0~20s) an...
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2019-01-01
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| Series: | Journal of Advanced Mechanical Design, Systems, and Manufacturing |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jamdsm/13/1/13_2019jamdsm0004/_pdf/-char/en |
| _version_ | 1811292422737494016 |
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| author | Shigeru NAGASAWA Satoshi KANEKO Dai ADACHI |
| author_facet | Shigeru NAGASAWA Satoshi KANEKO Dai ADACHI |
| author_sort | Shigeru NAGASAWA |
| collection | DOAJ |
| description | In this work, a folding experiment was performed to investigate the time-dependent creasing characteristics of white-coated paperboard of 0.3mm thickness. After folding up to the tracking angle of 90° under a specified rotational velocity, the creased part was hold for a chosen short time (0~20s) and the time-dependent release behavior of folding angle was experimentally investigated for the elapsed release time of 10s. When using the paperboard scored with a specified indentation depth, both the hold time of folded posture of creased part and the rotational velocity of fixture were varied. The folding angle of the paperboard was measured by a CCD camera of digital microscope and the bending moment resistance was measured by a load cell of bending test apparatus in the folding experiment. Through the experiment, it was found that the time-dependent release angle consisted of the hold time based intercept part and the creep-recovery based gradient part as a logarithmic function of the elapsed release time. When varying the folding velocity against a fixed unfolding velocity, the unfolded released behavior was isolated by the hold time from the first half folding velocity. Seeing the drop rate of bending moment at the tracking position and the dependency of initial release angle on the rotational velocity, a transient state and quasi-stationary state of bending moment relaxation were revealed. |
| first_indexed | 2024-04-13T04:46:13Z |
| format | Article |
| id | doaj.art-94134cf845a14437ab5c68c708dc7a28 |
| institution | Directory Open Access Journal |
| issn | 1881-3054 |
| language | English |
| last_indexed | 2024-04-13T04:46:13Z |
| publishDate | 2019-01-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Advanced Mechanical Design, Systems, and Manufacturing |
| spelling | doaj.art-94134cf845a14437ab5c68c708dc7a282022-12-22T03:01:51ZengThe Japan Society of Mechanical EngineersJournal of Advanced Mechanical Design, Systems, and Manufacturing1881-30542019-01-01131JAMDSM0004JAMDSM000410.1299/jamdsm.2019jamdsm0004jamdsmEffects of rotational velocity and hold time at folding posture on time-dependent release behavior of creased white-coated paperboardShigeru NAGASAWA0Satoshi KANEKO1Dai ADACHI2Department of Mechanical Engineering, Nagaoka University of TechnologyDepartment of Mechanical Engineering, Nagaoka University of TechnologyDepartment of Mechanical Engineering, Nagaoka University of TechnologyIn this work, a folding experiment was performed to investigate the time-dependent creasing characteristics of white-coated paperboard of 0.3mm thickness. After folding up to the tracking angle of 90° under a specified rotational velocity, the creased part was hold for a chosen short time (0~20s) and the time-dependent release behavior of folding angle was experimentally investigated for the elapsed release time of 10s. When using the paperboard scored with a specified indentation depth, both the hold time of folded posture of creased part and the rotational velocity of fixture were varied. The folding angle of the paperboard was measured by a CCD camera of digital microscope and the bending moment resistance was measured by a load cell of bending test apparatus in the folding experiment. Through the experiment, it was found that the time-dependent release angle consisted of the hold time based intercept part and the creep-recovery based gradient part as a logarithmic function of the elapsed release time. When varying the folding velocity against a fixed unfolding velocity, the unfolded released behavior was isolated by the hold time from the first half folding velocity. Seeing the drop rate of bending moment at the tracking position and the dependency of initial release angle on the rotational velocity, a transient state and quasi-stationary state of bending moment relaxation were revealed.https://www.jstage.jst.go.jp/article/jamdsm/13/1/13_2019jamdsm0004/_pdf/-char/enfoldingshearbending momentcreasingrelaxationcreeppaperboard |
| spellingShingle | Shigeru NAGASAWA Satoshi KANEKO Dai ADACHI Effects of rotational velocity and hold time at folding posture on time-dependent release behavior of creased white-coated paperboard Journal of Advanced Mechanical Design, Systems, and Manufacturing folding shear bending moment creasing relaxation creep paperboard |
| title | Effects of rotational velocity and hold time at folding posture on time-dependent release behavior of creased white-coated paperboard |
| title_full | Effects of rotational velocity and hold time at folding posture on time-dependent release behavior of creased white-coated paperboard |
| title_fullStr | Effects of rotational velocity and hold time at folding posture on time-dependent release behavior of creased white-coated paperboard |
| title_full_unstemmed | Effects of rotational velocity and hold time at folding posture on time-dependent release behavior of creased white-coated paperboard |
| title_short | Effects of rotational velocity and hold time at folding posture on time-dependent release behavior of creased white-coated paperboard |
| title_sort | effects of rotational velocity and hold time at folding posture on time dependent release behavior of creased white coated paperboard |
| topic | folding shear bending moment creasing relaxation creep paperboard |
| url | https://www.jstage.jst.go.jp/article/jamdsm/13/1/13_2019jamdsm0004/_pdf/-char/en |
| work_keys_str_mv | AT shigerunagasawa effectsofrotationalvelocityandholdtimeatfoldingpostureontimedependentreleasebehaviorofcreasedwhitecoatedpaperboard AT satoshikaneko effectsofrotationalvelocityandholdtimeatfoldingpostureontimedependentreleasebehaviorofcreasedwhitecoatedpaperboard AT daiadachi effectsofrotationalvelocityandholdtimeatfoldingpostureontimedependentreleasebehaviorofcreasedwhitecoatedpaperboard |