Compression Responses of Bio-Cellular Luffa Sponges
Crushing behaviors of luffa sponges were studied through mechanical experiments. Controlled by four-order hierarchical and anisotropic structures, luffa sponges exhibit anisotropic responses along axial, radial, and circumferential directions. The ultra-thin but stiff inner surface layer dominates t...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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North Carolina State University
2015-10-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_8426_An_Compression_Responses_Biocellular_Luffa |
| _version_ | 1818048859671101440 |
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| author | Xiyue An Qianqian Sui Fangfang Sun Zhiyuan Ma Shu Jiang Bing Ji Hualin Fan |
| author_facet | Xiyue An Qianqian Sui Fangfang Sun Zhiyuan Ma Shu Jiang Bing Ji Hualin Fan |
| author_sort | Xiyue An |
| collection | DOAJ |
| description | Crushing behaviors of luffa sponges were studied through mechanical experiments. Controlled by four-order hierarchical and anisotropic structures, luffa sponges exhibit anisotropic responses along axial, radial, and circumferential directions. The ultra-thin but stiff inner surface layer dominates the crushing behavior, endowing the axially compressed luffa cylinder with structural integrity, enhancing the elastic deformation and yielding strength. In radial, circumferential, and lateral compressions, after removing the inner surface layer, luffa sponges are compliant and have large quasi-linear deformation before densification, without a plateau characterized by yielding and deformation. Immersed into water, crushed luffa sponge cylinders recover their geometry completely. However, compression strength is only partially restored. Gradual damage of the inner surface layer in water immersing/drying cycles greatly weakens the compression strength. In the case of removal of the inner surface layer, crushed luffa sponge cylinders completely restore their quasi-linear deformation ability during the water immersing/drying cycles. |
| first_indexed | 2024-12-10T10:28:23Z |
| format | Article |
| id | doaj.art-d8f585b55f6a4aef9e703cc918478861 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 1930-2126 |
| language | English |
| last_indexed | 2024-12-10T10:28:23Z |
| publishDate | 2015-10-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-d8f585b55f6a4aef9e703cc9184788612022-12-22T01:52:39ZengNorth Carolina State UniversityBioResources1930-21261930-21262015-10-011048426843810.15376/biores.10.4.8426-8438Compression Responses of Bio-Cellular Luffa SpongesXiyue An0Qianqian Sui1Fangfang Sun2Zhiyuan Ma3Shu Jiang4Bing Ji5Hualin Fan6College of Mechanics and Materials, Hohai University, Nanjing 210098, China; State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 210098, China; ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 210098, China; ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 210098, China; ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 210098, China; ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 210098, China; ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 210098, China; ChinaCrushing behaviors of luffa sponges were studied through mechanical experiments. Controlled by four-order hierarchical and anisotropic structures, luffa sponges exhibit anisotropic responses along axial, radial, and circumferential directions. The ultra-thin but stiff inner surface layer dominates the crushing behavior, endowing the axially compressed luffa cylinder with structural integrity, enhancing the elastic deformation and yielding strength. In radial, circumferential, and lateral compressions, after removing the inner surface layer, luffa sponges are compliant and have large quasi-linear deformation before densification, without a plateau characterized by yielding and deformation. Immersed into water, crushed luffa sponge cylinders recover their geometry completely. However, compression strength is only partially restored. Gradual damage of the inner surface layer in water immersing/drying cycles greatly weakens the compression strength. In the case of removal of the inner surface layer, crushed luffa sponge cylinders completely restore their quasi-linear deformation ability during the water immersing/drying cycles.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_8426_An_Compression_Responses_Biocellular_LuffaNatural cellular luffa spongeMechanical propertiesMechanical testingHierarchical structure |
| spellingShingle | Xiyue An Qianqian Sui Fangfang Sun Zhiyuan Ma Shu Jiang Bing Ji Hualin Fan Compression Responses of Bio-Cellular Luffa Sponges BioResources Natural cellular luffa sponge Mechanical properties Mechanical testing Hierarchical structure |
| title | Compression Responses of Bio-Cellular Luffa Sponges |
| title_full | Compression Responses of Bio-Cellular Luffa Sponges |
| title_fullStr | Compression Responses of Bio-Cellular Luffa Sponges |
| title_full_unstemmed | Compression Responses of Bio-Cellular Luffa Sponges |
| title_short | Compression Responses of Bio-Cellular Luffa Sponges |
| title_sort | compression responses of bio cellular luffa sponges |
| topic | Natural cellular luffa sponge Mechanical properties Mechanical testing Hierarchical structure |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_8426_An_Compression_Responses_Biocellular_Luffa |
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