A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites
To test the acoustic performance of fiber-reinforced composites for replacing wood, an acoustic vibration test method is developed. For evaluation of the test method, composites are manufactured using hemp and ramie embedded in epoxy, through vacuum-assisted resin infusion molding. The effects of th...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/11/24/12067 |
| _version_ | 1827674218965237760 |
|---|---|
| author | Fanxizi Liu Qiang Gao Hui Guo Chenhong Lang Jinhua Jiang Yiping Qiu |
| author_facet | Fanxizi Liu Qiang Gao Hui Guo Chenhong Lang Jinhua Jiang Yiping Qiu |
| author_sort | Fanxizi Liu |
| collection | DOAJ |
| description | To test the acoustic performance of fiber-reinforced composites for replacing wood, an acoustic vibration test method is developed. For evaluation of the test method, composites are manufactured using hemp and ramie embedded in epoxy, through vacuum-assisted resin infusion molding. The effects of the most important factors, i.e., impulse, relative humidity (RH), and specimen thickness, on the acoustic vibration response of the composites are systematically studied. The magnitudes of the impulses, represented by different masses of the dropping balls, seem to have little influence on the shapes of the acoustic vibration curves, although the intensity of the spectra increases as the impulse increases. The RH influences the spectrum shape significantly due to variation in the Young’s modulus and density of the material upon absorption of moisture. The specimen thickness also greatly affects the testing results. The specific dynamic modulus, acoustic radiation damping coefficient, and acoustic impedance change a little as the impulse magnitude and RH change, but decrease substantially as the specimen thickness increases. The specific dynamic modulus can be linearly correlated with the flexural modulus of a material. |
| first_indexed | 2024-03-10T04:36:29Z |
| format | Article |
| id | doaj.art-3b759745b94a4cfdadb68983e34eaf53 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T04:36:29Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-3b759745b94a4cfdadb68983e34eaf532023-11-23T03:42:43ZengMDPI AGApplied Sciences2076-34172021-12-0111241206710.3390/app112412067A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced CompositesFanxizi Liu0Qiang Gao1Hui Guo2Chenhong Lang3Jinhua Jiang4Yiping Qiu5Department of Technical Textiles, College of Textiles, Donghua University, Shanghai 201620, ChinaDepartment of Technical Textiles, College of Textiles, Donghua University, Shanghai 201620, ChinaDepartment of Vehicle Engineering, School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaDepartment of Textile Engineering, College of Textiles and Apparel, Quanzhou Normal University, Quanzhou 362000, ChinaDepartment of Technical Textiles, College of Textiles, Donghua University, Shanghai 201620, ChinaDepartment of Technical Textiles, College of Textiles, Donghua University, Shanghai 201620, ChinaTo test the acoustic performance of fiber-reinforced composites for replacing wood, an acoustic vibration test method is developed. For evaluation of the test method, composites are manufactured using hemp and ramie embedded in epoxy, through vacuum-assisted resin infusion molding. The effects of the most important factors, i.e., impulse, relative humidity (RH), and specimen thickness, on the acoustic vibration response of the composites are systematically studied. The magnitudes of the impulses, represented by different masses of the dropping balls, seem to have little influence on the shapes of the acoustic vibration curves, although the intensity of the spectra increases as the impulse increases. The RH influences the spectrum shape significantly due to variation in the Young’s modulus and density of the material upon absorption of moisture. The specimen thickness also greatly affects the testing results. The specific dynamic modulus, acoustic radiation damping coefficient, and acoustic impedance change a little as the impulse magnitude and RH change, but decrease substantially as the specimen thickness increases. The specific dynamic modulus can be linearly correlated with the flexural modulus of a material.https://www.mdpi.com/2076-3417/11/24/12067test methodcompositeacoustic propertiesflexural propertiescellulose fibers |
| spellingShingle | Fanxizi Liu Qiang Gao Hui Guo Chenhong Lang Jinhua Jiang Yiping Qiu A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites Applied Sciences test method composite acoustic properties flexural properties cellulose fibers |
| title | A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites |
| title_full | A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites |
| title_fullStr | A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites |
| title_full_unstemmed | A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites |
| title_short | A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites |
| title_sort | test method for acoustic emission properties of natural cellulose fiber reinforced composites |
| topic | test method composite acoustic properties flexural properties cellulose fibers |
| url | https://www.mdpi.com/2076-3417/11/24/12067 |
| work_keys_str_mv | AT fanxiziliu atestmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT qianggao atestmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT huiguo atestmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT chenhonglang atestmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT jinhuajiang atestmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT yipingqiu atestmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT fanxiziliu testmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT qianggao testmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT huiguo testmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT chenhonglang testmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT jinhuajiang testmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites AT yipingqiu testmethodforacousticemissionpropertiesofnaturalcellulosefiberreinforcedcomposites |