Sound Insulation Characteristics of the Embedded and Co-Cured Composite Damping Structures

2012 ◽  
Vol 487 ◽  
pp. 598-602 ◽  
Author(s):  
Sen Liang ◽  
Zhong Sheng Zhang ◽  
Peng Mi
Keyword(s):  
Composite Material ◽  
Composite Laminates ◽  
Mechanical Characteristics ◽  
Epoxy Composite ◽  
Sound Insulation ◽  
Viscoelastic Damping ◽  
Wave Tube ◽  
Cure Cycle ◽  
Standing Wave Tube ◽  
Insulation Performance

Based on the designable mechanical characteristics of composite structure, a secondary vulcanization method of viscoelastic material is developed to manufacture the experimental specimens of embedded and co-cured composite damping structure (ECCDS). The mid-temperature co-cured process of the composite material embedding viscoelastic damping membrane is explored according to the glass fabric/epoxy composite cure cycle. By using a standing wave tube method, sound insulation performance of the composite damping structure is tested and compared with the composite laminates without the damping layer. The conclusion indicates that ECCDS has a very strong potential to insulate sound.

scholarly journals Analysis Of Mechanical Properties And Free Vibration Response Of Composite Laminates

2011 ◽  
pp. 84-88
Author(s):  
M. Prabhakaran ◽  
C. Sivakandhan
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Composite Material ◽  
Composite Materials ◽  
Free Vibration ◽  
Composite Laminates ◽  
Mechanical Characteristics ◽  
Energy Planning ◽  
The Individual ◽  
Free Vibration Response

The Word composite consisting of two or more distinct materials, having two or more distinct phases with different physical properties are noticeable different from the constituent properties. Of all composite materials the fabric type has evoked the most interest among embedded in matrix materials to form laminated composites. These have been used for centuries and today industrial innovation improved energy planning. Uncertain availability and ever increasing cost have created a greater interest in composites. The engineering importance of a composite material is that two or more distinctly different materials with dissimilar characteristics combine together to form a composite that is either superior or important in some other manner to the properties of the individual materials. Most of the composites have been created to improve combinational of mechanical characteristics such stiffness, wear resistance and mechanical properties.

Sound Insulation Properties of Abandoned Fibers Composites

2013 ◽  
Vol 821-822 ◽  
pp. 1189-1192 ◽  
Author(s):  
Min Zuo ◽  
Li Hua Lv ◽  
Chun Yan Wei ◽  
Yong Zhu Cui ◽  
Xiao Wang
Keyword(s):  
Transmission Loss ◽  
Orthogonal Experiment ◽  
Testing Machine ◽  
Test System ◽  
Sound Insulation ◽  
Wave Tube ◽  
Jute Fibers ◽  
Impact Tester ◽  
Standing Wave Tube ◽  
Combined Impact

In this article, in order to study the sound insulation properties, abandoned cotton and jute fibers were conducted as reinforced materials, TPU and PP were conducted as matrix materials, and double roller mixing and hot pressing molding processes were adopted to prepare composites. Through the L12 (42×13) mixed orthogonal experiment, cotton/TPU, cotton/PP, jute/TPU and jute/PP composites were prepared respectively. Standing wave tube and impedance tube’s sound absorbing and insulation test system which was produced by Beijing Prestige Company were employed to test the sound insulation (transmission loss). And they were used origin software to analyze. Universal mechanical testing machine and Jane suspension combined impact tester were employed to test tensile, bending and impact strength of jute/TPU composites. Results were showed that four kinds of composites had excellent sound insulation properties. And the jute/TPU composite was the most optimal. Under the conditions of thickness in 6 mm and frequency at 6300Hz, transmission loss of jute/TPU composites was up to 30 dB and it had excellent mechanical properties.

scholarly journals Preliminary Investigation of a Flax-Epoxy Composite Material for Orthopaedic Applications

2021 ◽  
Author(s):  
Kamil Shami
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Epoxy Composite ◽  
Preliminary Investigation ◽  
Analysis And Design ◽  
Bone Fixation ◽  
Testing Data ◽  
Manufacturing Testing ◽  
Proper Design ◽  
Sufficient Strength

In this dissertation, a preliminary experimental study was done on a flax-epoxy prepreg to determine its suitability as a composite material for making bone fixation plates. The research involved manufacturing, testing, data analysis, and design and optimizing. The material was found to have sufficient strength and mechanical characteristics similar to those of bone, and could be used for making bone fixation implants with proper design or in combination with other reinforcement fibres. The findings of this research are useful not only for using flax-epoxy composites in designing bone fixation plates but also for orthopaedic implants, such as joint replacement, in general.

Evaluation of Mechanical Properties of Kevlar Fibre Epoxy Composites: An Experimental Study

2018 ◽  
Vol 10 (6) ◽  
Author(s):  
R. Suthan ◽  
V. Jayakumar ◽  
S. Madhu
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Flexural Rigidity ◽  
Epoxy Composite ◽  
Body Armor ◽  
Body Frame ◽  
Kevlar Fiber ◽  
Fiber Reinforced Polymer Composites ◽  
Bus Body ◽  
Manufacturing Applications

Kevlar fiber reinforced polymer composites are rapidly growing in manufacturing applications such bicycle tires and racing sails to body armor, bullet proof vests, military helmets, walking boots etc. Kevlar epoxy composite material using the Kevlar fiber and epoxy resin LY-556 was fabricated with manual hand layup procedure. The mechanical characteristics like tensile, impact strength and flexural rigidity were evaluated. With the results obtained it is found that kevlar epoxy composite provides better mechanical characteristics than aluminum. In this work, the possibility of replacing aluminum with Kevlar reinforced epoxy composite material is investigated for various applications viz. manufacturing of bus body frame, bullet proof vests, automobile body, sports applications, fire proof clothing, military helmets etc. Also, the FE analysis is carried out with MIDAS NFX software to correlate the test results with FEA.

scholarly journals Preliminary Investigation of a Flax-Epoxy Composite Material for Orthopaedic Applications

2021 ◽  
Author(s):  
Kamil Shami
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Epoxy Composite ◽  
Preliminary Investigation ◽  
Analysis And Design ◽  
Bone Fixation ◽  
Testing Data ◽  
Manufacturing Testing ◽  
Proper Design ◽  
Sufficient Strength

In this dissertation, a preliminary experimental study was done on a flax-epoxy prepreg to determine its suitability as a composite material for making bone fixation plates. The research involved manufacturing, testing, data analysis, and design and optimizing. The material was found to have sufficient strength and mechanical characteristics similar to those of bone, and could be used for making bone fixation implants with proper design or in combination with other reinforcement fibres. The findings of this research are useful not only for using flax-epoxy composites in designing bone fixation plates but also for orthopaedic implants, such as joint replacement, in general.

An Analysis of the Sound Insulation for Compound Steel Panel

2012 ◽  
Vol 251 ◽  
pp. 355-359
Author(s):  
Tao Zhang ◽  
Yan Song Wang ◽  
Jie Lei ◽  
Na Chen
Keyword(s):  
Standing Wave ◽  
Sound Insulation ◽  
Wave Tube ◽  
Normal Case ◽  
Steel Panel ◽  
Insulation Materials ◽  
Standing Wave Tube ◽  
Predicted Values ◽  
Case Based

Sound insulation equation of steel panel and other insulation materials of compound panel was deduced in normal case, based on the Wave Transferring theory in this paper. Single steel panel and compound steel panel with a certain thickness were predicted theoretically and then measured in the standing wave tube practically. Compared with the two results, the predicted values were matched with the measured values.

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