Sathiya Naarayan, S and Dhayanidhi, J and Nagarajappa, B and Vorkady, Y and Chandra, S (2015) Behavior of organic gelatin/phenolic micro balloon composite under compressive loading, static and low velocity impact. Indian Journal of Engineering and Materials Sciences, 22 (6). pp. 618-630. ISSN 09714588
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Abstract
The physical properties like density/porosity, stress-strain behavior and energy absorption of organic gelatin/phenolic micro balloon (PMB) composite is studied with respect to its water content and content of phenolic micro balloon. Quasi static compression tests and low velocity impact (LVI) tests are conducted on the gelatin/PMB composite samples with three different gelatin to water ratios (by weight) 1G:2W, 1G:3W and 1G:4W and four PMB contents 0%, 2.5%, 5% and 10% of the combined gelatin-water weight. The stress-strain behavior of the composite is studied through quasi-static compression tests at different loading rates. Low velocity impact tests are conducted to check the energy absorption of specimens and high speed videos of the impact tests were acquired to analyze the behavior of gelatin/PMB composite. The stress-strain tests show that the stiffness of the composite is dependent on both PMB and water content and that the behavior of composite is strain rate dependent or viscoelastic. The high speed imaging of the LVI tests conform with the energy absorption calculations that gelatin’s energy absorption capability increases with increase in the water content as the lateral spread (and consequently the vertical compression of the composite samples) increases with water content. Further the stiffness of the composite increases with the increase of PMB content and reduction of water content. It is also found that 1G:4W composite with 0% PMB content absorbs the maximum energy and he nce is ideal for energy absorption purpose.
| Item Type: | Article |
|---|---|
| Subjects: | AERONAUTICS > Aeronautics (General) CHEMISTRY AND MATERIALS > Composite Materials CHEMISTRY AND MATERIALS > Inorganic, Organic and Physical Chemistry |
| Depositing User: | Mrs SK Pratibha |
| Date Deposited: | 25 Jun 2018 10:54 |
| Last Modified: | 25 Jun 2018 10:54 |
| URI: | http://nal-ir.nal.res.in/id/eprint/12854 |
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