The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure

In this study, the performance of polypropylene honeycomb structure with different thickness, filled and unfilled was investigated. The density of the specimen was measured and subjected to flexural test, indentation test, compression and the low velocity impact test. After each test, the specimen w...

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Main Author:	Ahmad, Mohamad Ibrahim
Format:	Thesis
Language:	English
Published:	2016
Subjects:	T Technology
Online Access:	http://eprints.usm.my/46776/1/The%20Velocity%20Impact%20Response%20Of%20Filled%20And%20Unfilled%20Polypropylene%20Honeycomb%20Core%20Sandwich%20Structure.pdf
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spelling	my-usm-ep.467762021-11-17T03:42:18Z The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure 2016-08-01 Ahmad, Mohamad Ibrahim T Technology TA401-492 Materials of engineering and construction. Mechanics of materials In this study, the performance of polypropylene honeycomb structure with different thickness, filled and unfilled was investigated. The density of the specimen was measured and subjected to flexural test, indentation test, compression and the low velocity impact test. After each test, the specimen was scanned under ultrasonic C-scan to investigate the effect of energy on the honeycomb panel structure. Introducing reinforced material into honeycomb cell increases the density of the panel structure up to 30 - 34% of initial density. Based on the flexural study, the percentage of energy increment for structure to collapse is around 15 to 38 percent for 30 mm core thickness and 6 to 17 percent for 40 mm core thickness. In indentation test, the n value is between 1.52 to 1.87 for 30 mm core thickness and 0.33 to 1.27 for core thickness 40 mm; 1.5 is the value for an acceptant for composite. The stiffness C was found to depend on the plastic collapse strength of the polyurethane foam and the properties of the skin. The value is between (0.90 to 1.56) x106 N/mn. In compression test, reinforced Polypropylene honeycomb filled sandwich structure has better energy absorption characteristic rather than Polypropylene honeycomb unfilled sandwich structure. In low velocity impact test, the reinforced effect increased the energy absorbtion efficienty about 10 to 30 percentage for both 30 mm and 40 mm core thickness. The damage area for all specimens for the Polypropylene honeycomb unfilled sandwich structure much higher compared to reinforce structure. The reinforced material acted to reduce the stress on the facing skin of the honeycomb structure. 2016-08 Thesis http://eprints.usm.my/46776/ http://eprints.usm.my/46776/1/The%20Velocity%20Impact%20Response%20Of%20Filled%20And%20Unfilled%20Polypropylene%20Honeycomb%20Core%20Sandwich%20Structure.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Ahmad, Mohamad Ibrahim The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure
description	In this study, the performance of polypropylene honeycomb structure with different thickness, filled and unfilled was investigated. The density of the specimen was measured and subjected to flexural test, indentation test, compression and the low velocity impact test. After each test, the specimen was scanned under ultrasonic C-scan to investigate the effect of energy on the honeycomb panel structure. Introducing reinforced material into honeycomb cell increases the density of the panel structure up to 30 - 34% of initial density. Based on the flexural study, the percentage of energy increment for structure to collapse is around 15 to 38 percent for 30 mm core thickness and 6 to 17 percent for 40 mm core thickness. In indentation test, the n value is between 1.52 to 1.87 for 30 mm core thickness and 0.33 to 1.27 for core thickness 40 mm; 1.5 is the value for an acceptant for composite. The stiffness C was found to depend on the plastic collapse strength of the polyurethane foam and the properties of the skin. The value is between (0.90 to 1.56) x106 N/mn. In compression test, reinforced Polypropylene honeycomb filled sandwich structure has better energy absorption characteristic rather than Polypropylene honeycomb unfilled sandwich structure. In low velocity impact test, the reinforced effect increased the energy absorbtion efficienty about 10 to 30 percentage for both 30 mm and 40 mm core thickness. The damage area for all specimens for the Polypropylene honeycomb unfilled sandwich structure much higher compared to reinforce structure. The reinforced material acted to reduce the stress on the facing skin of the honeycomb structure.
format	Thesis
qualification_level	Master's degree
author	Ahmad, Mohamad Ibrahim
author_facet	Ahmad, Mohamad Ibrahim
author_sort	Ahmad, Mohamad Ibrahim
title	The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure
title_short	The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure
title_full	The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure
title_fullStr	The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure
title_full_unstemmed	The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure
title_sort	velocity impact response of filled and unfilled polypropylene honeycomb core sandwich structure
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2016
url	http://eprints.usm.my/46776/1/The%20Velocity%20Impact%20Response%20Of%20Filled%20And%20Unfilled%20Polypropylene%20Honeycomb%20Core%20Sandwich%20Structure.pdf
_version_	1747821726791630848

The Velocity Impact Response Of Filled And Unfilled Polypropylene Honeycomb Core Sandwich Structure

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