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Title: Drop impact damage assessment of Glass fibre reinforced polymer Composite through damage Tolerance method using acoustic Emission and ultrasonic techniques
Researcher: Ramasamy P
Guide(s): Sampathkumar S
Keywords: Acoustic Emission Technique
Glass Fibre Reinforced Polymer
Ultrasonic Technique
Upload Date: 10-Apr-2015
University: Anna University
Completed Date: 01/05/2014
Abstract: Composite materials are being used in many industrial applications due newlineto their higher strength to weight ratio as compared to metals In recent years newlineGlass Fibre Reinforced Polymer GFRP has found wide application due to its newlinehigh strength better impact resistance and ease of manufacturing In newlineaerospace and other applications drop weights create invisible damage Drop newlineloads lead to various problems such as matrix crack fibre breakage newlinedelamination fibre pullout etc Therefore a damage assessment method in newlinereal time becomes necessary to take the corrective action needed to avoid newlinemajor accidents In this work an attempt has been made for the investigation newlineof drop impact damage on GFRP composite laminates using the Ultrasonic newlineTechnique UT and Acoustic Emission Technique AET newlineThe drop impact test on the GFRP composite laminate was carried out newlineusing the drop impact apparatus It was found that the area of the drop impact newlinedamage vary with respect to impact energy The drop impact damaged newlinecomposite laminates were scanned by an ultrasonic flaw detector in the newlineA scan mode and the ultrasonic signals were analysed The ultrasonic newlineParameters namely the amplitude the attenuation coefficient and attenuation newlineratio were calculated It was found that the attenuation coefficient increases newlinewith an increase in the area of the impact damage The attenuation coefficient newlineincreases from 0 07 nepers mm to 15 04 nepers mm for the area of impact newlinedamage range of 102 mm2 to 742 mm2 It was also observed that the amplitude newlineand attenuation ratio of the impact damaged composite laminate decrease with newlinean increase in the area of the impact damage newline
Pagination: xxi, 168p.
Appears in Departments:Faculty of Mechanical Engineering

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02_certificate.pdf326.68 kBAdobe PDFView/Open
03_abstrcat.pdf9.36 kBAdobe PDFView/Open
04_acknowledgement.pdf7.03 kBAdobe PDFView/Open
05_content.pdf72.5 kBAdobe PDFView/Open
06_chapter1.pdf120.65 kBAdobe PDFView/Open
07_chapter2.pdf60.4 kBAdobe PDFView/Open
08_chapter3.pdf192.53 kBAdobe PDFView/Open
09_chapter4.pdf214.43 kBAdobe PDFView/Open
10_chapter5.pdf18.67 kBAdobe PDFView/Open
11_chapter6.pdf1.57 MBAdobe PDFView/Open
12_chapter7.pdf475.75 kBAdobe PDFView/Open
13_chapter8.pdf105.71 kBAdobe PDFView/Open
14_chapter9.pdf793.06 kBAdobe PDFView/Open
15_chapter10.pdf167.41 kBAdobe PDFView/Open
16_chapter11.pdf119.94 kBAdobe PDFView/Open
17_chapter12.pdf75.46 kBAdobe PDFView/Open
18_chapter13.pdf41.21 kBAdobe PDFView/Open
19_reference.pdf341.05 kBAdobe PDFView/Open
20_publication.pdf51.52 kBAdobe PDFView/Open

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