The effect of notches on the strength of coir – reinforced cashew nut shell resin composite
Table Of Contents
- Certification – – – – – – – – i Dedication – – – – – – – ii Acknowledgment – – – – – – iii Abstract – – – – – – – iv Table of Contents – – – – – – v List of tables – – – – – – – vi List of figure – – – – – – – vii
- 1.0Introduction – – – – – – 1
- 2.0Literature Review – – – – – 4
- 3.0Materials, Equipment and methods – – 15
- 4.0Results – – – – – – – 32
- 5.0Discussion of Results – – – – 37
- 6.0Conclusions and Recommendations – – 42 References – – – – – – – 44 7 LIST OF TABLES Table
- 4.1– – – – – 32 Table
- 4.2– – – – – 33 Table4.3 – – – – – 33 Table4.4 – – – – – 34 Table
- 4.5– – – – – 34 Table
- 4.6– – – – – 35 Table4.7 – – – – – 35 Table
- 4.8– – – – – 36 Table
- 4.9– – – – – 36
Thesis Abstract
The effect of notches on the strength of Coir – reinforced cashew
nut shell resin composite was investigated. Composite laminates
with six different fibre contents (0,0,1, 0.2, 0.3, 0.4 and 0.5 volume
fractions) were fabricated using the hand lay – up moulding
method. A static fracture testing equipment was designed and
fabricated in the absence of a functional fracture testing machine.
Static fracture tests were performed on the notched composites
with different notch depths and locations. The 0.4 volume fraction
of the fibre was determined as the optimum level of fibre necessary
for reinforcing the composites for maximum strength. The fracture
strength of the composite increased with decreasing notch depth.
The strength of the laminates also increased with the notch
locations. Again, varying both notch depths and locations had no
effect initially on the strength of the composite.
Thesis Overview
<p> 1.0 INTRODUCTION<br>Natural fibre is commonly regarded as waste and is disposed<br>by burning or on landfills and this practice contributes to pollution.<br>In order to preserve the environment, it is necessary to find<br>economically feasible solutions to natural fibre as recyclable<br>materials which could be used for different applications, ranging<br>from handicrafts to reinforcement elements for composite<br>materials (Sukumaran, et al, 1982).<br>Coconut palm tree (coco nucifera) is a multivalent fibre<br>producer. Its fibre can be extracted from any part of the leaves, the<br>long leaf sheath, the midribs of the leaves, the balk of the stalk and<br>the fruit crust. Coir fibres are extracted from both the exocarp and<br>the endocarp of the fruit. These coir fibres are currently being used<br>in the form of mats in applications such as substrates for<br>ornamental plants, soil support and seat cushion for automobiles.<br>Since the application of natural fibres is of current interest<br>around the world and a commercial potential market already exists,<br>10<br>the present work investigates the effect of notches on the strength<br>of coir-reinforced cashew nut shell resin composite.<br>1.1 RELEVANCE OF THE RESEARCH<br>The fibre from the coconut fruit crust that is nowadays<br>disposed as an unwanted waste is a recyclable potential alternative<br>to be used in polymeric matrix composite materials like ceiling<br>boards or gypsum panels.<br>The effect of notches on the strength of the composite is<br>critical to its application in engineering systems and this is the<br>primary aim of this study.<br>Therefore, the objectives of this study are:<br>1. To determine the effect of notch depths and locations on the<br>strength of the composite.<br>2. To determine the optimum level of fibre necessary for<br>reinforcing the composite. <br></p>Blazingprojects Mobile App
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