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Article
Publication date: 7 November 2016

M.P. Jenarthanan, A. Lakshman Prakash and R. Jeyapaul

The paper aims to develop a mathematical model for delamination and surface roughness during end milling by using response surface methodology (RSM) and to determine how the input…

Abstract

Purpose

The paper aims to develop a mathematical model for delamination and surface roughness during end milling by using response surface methodology (RSM) and to determine how the input parameters (cutting speed, depth of cut, helix angle and feed rate) influence the output response (delamination and surface roughness) in machining of hybrid glass fibre reinforced plastic (GFRP; Abaca and Glass) composite using solid carbide end mill cutter.

Design/methodology/approach

Four-factor, three-level Taguchi orthogonal array design in RSM is used to carry out the experimental investigation. The “Design Expert 8.0” is used to analyse the data collected graphically. Analysis of variance is carried out to validate the model and for determining the most significant parameter.

Findings

The feed rate is the cutting parameter which has greater influence on delamination (88.39 per cent), and cutting speed is the cutting parameter which has greater influence on surface roughness (53.42 per cent) for hybrid GFRP composite materials. Both surface roughness and delamination increase as feed rate increases, which means that the composite damage is larger for higher feed rates.

Originality/value

Effect of milling of hybrid GFRP composite on delamination and surface roughness with various helix angles of solid carbide end mill has not been analysed yet using RSM.

Details

Pigment & Resin Technology, vol. 45 no. 6
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 2 May 2017

M.P. Jenarthanan, Raahul Kumar S and Vinoth S

This study aimed to develop a mathematical model for delamination and surface roughness during end milling by using grey relational analysis (GRA) and to determine how the input…

Abstract

Purpose

This study aimed to develop a mathematical model for delamination and surface roughness during end milling by using grey relational analysis (GRA) and to determine how the input parameters (cutting speed, depth of cut, helix angle and feed rate) influence the output response (delamination and surface roughness) in machining of hybrid glass fibre-reinforced plastic (GFRP) (abaca and glass) composite using solid carbide end mill cutter.

Design/methodology/approach

The Four factors, three levels Taguchi orthogonal array design in GRA is used to conduct the experimental investigation. The Shop Vision inspection system is used to measure the width of maximum damage of the machined hybrid GFRP composite. The Shop Handysurf E-35A surface roughness tester is used to measure the surface roughness of the machined hybrid GFRP composite. “Minitab 14” is used to analyse the data collected graphically. Analysis of variance is conducted to validate the model in determining the most significant parameter.

Findings

The GRA is used to predict the input factors influencing the delamination and surface roughness on the machined surfaces of the hybrid GFRP composite at different cutting conditions with the chosen range of 95 per cent confidence intervals. Analysis on the influences of the entire individual input machining parameters on the delamination and surface roughness has been conducted using GRA.

Originality/value

Effect of milling of the hybrid GFRP composite on delamination and surface roughness with various helix angle solid carbide end mill has not been analysed yet using the GRA technique.

Details

Pigment & Resin Technology, vol. 46 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 5 September 2016

M.P. Jenarthanan, A. Lakshman Prakash and R. Jeyapaul

This paper aims to develop a mathematical model for delamination during end milling by using response surface methodology (RSM) and to determine how the input parameters (cutting…

Abstract

Purpose

This paper aims to develop a mathematical model for delamination during end milling by using response surface methodology (RSM) and to determine how the input parameters (cutting speed, depth of cut and feed rate) influence the output response (delamination) in machining of hybrid glass fibre reinforced plastic (GFRP; abaca and glass) composite using solid carbide end mill cutter.

Design/methodology/approach

Three factors, three levels Box–Behnken design in RSM is used to carry out the experimental investigation. Shop microscope Mitutoyo TM-500 is used to measure the width of maximum damage of the machined hybrid GFRP composites. The “Design Expert 8.0” is used to analyse the data collected graphically. Analysis of variance is carried out to validate the model and for determining the most significant parameter.

Findings

The RSM is used to predict the input factors influencing the delamination on the machined surfaces of hybrid GFRP composite at different cutting conditions with the chosen range of 95 per cent confidence intervals. Analysis on the influences of the entire individual input machining parameters on the delamination has been carried out using RSM.

Originality/value

Effect of milling of hybrid GFRP composite on delamination with solid carbide end mill has not been analysed yet using RSM.

Details

Pigment & Resin Technology, vol. 45 no. 5
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 3 May 2016

M.P. Jenarthanan, A. Lakshman Prakash and R. Jeyapaul

This paper aims to develop a mathematical model for analysing surface roughness during end milling by using response surface methodology (RSM) and to determine how the input…

Abstract

Purpose

This paper aims to develop a mathematical model for analysing surface roughness during end milling by using response surface methodology (RSM) and to determine how the input parameters (cutting speed, depth of cut and feed rate) influence the output parameter (surface roughness) in the machining of hybrid glass fibre reinforced plastic (GFRP; Abaca and Glass) composite by using solid carbide end mill cutter.

Design/methodology/approach

Three factors and a three-level Box–Behnken design in RSM were used to carry out the experimental investigation. Handysurf E-35A was used to measure the surface roughness of the machined hybrid GFRP composites. The “Design Expert 8.0” was used to analyse the data collected graphically. Analysis of variance was carried out to validate the model and determine the most significant parameter.

Findings

The response surface model was used to predict the input factors influencing the surface roughness of the machined surfaces of hybrid GFRP composite at different cutting conditions with a chosen range of 95 per cent confidence intervals. Analysis of the influences of the entire individual input machining parameters on the surface roughness carried out using RSM.

Originality/value

The effect of the milling of hybrid GFRP composite on the surface roughness with solid carbide end mill by using RSM has not been analysed yet.

Details

Pigment & Resin Technology, vol. 45 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

Book part
Publication date: 5 June 2023

Figen Balo and Lutfu S. Sua

Composites based on fiber are commonly used in high-performance building materials. The composites mostly use petrochemically derived fibers like polyester and e-glass, due to…

Abstract

Composites based on fiber are commonly used in high-performance building materials. The composites mostly use petrochemically derived fibers like polyester and e-glass, due to their advantageous material features like high stiffness and strength. All the same, these fibers also have important shortcomings related to energy consumption, recyclability, initial processing expense, resulting health hazards, and sustainability. Increasing environmental awareness and new sustainable building technologies are driving the research, development, and usage of “green” building materials, especially the development of biomaterials.

In this chapter, the natural fiber evaluation approach is applied, which covers a diverse set of criteria. Consequently, the comparative assessment of diverse natural fiber types is applied through the use of an expert decision system approach. The best performing fiber choice is made by comparatively evaluating the materials related to green building. The proposed fiber can be used and applied by green building material manufacturing companies in various countries or locations as a reference when selecting the fiber with the best performance.

Details

Pragmatic Engineering and Lifestyle
Type: Book
ISBN: 978-1-80262-997-2

Keywords

Article
Publication date: 21 October 2013

Andrea Santiago

There is a desire to improve economies as a way to solve social inequities while simultaneously addressing the issue of sustainability. Young and Tilley developed a model that…

1001

Abstract

Purpose

There is a desire to improve economies as a way to solve social inequities while simultaneously addressing the issue of sustainability. Young and Tilley developed a model that describes a sustainability entrepreneur. The purpose of this paper is to apply the model in the Philippine setting to determine if there exists a special entrepreneur who looks beyond profit motivations, considers social inequities, and looks towards future generations.

Design/methodology/approach

The paper used the narrative approach in learning more about the motivations and sustainability practices of two Filipino entrepreneurs. The objective was not to compare the practices of both but to match it with the 12 elements of the sustainability entrepreneur model of Young and Tilley.

Findings

The concept of sustainability entrepreneurship is unknown to the two entrepreneurs. Yet, both engaged in sustainable business practices, meant to improve living conditions of marginalized groups. However, while they have actually helped communities to take better control of their livelihood, they have not yet consciously imbibed the element of futurity.

Research limitations/implications

The paper attempts to further the model of Young and Tilley. However, since the measurement of sustainable entrepreneurship is not definitive, the researcher used pseudo-measures.

Practical implications

Informing entrepreneurs of the value of sustainability entrepreneurship, may lead to more for-profit enterprises to consider the effects of their business practices on the future of marginalized group and the environment.

Originality/value

There is no publication yet that has applied the Young and Tilley model. This paper shows that the model may have practical implications for entrepreneurs.

Details

World Journal of Entrepreneurship, Management and Sustainable Development, vol. 9 no. 4
Type: Research Article
ISSN: 2042-5961

Keywords

Book part
Publication date: 31 December 2010

Noralene Uy, Yukiko Takeuchi and Rajib Shaw

Compelling evidence in recent decades confirms that climate change is already happening as demonstrated by increasing mean temperature, changing precipitation patterns, rising sea…

Abstract

Compelling evidence in recent decades confirms that climate change is already happening as demonstrated by increasing mean temperature, changing precipitation patterns, rising sea level, and increasing frequency and growing intensity of extreme weather events in Asia. Regional climate studies have shown and projected that the worse is yet to come. According to the International Strategy for Disaster Reduction (ISDR), Asia registered the highest number of hydrometeorological disasters at 1,532 occurrences in the period 1991–2005 among all regions in the world.

Details

Climate Change Adaptation and Disaster Risk Reduction: An Asian Perspective
Type: Book
ISBN: 978-0-85724-485-7

Article
Publication date: 16 November 2021

M. Balasubramanian, Thozhuvur Govindaraman Loganathan and R. Srimath

The purpose of this study is to understand the behavior of hybrid bio-composites under varied applications.

Abstract

Purpose

The purpose of this study is to understand the behavior of hybrid bio-composites under varied applications.

Design/methodology/approach

Fabrication methods and material characterization of various hybrid bio-composites are analyzed by studying the tensile, impact, flexural and hardness of the same. The natural fiber is a manufactured group of assembly of big or short bundles of fiber to produce one or more layers of flat sheets. The natural fiber-reinforced composite materials offer a wide range of properties that are suitable for many engineering-related fields like aerospace, automotive areas. The main characteristics of natural fiber composites are durability, low cost, low weight, high specific strength and equally good mechanical properties.

Findings

The tensile properties like tensile strength and tensile modulus of flax/hemp/sisal/Coir/Palmyra fiber-reinforced composites are majorly dependent on the chemical treatment and catalyst usage with fiber. The flexural properties of flax/hemp/sisal/coir/Palmyra are greatly dependent on fiber orientation and fiber length. Impact properties of flax/hemp/sisal/coir/Palmyra are depended on the fiber content, composition and orientation of various fibers.

Originality/value

This study is a review of various research work done on the natural fiber bio-composites exhibiting the factors to be considered for specific load conditions.

Details

World Journal of Engineering, vol. 20 no. 3
Type: Research Article
ISSN: 1708-5284

Keywords

Expert briefing
Publication date: 5 February 2024

The massive demonstration, the first of its kind in seven years, is just one of many indications that Tanzania’s political class is shifting into pre-election mode ahead of local…

Details

DOI: 10.1108/OXAN-DB285004

ISSN: 2633-304X

Keywords

Geographic
Topical
Expert briefing
Publication date: 1 December 2023

Although the Inflation Reduction Act (IRA) is already channelling new funds into renewable energy, the US offshore wind sector faces financial challenges that will make Biden’s…

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