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Article
Publication date: 11 January 2021

Anand S. Patel and Kaushik M. Patel

This paper aims to develop an initial understanding of the Lean Six Sigma methodology since its inception and examine the few Lean Six Sigma dimensions as a research…

Abstract

Purpose

This paper aims to develop an initial understanding of the Lean Six Sigma methodology since its inception and examine the few Lean Six Sigma dimensions as a research domain through a critical review of the literature.

Design/methodology/approach

The paper is structured in two-part. The first part of the paper attempts to dwell on the evolution of the Lean Philosophy and Six Sigma methodology individually and the emergence of Lean Six Sigma methodology, covered under the Lean Six Sigma: a historical outline section. The second part of the study examines the dimensions associated with Lean Six Sigma such as frameworks, critical success factors, critical failure factors, type of industry, performance metric, year, publisher and journal, based on a total of 223 articles published in 72 reputed journals from the year 2000 to 2019 as a literature review.

Findings

The adoption of Lean Six Sigma, as a continuous improvement methodology, has grown enormously in the manufacturing and few service sectors such as health care and higher education during the past decade. The study revealed that researchers came out with conceptual frameworks for the implementation of Lean Six Sigma, whereas the validation through case studies seems to be lacking. The integration of Lean Six Sigma and other approaches with a focus on sustainability and the environment has emerged as a research field. A few of the most common critical success and failure factors were identified from the articles studied during the study.

Research limitations/implications

This paper may not have included some of the studies due to the inaccessibility and selection criteria followed for the study.

Originality/value

This paper will provide an initial introduction on Lean, Six Sigma and Lean Six Sigma and research insights Lean Six Sigma to beginners such as students, researchers and entry-level professionals.

Details

International Journal of Lean Six Sigma, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-4166

Keywords

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Article
Publication date: 8 August 2016

Mayurkumar Ashwinbhai Makhesana and Kaushik M. Patel

The quality of the surface being machined and tool life are greatly affected by heat generated during machining. Abundant use of cutting fluid leads to higher production…

Abstract

Purpose

The quality of the surface being machined and tool life are greatly affected by heat generated during machining. Abundant use of cutting fluid leads to higher production rates and a threat for environment and worker’s health. Hence, the need is to identify eco-friendly lubricants. The purpose of the current work is to investigate the effects of solid lubricants (boric acid and molybdenum disulphide) mixed with oil during turning of EN-31 using cemented carbide tools. The concentration of solid lubricants in oil is varied to analyze output parameters such as surface roughness, process temperature, power consumption and tool wear.

Design/methodology/approach

EN 31 steel material is machined at various cutting speeds and constant feed and depth of cut to determine the effects of dry, wet and solid lubricant assisted machining.

Findings

Experimental study revealed that the solid lubricants performed better while machining and therefore it may be considered as environment friendly and cost effective way of lubrication as compared to flood cooling.

Research limitations/implications

The work can be extended to identify the effects of solid lubricants on micro hardness and cutting force.

Practical implications

From the findings of the work, solid lubricants may be considered as suitable choice as compared to fluid cooling because it improves process performance without much affecting the environment and worker’s health.

Originality/value

So far the use of solid lubricants in machining is limited. The results of the work will be useful to explore various efficient way to apply solid lubricants.

Details

Industrial Lubrication and Tribology, vol. 68 no. 5
Type: Research Article
ISSN: 0036-8792

Keywords

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Article
Publication date: 11 April 2016

Dhaval B. Shah, Kaushik M. Patel and Ruchik D. Trivedi

The purpose of this paper is to describe a method permitting the creation of a realistic model of spherical roller bearing with the aim of determining contact stress and…

Abstract

Purpose

The purpose of this paper is to describe a method permitting the creation of a realistic model of spherical roller bearing with the aim of determining contact stress and fatigue life based on dynamic loading conditions. The paper also aims to recognize the effect of tolerance values on contact stress and fatigue life. Motion and load transmission in spherical roller bearing occurs within the assembly by elliptical curved contacting surfaces. The stress produced by the transmitted load would be very high because of least contacting area between these surfaces.

Design/methodology/approach

The paper describes a methodology to determine contact stress using analytically as well as finite element method for spherical roller bearing. The comparison for the both each approach for contact stress at different loading condition is carried out. Prediction of fatigue life based on dynamic loading conditions for bearing is also determined using finite element model. The effect on induced contact stress and fatigue life by varying tolerances on inner race dimensions have been found out.

Findings

The paper suggests that the maximum stress produces at the start or end of the contacting arc under static loading condition in spherical roller bearing. The analytical and finite element approach is in good agreement. The fatigue life prediction is useful for selecting loading conditions for various applications of double row spherical roller bearing. Tolerance level at inner ring raceway radius is kept high because of manufacturing constrain of complex curvature geometric shape.

Research limitations/implications

The present approach does not consider dynamic loading conditions for contact stress analysis. Therefore, researchers are encouraged to analyze the effect of wear, lubrication and other tribological aspects on bearing life.

Originality/value

The paper includes determination of contact stress and prediction of fatigue life for spherical roller bearing using analytical as well as finite element approach. The tolerance values at inner race are identified as per manufacturing constraint based on contact stress and fatigue life.

Details

Industrial Lubrication and Tribology, vol. 68 no. 3
Type: Research Article
ISSN: 0036-8792

Keywords

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Article
Publication date: 10 May 2019

Ninh Nguyen, Steven Greenland, Antonio Lobo and Hoang Viet Nguyen

This paper aims to address gaps in the sustainable technology literature by evaluating the demographics of energy efficient appliance consumption in Vietnam. Sustainable…

Abstract

Purpose

This paper aims to address gaps in the sustainable technology literature by evaluating the demographics of energy efficient appliance consumption in Vietnam. Sustainable technologies can reduce greenhouse gas emissions and address environmental problems such as air quality and climate change. Opportunity is the greatest in emerging markets, where population growth has triggered dramatic rises in electricity consumption. However, their adoption of energy efficient appliances has been slow and understanding why is limited.

Design/methodology/approach

Following a literature review, a questionnaire was designed to capture sustainable consumption attitudes and behaviours. In total, 682 interviews were conducted among Vietnamese electrical appliance consumers to investigate the influence of demographics on sustainable technology consumption.

Findings

While many respondents were aware of the sustainable benefits of energy efficient appliances, this did not generally translate into responsible purchase behaviour. Of the demographic variables, education had the strongest relationship with sustainability. Those with higher incomes and more children were also more likely to exhibit sustainable consumption attitudes and behaviours. Gender and age were weaker sustainability predictors.

Originality/value

This study is relevant to a wide range of sustainable technology contexts. The literature shows contrary findings regarding relationships between demographics and sustainable consumption, and the value of demographics to sustainable consumer segmentation and targeted behaviour change campaigns has been contested by some researchers. This research highlights education as the most significant demographic predictor of sustainable consumption and reveals the consistency of this finding with many other studies. The implications of this for promoting future sustainability are discussed.

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Article
Publication date: 3 September 2018

Mihir Patel and Darshak Arunbhai Desai

The purpose of this paper is to capture the status of implementation of Six Sigma in various manufacturing industries and also examine the success of the Six Sigma by…

Abstract

Purpose

The purpose of this paper is to capture the status of implementation of Six Sigma in various manufacturing industries and also examine the success of the Six Sigma by using different performance indicators.

Design/methodology/approach

The methodology of critical review involves the selection and classification of 112 research articles on the implementation of Six Sigma in different manufacturing industries. The selected articles are categorized by the following: articles distribution based on the year of publication, publication database, various journals, contribution of authors, continent, scale of industry, implemented approaches, focused industry, tools and techniques used in phases of Six Sigma methodology, and performance indicators used in Six Sigma implementation. Then after, future scopes of research opportunities are derived based on significant findings.

Findings

The literature revealed that: Very few work was undertaken on the implementation of Six Sigma in various manufacturing industries like ceramic, paper, gems and jewelry, cement, furniture, stone, fertilizer, forging, paper and surface treatment industries. Most of the researchers have considered very few performance indicators to identify the improvement after Six Sigma implementation. But, there is no clue regarding overall improvement in different perspectives after the implementation of Six Sigma. The financial indicators, personnel indicators, process indicators and customer indicators are useful to measure the overall improvement after the implementation of Six Sigma in the manufacturing sector.

Research limitations/implications

The study was carried out on the implementation of Six Sigma methodology in various manufacturing industries, and various performance indicators were identified while implementing the Six Sigma methodology. Case studies pertaining to service industries were not covered here.

Originality/value

Very little research has been carried out to measure the overall success of implementing Six Sigma methodology in manufacturing industries. This paper will provide value to students, researchers and practitioners of Six Sigma by providing insight into the implementation of Six Sigma in manufacturing industries.

Details

International Journal of Quality & Reliability Management, vol. 35 no. 8
Type: Research Article
ISSN: 0265-671X

Keywords

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Article
Publication date: 2 November 2020

Vishal R. Mehta and Mayur P. Sutaria

The purpose of this paper is to evaluate the influence of temperature, load and sliding speed on wear and friction behavior of LM25/SiC composites in as-cast and…

Abstract

Purpose

The purpose of this paper is to evaluate the influence of temperature, load and sliding speed on wear and friction behavior of LM25/SiC composites in as-cast and heat-treated conditions.

Design/methodology/approach

The LM25/SiC aluminum matrix composites (AMCs) were prepared using the stir casting process. The wear tests were carried out using a pin-on-disc setup in dry condition. The three levels of each parameter, i.e. 100, 150 and 200°C operating temperature; 15, 25 and 35 N load; 0.8, 1.6 and 2.4 m/sec sliding speed, were considered for the investigation. ANOVA has been carried out to evaluate the percentage contribution of parameters. Scanning electron microscope analysis of worn surfaces has been carried out to understand the wear mechanism.

Findings

The wear and coefficient of friction (COF) increase with the increase in the temperature, load and sliding speed within a selected range for as-cast as well as heat-treated LM25/SiC AMCs. The mean values of wear and COF in heat-treated samples were found to be lower than as-cast samples for all cases. It was observed that the percentage wear increases significantly as temperature increases in as-cast AMCS. Mild to severe wear transition was observed at 150°C. In heat-treated AMCs, mild wear was observed irrespective of temperature. It was also observed that as the temperature increases, transition of wear mechanism from abrasive to adhesive (including delamination) occurs earlier in as-cast samples as compared to heat-treated samples.

Originality/value

There is a lack of data on combined effect of temperature, load and sliding speed on tribological aspects of as-cast and heat-treated LM25/SiC AMCs, limiting its applications. The present research work has addressed this gap.

Details

World Journal of Engineering, vol. 18 no. 2
Type: Research Article
ISSN: 1708-5284

Keywords

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Book part
Publication date: 14 October 2019

Stanislav Ivanov and Craig Webster

Purpose: The purpose of this chapter is to elaborate on the major conceptual and practical considerations of the use of robots, artificial intelligence and service…

Abstract

Purpose: The purpose of this chapter is to elaborate on the major conceptual and practical considerations of the use of robots, artificial intelligence and service automation (RAISA) in travel, tourism, and hospitality companies (TTH).

Design/methodology/approach: The chapter develops a conceptual framework of the major issues related to the use of RAISA in the travel, tourism and hospitality context.

Findings: The findings indicate that while there is a creeping incursion of RAISA into TTH, there are major concerns that the TTH industry has to consider in regard to automating TTH services.

Practical implications: In a practical sense, the chapter identifies the decisions that TTH industry professionals need to take when dealing with RAISA technologies. Furthermore, the chapter elaborates on the impacts RAISA have on business operations, marketing management, human resources and financial management of TTH companies. The TTH industry has to adjust its practices and communicate with its workforce in ways as not to increase Luddite tendencies and resistance among employees.

Social implications: The analysis shows that there is an upcoming era in which automation of services will be so advanced that wealthy countries may not need to import labour to make up with its own aging workforce, suggesting that RAISA and its further development has the potential for disrupting society and international relations.

Originality/value: This chapter provides a comprehensive review of the issues related to the use of RAISA in the TTH industry, including the drivers of RAISA adoption in tourism, advantages and disadvantages of RAISA technologies compared to human employees, decisions that managers need to take, and the impacts of RAISA on business processes. It shows how macroenvironmental pressures shape the microeconomic decisions to use RAISA in a TTH context.

Details

Robots, Artificial Intelligence, and Service Automation in Travel, Tourism and Hospitality
Type: Book
ISBN: 978-1-78756-688-0

Keywords

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Article
Publication date: 20 April 2012

Darshak A. Desai, Jiju Antony and M.B. Patel

The purpose of this paper is to present the results from an empirical investigation of Six Sigma status in Indian industry, especially to highlight critical success…

Abstract

Purpose

The purpose of this paper is to present the results from an empirical investigation of Six Sigma status in Indian industry, especially to highlight critical success factors (CSFs) of Six Sigma implementation in a developing economy like India.

Design/methodology/approach

The study is based on survey questionnaire suitable for Indian industries. The results of the study are based on descriptive statistics.

Findings

The results of this exploratory empirical study reflect the impact of different CSFs of Six Sigma implementation in different sizes and sectors of Indian industries.

Research limitations/implications

The major constraints of the study were the number of companies surveyed as well as time and budget. Moreover, a detailed impact of different CSFs of Six Sigma implementation in Indian industry by means of semi‐structured interviews could not be executed due to above constraints.

Originality/value

Very little research has been carried out exploring the status of CSFs of Six Sigma implementation in Indian industries. This paper will provide value to academics, researchers and practitioners of Six Sigma by way of providing insight into the CSFs for Six Sigma implementation, especially in Indian industries.

Details

International Journal of Productivity and Performance Management, vol. 61 no. 4
Type: Research Article
ISSN: 1741-0401

Keywords

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Book part
Publication date: 7 January 2019

Nathan T. Dollar

This chapter proposes that efforts to improve our understanding of factors affecting migrant health and longevity in the United States must consider migrants’ labor market…

Abstract

This chapter proposes that efforts to improve our understanding of factors affecting migrant health and longevity in the United States must consider migrants’ labor market incorporation and the structural conditions under which they work. I use public-use death certificate data to examine whether there is a mortality penalty for foreign-born workers in the secondary sector industries of agriculture and construction. I focus on the decade of the 1990s for two contextual and empirical reasons: (1) the decade was characterized by economic restructuring, restrictive immigration policy, increased migration, and dispersion of migrants to new geographic destinations; and (2) the 1990s is an opportunistic decade because 19 states coded the industry and occupation of the decedent during this time. These numerator mortality data and Census denominator data are used to compare all-cause mortality rates between working-age (16–64 years) US-born and foreign-born agricultural and construction workers, the overall foreign-born population, and foreign-born workers in health care – an industry where the foreign-born tend to work in well-paid occupations that are well-regulated by the state. The results show a clear mortality penalty for foreign-born workers in agriculture and construction compared to the overall foreign-born population and foreign-born healthcare workers. The results also show the mortality penalty for foreign-born secondary sector workers varies by industry. These findings support the argument that bringing work into our analyses is critical to understanding the contextual and structural factors affecting migrant health and survival.

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Article
Publication date: 18 May 2021

Dilip Kaushik and Ujjal Mukherjee

This paper aims to review the existing body of knowledge on high-performance work systems (HPWS) with a special focus on the recent developments that strengthen its…

Abstract

Purpose

This paper aims to review the existing body of knowledge on high-performance work systems (HPWS) with a special focus on the recent developments that strengthen its prevalence. Considering the current business ecosystem, the author proposes two more characteristics of HPWS which will add value to the literature. It also aims to propose several gaps in the literature considering the role of HPWS in the organization.

Design/methodology/approach

This paper uses a systematic literature review methodology to strengthen the concept, its connection with people and organization, theoretical underpinnings and intervening mechanisms that have not received much attention. The information collected from various studies was analyzed thematically and synthesized to assess the existing body of literature. For a better understanding of HPWS, the review is organized under the following subthemes: definition and meaning, conceptualization, technology infusion, relationship with people and organization, theories commonly used and positives and negative consequences of HPWS.

Findings

This study identifies and describes key characteristics of HPWS such as system, synergistic effect, performance and proposes two new characteristics – agility and adoption of technology. Further findings of this study indicate that HPWS has both positive and negative influences on employee outcomes. The positive outcome helps in the development of human capital that provides a competitive advantage to the organization. The study also underlines some negative influences of HPWS on employee behavior due to the misalignment of HR practices. Scope for further research is also provided for future researchers.

Originality/value

The paper adds the recent developments in the area of HPWS literature and proposes research directions for future researchers.

Details

International Journal of Organizational Analysis, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1934-8835

Keywords

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