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Article
Publication date: 4 September 2017

Sanjay Mohan Sharma and Ankush Anand

This paper aims to investigate the effect of CaF2 (calcium fluoride) addition as a solid lubricant on the friction and wear behaviour of sintered Fe-Cu-C materials under…

Abstract

Purpose

This paper aims to investigate the effect of CaF2 (calcium fluoride) addition as a solid lubricant on the friction and wear behaviour of sintered Fe-Cu-C materials under different loads.

Design/methodology/approach

In this study, the effects of CaF2 added in varying weight percentages on the friction-wear properties of Fe-2Cu-0.8C alloys are investigated. Five Fe-2Cu-0.8C-based compositions comprising CaF2 in 0, 3, 6, 9 and 12 Wt.% were prepared using the single-stage compaction and sintering technique. Friction coefficient, wear loss, hardness and compressive strength of the specimens were measured. The worn-out surfaces were analysed using a scanning electron microscope. Friction and wear tests were carried out on pin-on-disc machine under dry sliding conditions at room temperature.

Findings

The alloy with 3 Wt.% CaF2 was found to be useful in improving wear and friction properties, whereas higher contents of CaF2 resulted in increased wear and friction. Apart from enhanced tribological properties, a slight decrease in the compressive strength was also observed in the 3-Wt.%-CaF2-added sample. Adhesion and abrasion were the prominent wear types observed during this study.

Originality/value

A new self-lubricating composite is developed where CaF2 is used as a solid lubricant in a Fe-Cu-C-based matrix. CaF2, being a high-temperature lubricant, is tried and tested for friction and wear at room temperature, and the results show that the addition of CaF2 in Fe-Cu-C improved its friction and wear properties. Thus, the developed material can be used for antifriction applications.

Details

Industrial Lubrication and Tribology, vol. 69 no. 5
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 25 October 2021

Prabhat Kumar Rai, Dinesh Rout, D. Satish Kumar, Sanjay Sharma and G. Balachandran

The purpose of the present study is to simulate the industrial hot-dip process of Zn-2.5Wt.%Mg-3 Wt.%Al and Zn-2.5 Wt.%Mg-9 Wt.%Al-0.15 Wt.%Si coatings and to study the…

Abstract

Purpose

The purpose of the present study is to simulate the industrial hot-dip process of Zn-2.5Wt.%Mg-3 Wt.%Al and Zn-2.5 Wt.%Mg-9 Wt.%Al-0.15 Wt.%Si coatings and to study the effect of low and high Al variation on their microstructure, microhardness, adhesion and corrosion behaviour.

Design/methodology/approach

The hot-dip Zn-2.5 Mg-xAl coating simulation on steel substrate was carried out using a hot-dip process simulator. The microstructure of the coatings was characterized using a scanning electron microscope, energy dispersive spectroscopy and X-ray diffraction. The corrosion behaviour of the coatings was studied using a salt spray test in 5% NaCl solution as well as dynamic polarization in 3.5% NaCl solution.

Findings

Microhardness of the developed Zn-2.5 Mg-xAl coatings has been found to be approximately two times higher than that of the conventional galvanized coating. Zn-2.5 Mg-3Al coating has exhibited two times higher corrosion resistance as compared to that of Zn-2.5 Mg-9Al-0.15Si coating because of formation of more homogeneous and defect-free microstructure of the former. The MgZn2 phase has undergone preferential dissolution and provided Mg2+ ions to form a protective film.

Originality/value

The relative corrosion resistance of the two Zn–Al–Mg coatings with different Al content has been studied. The defect formed because of higher Al addition in the coating has been detected, and its effect on corrosion behaviour has been analysed.

Details

Anti-Corrosion Methods and Materials, vol. 69 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 9 May 2016

Sanjay Sharma

The present paper aims to draw an attention towards the inclusion of forecast related costs. Its main purpose is to initiate a new line of research/practice including the…

Abstract

Purpose

The present paper aims to draw an attention towards the inclusion of forecast related costs. Its main purpose is to initiate a new line of research/practice including the forecasting expenditure.

Design/methodology/approach

After a relevant review of supply chain/procurement/production planning related literature, it has been observed that the existing work lacks an explicit inclusion of the cost concerned with forecast. The increased cost of forecasting is expected to enhance the forecasting accuracy. At a higher level, product family is considered for the analysis. However, a basic unit of analysis is always a single item production/procurement situation. Therefore, this situation has been discussed analytically with the use of the fundamental equations and an explicit inclusion of forecasting cost for the first time in the relevant literature. Numerous practical applications have been discussed at strategic and operational level. A framework is also presented for future research in this area.

Findings

A specific contribution of the present paper is an approach towards a unique index for relative forecasting expenditure. The suggested index will be useful for comparison purpose. Also, it can be used as a benchmark that can be improved in future.

Practical implications

The case is explained when cycle time is invariant after discussing the other potential applications. Usefulness of the proposed methodology and the index is discussed for the business organizations operating independently or in the supply chains.

Originality/value

On the basis of the forecast, a production or procurement plan is generated in many of the industrial or business situations. In the context of supply chain/production/inventory management, focus is more on demand forecasting techniques or generation of the forecasts in the existing literature. However, the increased costs concerning forecasts are expected to provide more accurate prediction. Therefore, the originality lies in an inclusion of forecast related costs.

Details

Journal of Modelling in Management, vol. 11 no. 2
Type: Research Article
ISSN: 1746-5664

Keywords

Article
Publication date: 11 February 2019

Sanjay Sharma and Rekha Sharma

India is edging China to become the most populous country by 2028. More than 60 per cent of the current population of India is between 15 and 59 years of age, whereas…

Abstract

Purpose

India is edging China to become the most populous country by 2028. More than 60 per cent of the current population of India is between 15 and 59 years of age, whereas domestically, its relatively youthful profile is seen as the biggest challenge for the government, as India is the largest employable manpower base globally. In the past two decades, the rate of population growth in India has reduced, but the skilled labor force is expected to grow almost 2 per cent annually for the next couple of years. Historically, the Indian economy has been mainly agriculturally based, but, with urbanization, the labor is drifting toward service sectors, and people are increasingly looking to develop their skills in sectors such as hotels, restaurants, airlines, retail and health care. To sustain economic growth, there is an urgent need to develop vocational training programs that address current needs. In spite of all the favorable numbers, the question that must be answered by employers and policymakers remains: Is the available labor being skilled appropriately to be employable? The mushrooming of educational and training institutes in India has imparted professional skills to youth, but industry leaders tend to talk about the unavailability of skilled labor, especially in the culinary skills arena. In a country like India, the labor market tends to alternate between the availability and shortage of skilled labor, and so it seems ironic that on the one hand, there is a shortage of staff and at the same time graduates from various colleges and professional institutes remain unemployed; the reason could be lack of employability skills, especially culinary skills. Given this, the hospitality and tourism industry has emerged as the main driver of the service sector in India; it contributes 6.23 per cent to National GDP and 8.78 per cent of the total employment in India, contributing to significant economic growth. In this context, it is imperative for the government to take appropriate steps in devising strategies to address the problem and also secure successful implementation. This paper aims to analyze the Skill India initiative for the hospitality sector and compare it with the realities on the ground, with particular reference to culinary skills.

Design/methodology/approach

The research reported here was conducted using primary and secondary sources. Industry data were collected through focused groups and roundtable discussions. Online sources, magazines, newspapers and books are referred to as secondary sources, and the data collected are critically analyzed to reach a conclusion.

Findings

There is a significant increase in foreign and domestic tourists, and the subsectors discussed are very closely linked to food, health, traditional cooking, regional and seasonal cuisines. The demand for Indian food and slow cooking is increasing; however, despite various government initiatives, there is no significant improvement in the skill set of the available labor. As food is an important component of all tourism packages, there is a particular need for public–private partnerships to take the Skill India initiative to the next level. That said, academic standards and curriculum must align with international quality frameworks and be in sync with current and future industry demands and benchmarks.

Research limitations/implications

The dependence on the sources available online and their credibility remains the biggest challenge; however, increasing the sample size and more participation from nodal bodies and government officials would have broadened the base of the study.

Originality/value

The research adds value for industry leaders and policymakers at large. Educational institutions, students and hoteliers will find it useful as they attempt to bridge the gap and plan a roadmap according to industry requirements.

Details

Worldwide Hospitality and Tourism Themes, vol. 11 no. 1
Type: Research Article
ISSN: 1755-4217

Keywords

Article
Publication date: 24 July 2019

Gourav Jamwal, Sanjay Sharma and R.K. Awasthi

This paper aims to evaluate the various dynamic performance parameters of hydrodynamic journal bearings. For this, the bearing’s inner surface is textured with…

Abstract

Purpose

This paper aims to evaluate the various dynamic performance parameters of hydrodynamic journal bearings. For this, the bearing’s inner surface is textured with chevron-shaped textures with different texture depths and number of textures in different regions/locations.

Design/methodology/approach

In the present study, the effect of chevron-shaped texture having different values of texture depths, locations and number of textures has been numerically simulated. The dynamic performance characteristics have been calculated by solving the fluid flow governing Reynolds equation using the finite element method, assuming iso-viscous and Newtonian fluid.

Findings

The obtained results indicate that the bearing stability can be improved with the help of surface texture. Among all the investigated texture locations, the maximum increase in stability threshold speed is observed for fully textured distribution. Moreover, for the chevron-shaped texture considered in the present study, the optimum values of texture depth and number of textures have also been determined for maximum bearing stability.

Practical implications

While designing, designers should focus on those optimum values of texture depth, texture location and number of textures which lead to maximum enhancement in bearing stability.

Originality/value

This study is useful in the appropriate selection of chevron-shaped texture parameters on bearing surface for the maximum bearing stability.

Article
Publication date: 20 June 2019

Sanjay Sharma, Gourav Jamwal and R.K. Awasthi

The purpose of this paper is to provide the various steady state parameters of hydrodynamic journal bearings have been determined to get maximum performance enhancement…

Abstract

Purpose

The purpose of this paper is to provide the various steady state parameters of hydrodynamic journal bearings have been determined to get maximum performance enhancement ratio. For this, the bearings inner surface is textured with triangular shape with different texture depths and a number of textures in pressure increasing region. The textured region acts as a lubricant reservoir, which provides additional film-thickness and reduce friction. Therefore, enhance the overall performance of bearing.

Design/methodology/approach

In the present study, the effect of triangular shaped texture on the static performance characteristics of a hydrodynamic journal bearing has been studied. Different values of texture depths and a number of textures have been numerically simulated in pressure developing region. The static performance characteristics have been calculated by solving the fluid flow governing Reynolds equation using the finite element method, assuming iso-viscous Newtonian fluid. The performance enhancement ratio, which is the ratio of load carrying capacity (LCC) to the coefficient of friction (COF) has been calculated from results to finalized optimum design parameters.

Findings

The paper provides numerically obtained results indicate that surface texturing can improve bearing performance if the textured region is placed in the pressure increasing region. Moreover, surface texturing is the most effective at bearing performance enhancement when the bearing operates at lower eccentricity ratios and texture depth. The performance enhancement ratio, which is the ratio of LCC to the COF is found to be a maximum value of 2.198 at texture depth of 1.5, eccentricity ratio of 0.2 and the textured region located in the increasing pressure region.

Research limitations/implications

The present study is based on a numerical based research approach, which has its limitations. So, researchers are encouraged to investigate the same work experimentally.

Practical implications

The paper includes implications to be beneficial for designers for designing better hydrodynamic journal bearings.

Originality/value

For the triangular shaped texture, considered in the present study, the optimum values of texture depth and texture distribution region have also been determined. While designing, designers should focus on those values of texture depth, texture region and a number of textures, which give the maximum value of performance enhancement ratio, which represents maximum LCC at the lowest value of the COF.

Details

Industrial Lubrication and Tribology, vol. 71 no. 9
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 10 October 2016

Sachin Modgil and Sanjay Sharma

The purpose of this paper is to investigate the impact of total productive maintenance (TPM) and total quality management (TQM) practices on operational performance and…

4400

Abstract

Purpose

The purpose of this paper is to investigate the impact of total productive maintenance (TPM) and total quality management (TQM) practices on operational performance and their inter-relationship.

Design/methodology/approach

The present study includes three main constructs, namely, TPM, TQM and operational performance of pharmaceutical industry. Under TPM, four constructs, namely, disciplined maintenance, information tracking, housekeeping and operator involvement has been considered with the help of literature. In TQM, four constructs, namely, quality data and reporting, product innovation, research and development (R&D) management and technology management has been considered. Out of 410 Indian pharmaceutical plants contacted for survey, 254 responses have been used in the study for analysis. The factor analysis, path model and structural equation modeling has been used to analyze the proposed framework. The results for alternate models has been studied, interpreted and reported. Finally the direct and indirect effect of TPM and TQM on operational performance has been tested and checked for proving and disproving the hypotheses.

Findings

TPM practices have a significant impact on plant-level operational performance. When TPM and TQM practices are coming together to achieve operational performance, then TPM is having strong influence on operational performance. TQM is having significant support from TPM to achieve operational performance. TPM impact TQM and TQM in turn helps to achieve operational performance. TPM practices impact significantly R&D, product innovation and technology management, whereas quality data and reporting is the least contributor toward TQM. This may help industry to understand implications of implementation of TPM and TQM to achieve plant-level operational performance. TPM will help to reduce the cost of quality in terms of reduced scrap and less defective products.

Practical implications

The present study provides the useful insights to practicing managers. In literature it has been mentioned that TQM helps in TPM implementation. In practice TPM plays a great role to achieve quality in processes and therefore in products. In turn quality products, with reduced work in process inventory, less defective products and reduced scrap helps to achieve the operational performance at plant level. TPM practices will help the organization to improve the pace of product innovation and improvement in productivity, which is critical to pharmaceutical industry. The continuous monitoring of TPM practices can help organizations to run day to day operations and maintenance requirement of each machine over a specified period of time.

Originality/value

The present study diagnoses the inter-dimensional linkage between TPM, TQM and operational performance. The pharmaceutical industry is complex system of advance equipment’s and processes. After human resources, the health of machines/equipment’s describe the strength of an organization. The machines require the regular maintenance to produce the products with desired specifications. The specifications in medicines and very tight, which can be achieved only if machines/testing equipment’s are updated and maintained regularly. The TPM practices will helps the plants to achieve the operational performance by having quality in processes.

Details

Journal of Quality in Maintenance Engineering, vol. 22 no. 4
Type: Research Article
ISSN: 1355-2511

Keywords

Article
Publication date: 30 June 2022

Arun Bangotra and Sanjay Sharma

This study aims to investigate the impact of surface waviness on the static performance parameters of hydrodynamic journal bearings operating with lubricants containing…

Abstract

Purpose

This study aims to investigate the impact of surface waviness on the static performance parameters of hydrodynamic journal bearings operating with lubricants containing copper oxide (CuO) and cerium oxide (CeO2) nanoparticles.

Design/methodology/approach

The static performance parameters of bearings with surface waviness and the addition of nanoparticles in lubricants were calculated using the nondimensional form of Reynolds equation and finite element method. Static performance parameters are calculated at different waviness numbers in the circumferential, axial and both directions at various wave amplitudes with variable viscosities of lubricants with nanoparticles using the viscosity equation forming a relationship between the relative viscosity, temperature and weight fraction of nanoparticles in lubricant developed from the experimental results.

Findings

The computed results indicate that the impact of waviness on the bearing surface enhances the load capacity, reduces friction coefficient, and is more effective in the circumferential direction than in the axial direction or in both directions. The addition of CuO and CeO2 to the lubricant enhanced its viscosity which further improved the steady-state parameters of the wave bearing.

Research limitations/implications

This study is based on a numerical technique, which has significant limitations, and the simulated results must be tested experimentally.

Practical implications

The current findings will be beneficial for designers to improve the performance of hydrodynamic journal bearings.

Originality/value

The calculated results demonstrate that the combined effect of the surface waviness on bearings and the addition of nanoparticles to lubricants can greatly increase the performance of hydrodynamic journal bearings.

Details

Industrial Lubrication and Tribology, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0036-8792

Keywords

Article
Publication date: 8 August 2016

Sandeep Munjal, Sanjay Sharma and Pallavi Menon

The paper aims to research the current understanding of Slow Food in the Indian hospitality sector and to identify how the industry can embrace the concept and its…

Abstract

Purpose

The paper aims to research the current understanding of Slow Food in the Indian hospitality sector and to identify how the industry can embrace the concept and its sustainability. To begin, underpinnings are considered in relation to traditional, locally produced food for patrons that is actually “farm to fork” in terms of its delivery model as evidenced by backward integration in the supply of key ingredients. The economics of the backward integration is analysed to measure its impact on businesses’ bottom-line in the context of an inflationary economy.

Design/methodology/approach

Existing published literature is reviewed with reference to the “Slow Food movement” from both an international and Indian perspective. Vedatya’s approach to sustainable culinary value chain creation and its applicability for industry adoption with an intent to offer Slow Food on commercial menus is documented and discussed. A round table discussion with key food and beverage leaders is also documented and analysed to establish the current state of awareness and readiness of the sector to offer “Slow Food” through an integrated supply chain in India.

Findings

Slow Food as a concept is new to India; there is a huge shift in many parts of the world towards food that is fresh, traditional and drawn from locally available ingredients. This research shares Vedatya’s experience in developing an integrated value chain that can provide a sustainable Slow Food model for the Indian hospitality and restaurant sector to deploy with a positive impact on profitability too.

Research limitations/implications

There is need for more research to better understand the feasibility of hospitality businesses working on supply chain with backward integration, to offer “Slow Food” to consumers. While there seems to be a demand for traditional food, this paper does not research that aspect; further research is required to ascertain the potential demand for Slow Food in India.

Practical implications

The popularity of Slow Food is global; however, the Indian hospitality sector is yet to warm up to this potential. The customer focus on healthy, traditional, fresh food opens an opportunity to innovate, and businesses that build capacity to offer real farm-to-fork menus can become market leaders and will reap bottom-line benefits through lower input costs because of supply chain integration.

Originality/value

This paper is unique in terms of offering a discussion on the potential of Slow Food as the next realm of culinary innovation in India. It also adds value by sharing the Vedatya experience in terms of developing an integrated supply chain that facilitates the Slow Food offering in a farm-to-fork format. The model can be emulated by commercial hospitality businesses resulting in cost advantages and higher satisfaction levels of customers.

Details

Worldwide Hospitality and Tourism Themes, vol. 8 no. 4
Type: Research Article
ISSN: 1755-4217

Keywords

Article
Publication date: 31 May 2021

Kanika Gupta and Sanjay Sharma

The advent of technology has played a crucial role in changing the landscape of the hospitality sector. One such technology is the adoption and installation of kiosks in…

Abstract

Purpose

The advent of technology has played a crucial role in changing the landscape of the hospitality sector. One such technology is the adoption and installation of kiosks in hotels. While some of the hotels have adopted and installed kiosks for self-services, the other hotels are still not very comfortable with the idea of self-service. This paper aims to explore the possibilities, challenges and issues that hoteliers face while dealing with self-service kiosks, it further investigates the customer’s perspective and its benefits to the end-user.

Design/methodology/approach

This study has assimilated data from hotel managers and executives that have deployed kiosks. This study involved the collection of primary data through structured interviews. Eight different hotels from the UK and India have been compared and analyzed to formulate subcategories to answer the research questions. A total of 200 customers from both the countries were approached to get the primary data; the customers were from the same hotel where the hotel executives and managers were interviewed.

Findings

The customers accepted Kiosks as easy to use, fast to run, fun to operate, but, lacking human interaction and counter language issues were simultaneously discussed. Kiosks have been emerging as self-service technologies in hotels and play a key role in reducing bottlenecks in hotel operations. The technology anxiety and counter service argument is merely a transition phase that will fade away gradually. However, the financial feasibility and the level of adoption depend upon the level of operations and the demographic characteristics of customers.

Research limitations/implications

The dependence of data from the person interviewed and their biases for answers, along with the trust and credibility of the data available online remain the biggest challenge. Increasing the sample size and more participation from different hotels would have made the study even more useful.

Originality/value

The research seeks to eliminate the gap in research by studying both the hotels' and the customers' perspective toward kiosks deployment in hotels. The results of the study would highlight the potential challenges being faced by hotel operations and opportunities they perceive in kiosks installation, therefore the results are very useful for hotels, hoteliers, academicians and students pursuing a career in the hospitality sector.

Details

Worldwide Hospitality and Tourism Themes, vol. 13 no. 2
Type: Research Article
ISSN: 1755-4217

Keywords

1 – 10 of 231