Browsing by Author "Mishra, Rajesh P"

Now showing 1 - 20 of 38

An AHP model for quantification of benefits of World-class Maintenance Systems
(Inder Science, 2007-01) Mishra, Rajesh P
In recent times, organisations are failing in their attempt to adapt and implement Total Productive Maintenance (TPM). Researchers are attributing these failures to the shortcomings of TPM, which resulted in the development of World-class Maintenance Systems (WMS). Different frameworks have been proposed to define and operate world-class maintenance in the literature. A comparative analysis of frameworks in our earlier study revealed various best practices based on which a new framework for WMS has been proposed. Contemporary organisations willing to adapt WMS find it difficult to initiate such a change, as it requires proper justification to convince top management. Further, to initiate the adaptation of WMS as a policy decision, it is necessary to quantify the benefits of WMS. Hence in this paper, an attempt has been made to demonstrate the application of Analytic Hierarchy Process (AHP) for the quantification of benefits of WMS. This model showed that implementing WMS would result in overall improvement in the performance of an organisation.
An application of reliability centered maintenance using RPN mean and range on conventional lathe machine
(World Scientific, 2016) Mishra, Rajesh P
RCM provides a structured and practical approach for arriving at an acceptable maintenance strategy for each component of a given system. In this paper, a study on reliability centered maintenance (RCM) has been conducted to reduce the total number of failures and its effects on the conventional lathe machine. The risk priority number (RPN) is, one of the key factors in determining the critical ranking of a failure mode of the mechanical equipment but there is a drawback in determining the critical ranking from RPN. There might be more than one failure modes which can share the same RPN number and therefore critical ranking cannot be assigned to those failure modes. Initially, the Severity, Occurrence and Detection rating integrating with failure mode and effect analysis (FMEA) is taken from several experts and then RPN is calculated for each of those experts. Then the criticality of the failure mode of the functionally significant items of conventional lathe machine is judged on the basis of mean RPN value as well as using the range. Overall the risk or criticality level of each failure mode is identified. After that, RCM logic is used for selection of a proper maintenance strategy for each failure mode.
Classification Based Reliability Growth Prediction on Data Generated by Multiple Independent Processes
(Springer, 2014-01) Mishra, Rajesh P
Reliability Growth is a modeling process for product quality characterization over the lifespan for both hardware and software products and has been explained by multiple models like Duane, Crow-AMSAA, Lloyd Lipow etc. Our research proposes a framework for case-based/scenario based model estimation and prediction, by supervised learning of historical data. In this proposed framework, the case base is generated from historical data and Crow Model is applied in a novel sense to extract information from the historically labeled occurrences. With our framework, we draw in a comparative advantage over the traditional predictive modeling using a Crow’s Growth Model.
Clinical Decision-Making: Developing a 4 C Model Using Graph Theoretic Approach
(Redfame, 2020) Mishra, Rajesh P
The purpose of this paper is to propose a graph-theoretic mathematical model to measure how conducive the environment of a hospital is for decision-making. We propose a 4-C model, developed from four interacting factors: confidence, complexity, capability, and customer. In this graph-theoretic model, abstract information regarding the system is represented by the directed edges of a graph (or digraph), which together depict how one factor affects another. The digraph yields a matrix model useful for computer processing. The net effect of different factors and their interdependencies on the hospital's decision-making environment is quantified and a single numerical index is generated. This paper categorizes all the major factors that influence clinical decision-making and attempts to provide a tool to study and measure their interactions with each other. Each factor and each interaction among factors are to be quantified by healthcare experts according to their best judgment of the magnitude of its effect in a local hospital environment. A hospital case study is used to demonstrate how the 4-C model works. The graph-theoretic approach allows for the inclusion of new factors and generation of alternative environments by a combination of both qualitative and quantitative modeling. The 4-C model can be used to create both a database and a simple numerical scale that help a hospital set customized guidelines, ranging from patient admittance procedures to diagnostic and treatment processes, according to its specific situation. Implementing this methodology systematically can allow a hospital to identify factors that will lead to improved decision-making as well as identifying operational factors that present roadblocks
Comparative analysis of traditional and fuzzy FMECA approach for criticality analysis of conventional lathe machine
(Springer, 2020-01) Mishra, Rajesh P
Criticality analysis is a technique for the assessment of criticality rating for every constitutive part. Failure mode effect and criticality analysis (FMECA) are broadly utilized for characterizing, distinguishing and dispensing with potential failures from system, design, or process for the criticality analysis. The determination of the critical ranking of failure modes for criticality analysis is a vital issue of FMECA. The traditional method of FMECA determines the critical ranking of failure modes using the risk priority numbers, which is the product of evaluation criteria like the occurrence, severity and detection of each failure mode but it may not be realistic in some applications. The practical applications reveal that the criticality analysis using traditional FMECA has been considerably criticized for several reasons. In this paper, first, a detailed FMEA to find out the various failure modes of each component of a conventional lathe machine is performed and thereafter, the Fuzzy FMECA approach is used to perform the criticality analysis. A comparative analysis of fuzzy FMECA with traditional FMECA is also done to find out the most superior approach for the criticality analysis. It was concluded that the fuzzy FMECA approach is the most superior approach for the criticality analysis of a system.
Designing of a Framework for the Implementation of RCM Using SWOT Analysis
(COMADEM, 2021) Mishra, Rajesh P
Reliability Centered Maintenance (RCM) has been one of the most recent and successful methodologies in maintenance around the world. With an end goal to accomplish aggregate life cycle management, it is robustly preferred to understand the systematic planning method of maintenance tasks. It is such a systematic approach for the selection of relevant and suitable maintenance strategies. One of the important factors for the implementation of RCM in an organization is the adoption of a suitable framework that provides the required flow of various elements for structured implementation process. In this paper, ten most significant elements are identified from the various elements of existing RCM frameworks based on Strength, Weakness, Opportunity and threats (SWOT) analysis to help with design of a framework for the implementation of RCM. An attempt has been made to design a framework
Development of a Framework for Implementation of World-class Maintenance Systems Using Interpretive Structural Modeling Approach
(Elsevier, 2015) Mishra, Rajesh P
The purpose of this paper is to develop a framework for the implementation of World-class Maintenance Systems (WMS) with the help of Interpretive Structural Modeling (ISM) methodology. In our earlier work, the framework for WMS was proposed, which explained what constitutes WMS. As a follow up paper, an attempt has been made to present a detailed description about how an organization can implement WMS. To accomplish the same, a standard template is provided for describing the implementation of each and every element and their contextual relationships are also described by ISM methodology which shows driving power and dependence of each element. It is believed that such a normative presentation of the framework would benefit the managers in providing proper guidance and direction during implementation of WMS.
DEVELOPMENT OF A FRAMEWORK FOR WORLD-CLASS MAINTENANCE SYSTEMS
(World Scientific, 2006) Mishra, Rajesh P
A world-class maintenance system (WMS) refers to the best practices in maintenance that are followed and adopted by various organizations to transform themselves to be a 'world-class manufacturer'. One of the important factors in developing a 'world-class' maintenance system within an organization is the adoption of a sound framework that provides the necessary conceptual and theoretical details of best practices to be followed, to reach the world-class status. Several authors, consultants and large organizations have proposed different frameworks representing the best practices in maintenance, which seem to have been developed and derived primarily from the context and experience of such large organizations and consultants respectively. A comparative study revealed that most of the frameworks are unique and proposes several unique best practices in maintenance. Hence, in this paper, an attempt has been made to identify such best practices from the existing frameworks and integrate these practices to develop and propose a new framework for world-class maintenance systems.
Development of a Model for Total Productive Maintenance Barriers to Enhance the Life Cycle of Productive Equipment
(Elsevier, 2021) Mishra, Rajesh P
The main intention of the organization is to focused on enhancing its efficiency, life cycle, and productivity by maintaining better delivery time so that customer satisfying can be guaranteed. One way to achieve this intention is by implementing the concept of Total Productive Maintenance (TPM). In this study, barriers faced by Indian manufacturing organizations in the new emerging market had been determined through the questionnaire survey with the help of renowned academician and industrial experts. These barriers had been divided into key areas namely behavioral, organizational, cultural, technological, departmental, operational, and financial barriers. The barriers had positive as well as negative effects on the actual implementation of TPM aligned with life cycle engineering of productive equipment. The study identifies the crucial barriers to TPM employment in Indian manufacturing industries from the literature review and industrial experience. Hence, a unique model was developed for the determination of the driving and dependence power of the barriers to TPM execution to enhance the life cycle of productive equipment using Interpretive Structure Modelling (ISM).
Development of a model of critical failure factors for integrated LSS–AM practices in Indian manufacturing industries: a fuzzy TISM approach
(Springer, 2023-06) Mishra, Rajesh P
The purpose of the present study is to identify the critical failure factors (CFFs) for implementing integrated practices of lean six sigma (LSS) and agile manufacturing (AM) in Indian manufacturing industries and develop a framework that prioritizes the CFFs. Total nine CFFs were identified through a vast review of research articles. A framework of CFFs was developed by the fuzzy-total interpretive structural modeling (TISM) approach with the help of academia and industry experts’ opinions. Fuzzy-MICMAC (Matrice d'Impacts Croisés Multiplication Appliqués à un Classement) analysis was performed to categorise CFFs into four clusters. The findings of the present study suggest that there are nine CFFs to LSS–AM implementation in Indian manufacturing industries. From the fuzzy-TISM model it is revealed that top management commitment and organisational culture change CFFs are major roadblocks to LSS–AM implementation strategy in any organization. Further, this research helps LSS–AM decision-makers and practitioners to prioritize CFFs based on their driving and dependence. Accordingly, they can make strategies to mitigate these CFFs and create a smooth pathway for the LSS–AM implementation process. This in turn can enhance the performance of the organization. This study is one of the pioneer studies of the integration of LSS–AM CFFs, which analyzed the contextual relationship among the CFFs through fuzzy-TISM
Development of Framework for Lean Implementation: An Interpretive Structural Modeling and Interpretive Ranking Process Approach
(SAE, 2021) Mishra, Rajesh P
Today’s explosive condition of the market is compelling the manufacturing organizations to switch from traditional manufacturing (TM) to lean manufacturing (LM) to create a footprint in this competi- tive era. In this article, 16 critical success factors (CSFs) for LM implementation are identifi ed through a vast literature review, the opinion of academicians and industry experts and interpretive structural modeling (ISM) is used to create interrelationships among the identifi ed CSFs, and interpretive ranking process (IRP) rank these CSFs based on dominance with respect to performance dimen- sions. Leadership and management made the foundation of an ISM model while the training and people development have secured the fi rst rank in the IRP model. Implementation of such ISM- and IRP-based models of CSF would give a clear understanding of these CSFs so that LM researchers, decision-makers, managers, and practitioners of LM will use their resources more effi ciently.
Development of maintenance framework for SMEs by an ISM approach
(CRC Press, 2022) Mishra, Rajesh P
The main purpose of the research paper is to develop a new conceptual framework with an analysis of various strategies for SMEs (Small and Medium Enterprises) which helps to expand, contend and to be successful in the global market taking into consideration their characteristics. Paper commences the review on the framework definitions and considers a comparison of its various properties. It presents the need for a framework and defines its importance in SMEs. Various existing frameworks put forth by academicians would then be taken into consideration, and their advantages and disadvantages from the perspective of SMEs would be examined. Various types of approaches are required to analyze the problems, possibilities, and challenges to success in expansion. The framework could be utilized as a conceptual magnifier for critically evaluating the history and results of SMEs' globalization. The arrangement of this research study focused on challenges experienced by various SMEs, which finally influence their performance. Present work is related to the identification of elements/sub-elements which are already available in published literature.
Enablers for Lean Six Sigma and Agile Implementation: An Interpretive Structural Modeling Approach
(Springer, 2020-12) Mishra, Rajesh P
In recent decades, industries are going through a cut-throat competition and unexpected pitfall in growth rates has worsened it. In previous two decades, the synergy of Lean and Six Sigma seems to be a renowned continuous improvement (CI) business strategy in order to reduce the cost, increase the productivity, enhance the product quality in the manufacturing sector. Nowadays, the criteria for order winning are not only the low cost but it includes the availability, variety, best in class quality and customized products. Only the organizations nimble enough to react to the dynamic requirements from customers on every form can keep their foothold in the marketplace. It is the time when industry requires a new strategy in combinations with Lean and Six Sigma methodology, i.e., agile manufacturing (AM). It is the strategy by which the industry can quickly react according to the demands and expectations of its customers. AM, when applied in combination with Lean Six Sigma (LSS), can enable an organization to offer desired products and services quickly to its customers without compromising the quality at an optimum price. In this paper, 18 enablers for LSS and AM implementation are identified through vast literature review, the opinion of industry and academia experts and inter-relationships among the identified enablers are established by interpretive structural modeling (ISM). Implementation of such ISM-based model of enablers would give a clear understanding of these enablers so that researchers, decision makers, managers and practitioners will use their resources more effectively.
Estimation of Production Function and Productivity of Indian Cement Industry
(SSRN, 2012-03) Mishra, Rajesh P
Productivity is referred to as faculty to produce or what a man can accomplish with material and capital under the known state of technology. However, in economics, productivity is understood as ratio of units of output to units of input. Alternatively, productivity means a ratio of actual output to expect resources used. In other words, Productivity means how much and how well one produces from the resources used. If more is produced or better goods are yielded from the same resources, increase in productivity is understood. Although the definition of productivity appears straightforward, for three major reasons it is difficult to deal with (Anderson, T.D., 1996; Fitzsimmons, J.A. and M.J. Fitzsimmons, 1997: Witt, C.A. and S.F. Witt, 1989). First, the outputs are usually expressed in different forms to the inputs. Outputs are often measured in physical terms such as units (e.g. cars produced), tones (of paper), kilowatts (of electricity), or value (Euros) for example. However the inputs are usually physically different and include measures of people (numbers, skills, hours worked or costs) or materials (tones and costs) for example. Second, the ratio by itself tells us little about performance. A ratio of 0.75 is of little value unless it is compared with previous time periods, or a benchmark, or the potential productivity of the operation. Third, many different ratios can be used (both financial and nonfinancial, that can be used to create productivity ratios). The Proposed paper is an attempt to measure the Productivity of Indian Cement Industry through the empirical study for a period of 33 Years starting from 1973-74. ASI data is been used with Price correction at WPI (2001-02) and CPI (2002-03) Bases. The productivity indices like Technological change measured through Elasticity of Substitution amongst core factor inputs like labour and capital, Total factor Productivity based on Solow Model on Technological Progress, Capital Intensity and DEA technique to measure Allocative and Technical Efficiencies with 18 decision making units (18 States) and Total Outputs- ,Net Value Added ,Gross Capital Formation & Income are considered for analysis. 2004-05 ASI data is been used.
Exploration of Impact of Lean Six Sigma and TRIZ in Banking Sector
(Springer, 2021-04) Mishra, Rajesh P
This paper is an effort to explore and identify the scope of improvement in the service sector by utilizing established principles of Theoria Resheneyva Isobretatelskehuh Zadach (TRIZ) combined with Lean Six Sigma methodology. Service sector being the leading sector in 201 economies/countries contributes 63 percent of total global wealth. Banking and financial sector being one of the fastest growing sub‐sectors within the services sector was considered for this research. Lean Six Sigma principles have proven their capability in the manufacturing sector by reducing cost and improving quality. Here we have attempted to apply these principles in the service sector to analyze customer needs and deliver quality solutions in less time. The use case of opening an account in a bank by a customer is considered to measure the impact of TRIZ methodology intertwined with LSS. Hence suggest a process framework to be later extended to other use cases of financial or other service sector industries. It is a potential framework that will help the service sector leaders to increase their service efficiency with reduced cost and increased customer satisfaction.
Identification of Critical Components Using ANP for Implementation of Reliability Centered Maintenance
(Elsevier, 2018) Mishra, Rajesh P
Identification of critical components and their prioritization for implementation of maintenance is an important task in industry. It is also one of the essential step of reliability-centered maintenance. In this paper, an attempt made is being made to find out the key factors associated with the criticality of components. Five major criteria affecting criticality of components i.e. cost, functional dependency, complexity, maintainability, and safety impact were proposed for criticality analysis. In addition, to identify the critical components a hierarchical network is proposed based on analytic network process. The proposed methodology evaluated with a case study on CNC lathe machine. This study can provide a realistic solution to decision-making problems for maintenance planning in prioritizing the critical component for reliability-centered maintenance.
Identification of positive deviance – methodology development
(Inder Science, 2014) Mishra, Rajesh P
Corporate efforts to improve the bottom line traditionally focus on shortcoming and issues. A comprehensive set of analytical tools and methodologies (e.g., lean management, Six Sigma) have been developed and are deployed in attempts to fix identified problems. However, little guidance is available on how to actually come up with improved organisational and process designs. Organisations tend to rely on approaches such as brainstorming that do not lead to consistent and reliable outcomes. It is proposed to benefit from conducting a dedicated study on internal sources for business improvement. This so-called positive deviance approach utilises internal best practices and converts successful, but hidden best practices into widely deployed, corporate practices. The paper develops a methodology to identifying exceptional performers and map their behaviours and activities which made them successful. The objective was to identify practical quick wins which can be implemented through existing account auditing activities.
Impediments to Lean Six Sigma and Agile Implementation: An interpretive structural modeling
(Elsevier, 2020) Mishra, Rajesh P
To remain sustain in the cutthroat rivalry era many organizations are adopting various combination of manufacturing strategies in order to enhance their efficiency, effectiveness and quality. The integration of Lean Six Sigma (LSS) and Agile Manufacturing (AM) are one of the prominent strategies which gives organizations to a competitive edge in this modern ages, but most of organizations fail to implement them, hence to conquer the impediments of implementation, identification and mutual relationship among the impediments are vital. The main aim of this paper is to identify and establish mutual relationship among the impediments to LSS and AM implementation through an interpretive structural modelling (ISM). In this paper total 20 impediments are identified through vast literature review and their mutual relationship has been established with the help of industries and academia expert’s opinion in order to develop ISM framework of impediments. This framework will help the practitioners in developing the strategies to handle these impediments.
Justification of world‐class maintenance systems using analytic hierarchy constant sum method
(Emerald, 2009-03) Mishra, Rajesh P
In recent times, many organizations implementing total productive maintenance (TPM) have been failing in their attempts. Researchers attribute these failures to the shortcomings of TPM and of the implementing organizations. This paper aims to conduct a detailed study in order to understand these shortcomings and seeks to propose various solutions in the form of “best practices”, which leads to the development of world‐class maintenance systems (WMS). However, development of such alterative maintenance systems raises the following question: if an organization is planning to implement and improve their existing maintenance system then how can the manager make a decision between choosing alternative systems such as traditional maintenance systems, TPM and WMS? In the case of TPM or WMS, top management should be involved from the beginning to implement and follow up, as these decisions are complex and involve huge investment in the long term. Before starting implementation, top management should be convinced of the necessary justification, which requires analysis of various qualitative and quantitative factors apart from analyzing various tangible and intangible benefits. In such a situation, the conventional, financial justification techniques alone cannot be used
The Lithium-Ion Battery Recycling Process from a Circular Economy Perspective—A Review and Future Directions
(MDPI, 2023-04) Mishra, Rajesh P
Ever since the introduction of lithium-ion batteries (LIBs) in the 1970s, their demand has increased exponentially with their applications in electric vehicles, smartphones, and energy storage systems. To cope with the increase in demand and the ensuing environmental effects of excessive mining activities and waste production, it becomes crucial to explore ways of manufacturing LIBs from the resources that have already been extracted from nature. It is possible by promoting the re-usage, refurbishing, and recycling of the batteries and their constituent components, rethinking the fundamental design of devices using these batteries, and introducing the circular economy model in the battery industry. This paper through a literature review provides the current state of CE adoption in the lithium-ion battery industry. The review suggests that the focus is mostly on recycling at this moment in the battery industry, and a further understanding of the process is needed to better adapt to other CE practices such as reuse, remanufacture, refurbishment, etc. The paper also provides the steps involved in the recycling process and, through secondary case studies, shows how some of the industries are currently approaching battery recycling. Thus, this paper, through review and secondary cases, helps us to understand the current state of LIB recycling and CE adoption.