Department of Mechanical engineering

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    Development and validation of drivers for barriers to and stakeholders of green manufacturing
    (2013) Mittal, Varinder Kumar
    Manufacturing firmsconsumelarge amount of energy and natural resources in highly unsustainable manner and release huge amounts of green house gases leading to many economic environmental and social problems from climate change to local waste disposal This has lead to a new manufacturing paradigm of green manufacturingGMThere are various drivers for barriers to and stakeholders of green manufacturing which play a vital role in its implementation These drivers barriers and stakeholders are to be understood properly and analyzed for relationships among them Thisis expected to provide government and industry insights to prioritize the policies and focus to leverage basic drivers and to mitigate root barriers for effective implementation of GM This thesis aims at identifying the driversfor barriersto and stakeholdersofGM developing a model of these drivers barriers and stakeholders using statistical analysis and testing the model using structural equation modelling technique The identification rankingand validation of the modelsof drivers barriers and stakeholdersis expected to provide better knowledge to decision makers in government to develop policies and prioritize them to facilitate green manufacturing adoption and diffusionTheranking and hierarchyof drivers and barrierswill provide better knowledge to the top management in industry to develop and prioritize their business strategies to facilitate smooth implementation of green manufacturing In addition the interrelationship among driversbarriersand their driverdriven relationship is expected to provide the managersexecutives the better understanding of the complex relations to develop effective implementation planThe comparison of driversbarriers among the Indian and German industries will help industry and government in both the countries to learn from each other.
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    Bayesian Inference in Anisotropic Cosmological Models
    (BITS, Pilani, 2020) Sharma, Shivani
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    Application of Conjoint Analysis to the Fuzzy Front End of a Product Design A Case Study of the Indian Auto Industry
    (BITS Pilani, 2013) Thomas, Joseph
    New products that deliver added consumer value contribute significantly newlineto the success of companies In the numerous studies of new product performance newlineover the years consensus has been developed that the understanding of consumer newlineneeds is of paramount strategic value especially in the early stages of the product newlinedevelopment process During these early stages the product has not yet been newlinespecified and the aim is to search for novel product ideas from a marketing and newlinetechnological perspective Despite their importance several studies indicate that newlineconsumer research methodologies are underutilised in the early stages of new newlineproduct development The aim of this thesis is to analyse key issues and newlinedevelop and illustrate appropriate use of consumer research methodology at early newlinestages of the new product development process as the most distinguishing newlinecharacteristic of a successful product development project newlineConsumer research can be confirmative in its focus of testing new product newlineconcepts before launch and in this way prevents unjustified investments Consumer newlineresearch can also be proactive in that it aims to identify new product ideas that newlinedeliver against consumer needs that are not yet fulfilled by products currently newlinein the market Successful new product development requires a balance between newlineboth types of consumer research The research in this thesis focuses on evaluating newlinethe most desirable consumer research tool so that the VoC Voice of the customer newlineis appropriately and completely captured and translated into the VoD Voice of the newlineDesigner early in the product design stage Conjoint Analysis is hitherto used in newlineiv newlinesocial science studies for assessing behaviours Conjoint analysis as the name newlineindicates CONsiders all the attributes JOINTly in a statistical manner Quality newlineFunction Deployment QFD is a planning tool developed by engineers It is used to newlineassure that the voice of the customer is heard all the way throughout a company in newlineorder to manufacture products with high customer satisfaction.
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    Development and Validation of Performance Measures for World Class Manufacturing
    (BITS Pilani, 2006) Digalwar, Abhijeet Keshaorao
    Global competition, rapidly changing technologies and shorter product life cycles have contributed in making the current manufacturing environment extremely competitive and uncertain. Customers are demanding a greater variety of high quality, low cost goods and services. Organizations must consequently develop new methods and perspectives to meet these market needs in a timely and cost effective manner. Traditional manufacturing approaches are no longer sufficient competitive weapons by themselves. Creating a world class organization is one response to deal with such challenges. An organization, which is world class and possesses a set of different strategic options, can respond effectively to dynamic and volatile environments. In world class manufacturing, the focus is on continuous improvement. Performance measurements should therefore activate continuous improvement. As organizations adopt world class manufacturing (WCM), they need new method of performance measurement to check the continuous improvement. The aim of present study is to develop and validate a comprehensive set of performance measures and their items/variables for world class manufacturing. newlineUsing a thorough synthesis of WCM literature and discussion held with practitioners, sixteen performance measures top management commitment, knowledge management, employee training, innovation and technology, employee empowerment, environmental health and safety, supplier management, production planning and control, quality, flexibility, speed, cost, customer involvement, customer satisfaction, customer services and company growth of world class manufacturing with their items/variables have been developed. newlinexiii newlineA survey instrument is developed to collect the data by using snowball sampling technique from four sectors of Indian manufacturing industry automobile, electronics, engineering and process. Descriptive analysis of the data suggests that the targeted sample was appropriate and the various items/variables developed for the performance measures.
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    quotAn Empirical Investigation of Lean Enterprise in Indian Industryquot
    (BITS Pilani, 2014) Naga Vamsi Krishna Jasti
    In today s world the competition moves so quickly that an organization does not have the newlinecomfort of absorbing some losses before it loses the war in the market. The key to longterm newlinesuccess is being able to do certain things better than your competitors can do. Hence newlinemany companies are in the process of trying to do it right the first time in every process newlineof the business like new product development, supply chain management, marketing and newlinemanufacturing processes also. Traditional manufacturing approaches are no longer efficient newlineto stay in the present global market scenario. In response to this, many organizations have newlinestarted to adopt different philosophies like total quality management, total preventive newlinemaintenance, six sigma and lean enterprise etc., in their business processes to stay in the newlinecompetitive world market. After implementation of such philosophies, these organizations newlinestarted claiming of becoming world-class manufacturers especially in manufacturing newlineprocesses. However, many philosophies have implemented to improve manufacturing newlineprocesses in organizations. Moreover, some organization have started to improve overall newlineorganizational functions, start from product development to customer delivery. Lean newlineenterprise is one of the strategy, which can be useful to improve overall organizational newlineprocesses. It is starts from product development to customer delivery. However, there is no newlineclear consensus among the manufacturers and also the absence of a practical and detailed newlinemodel to follow is an issue of concern to those organizations interested to implement lean newlineenterprise principles especially for Indian manufacturing organizations. Hence, there is a newlineneed for an empirical investigation of lean enterprise in the Indian manufacturing newlineindustries.
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    Slug Annular transition in two phase flow in down sloping pipelines
    (BITS, Pilani, 1974) Singh, Gajendra
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    An Empirical Investigation of Six Sigma Practices in Indian Manufacturing Industry
    (BITS, Pilani, 2015) Reosekar, Ravi Shrikrishna
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    Vibration analysis of perforated plates
    (BITS Pilani, 2015) Dinkar, Mali Kiran
    Plates are used as structural elements in major engineering applications. It is common to see openings in these plated structures for various reasons. For example, openings are needed for electric wiring, water pipes, plumbing etc. In case of the perforated plates, openings are often introduced in the regular array. Industrial applications use both the rectangular and triangular array of the perforations. The existence of large open area can change the mass distribution and stiffness around the opening regions, thus changing the vibration characteristics of the plates. The extent to which the perforations can change the vibration behavior of the plated structures depends on the size, shape, locations, numbers and type of the perforation pattern. Existing literature on free vibration of the perforated plate lacks formulation of the analytical models. Existing studies are more related to the determination of the equivalent material properties and their use in calculation of the fundamental frequency. In this thesis, analytical models are formulated to determine the fundamental frequency of the thin perforated plates. Approximate analytical methods such as the Rayleigh s method, Rayleigh s Ritz method and the Galerkin method are used to formulate the analytical models. For analytical models different aspects are considered for plates with clamped all edges. Analytical models are formulated for the rectangular plates with circular/rectangular/square openings arranged in the regular array. Proposed analytical models are based on the special functions to express the variation of the material properties due to the perforations, negative mass concept for perforation and replacing circular perforation with the equivalent square perforation. Expression for modal constant for fundamental frequency of perforated plate is also determined. To establish this modal constant, experimental vibration data is used. The parameters of interest are the size of the opening, the ratio of the area of full solid plate to that of perforat.