THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

A literature review and a case study of sustainable supply chains with a focus on metrics

Additive manufacturing (AM), commonly known as three-dimensional (3D) printing or rapid prototyping, has been introduced since the late 1980s. Although a considerable amount of progress has been made in this field, there is still a lot of research work to be done in order to overcome the various challenges remained. Recently, one of the actively researched areas lies in the additive manufacturing of smart materials and structures. Smart materials are those materials that have the ability to change their shape or properties under the influence of external stimuli. With the introduction of smart materials, the AM-fabricated components are able to alter their shape or properties over time (the 4th dimension) as a response to the applied external stimuli. Hence, this gives rise to a new term called ‘4D printing’ to include the structural reconfiguration over time. In this paper, recent major progresses in 4D printing are reviewed, including 3D printing of enhanced smart nanocomposites, shape memory al...

3D printing of smart materials: A review on recent progresses in 4D printing

Barriers analysis for green supply chain management implementation in Indian industries using analytic hierarchy process

An ISM approach for the barrier analysis in implementing green supply chain management

Owing to ever-increasing scarcity of natural resources and mounting concern in the market for 'green' products and processes, environmental issues are fast emerging as one of the most important subject of management's decisions in manufacturing organisations. Green business practices are not easy to adopt and implement, due to the presence of many barriers. The purpose of this paper is to identify and analyse these barriers. A questionnaire based survey was conducted to rank these barriers. The results of this survey and Interpretive Structural Modelling (ISM) approach have been used to model and analyse key barriers and drive managerial insights.

Modelling the barriers of green supply chain practices: an Indian perspective

The volatile condition of today's market is forcing the manufacturing managers to adapt the flexible manufacturing systems (FMS) to meet the challenges imposed by international competition, ever changing customer demands, rapid delivery to market and advancement in technology. There are certain enablers, which help in the implementation of FMS or in the transition process from traditional manufacturing systems to FMS. The utmost need is to analyse the behaviour of these enablers for their effective utilization in the implementation of FMS. The main objective of this paper is to understand the mutual interaction of these enablers and identify the ‘driving enablers’ (i.e. which influence the other enablers) and the ‘dependent enablers’ (i.e. which are influenced by others). In the present work, these enablers have been identified through the literature, their ranking is done by a questionnaire-based survey and interpretive structural modelling (ISM) approach has been utilized in analysing their mutual inter...

An ISM approach for modelling the enablers of flexible manufacturing system: the case for India

This paper aims at identifying enablers for greening the supply chain of manufacturing organisations. It also seeks to understand their inter-relationships. A questionnaire based survey was conducted to rank these enablers. Using results of this survey and the interpretive structural modelling (ISM), the paper presents a hierarchy based model and the contextual relationships among these enablers. The study indicates that there exists a group of enablers having low dependence and high driving power and are of strategic importance. The proposed model may help top management determine the key variables which they should focus in order to green their supply chains.

Greening the supply chain practices: an Indian perspective of enablers' relationships

NiTi is a shape memory alloy, mostly employed in cardiovascular stents, orthopedic implants, orthodontic wires, micro-electromechanical systems and so on. The effective and net shape machining of NiTi is very critical for excellent response of this material in medical and other applications. The present experimental work on wire electrical discharge machining process identifies the influence of process parameters that affect the cutting rate, dimensional shift and surface roughness while machining of porous nickel–titanium (Ni40Ti60) alloy. Porous Ni40Ti60 alloy was produced in-house using powder metallurgy technique. Response surface methodology–based central composite rotatable design has been used for the planning of experiments on wire electrical discharge machining. Empirical relations have been developed between the process parameters (pulse on-time, pulse off-time, servo voltage and peak current) and response variables. Desirability approach has been used for optimizing the three response variables...

Tilak Raj

Papers

Modelling the barriers of green supply chain practices: an Indian perspective

An ISM approach for modelling the enablers of flexible manufacturing system: the case for India

Greening the supply chain practices: an Indian perspective of enablers' relationships

Parameter optimization and experimental study on wire electrical discharge machining of porous Ni40Ti60 alloy

Modeling and analysis of FMS performance variables by ISM, SEM and GTMA approach