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1 – 10 of over 13000Narottam Yadav, Kaliyan Mathiyazhagan and Krishna Kumar
The purpose of this paper is to improve the yield of a particular model of a car windshield, as the organization faces losses due to poor performance and rejection.
Abstract
Purpose
The purpose of this paper is to improve the yield of a particular model of a car windshield, as the organization faces losses due to poor performance and rejection.
Design/methodology/approach
The Six Sigma DMAIC (define, measure, analyze, improve and control) methodology is used to reduce variation and defects in the process. It is a methodology based on data-driven and fact-based analysis to find out the root cause of the problem with the help of statistical analysis. A worst performing model is selected as a case study through the scoping tree. The preprocess, printing, bending and layup process defects are reduced by analyzing the potential causes and hypothesis testing.
Findings
This paper describes Six Sigma methodology in a glass manufacturing industry in India for automotive applications. The overall yield of a car windshield achieved 93.57 percent against the historical yield of 88.4 percent, resulting in saving 50 lacs per annum. Due to no rework or repairing in the glass, low first-time yield causes major losses. Process improvement through focused cross-functional team reduces variation in the process. Six Sigma improves profitability and reduces defects in the automotive glass manufacturing process.
Research limitations/implications
This case study is applied in automotive glass manufacturing industries. For service and healthcare industries, a similar type of study can be performed. Further research on the common type of processor industry would be valuable.
Practical implications
The case study can be used as a problem-solving methodology in manufacturing and service industries. The tools and techniques can be used in other manufacturing processes also. This paper is useful for industries, researchers and academics for understanding Six Sigma methodology and its practical implementation.
Originality/value
This case study is an attempt to solve automobile glass manufacturing problems through DMAIC approach. The paper is a real case study showing benefits of Six Sigma implementation in the manufacturing industry and saving an annual cost of 50 lacs due to rejections in the process.
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Shamsuddin Ahmed and Francis Amagoh
The purpose of this paper is to demonstrate how quality function deployment can be used to improve the quality of tinted glass produced by a glass manufacturing company in…
Abstract
Purpose
The purpose of this paper is to demonstrate how quality function deployment can be used to improve the quality of tinted glass produced by a glass manufacturing company in Kazakhstan.
Design/methodology/approach
Data were collected using a combination of Delphi method, unstructured, and semi‐structured survey. Principal component and Pareto analysis were used to identify the ranking of customer wants needed to improve the acceptability of the product in the market.
Findings
The paper suggests that satisfying all customer needs require the deployment of all the technology and resources available to the company. It illustrates the possible courses of action company management can take based on prevailing market conditions.
Research limitations/implications
The research shows the specific requirements of customers for tinted glass used in industrial settings. From supply chain perspective, downstream customer opinions were used to identify the desired product attributes.
Practical implications
Since no studies to date have been conducted on the glass manufacturing industry in the Central Asian region, this paper could help glass manufacturers in the region to improve their production practices.
Originality/value
The paper is of value to those glass producers interested in the glass manufacturing industry in Central Asia.
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Danna Tang, Yushen Wang, Zheng Li, Yan Li and Liang Hao
The low-temperature sintering of silica glass combined with additive manufacturing (AM) technology has brought a revolutionary change in glass manufacturing. This study aims to…
Abstract
Purpose
The low-temperature sintering of silica glass combined with additive manufacturing (AM) technology has brought a revolutionary change in glass manufacturing. This study aims to carry out in an attempt to achieve precious manufacturing of silicate glassy matrix through the method of slurry extrusion.
Design/methodology/approach
A low-cost slurry extrusion modelling technology is used to extrude silicate glassy matrix inks, composed of silicate glass powder with different amounts of additives. Extrudability of the inks, their printability window and the featuring curves of silicate glassy matrix are investigated. In addition, the properties of the low-temperature sintering green part as a functional part are explored and evaluated from morphology, hardness and colour.
Findings
The results showed that the particle size was mainly distributed from 1.4 µm to 5.3 µm, showing better slurry stability and print continuity. The parameters were set to 8 mm/s, 80% and 0.4 mm, respectively, to achieve better forming of three-dimensional (3D) samples. Besides, the organic binder removal step was concentrated on 200°C–300°C and 590°C–650°C was the fusion bonding temperature of the powder. The hardness values of 10 test samples ranged from 588 HL to 613 HL, which met the requirements of hard stones with super-strong mechanical strength. In addition, the mutual penetration of elements caused by temperature changes may lead to a colourful appearance.
Originality/value
The custom continuous AM technology enables the fabrication of a glass matrix with 3D structural features. The precise positioning technology of the glass matrix is expected to be applied more widely in functional parts.
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Olavi Uusitalo and Toni Mikkola
The purpose of this paper is twofold. First and most importantly, the paper aims to explain how Pilkington is able to revolutionize the flat glass industry. The modified design…
Abstract
Purpose
The purpose of this paper is twofold. First and most importantly, the paper aims to explain how Pilkington is able to revolutionize the flat glass industry. The modified design envelope model is applied to demonstrate the technological competence and especially strategic thinking concerning to understanding of the markets and positioning the product. Second, the paper demonstrates the entrepreneurship within a large‐scale manufacturing firm.
Design/methodology/approach
The paper applies a longitudinal, historical, and contextual approach. The paper uses multiple case study method and multiple data sources. This is done because creation of an innovation does not take place in vacuum, it is context bound.
Findings
The float glass fulfills the requirements of two industries: the plate and sheet glasses. Within both industries, short‐sighted competitors concentrate on technologies applicable only in other industry. Pilkington positions the float glass first clearly in the plate glass industry and after further development introduces the technology to sheet glass industry as a total surprise. Based on the case, the paper argues that positioning should be part of the corporate strategy.
Practical implications
In addition to complex systematic technologies, the example shows that the design envelope model is applicable also for simple non‐assembled products like flat glass. The model is useful for companies to build scenarios for responses if new unexpected innovations will be introduced in its own or related industries.
Originality/value
This paper offers a novel insight to the old but still viable case of dominant design. In addition, the thorough case description allows reader to go deeply into a classic example of process innovation.
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This paper gives a bibliographical review of the finite element methods (FEMs) applied to the analysis of ceramics and glass materials. The bibliography at the end of the paper…
Abstract
This paper gives a bibliographical review of the finite element methods (FEMs) applied to the analysis of ceramics and glass materials. The bibliography at the end of the paper contains references to papers, conference proceedings and theses/dissertations on the subject that were published between 1977‐1998. The following topics are included: ceramics – material and mechanical properties in general, ceramic coatings and joining problems, ceramic composites, ferrites, piezoceramics, ceramic tools and machining, material processing simulations, fracture mechanics and damage, applications of ceramic/composites in engineering; glass – material and mechanical properties in general, glass fiber composites, material processing simulations, fracture mechanics and damage, and applications of glasses in engineering.
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WE have previously alluded in these columns to the creation of what in effect is a new sub‐industry to the aircraft industry—that is, the manufacture of safety glass. Safety glass…
Abstract
WE have previously alluded in these columns to the creation of what in effect is a new sub‐industry to the aircraft industry—that is, the manufacture of safety glass. Safety glass is being used to an increasing extent upon aircraft, although, of course, it is idle to pretend that the demand from the air industry can ever hope to compete with that from the automobile industry.
B. Herod and D. Lusniak‐Wojcicka
Manufacturing of thin film potentiometers involves using very special substrates, usually with complicated shapes and explicit dimensional tolerance. Commonly, such substrates…
Abstract
Manufacturing of thin film potentiometers involves using very special substrates, usually with complicated shapes and explicit dimensional tolerance. Commonly, such substrates should possess holes and recesses for assembling of the terminals as well as for mounting into housing. Particular difficulties are connected with the labour and time consumption necessary for forming of the molten glass, and limited utilisation of the glass substrates for potentiometer bodies. On the other hand, this material is the best one for the thin film elements. To solve these problems with the objective of producing inexpensive glass substrates for potentiometers, different tests were carried out with moulded elements made from glass powder. The aim of this research was the optimisation of a glass frit granulation and composition of the softening agent (plasticiser) as well as a choice of the temperature profile of firing of the moulded pieces to guarantee the precise structure of the substrate, essential for its application in thin film technology.
Ceramic materials and glasses have become important in modern industry as well as in the consumer environment. Heat resistant ceramics are used in the metal forming processes or…
Abstract
Purpose
Ceramic materials and glasses have become important in modern industry as well as in the consumer environment. Heat resistant ceramics are used in the metal forming processes or as welding and brazing fixtures, etc. Ceramic materials are frequently used in industries where a wear and chemical resistance are required criteria (seals, liners, grinding wheels, machining tools, etc.). Electrical, magnetic and optical properties of ceramic materials are important in electrical and electronic industries where these materials are used as sensors and actuators, integrated circuits, piezoelectric transducers, ultrasonic devices, microwave devices, magnetic tapes, and in other applications. A significant amount of literature is available on the finite element modelling (FEM) of ceramics and glass. This paper gives a listing of these published papers and is a continuation of the author's bibliography entitled “Finite element modelling of ceramics and glass” and published in Engineering Computations, Vol. 16, 1999, pp. 510‐71 for the period 1977‐1998.
Design/methodology/approach
The form of the paper is a bibliography. Listed references have been retrieved from the author's database, MAKEBASE. Also Compendex has been checked. The period is 1998‐2004.
Findings
Provides a listing of 1,432 references. The following topics are included: ceramics – material and mechanical properties in general, ceramic coatings and joining problems, ceramic composites, piezoceramics, ceramic tools and machining, material processing simulations, fracture mechanics and damage, applications of ceramic/composites in engineering; glass – material and mechanical properties in general, glass fiber composites, material processing simulations, fracture mechanics and damage, and applications of glasses in engineering.
Originality/value
This paper makes it easy for professionals working with the numerical methods with applications to ceramics and glasses to be up‐to‐date in an effective way.
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Krishnamurthy Ramanathan and Premaratne Samaranayake
The purpose of this paper is to present an Industry 4.0 Readiness Assessment Framework (I4.0RAF) and demonstrate its applicability and practical relevance through a case study of…
Abstract
Purpose
The purpose of this paper is to present an Industry 4.0 Readiness Assessment Framework (I4.0RAF) and demonstrate its applicability and practical relevance through a case study of a large manufacturing firm in an emerging economy.
Design/methodology/approach
The research firstly involved a synthesis of recent literature for the identification of important determinants, and their constituent criteria, for assessing the readiness of a manufacturing firm to transition to an Industry 4.0 setting and structuring them into a readiness assessment framework that can be used as a self-diagnostic tool. The framework was illustrated through a case study. The empirical findings of readiness assessment are validated using semi-structured interviews of senior management of the organization.
Findings
The proposed I4.0RAF was found to be a practically applicable self-diagnostic tool that can be used to assess a firm's readiness to transition to an Industry 4.0 setting with respect to eight important determinants. Cross-functional participation in the assessment helped the organization to determine priorities and interdependencies among the determinants.
Research limitations/implications
The determinants and their constituent criteria can be further streamlined using inputs from practitioners, consultants and academics.
Practical implications
The findings demonstrate the interdependencies between the determinants, help to delineate interventions that can lead to synergistic outcomes and enabls planning to achieve higher levels of Industry 4.0 maturity.
Originality/value
A self-diagnostic tool as a basis for an informed discussion on transitioning to an Industry 4.0 setting is presented and illustrated through a case study in an emerging economy.
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Kanwal Jit Singh, Inderpreet Singh Ahuja and Jatinder Kapoor
This review paper reveals the literature on ultrasonic, chemical-assisted ultrasonic and rotary ultrasonic machining (USM) of glass material. The purpose of this review paper is…
Abstract
Purpose
This review paper reveals the literature on ultrasonic, chemical-assisted ultrasonic and rotary ultrasonic machining (USM) of glass material. The purpose of this review paper is to understand and describe the working principle, mechanism of material removal, experimental investigation, applications and influence of input parameters on machining characteristics. The literature reveals that the ultrasonic machines have been generally preferred for the glass and brittle work materials. Some other non-traditional machining processes may thermally damage the work surface. Through these USM, neither thermal effects nor residual stresses have been generated on the machined surface.
Design/methodology/approach
Various input parameters have the significant role in machine performance characteristics. For the optimization of output response, several input parameters have been critically investigated by the various researcher.
Findings
Some advance types of glasses such as polycarbonate bulletproof glass, acrylic heat-resistant glass and glass-clad polycarbonate bulletproof glass still need some further investigation because these materials have vast applications in automobile, aerospace and space industries.
Originality/value
Review paper will be beneficial for industrial application and the various young researcher. Paper reveals the detail literature review on traditional ultrasonic, chemical assisted ultrasonic and rotary USM of glass and glass composite materials.
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