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11 – 20 of over 1000Clive Kerr and Paul Ivey
Fundamentally, it is advantageous to operate an aeroengine's thermodynamic cycle at as high a turbine entry temperature as practical for the current metallurgical limits of the…
Abstract
Fundamentally, it is advantageous to operate an aeroengine's thermodynamic cycle at as high a turbine entry temperature as practical for the current metallurgical limits of the turbine blades in order to achieve peak cycle efficiency and thus lower specific fuel consumption. However, achieving the highest possible turbine entry temperature requires accurate knowledge of the turbine blade temperatures for control purposes to prolong component life as frequent excursions beyond the design limits of the blades can severely reduce their service life. The optical pyrometry technique represents the best method for providing this crucial temperature data needed for blade condition‐based monitoring. This paper presents the general operating principles, system aspects and design considerations for the application of the optical pyrometer instrument for inflight service use on gas turbine aeroengines.
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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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Time was when quality control inspectors breathed a different air from their fellow‐workers on the factory floor. Emerging as rarely from their department as priests from a…
Abstract
Time was when quality control inspectors breathed a different air from their fellow‐workers on the factory floor. Emerging as rarely from their department as priests from a temple, they would priest‐like distribute blame and grudging approval to their acolytes.
Alex Mason, Dmytro Romanov, L. Eduardo Cordova-Lopez, Steven Ross and Olga Korostynska
Modern meat processing requires automation and robotisation to remain sustainable and adapt to future challenges, including those brought by global infection events. Automation of…
Abstract
Purpose
Modern meat processing requires automation and robotisation to remain sustainable and adapt to future challenges, including those brought by global infection events. Automation of all or many processes is seen as the way forward, with robots performing various tasks instead of people. Meat cutting is one of these tasks. Smart novel solutions, including smart knives, are required, with the smart knife being able to analyse and predict the meat it cuts. This paper aims to review technologies with the potential to be used as a so-called “smart knife” The criteria for a smart knife are also defined.
Design/methodology/approach
This paper reviews various technologies that can be used, either alone or in combination, for developing a future smart knife for robotic meat cutting, with possibilities for their integration into automatic meat processing. Optical methods, Near Infra-Red spectroscopy, electrical impedance spectroscopy, force sensing and electromagnetic wave-based sensing approaches are assessed against the defined criteria for a smart knife.
Findings
Optical methods are well established for meat quality and composition characterisation but lack speed and robustness for real-time use as part of a cutting tool. Combining these methods with artificial intelligence (AI) could improve the performance. Methods, such as electrical impedance measurements and rapid evaporative ionisation mass spectrometry, are invasive and not suitable in meat processing since they damage the meat. One attractive option is using athermal electromagnetic waves, although no commercially developed solutions exist that are readily adaptable to produce a smart knife with proven functionality, robustness or reliability.
Originality/value
This paper critically reviews and assesses a range of sensing technologies with very specific requirements: to be compatible with robotic assisted cutting in the meat industry. The concept of a smart knife that can benefit from these technologies to provide a real-time “feeling feedback” to the robot is at the centre of the discussion.
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Business opportunities in advanced sensors were highlighted at a seminar sponsored under the DTI Advanced Sensors Technology Transfer Programme.
Progress of the joint Anglo‐American Harrier II programme will be marked in 1985 by the formation of the first US Marine Corps (USMC) operational squadron of AV‐8Bs and the first…
Abstract
Progress of the joint Anglo‐American Harrier II programme will be marked in 1985 by the formation of the first US Marine Corps (USMC) operational squadron of AV‐8Bs and the first flight of the Harrier GR Mk. 5 for the RAF. The latter aircraft will vary slightly from those for the USMC in that they will be equipped to meet the close support role in Central Europe which necessitates the inclusion of a moving map display and two additional underwing weapon stations, as well as other differences.
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Chiew Loon Goh, Ruzairi Abdul Rahim and Mohd Hafiz Fazalul Rahiman
The purpose of this paper is to conduct a review of types of tomographic systems that have been widely researched within the past 10 years. Decades of research on non-invasively…
Abstract
Purpose
The purpose of this paper is to conduct a review of types of tomographic systems that have been widely researched within the past 10 years. Decades of research on non-invasively and non-intrusively visualizing and monitoring gas-liquid multi-phase flow in process plants in making sure that the industrial system has high quality control. Process tomography is a developing measurement technology for industrial flow visualization.
Design/methodology/approach
A review of types of tomographic systems that have been widely researched especially in the application of gas-liquid flow within the past 10 years was conducted. The sensor system operating fundamentals and assessment of each tomography technology are discussed and explained in detail.
Findings
Potential future research on gas-liquid flow in a conducting vessel using ultrasonic tomography sensor system is addressed.
Originality/value
The authors would like to undertake that the above-mentioned manuscript is original, has not been published elsewhere, accepted for publication elsewhere or under editorial review for publication elsewhere and that my Institute’s Universiti Teknologi Malaysia representative is fully aware of this submission.
Lydia Oktarini and Hirotaka Kawano
This paper aims to provide feasible business model options that benefit all stakeholders; the government, the investor and especially the inhabitants in Maluku and Papua, the…
Abstract
Purpose
This paper aims to provide feasible business model options that benefit all stakeholders; the government, the investor and especially the inhabitants in Maluku and Papua, the less-favored business regions in Indonesia.
Design/methodology/approach
Three feasible business model options result from ICT for development literature, current role of the government, other models and investment scheme review, statistical analysis, technology analysis and investment simulations.
Findings
This paper proposes three different feasible business model options. The infrastructure subsidy model, which combines 20 per cent private investment and 80 per cent government subsidy, is the most feasible business model based on investment simulations. This model which combines 20 per cent private investment and 80 per cent government subsidy provides stronger determination of Indonesian Government for serving rural and remote people. The revenue subsidy and the mixed project subsidy are alternative models that may provide more attractive schemes from the standpoint of investors.
Research limitations/implications
However, current paper has limitation which is subject to enhance for better analysis in future research such as implementation of the in-depth assessment of risk management system to deal with all exposed risks.
Practical implications
This paper provides that setting up a complete telecommunication access infrastructures in eastern Indonesia is feasible under new proposed models.
Social implications
The new proposed models provide stronger determination of Indonesian Government for serving rural and remote people and minimizing the digital divide in eastern area.
Originality/value
Under the new proposed models, the role and capacity of the government is adjusted. The government should dominate and be less dependent on private investment. Also, the government should shift from triggering service penetration into developing a complete infrastructure set up.
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