Performance Improvement of Mechanical Components by Precision Coating

Author(s):  
Korka Zoltan Iosif

Precision coatings applied to mechanical components do not only provide different degrees of protection of their surfaces but can also contribute to significant improvement of performance. Given this fact, this chapter presents the main coating technologies and their practical applications. Beginning with the presentation of the main functions and types of coatings, the chapter progresses by offering information regarding the methods, the area of application, and the performance properties for each of the presented coating technologies. Furthermore, the quality and precision aspects, as well as the applicable standards, are discussed. Some practical examples regarding the performance improvement of different mechanical components by applying precision coatings are additionally presented. The final goal of this chapter is to enable the readers to choose the proper system for their application, by providing all the relevant information regarding various coating types.

2019 ◽  
Vol 24 ◽  
Author(s):  
A. Spender ◽  
C. Bullen ◽  
L. Altmann-Richer ◽  
J. Cripps ◽  
R. Duffy ◽  
...  

Abstract The aim of this research was to look at the emergence of wearable technology and the internet of things (IoT) and their current and potential use in the health and care area. There is a wide and ever-expanding range of wearables, devices, apps, data aggregators and platforms allowing the measurement, tracking and aggregation of a multitude of health and lifestyle measures, information and behaviours. The use and application of such technology and the corresponding richness of data that it can provide bring the health and care insurance market both potential opportunities and challenges. Insurers across a range of fields are already engaging with this type of technology in their proposition designs in areas such as customer engagement, marketing and underwriting. However, it seems like we are just at the start of the journey, on a learning curve to find the optimal practical applications of such technology with many aspects as yet untried, tested or indeed backed up with quantifiable evidence. It is clear though that technology is only part of the solution, on its own it will not engage or change behaviours and insurers will need to consider this in terms of implementation and goals. In the first weeks of forming this working party, it became evident that the potential scope of this technology, the information already out there and the pace of development of it, is almost overwhelming. With many yet-unanswered questions the paper focuses on pulling together in one place relevant information for the consideration of the health and care actuary, and also to open the reader’s eyes to potential future innovations by drawing on use of the technology in other markets and spheres, and the “science fiction–like” new technology that is just around the corner. The paper explores: an overview of wearables and IoT and available measures, examples of how this technology is currently being used, data considerations, risks and challenges, future technology developments and what this may mean for the future of insurance. Insurers who engage now are likely to be on an evolving business case model and product development journey, over which they can build up their understanding and interpretation of the data that this technology can provide. An exciting area full of potential – when and how will you get involved?


2003 ◽  
Vol 127 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Richard J. Zarbo ◽  
Raouf E. Nakhleh ◽  
Molly Walsh

Abstract Context.—Measurement of physicians' and patients' satisfaction with laboratory services has recently become a requirement of health care accreditation agencies in the United States. To our knowledge, this is the first customer satisfaction survey of anatomic pathology services to provide a standardized tool and benchmarks for subsequent measures of satisfaction. Objective.—This Q-Probes study assessed physician satisfaction with anatomic pathology laboratory services and sought to determine characteristics that correlate with a high level of physician satisfaction. Design.—In January 2001, each laboratory used standardized survey forms to assess physician customer satisfaction with 10 specific elements of service in anatomic pathology and an overall satisfaction rating based on a scale of rankings from a 5 for excellent to a 1 for poor. Data from up to 50 surveys returned per laboratory were compiled and analyzed by the College of American Pathologists. A general questionnaire collected information about types of services offered and each laboratory's quality assurance initiatives to determine characteristics that correlate with a high level of physician satisfaction. Setting.—Hospital-based laboratories in the United States (95.8%), as well as others from Canada and Australia. Participants.—Ninety-four voluntary subscriber laboratories in the College of American Pathologists Q-Probes quality improvement program participated in this survey. Roughly 70% of respondents were from hospitals with occupied bedsizes of 300 or less, 65% were private nonprofit institutions, just over half were located in cities, one third were teaching hospitals, and 19% had pathology residency training programs. Main Outcome Measures.—Overall physician satisfaction with anatomic pathology and 10 selected aspects of the laboratory service (professional interaction, diagnostic accuracy, pathologist responsiveness to problems, pathologist accessibility for frozen section, tumor board presentations, courtesy of secretarial and technical staff, communication of relevant information, teaching conferences and courses, notification of significant abnormal results, and timeliness of reporting). Results.—The database of 3065 physician surveys was derived from 94 laboratories. An average of 32.6 surveys (median 30) was returned per institution, with a range of 5 to 50 surveys per institution. The mean response rate was 35.6% (median 32.5%). The median (50th percentile) laboratory had an overall median satisfaction score of 4.4. The lowest satisfaction scores that were obtained all related to poor communication, which included timeliness of reporting, communication of relevant information, and notification of significant abnormal results. Statistically significant associations of customer satisfaction with certain institutional characteristics and laboratory performance improvement activities were identified. Conclusions.—The importance of this satisfaction survey lies not in its requirement as an exercise for accrediting agencies but in understanding the needs of the customer (in this case the physician) to direct performance improvement in the delivery of quality anatomic pathology laboratory services.


Author(s):  
Sebastian Susmarski

<p>Stakeholder analysis provides relevant information about the organization’s impact on the environment and the environment’s impact on the organization. These relationships are gaining importance in investment activities, especially in relation to projects that are partly or fully financed from public funds. Stakeholder analysis is therefore a key tool for project managers providing them with knowledge on the best communication strategy with stakeholders that can lead to management of relationships with stakeholders. The aim of the article is to indicate how much the balance of social benefits and costs perceived by stakeholders regarding the expansion of an innovation centre, the Gdańsk Science and Technology Park (GSTP), contributes to the increase in the value of this project. The study also has partial goals established: the effectiveness of implementing by the GSTP the function of increasing cooperation with universities and the industry in conducting experimental research and subsequently translating these effects into practical applications from the point of view of companies and residents. The key element of the research was to identify the needs of particular groups of stakeholders in the context of choosing methods of communicating with them. The study used a survey conducted among stakeholders of the GSTP.</p>


Author(s):  
Hariom Pandya ◽  
Brijesh Bhatt

The usage and amount of information available on the internet increase over the past decade. This digitization leads to the need for automated answering system to extract fruitful information from redundant and transitional knowledge sources. Such systems are designed to cater the most prominent answer from this giant knowledge source to the user&rsquo;s query using natural language understanding (NLU) and thus eminently depends on the Question-answering(QA) field. Question answering involves but not limited to the steps like mapping of user&rsquo;s question to pertinent query, retrieval of relevant information, finding the best suitable answer from the retrieved information etc. The current improvement of deep learning models evince compelling performance improvement in all these tasks. In this review work, the research directions of QA field are analyzed based on the type of question, answer type, source of evidence-answer, and modeling approach. This detailing followed by open challenges of the field like automatic question generation, similarity detection and, low resource availability for a language. In the end, a survey of available datasets and evaluation measures is presented.


2014 ◽  
Vol 68 (9) ◽  
Author(s):  
Ana Hernández-Giménez ◽  
Dolores Castelló ◽  
Agustín Bueno-López

AbstractThe most relevant information about the different active phases that have been studied for the catalytic combustion of soot is reviewed and discussed in this article. Many catalysts have been reported to accelerate soot combustion, including formulations with noble metals, alkaline metals and alkaline earth metals, transition metals that can accomplish redox cycles (V, Mn, Co, Cu, Fe, etc.), and internal transition metals. Platinum catalysts are among those of most interest for practical applications, and an important feature of these catalysts is that sulphur-resistant platinum formulations have been prepared. Some metal oxide-based catalysts also appear to be promising candidates for soot combustion in practical applications, including ceria-based formulations and mixed oxides with perovskite and spinel structures. Some of these metal oxide catalysts produce highly reactive active oxygen species that promote efficient soot combustion. Thermal stability is an important requirement for a soot combustion catalyst, which precludes the practical utilisation of several potential catalysts such as most alkaline metal catalysts, molten salts, and metal chlorides. Some noble metal catalysts are also unstable due to the formation of volatile oxides (ruthenium, iridium, and osmium).


2016 ◽  
Vol 99 (4) ◽  
pp. 906-913 ◽  
Author(s):  
Veronica M T Lattanzio

Abstract Screening methods are defined as methods that are used to detect the presence of a substance or class of substances at the level of interest. These methods must have the capability of high sample throughput when being used to screen large numbers of samples for potential noncompliant results. Before using a screening method for practical applications, its fitness for the intended purpose needs to be demonstrated. This is normally achieved by conducting a validation study, comparing method performance against predefined criteria. Official guidelines recently established by the European Union for the evaluation of fitness-for-purpose performance parameters of screening methods to be used for the detection of mycotoxins in foods are presented and discussed herein. Practical applications of this evaluation scheme for single- and interlaboratory validation studies, as well as relevant information on screening method performances are reviewed, with emphasis on the impact of mycotoxin contamination in real samples on the fitness-for-purpose of the screening test. Lastly, validation follow-up is discussed in terms of extension of the scope of the method (increasing the range of application in terms of mycotoxin/matrix combinations), method implementation and verification, and evaluation of the method's applicability to modified mycotoxins.


1993 ◽  
Vol 01 (01) ◽  
pp. 145-157
Author(s):  
Helen Tan Poh Koon ◽  
Meng-Hye Lee

It is recognised that the overall success of a business depends very much on the quality of management planning, and management needs relevant information in order to plan effectively. However, most management information systems are centered on information obtained in-house. Very little emphasis is placed on external information, except some very general information published by Government bodies. If it is possible to incorporate information from other similar firms into the analysis, a firm will be able to plan and therefore compete more efficiently and improve its overall performance. The application of interfirm comparison studies as an analytical tool to aid management in planning and performance improvement has been well developed and widely accepted in many developed countries. This paper explains the first application of interfirm comparison studies on a wide and comprehensive scale in Singapore, with particular reference to the garment industry business.


Author(s):  
Wei Gong ◽  
Peng Wang ◽  
Dichao Dai ◽  
Zekang Liu ◽  
Leyin Zheng ◽  
...  

This review summarizes diverse methods of performance improvement for infrared (IR) colloidal quantum dots (CQDs)-based photoelectric conversion devices, and provides guidelines for practical applications.


Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 178
Author(s):  
Yiqing Dai ◽  
Yu Bai

Building integrated photovoltaic (BIPV) technologies are promising and practical for sustainable energy harvesting in buildings. BIPV products are commercially available, but their electrical power outputs in practice are negatively affected by several factors in outdoor environments. Performance improvement of BIPV applications requires mitigation approaches based on an understanding of these factors. A review was, therefore, conducted on this issue in order to providing guidance for practical applications in terms of the selection of proper PV technologies, temperature management, solar irradiation enhancement and avoidance of excessive mechanical strain. First, major types of PV cells used in BIPV applications were comparatively studied in terms of their electrical performances in laboratorial and outdoor environments. Second, temperature elevations were widely reported in outdoor BIPV applications, which may cause efficiency degradation, and the mitigation approaches may include air-flow ventilation, water circulation and utilization of phase change materials. The heat collected from the PV cells may also be further utilized. Third, mechanical strains may be transferred to the integrated PV cells in BIPV applications, and their effects on electrical performance PV cells were also discussed. In addition, the power output of BIPV systems increases with the solar irradiation received by the PV cells, which may be improved in terms of the location, azimuth and tilt of the cells and the transmittance of surface glazing. Suggestions for practical applications and further research opportunities were, therefore, provided.


Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 479 ◽  
Author(s):  
C. J. Luis Pérez ◽  
R. Luri Irigoyen ◽  
J. P. Fuertes Bonel ◽  
J. León Iriarte ◽  
D. Salcedo Pérez ◽  
...  

Severe plastic deformation (SPD) processes have attracted a great deal of both scientific and technological interest over the last few years as a consequence of the improvements that are possible to obtain in the microstructure and mechanical properties of the materials manufactured through the use of these kind of processes. However, the practical applications of such materials to obtain mechanical components are significantly fewer. As a direct consequence, the same thing has been observed in the development of studies that show the in-service behaviour of the mechanical components developed in this way. Since one of the industrial objectives of these SPD processes is to obtain functional parts, it is necessary to carry out studies to fill this gap. Therefore, in this study, an analysis of the wear that cams undergo when manufactured from an AA5083 aluminium-magnesium alloy is carried out. The cams were isothermally-forged from materials with and without previous SPD processing by equal channel angular pressing (ECAP). Subsequently, the wear behaviour of these cams was analysed by using specific equipment, which may have been considered to have a block-on-ring configuration, developed for testing in-service wear behaviour of mechanical parts. From this comparative wear study with cams, it is shown that previously-processed materials by ECAP have a better wear performance. Moreover, finite element modelling (FEM) simulations were also included to predict wear in the cams processed in this way. A good agreement between FEM and experimental results was obtained. It is this aspect of performing the wear tests on functional and real mechanical components, and not on laboratory samples, which makes this present research work novel.


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