Enrique Chacón Tanarro

Enrique Chacón Tanarro
Universidad Politécnica de Madrid | UPM · Mechancial Engineering

Phd. Mechanical Engineering

About

41
Publications
18,114
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323
Citations
Citations since 2017
17 Research Items
253 Citations
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20172018201920202021202220230102030405060
20172018201920202021202220230102030405060

Publications

Publications (41)
Article
Full-text available
The article studies the friction coefficient in elastohydrodynamic lubrication (EHL) by means of analytically obtained equations for different contact geometries. The introduction of some simplifications allows for the simultaneous consideration of piezoviscous, pseudoplastic and thermal phenomena, resulting in complete and realistic models, which...
Chapter
Safe performance is essential for any medical technology and its assurance a requirement for reaching market and, hence, making societal impacts. Consequently, a wide set of methodologies, techniques and international standards propose strategies for detecting and minimizing design, manufacturing and operational risks and deal with the analysis and...
Article
Industrial robots are traditionally used at machining cells for machine feeding and workpiece handling. A reassignment of tasks to improve the productivity requires a modelling of the robot behaviour from the point of view of its position precision. This paper characterizes and predicts the precision achievable when drilling with an industrial robo...
Conference Paper
Full-text available
The CDIO approach to engineering education has reformulated higher education in scientific, technical and technological disciplines, through the promotion of active learning in connection with the conception, development, implementation and operation of real engineering products, processes and systems. The model is already making a transformative i...
Conference Paper
Full-text available
When education is faced with a Project-Based Learning (PBL) approach, understanding and managing subjects considering project management principles help better achieving project objectives and hence improving the learning outcomes. Within the project management field, stakeholders' management has been considered a key element for project success. I...
Conference Paper
Full-text available
The Conceive-Design-Implement-Operate (CDIO) educational framework has been revolutionizing the world of engineering education since its inception at the beginning of this century. Its approach to business reality, encouraging comprehensive and contextualized project-based learning, has been the subject of numerous praises in recent years. However,...
Article
This article analyses two types of surface modifications: DLC coating and texturing, together with their combined effect in lubricated contacts. Surfaces were textured using contact lithography and chemical etching, whereas DLC coatings were deposited using the magnetron sputtering technique. The effect of these modifications on the friction coeffi...
Article
Smartphones are already taking part of the everyday life of more than two and a half billion people. University students are one of the population groups in which smartphone penetration is more intense. Applications for activities organization, voting, translation, information sharing, flashcarding, etc. are already of general use. However, despite...
Conference Paper
Full-text available
This study presents an innovative teaching-learning experience, aimed at connecting project-based learning with service learning in the biomedical engineering field. This experience is planned and implemented, coordinately, in two courses devoted to the biomedical engineering field: "Bioengineering Design" and "MedTECH". These courses are respectiv...
Conference Paper
Full-text available
Project-Based Learning (PBL) is a model in which learning opportunities are organized around projects. Projects are complex tasks that are based on challenging questions or subjects that involve the students in design, problem-solving, decision making, or investigative activities. In regard to students in Higher Education Institutions (HEI), dealin...
Article
We have developed and validated a conceptually simple model capable of predicting the macroscale elastic properties of a platelet nanocomposite. The model allows for studying the individual and combined effect of the parameters with influence on those properties, namely nanofiller weight fraction, misalignment, dispersion quality, size distribution...
Conference Paper
Full-text available
Biomedical engineering is aimed at the application of engineering principles, methods and design concepts to medicine and biology for healthcare purposes, mainly as a support for preventive, diagnostic or therapeutic tasks, and is directly connected with professional practice in the medical device development sector. Industrial and management engin...
Conference Paper
Full-text available
UBORA is an educational and design online platform or infrastructure aimed at the collaborative development of open-source medical devices (OSMD) to address current and future global healthcare challenges. It pretends to help medical professionals and related industries with new methods for creation of innovative solutions that take into account pa...
Article
Full-text available
This article presents thermal EHL calculations for line contacts using a new analytical form of the Reynolds equation for lubricants whose rheological behaviour follows a modified Carreau model proposed by Bair. The isothermal calculation process was presented in: de la Guerra (Tribol Int 82:133–141, 2015). A new parametric formula is hereby develo...
Article
Full-text available
Biomedical engineering (BME) has the potential of transforming medical care towards universal healthcare by means of the democratization of medical technology. To this end, innovative holistic approaches and multidisciplinary teams, built upon the gathering of international talent, should be encouraged within the medical industry. However, these tr...
Article
Full-text available
This article presents an analytical model for predicting friction in mixed lubrication regime. The calculations consider load shared between roughness asperities and the lubricant film, as well as the appearance of thermal effects in the contact and the influence of the lubricant rheology. Tests using tribometers have been performed to measure the...
Article
This article presents a thermal resistances-based approach for solving the thermal-elastohydrodynamic lubrication problem in point contact, taking the lubricant rheology into account. The friction coefficient in the contact is estimated, along with the distribution of both film thickness and temperature. A commercial tribometer is used in order to...
Article
Full-text available
Under operating conditions which are unfavourable for lubrication, such as high load and low velocity, the use of textured surfaces significantly promotes the formation of a thick lubricant film and an improvement of the friction coefficient. This paper relates to the manufacture of textures using a photolithography and chemical etching process. Di...
Conference Paper
Full-text available
Engineering Design " is a discipline aimed at improving our understanding about the development processes of novel and successful products, processes and systems in general, and at providing engineers with methodical steps for enhancing such processes. It may well be the engineering discipline more linked to the CDIO approach and to the conceive-de...
Conference Paper
Full-text available
The implementation of the " Bologna process " has culminated at ETSII-TU Madrid with the beginning of the Master's Degree in Industrial Engineering, in academic year 2014-15. The program has been successfully approved by the Spanish Agency for Accreditation (ANECA) and includes a set of parallel subjects, based on the CDIO methodology, denominated...
Article
Full-text available
In our work we present the complete development process of geometrically complex micro-vascular shape-memory polymer actuators. The complex geometries and three-dimensional networks are designed by means of computer aided design resources. Manufacture is accomplished, in a single step, by means of laser stereolithography, directly from the computer...
Article
Full-text available
The path to the future requires the best possible trained engineers for further developing and mentoring the technological advances that are reshaping the present. Such advances may be the keys for facing the challenges ahead, including the population outgrowth, the climate changes and a global need for sustainability and responsible management, wh...
Article
Full-text available
This paper presents the development of an analytical model for the prediction of the friction coefficient in line contacts under thermal elastohydrodynamic lubrication (TEHL). A new theoretical equation is deduced for determining the friction coefficient, taking into account the rheology of common lubricants under TEHL. This approach also considers...
Chapter
Tribology is the science and engineering of rubbing surfaces. This article presents a historical overview of tribology evolution from prehistory to the highly advanced stage reached nowadays. Phenomenological analyses based on observation and experimentation gave rise to a progressive understanding of the processes of friction, wear and lubrication...
Conference Paper
Full-text available
Engineering Design " is a discipline aimed at improving our understanding about the development processes of novel and successful products, processes and systems in general, and at providing engineers with methodical steps for enhancing such processes. It may well be the engineering discipline more linked to the CDIO approach and to the conceive-de...
Article
This article presents a film thickness prediction, using a new analytical form of the one-dimensional Reynolds equation, for lubricants whose rheological behaviour follows a modified Carreau model proposed by Bair. The development of the new equation was presented in New Reynolds equation for line contact based on the Carreau model modification by...
Article
Full-text available
Compiling data from various recent courses through student and professor surveys in a "Theory of machines and mechanisms" course has enabledusto identify some difficulties and needs, most of which are related to the large number of students attending the course, usually above 350. This work presents the development of a helpful computer-assisted se...
Article
This article explores the influence of the appearance of micropitting in different types of additives added to a polyalphaolefinic low-viscosity base oil, namely a polyalphaolefin PAO6. Additives commonly used in mechanical transmissions by gears were used, i.e., extreme pressure, anti-wear and friction modifier.For the study, we have conducted a s...
Article
The combined use of smart materials, complementing each others\' characteristics and resulting in devices with optimised features, is providing new solutions in many industries. The use of ingenious combinations of smart materials has led to improvements in actuation speed and force, signal-to-noise ratio, sensor precision and unique capabilities s...
Article
This paper analyses the applicability of artificial neural networks for predicting the lubricated friction coefficient. We will consider their use as faster and simpler alternatives to simulations based on theoretical behaviour equations. The development of several different artificial neural networks is presented. They have been trained through tr...
Article
The aim of this article is to study the appearance of pitting in spur gears by taking account of different multiaxial fatigue criteria. The stress levels undergone by the teeth are considered in order to be able to predict their life and compare the fatigue strength of gear materials. The process begins calculating the stress field inside the teeth...
Article
Surface texturing has proved to be a very useful tool for expanding the behaviour under hydrodynamic and elastohydrodynamic regimes instead of mixed or boundary lubrication regimes, and therefore for reducing the friction coefficient under high-load low-speed conditions. This article presents the texturing of different copper test-samples using pho...
Article
Full-text available
Problem- or project-based teaching-learning experiences (typically “PBL” or “PjBL”) have enormous benefits but also certain limitations and difficulties that have been analysed in this work with the purpose of setting some standard guidelines that may help to enhance the results of this kind of teaching experiences. A systematic, prioritised analys...
Article
This paper presents a new form of the one-dimensional Reynolds equation for lubricants whose rheological behaviour follows a modified Carreau rheological model proposed by Bair. The results of the shear stress and flow rate obtained through a new Reynolds–Carreau equation are shown and compared with the results obtained by other researchers.
Article
This paper analyses the influence of lubricant behaviour on the appearance of pitting. It attempts to study the effect of viscosity–pressure relation, compressibility, film thickness–roughness relation and friction coefficient on pitting failure of the contacting elements. To explain these effects, we first deal with the influence of the oil on the...
Chapter
This work presents the Royal Factories promoted by the Spanish crown in the 18th and 19th centuries in the context of European industrialisation. They are classified together with the main types of factories and some specific examples are described. The article includes a discussion on the conditions that promoted their proliferation as the precurs...
Article
The development of artificial joint prostheses is an especially relevant advance linked to the combined use of medical and engineering sciences. In ideal conditions a joint prosthesis should last the whole patient's life. For a younger patient, that is normally linked to using enhanced designs capable of reducing friction and wear rate, thus increa...
Article
Conventional computer-aided design software does not yet provide special tools oriented to modeling the complexity of biological systems, as such programs are mainly developed for promoting information exchange in tasks related to industrial design and to parts with regular smooth surfaces. The process explained in this study allows defining and pr...
Article
This article presents analytical friction prediction models applicable to lubricants in point contacts under thermal elastohydrodynamic lubrication (TEHL). The types of models used consider the heat generated and its penetration into the bulk of the contacting solids. Therefore, the increase in temperature is determined, which causes important vari...
Article
Bearings are very usual engineering components and are used in almost all types of machinery. They are essential for the correct operation of machines because they provide the separation between loaded surfaces in relative motion, through a hydrodynamic lubricant film. In this work, a pilot experience is set out regarding the teaching and learning...
Conference Paper
Along with theoretical knowledge acquisition, knowledge application and professional competence acquisition must be important teaching objectives in any engineering subject. This is especially remarkable for subjects aiming the acquisition of product design knowledge, provided that, in actual professional practice, product design is done in multidi...

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Projects

Projects (2)
Project
Toolless Manufacturing of Complex Structures (TOMAX): The focus of the project is to unite industrial know-how in the field of software development, photopolymers and ceramics, high performance light-sources, system integration, life cycle analysis, industrial exploitation and rewarding end-user cases. The consortium will provide 3D-printers with high throughput and outstanding materials and energy efficiency. Targeted end-use applications include ceramics for aerospace engineering, medical devices and energy efficient lighting applications. The consortium is aiming to exploit disruptive applications of L-AMT by developing process chains beyond the current state of the art. Overall, the consortium will provide innovative, resource efficient manufacturing processes. ToMax will develop energy-efficient machinery and processes, with a focus on manufacturing of alumina, silicon nitride and cermet parts with high shape complexity.
Project
UBORA Project: "Euro-African Open Biomedical Engineering e-Platform for Innovation through Education"-H2020-INFRASUPP-2016-1-Grant Agreement n° 731053 UBORA (“excellence” in Swahili) brings together European and African Universities and their associated technological hubs, national and international policymakers and committed and credible stakeholders to create an e-Infrastructure, UBORA, for open source co-design of new solutions to face the current and future healthcare challenges of both continents.Through UBORA, the biomedical community will generate and share open data and blueprints of biomedical devices, accompanied by the required procedures for respecting quality assurance, and assessing performance and safety. Propelled by a series of Summer Schools and Competitions, this e-Infrastructure will foster advances in education and the development of innovative solutions in Biomedical Engineering, both of which are flywheels for European and African economies.