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Analisis Rediseno E Instrumentacion De La Maquina De Ensayos Para Fatiga A Tension De Amplitud Constante
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Book Synopsis Análisis, rediseño e instrumentación de la máquina de ensayos para fatiga a tensión de amplitud constante by : Carlos Daniel Gutiérrez Rey
Download or read book Análisis, rediseño e instrumentación de la máquina de ensayos para fatiga a tensión de amplitud constante written by Carlos Daniel Gutiérrez Rey and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "El proyecto presenta la continuación de la construcción y análisis de la máquina para fatiga en tensión cíclica con amplitudes constantes. Donde como objetivos se tenía: rediseño y construcción de las pinzas de sujeción, correcta implementación de celda de carga e instrumentación de la misma para obtención de distintas variables (fuerza, desplazamiento y deformaciones). Se realizo como primer medida el diseño y construcción de las pinzas de sujeción de la máquina. Seguidamente, la instalación y calibración de las galgas extensiométricas en cada uno de los materiales (latón, cobre y aluminio) para así obtener las curvas de esfuerzo-deformación. A continuación la correcta instrumentación y calibración de la celda de carga Kistler 9137B y los sensores de desplazamiento Omega LD500-5 y LD100-20 en la máquina. Finalmente se llevaron acabo pruebas estáticas y dinámicas con el fin de determinar si las variables se encontraban en fase o no, que factores afectan los datos obtenidos y el calculo de la rigidez del sistema. A partir de las pruebas estáticas se obtuvo la rigidez de cada una de las partes del sistema y mediante el sensor LD100 se registro el juego que hay entre algunas piezas del mismo. Por medio de las pruebas dinámicas se comprobó que se sigue un comportamiento sinusoidal de amplitud contante y el desfase que hay entre los instrumentos del sistema. Para ambas pruebas se llevaron acabo comparaciones entre los instrumentos instalados en la maquina y las galgas extensiométricas ubicadas en cada una de las probetas. A partir de los resultados y observaciones en los experimentos se determinaron correcciones que se deben realizar para trabajos futuros, como por ejemplo, un sistema de lubricación para el conjunto engranaje-biela."-- Tomado del Formato de Documento de Grado.
Book Synopsis Análisis de fatiga en máquinas by : AVILES GONZALEZ, RAFAEL
Download or read book Análisis de fatiga en máquinas written by AVILES GONZALEZ, RAFAEL and published by Ediciones Paraninfo, S.A.. This book was released on 2005-01-01 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Este libro está estructurado de forma que pueda servir como texto para estudiantes de ingeniería y como referencia de consulta para profesionales. Se presentan los principales procedimientos utilizados en la industria para el cálculo resistente de piezas y componentes de máquinas, con especial énfasis en los de análisis de fatiga producida por tensiones variables con el tiempo.
Book Synopsis Diseño de una máquina para relizar ensayos de fatiga por flexión rotativa by : Alberto Lama Ruiz
Download or read book Diseño de una máquina para relizar ensayos de fatiga por flexión rotativa written by Alberto Lama Ruiz and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [CASTELLÀ] La fatiga de un material es un desgaste prematuro que aparece cuando se somete a una pieza a esfuerzos repetitivos, esto provocará una pequeña fisura en un determinado punto del material que irá creciendo a medida que se repita el esfuerzo. Gran parte de los componentes mecánicos están sometidos a fatiga y es la causante de la mayoría de fallas que se producen en ellos. Para poder prever este fenómeno existen varios tipos de máquinas y estudios que permiten obtener un valor límite en el cual no fallará el diseño, este valor límite recibe el nombre de límite de resistencia a la fatiga y se puede obtener una aproximación del mismo de manera teórica o de forma mucho más confiable mediante ensayos. El objetivo de este proyecto es el diseño de la máquina más utilizada para este tipo de ensayos, la conocida como máquina de Moore, con la que se realizan ensayos de fatiga a flexión rotativa aplicando una carga constante sobre una probeta y registrando el número de ciclos que aguanta hasta la falla, esta máquina debe de tener un diseño lo más sencillo y económico posible. Primero es necesario hacer un estudio general sobre la teoría que existe actualmente sobre la fatiga y seguidamente con una idea general del diseño de la máquina se determinarán las dimensiones, material, acabado superficial y forma de la probeta utilizada siguiendo la normativa existente. A partir del material con mayor tensión última empleado en la probeta, se diseñarán los elementos de la máquina a vida infinita, utilizando entre otros cálculos, la teoría de la elasticidad para extraer el momento torsor del eje de transmisión. Seguidamente se seleccionará el motor para que la probeta tenga una vida finita, teniendo en cuenta que no es necesario llegar al 100% de la fuerza durante los ensayos de fatiga. Con los elementos más importantes de la máquina calculados, es posible comenzar la selección y el dimensionamiento buscando en todo momento la sencillez, facilidad de mecanizado y el precio más bajo en igualdad de calidad. Pese a que el proyecto se centra en la parte mecánica, también se abordará de forma teórica los elementos de seguridad y control con los que debe de contar la máquina. En el proyecto se incluye un presupuesto detallado y un estudio de impacto medioambiental de la máquina.
Book Synopsis Diseño de una máquina para ensayo de fatiga a flexión rotativa con cuatro puntos de apoyo by : Pedro Ortiz Morón
Download or read book Diseño de una máquina para ensayo de fatiga a flexión rotativa con cuatro puntos de apoyo written by Pedro Ortiz Morón and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: El proyecto plantea el diseño de una máquina tipo Moore para el ensayo de fatiga a flexión rotativa sobre probetas cilíndricas de acero. La necesidad de la máquina surge en la EUETIB durante un estudio previo sobre la viabilidad de una línea de investigación en vida a fatiga relacionada con el proceso de acabado de bruñido con bola. En el momento en que se plantea la posibilidad de diseñar la máquina, se establece como requerimiento llevar a cabo un diseño que resulte particularmente útil en la docencia, en el cual el circuito de carga mecánica se pueda observar desde la parte superior de la máquina sin que queden partes ocultas, y con un sistema de accionamiento que resulte adecuado ergonómicamente y que favorezca una buena repetibilidad de los ensayos. La metodología seguida se basa en primer lugar en estudiar detenidamente la normativa relacionada con el ensayo de fatiga para saber qué aspectos del mismo están normalizados y cuáles no, y al comprobar que la probeta para el ensayo de fatiga no está completamente definida por las normas, se determina una geometría de probeta que sea adecuada tanto para la finalidad del ensayo a fatiga como para el tratamiento de acabado superficial de bruñido con bola. A partir de la medida de la probeta, se dimensionan los diferentes sistemas mecánicos de la máquina: sistema de carga, sujeción, rodamientos, potencia de accionamiento, resguardo móvil, etc. El proyecto aborda y resuelve el diseño electrónico del contador de ciclos hasta la rotura de la probeta, y el diseño eléctrico del accionamiento del motor teniendo en cuenta la seguridad. En el proyecto se incluye un presupuesto detallado y un estudio de impacto medioambiental de la máquina. Un aspecto destacable del trabajo es que al incluir además del diseño mecánico, el diseño de las partes electrónica y eléctrica, se posibilita que el proyecto presentado tenga la definición suficiente para la construcción completa de la máquina.
Book Synopsis Análisis de falla por fatiga para probetas con concentradores de esfuerzo by : Krishtian David Barrera Martinez
Download or read book Análisis de falla por fatiga para probetas con concentradores de esfuerzo written by Krishtian David Barrera Martinez and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: El presente proyecto hace primero un rediseño a máquina experimental de la universidad para analizar fatiga basado en la máquina de Moore. Posteriormente, se utiliza dicha máquina para analizar el fenómeno de falla por fatiga en probetas con concentradores de esfuerzo. Para ello, se ve limitada la carga máxima que se puede llegar a utilizar de modo que es necesario utiliza un concentrador de esfuerzo grande para pruebas en ciclos bajos y un concentrador de esfuerzo pequeño para pruebas en ciclos altos.
Book Synopsis Recollections of My Life by : Santiago Ramón y Cajal
Download or read book Recollections of My Life written by Santiago Ramón y Cajal and published by . This book was released on 1966 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Frequency Dictionary of Spanish by : Mark Davies
Download or read book A Frequency Dictionary of Spanish written by Mark Davies and published by Routledge. This book was released on 2017-12-12 with total page 1457 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Frequency Dictionary of Spanish has been fully revised and updated, including over 500 new entries, making it an invaluable resource for students of Spanish. Based on a new web-based corpus containing more than 2 billion words collected from 21 Spanish-speaking countries, the second edition of A Frequency Dictionary of Spanish provides the most expansive and up-to-date guidelines on Spanish vocabulary. Each entry is accompanied with an illustrative example and full English translation. The Dictionary provides a rich resource for language teaching and curriculum design, while a separate CD version provides the full text in a tab-delimited format ideally suited for use by corpus and computational linguistics. With entries arranged both by frequency and alphabetically, A Frequency Dictionary of Spanish enables students of all levels to get the most out of their study of vocabulary in an engaging and efficient way.
Book Synopsis The Routledge Spanish Bilingual Dictionary of Psychology and Psychiatry by : Steven M. Kaplan
Download or read book The Routledge Spanish Bilingual Dictionary of Psychology and Psychiatry written by Steven M. Kaplan and published by Taylor & Francis US. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Routledge Spanish Bilingual Dictionary of Psychology and Psychiatry contains over 100,000 entries making this the most comprehensive and up-to-date dictionary of its kind. The Dictionary provides concise, comprehensive and current coverage of every word or phrase used in the study and practice of psychiatry and psychology. This valuable reference tool covers all disciplines and sub-disciplines, both research-based and clinical. This is a vital resource to those in the healthcare professions, to academicians and to those who work in translation and/or interpretation, healthcare and the law who are in contact with the English and Spanish speaking communities.
Book Synopsis Manual of Neonatal Care by : John P. Cloherty
Download or read book Manual of Neonatal Care written by John P. Cloherty and published by Lippincott Williams & Wilkins. This book was released on 2012-01-05 with total page 1098 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition of the Manual of Neonatal Care has been completely updated and extensively revised to reflect the changes in fetal, perinatal, and neonatal care that have occurred since the sixth edition. This portable text covers current and practical approaches to evaluation and management of conditions encountered in the fetus and the newborn, as practiced in high volume clinical services that include contemporary prenatal and postnatal care of infants with routine, as well as complex medical and surgical problems. Written by expert authors from the Harvard Program in Neonatology and other major neonatology programs across the United States, the manual’s outline format gives readers rapid access to large amounts of valuable information quickly. The Children’s Hospital Boston Neonatology Program at Harvard has grown to include 57 attending neonatologists and 18 fellows who care for more than 28,000 newborns delivered annually. The book also includes the popular appendices on topics such as common NICU medication guidelines, the effects of maternal drugs on the fetus, and the use of maternal medications during lactation. Plus, there are intubation/sedation guidelines and a guide to neonatal resuscitation on the inside covers that provide crucial information in a quick and easy format.
Download or read book To Be a Jew written by Hayim H. Donin and published by Basic Books. This book was released on 2019-08-13 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: The classic guide to the ageless heritage of Judaism Embraced over many decades by hundreds of thousands of readers, To Be a Jew offers a clear and comprehensive introduction to traditional Jewish laws and customs as they apply to daily life in the contemporary world. In simple and powerful language, Rabbi Hayim Halevy Donin presents the fundamentals of Judaism, including the laws and observances for the Sabbath, the dietary laws, family life, prayer at home and in the synagogue, the major and minor holidays, and the guiding principles and observances of life, such as birth, naming, circumcision, adoption and conversion, Bar-mitzvah, marriage, divorce, death, and mourning. Ideal for reference, reflection, and inspiration, To Be a Jew will by greatly valued by anyone who feels that knowing, understanding, and observing the laws and traditions of Judaism in daily life is the essence of what it means to be a Jew.
Book Synopsis Geotechnical Engineering in the XXI Century: Lessons learned and future challenges by : N.P. López-Acosta
Download or read book Geotechnical Engineering in the XXI Century: Lessons learned and future challenges written by N.P. López-Acosta and published by IOS Press. This book was released on 2019-11-26 with total page 3006 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first Pan-American Conference on Soil Mechanics and Geotechnical Engineering (PCSMGE) was held in Mexico in 1959. Every 4 years since then, PCSMGE has brought together the geotechnical engineering community from all over the world to discuss the problems, solutions and future challenges facing this engineering sector. Sixty years after the first conference, the 2019 edition returns to Mexico. This book, Geotechnical Engineering in the XXI Century: Lessons learned and future challenges, presents the proceedings of the XVI Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XVI PCSMGE), held in Cancun, Mexico, from 17 – 20 November 2019. Of the 393 full papers submitted, 335 were accepted for publication after peer review. They are included here organized into 19 technical sessions, and cover a wide range of themes related to geotechnical engineering in the 21st century. Topics covered include: laboratory and in-situ testing; analytical and physical modeling in geotechnics; numerical modeling in geotechnics; unsaturated soils; soft soils; foundations and retaining structures; excavations and tunnels; offshore geotechnics; transportation in geotechnics; natural hazards; embankments and tailings dams; soils dynamics and earthquake engineering; ground improvement; sustainability and geo-environment; preservation of historic sites; forensics engineering; rock mechanics; education; and energy geotechnics. Providing a state-of-the-art overview of research into innovative and challenging applications in the field, the book will be of interest to all those working in soil mechanics and geotechnical engineering. In this proceedings, 58% of the contributions are in English, and 42% of the contributions are in Spanish or Portuguese.
Book Synopsis Finding Your Writer's Voice by : Thaisa Frank
Download or read book Finding Your Writer's Voice written by Thaisa Frank and published by Macmillan + ORM. This book was released on 2015-08-11 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: An illuminating guide to finding one's most powerful writing tool, Finding Your Writer's Voice helps writers learn to hear the voices that are uniquely their own. Mixing creative inspiration with practical advice about craft, the book includes chapters on: Accessing raw voice Listening to voices of childhood, public and private voices, and colloquial voices Working in first and third person: discovering a narrative persona Using voice to create characters Shaping one's voice into the form of a story Reigniting the energy of voice during revision
Book Synopsis Overview of risk-informed decision-making processes by : Enrico Zio
Download or read book Overview of risk-informed decision-making processes written by Enrico Zio and published by FonCSI. This book was released on 2012-10-01 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors introduce the general concepts, definitions and issues related to the use of Risk-informed decision-making (RIDM). These are structured processes which assist decision-makers when faced with high impact, complex decisions involving multiple objectives and the presence of uncertainty. They aim to ensure that decisions between competing alternatives are taken with an awareness of the risks associated with each option, and that all attributes of a decision are considered in an integrated manner. Motivations for the use of these techniques as a complement to more traditional deterministic approaches to risk assessment are provided. The RIDM processes adopted by NASA and by the US Nuclear Regulatory Commission are described in detail, with an analysis of commonalities and differences in approach.
Book Synopsis The Merck Manual of Geriatrics by : Mark H. Beers
Download or read book The Merck Manual of Geriatrics written by Mark H. Beers and published by Merck. This book was released on 2000-08-15 with total page 1507 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique interdisciplinary guide that addresses the challenges of geriatric care, now with a two-color design, all-new illustrations, and many redesigned tables.
Book Synopsis Passion of the Western Mind by : Richard Tarnas
Download or read book Passion of the Western Mind written by Richard Tarnas and published by Ballantine Books. This book was released on 2011-10-19 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: "[This] magnificent critical survey, with its inherent respect for both the 'Westt's mainstream high culture' and the 'radically changing world' of the 1990s, offers a new breakthrough for lay and scholarly readers alike....Allows readers to grasp the big picture of Western culture for the first time." SAN FRANCISCO CHRONICLE Here are the great minds of Western civilization and their pivotal ideas, from Plato to Hegel, from Augustine to Nietzsche, from Copernicus to Freud. Richard Tarnas performs the near-miracle of describing profound philosophical concepts simply but without simplifying them. Ten years in the making and already hailed as a classic, THE PASSION OF THE WESERN MIND is truly a complete liberal education in a single volume.
Book Synopsis Genealogies for the Present in Cultural Anthropology by : Bruce M. Knauft
Download or read book Genealogies for the Present in Cultural Anthropology written by Bruce M. Knauft and published by Routledge. This book was released on 2013-09-13 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the wake of tensions between modern and postmodern sensibilities, what larger directions now emerge in cultural anthropology? In this major work, Bruce Knauft takes stock of important recent initiatives in cultural and critical theory. By combining critical reviews and ethnographic engagements with fresh readings of major figures and approaches, the work develops a larger vantage point for considering the dispersing influence of practice theories, postmodernism, cultural studies, postcolonial studies, modern/post-positive feminism, and multicultural criticisms.
Download or read book Watunna written by Marc de Civrieux and published by University of Texas Press. This book was released on 1997 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in Spanish in 1970, Watunna is the epic history and creation stories of the Makiritare, or Yekuana, people living along the northern bank of the Upper Orinoco River of Venezuela, a region of mountains and virgin forest virtually unexplored even to the present. The first English edition of this book was published in 1980 to rave reviews. This edition contains a new foreword by David Guss, as well as Mediata, a detailed myth that recounts the origins of shamanism.
