30 mar 2013

TIPOS DE ACERO Y SU PRESENTACIÓN COMERCIAL - TABLAS PARA SU SELECCIÓN


TIPOS DE ACERO Y SU PRESENTACIÓN COMERCIAL - TABLAS PARA SU SELECCIÓN 

A pesar de que hoy en día se pueden encontrar en el mercado herramientas computacionales (CAD) que son un apoyo para muchos estudiantes y profesionales envueltos en las actividades propias del diseño y desarrollo de máquinas, aún se requiere de mucha información de detalle que debe ser suministrada por el diseñador para que, el software ejecute las operaciones y para que el diseño cumpla con los requerimientos funcionales, estéticos y de desempeño deseados; esta información está íntimamente asociada a: a) la selección de los materiales, basados en sus propiedades (físicas, químicas, etc.) y a las características dimensionales de los materiales ofrecidos en el mercado local,  b) a las restricciones y operaciones requeridas para alojar adecuadamente los elementos comerciales y c) el apego a los estándares universalmente aceptados.  La selección del material por lo tanto involucra elegir aquel que tenga las propiedades mecánicas tales que, junto con la dimensión final de la pieza, pueda soportar las cargas a las que estará sometida la pieza en operación; sin embargo la selección del material también está relacionada con las existencias dimensionales en el mercado, una mala selección puede involucrar operaciones excesivas de maquinado y conducir, a pesar de su funcionalidad, a piezas costosas debidas a las excesivas operaciones de maquinado y al tiempo que se toma el realizar estas.

El libro: "Tipos de acero y su presentación comercial - tablas para su selección", es un prontuario para la selección comercial de los aceros; en él se ha incluido la mayor cantidad de información sobre los aceros comercialmente disponibles en Colombia y en los países de la comunidad andina. Este libro será una herramienta de consulta obligada para todos los técnicos o diseñadores mecánicos en la etapa de selección de los aceros a utilizar en sus diseños.

Aquí se puede acceder al sitio donde se puede comprar el libro:Tipos de acero - Tablas para su selección





28 mar 2013

Colombian Team Rides to Victory at the Human Powered Vehicle

Colombian Team Rides to Victory at the Human Powered VehicleMore than 40 engineering students from three countries gathered in Caracas, Venezuela, last month to put their design skills to the test during the 2013 ASME Human Powered Vehicle Challenge Latin America. Six teams competed at the event, which took place at Universidad Simon Bolivar from Feb. 22-24.More than 40 engineering students from three countries gathered in Caracas, Venezuela, last month to put their design skills to the test during the 2013 ASME Human Powered Vehicle Challenge Latin America. Six teams competed at the event, which took place at Universidad Simon Bolivar from Feb. 22-24.

Colombian Team Rides to Victory at the Human Powered Vehicle Chalenge LatinoAmerica - by ASME News


ASME's Human Powered Vehicle Challenge (HPVC) provides an opportunity for students to demonstrate the application of sound engineering design principles in the development of sustainable and practical transportation alternatives. In the HPVC, students work in teams to design and build efficient, highly engineered vehicles for everyday use — from commuting to work, to carrying goods to market.
The four-member team from Universidad de Los Andes in Bogota, Colombia, was the big winner at the competition, placing first overall as well as first place in the endurance and men's speed events and the design and innovation categories. In the women's speed event – the only category the Universidad de Los Andes didn't dominate – the team finished second. At the end of the three-day competition, the students had amassed six trophies and $1,400 in prize money.
The 14-member team from Instituto Tecnologico de Morelia placed second overall at the HPVC Latin America, taking home a trophy and the $500 second prize, while three students from Instituto Tecnologico de Ciudad Juarez in Juarez, Mexico, came in third overall and received a trophy and a $300 prize.
The three other schools participating in the competition were Universidad del Zulia of Zulia, Venezuela, Universidad Michoacana de San Nicolas de Hidalgo of Michoacan, Mexico, and the host university Universidad Simon Bolivar.
In addition to the Latin America event, ASME holds two other HPVC competitions: HPVC East and HPVC West. HPVC East will take place at Ferris State University in Big Rapids, Mich., from April 26-28. The location and dates for HPVC West are to be announced soon.
For more information on ASME's Human Powered Vehicle Challenge program, visitwww.asme.org/events/competitions/human-powered-vehicle-challenge-(hpvc).

22 mar 2013

Factors to Consider for a Successful DFA

Factors to Consider for a Successful DFA



Design for assembly (DFA) is an ongoing struggle to balance assembly, fabrication and layout. The layout designer strives to create a product with ease of assembly in mind. The easier the product is to assemble, the cheaper the final product. In order to design the best assembly, the layout designer needs to understand the fabrication limitations of the components and the fabrication shop. The layout designer is a mediator between the requirements of the engineer, the fabrication shop abilities and the needs of assembly.

General
DFA is more than placing components at a safe distance from one another. The small pitch components of today are pushing the limits of fabrication tolerances. Understanding the fabrication shop’s minimum soldermask webbing is crucial for footprint development. Copper land patterns should take soldermask webbing into account. Oversizing the width of the pin footprint should not eliminate the soldermask webbing. Combining the pins into one soldermask opening is called soldermask ganging. Soldermask ganging increases the likelihood of shorts between the pins during assembly. Avoid ganging soldermask when possible.
Vias are a major factor in testability and DFA. Vias that are too close to a pin do not allow a soldermask webbing. The absence of the webbing will starve the solder from the pin. The paste will travel through the via and short components on the opposite board. Vias should be exposed for testability. Adequate clearance from pins allows test probes to reach the via and allows a soldermask web. Vias are concern for cold solder joints as well. On a multi-lamination board with four or more ground fills, a direct connect via can absorb the heat into the planes and cause cold solder joints.

Figure 1 - Solder bridge caused by an inadequate soldermask between a pad and via on the opposite side of the board.
Figure 1 shows a solder bridge caused by inadequate soldermask between a pad and via on the opposite side of the board. The pin also suffered from solder starvation since the solder was wicked away from the pin. The solder that was wicked away caused a short fount under connector in the image. Shorts of this nature are difficult to find since components must be removed to debug.

Read the full article in: http://www.pddnet.com


21 mar 2013

Unleashing Engineering Creativity: The Kano Model

Unleashing Engineering Creativity: The Kano Model


by Joe Berk


ow do we decide which features to include in new products? That’s a great question. If we miss important features or include unnecessary features, customers will reject our products. If we include unexpected and exciting features, though, we can delight customers and jump ahead of the competition. Dr. Noriaki Kano addressed this key creativity issue by identifying four product attribute areas:
  1. Threshold Attributes. These are attributes customers expect without knowing it. They will know when they are absent, though, so they must be included.  
  2. Performance Attributes. Performance attributes are minimum known customer requirements. Design teams certainly need to meet these, but their presence is not sufficient for assuring a competitive advantage. 
  3. Unnecessary Attributes. These are features that customers don’t want. They actually work against a purchase decision because they add complexity and cost.
  4. Excitement Attributes. In the creativity world, this is where success resides. Excitement attributes surprise and delight customers. When customer experience excitement attributes, the impact is immediate and dramatic: They want the product. These attributes differentiate your product from the competition.
The Kano model shows threshold, performance, and excitement attributes as a function of customer satisfaction:
The Kano Model.  The model shows customer satisfaction for excitement, performance, and threshold attributes as a function of how well each is executed.  Excitement attributes offer the greatest customer satisfaction and clear competitive advantages.The Kano Model. The model shows customer satisfaction for excitement, performance, and threshold attributes as a function of how well each is executed. Excitement attributes offer the greatest customer satisfaction and clear competitive advantages.
The Kano model’s messages are clear:
  • Customer dissatisfaction increases sharply when threshold attributes are missing, but when threshold attributes are met, satisfaction doesn’t experience much of an increase. We just don’t get excited when products meet minimum expectations.
  • The relationship between customer satisfaction and performance attributes is linear. We get increases in customer satisfaction as we meet performance attributes, but it is not dramatic. Satisfying these expectations is expected, but not exciting.
  • Excitement attributes increase customer satisfaction exponentially. We get more bang for our creativity buck as we include well-executed excitement attributes.
  • Attributes migrate and have less effect on customer satisfaction over time. This is true for excitement, performance, and threshold attributes, but it is especially true for excitement attributes.   What was exciting yesterday is not so exciting tomorrow.  
Understanding the different attributes is easier with examples.....
   
Read the full article in: http://www.pddnet.com

20 mar 2013

Why user-centered design is not enough

Why user-centered design is not enough
by John Wood

Vitruvianischer_Mann.jpgVitruvian Man by Leonardo da Vinci via Wikimedia Commons
Utopia or Oblivion?
Buckminster Fuller framed this question in his 1993 book of the same name, warning that mankind's prospects would go decisively one way, or the other. Twenty years on, it is clear that nobody could have answered his question with any certainty. This is because we are all entangled in it. Fortunately, most of us have heard of the butterfly effect, so we are slowly realising that each one of us has some responsibility for what happens. What does this mean for 'UCD' (User-Centered Design)?

Putting The User at the Center
In 1966, Joseph Weizenbaum created ELIZA, a computer program for diagnosing medical conditions. It conversed with patients directly, via screen-based questions in everyday language. But it did it so cunningly that most correspondents thought they were talking to a human being. The question and answer routine was based on the psychotherapeutic approach of Carl Rogers, best-known for developing an extremely patient-centered approach. Technologically speaking, the program was very simple. First, it addressed the respondent using her first name, asked open-ended questions about their state of health and incorporated some of their own words in its answer. The strategy worked so well that users were convinced they were talking to a sympathetic doctor, rather than a machine.

 .... Read the full article in: http://www.core77.com/

19 mar 2013

Making “cheap” products look expensive


Making “cheap” products look expensive

For everything from coat hangers to cars, industrial designers use tried-andtrue tricks to make economical products look expensive. For example, how do designers create an attractive coat hanger for mass production that can be sold for $15 each? To start, they use an inexpensive hardwood with a highgloss finish and use simple pegs that require minimal tooling to hold the parts together. They also design hangers to be lightweight to keep down shipping. Those tips alone helped designers create a coat hanger that’s been bought by the hundreds of thousands at big-box stores.

Some companies such as housewares supplier InterDesign in Solon, Ohio, demands this simple, modern approach. That’s why the housewares section at your local Target features so many low-cost items with trendsetting finishes and textures, sleek styling, userfriendly operation, and colors that work well together.


Target recently selected InterDesign’s Buzzo rack for its Cool Stuff Collection. The rack is made of stylish silver-plated, low-carbon steel wire and wood balls. The bars are flattened and pierced for a cost-effective, yet elegant mount. Designers extended the line simply and inexpensively by adding a twohook rack with the same distinct look as the larger four-hook rack.

 .... Read the full article in: http://machinedesign

18 mar 2013

Reverse engineering for a gearbox.

Reverse engineering for a gearbox.

One of the tools that can be most useful for teaching design and how things work to high school students or first-semester engineering, is the reverse engineering. Reverse engineering ( sometimes also called product dissection) is a redesign methodology. This means it is a design process that can be applied to an existing product, a prototype or a detailed concept. This is a process that uses a variety of techniques in the form of models, diagrams, patterns and normative theories to dissect and understand a product fully.

Concisely formulated, reverse engineering process begins the redesign of a product, where this is observed, disassembled, analyzed and documented in terms of its functionality, shape, physical principles, manufacturability and it ability to assemble
. The initial intention of this process is to understand and fully represent the current state of the product.

Dissection of products and benchmarking procedures are commonly used in industry to improve product design and quality to produce a superior performance. When applied properly in college in undergraduate, these procedures can improve the process of engineering design education.

In this video you can see some mechanical engineering students at the Universidad Tecnológica de Pereira, making disassembly phase of an exercise in reverse engineering a gearbox of a car.


17 mar 2013

Aloe Vera gel portable extraction machine

Aloe Vera gel portable extraction machine
Machine for the extraction of Aloe vera gel. This machine extracts aloe vera gel, maximizing content extraction while maintaining acceptable levels of contamination. Some key features of the machine are:
1. Adjusting to the dimensions of aloe vera leaves.
2. Your quality of portable, which allows it to be carried to almost the crop itself, all you need is a power source to 110V
3. Low cost of construction, operation and maintenance.
This machine was designed in Colombia, at the Universidad Tecnológica de Pereira.


15 mar 2013

Cutting processes - tolerance and surface roughness


Cutting processes - tolerance and surface roughness

Here's a useful table of tolerance and surface roughness achievable with cutting and machining process (collectively termed "material removal processes"

This information has been collated personally by myself from a variety of sources. If you have any suggestions of processes to include in this table please leave a comment and they will be added.



Tolerance (mm) Surface roughness (µm)
Process name min max min max
Electro- discharge wire cutting 0.01 0.125 0.1 30
Band sawing 0.8 3 0.8 45
Circular sawing 0.2 3 0.8 45
Cropping/guillotining 0.2 2 0,1 12.5
Sheet metal 0.01 1 0,1 12.5
Sheet metal (non-tooled) 0.01 1 0,1 12.5
Water jet cutting 0.1 0.25 3.2 27
Oxyfuel gas cutting 0.8 2 6.3 71
Plasma arc cutting 0.5 2.54 12 128


Read the full article in: http://www.mechanicaldesignforum.com

14 mar 2013

Aluminum Aerospace Coating May Replace Toxic Chromates


Aluminum Aerospace Coating May Replace Toxic Chromates

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A materials engineering research team at the University of Nevada, Reno has developed an environmentally friendly, self-healing coating for the aluminum used in defense and aerospace applications. The coating is designed to replace the highly toxic chromate conversion coatings that have been used for more than 50 years to protect aluminum and aluminum alloys from corrosion.
The research team presented its findings at the international Pacific Rim Meeting on Electrochemical and Solid-State Science in Honolulu. "It was well received at the conference," Dev Chidambaram, lead scientist and assistant professor of materials science and engineering at the University of Nevada, told the university's Nevada Today.

Since the 1980s, researchers have been working on nontoxic replacements for coatings that use chromates, a class of carcinogenic substances made famous in the 2000 movie Erin Brockovich. They have been banned in consumer and automotive applications, but some defense and aerospace applications are still exempted. That's because nontoxic replacements with equivalent performance have not been found, and the risks associated with failure from corrosion in those applications is high.

Read the full article in: http://www.designnews.com

13 mar 2013

Afterlife: An Essential Guide To Design For Disassembly


Afterlife: An Essential Guide To Design For Disassembly


by Alex Diener

The iron was on, but the plate was cool to the touch. The realization set in that after two short years of service, the thing was dead.
I remember seeing Granddad fix all sorts of household appliances growing up, tinkering and cursing for hours before yielding a re-functional product. So, I, too, set the iron on my workbench to revive it. Right off the bat, I knew this wasn't going to be easy. All of the screws on the outside had a proprietary head design. After some careful work with a needle nose, they were out, but the plastic shells still wouldn't come apart. I pried with screwdrivers, torqued on handles, pulled on snap fits. After finally getting to the metal base, I found it covered in epoxy. By the time all was said and done, my iron lay in a dozen broken pieces on the counter, and I cursed the work of my profession.
Profoundly frustrated by this experience, I disassembled the same iron once more, documenting each step to illustrate the pain. Armed with the knowledge from my disastrous first try, it was a bit easier, but still took 67 steps to separate 52 parts. Design for Disassembly (DfD) could have prevented this mess.

What is Design for Disassembly?
Design for Disassembly is a design strategy that considers the future need to disassemble a product for repair, refurbish or recycle. Will a product need to be repaired? Which parts will need replacement? Who will repair it? How can the experience be simple and intuitive? Can the product be reclaimed, refurbished, and resold? If it must be discarded, how can we facilitate its disassembly into easily recyclable components? By responding to questions like these, the DfD method increases the effectiveness of a product both during and after its life .....


Read the full article in: http://www.core77.com



12 mar 2013

The Worth of Work


 The Worth of Work


Most professional engineers work for pay, and that leads to an interesting question:  which is more important, the work or the pay you get for it?  I bring up that question after reading an essay on work by the well-known medievalist C. S. Lewis. 
In the essay, Lewis distinguished between two types of work.  The first type is work that is worth doing for its own sake.  Some professions are automatically included in this classification:  teachers (Lewis was a professor at Oxford), doctors, pastors, and other members of the helping professions, for instance.  As long as members of these groups do their work faithfully and competently, they should have no problem looking themselves in the mirror and saying, “I’m glad I do what I do, because it makes the world a better place.”  There are other types of work that can fit into this first category, and I’ll get to those in a minute.
The second kind of work is done merely to get a paycheck.  The thing you do for the paycheck is almost irrelevant:  it is simply a means to the end of getting money.  Now there is nothing intrinsically wrong about earning money.  In a fallen world, money and economics are inescapable aspects of existence.  But if you make money your No. 1 priority and aren’t too particular about how you get it, you can end up doing things that, at best, are unnecessary .....

Read the full article in:  http://engineeringethicsblog.blogspot.com

11 mar 2013

How to become a freelance engineer


How to become a freelance engineer




I dipped my toe in the freelance pool as an independent designer in 2007, the same year I graduated from college with a degree in a mechanical engineering.

As you know, 2007 was an awesome year to graduate. Jobs were plentiful! (cough cough, “there were no jobs”) So what is a fresh grad, or even a seasoned engineer, to do when it comes time to join the freelance hurd? Crowdsource my friend!

During my senior year of school I worked for a community college, helping with day-to-day tasks for a new entrepreneurship program. In one of the classes they hosted, I learned about the basics of starting a portfolio which led me to Elance.com. Back in the day, Elance.com was saturated with requests for quotes for graphic design and data entry services. However, there was a tiny sliver of CAD and product development work to bid on. So I decided to take the money I was going to spend on grad school and invest in homemade business cards, a laptop with a sick graphics card, and a basic CAD program. Then I held my breathe and dove head first into the world-wide web.

I knew I needed a portfolio of projects to build my business  .....

Read the full article in:  http://blog.machinedesign.com

9 mar 2013

CAD Mobile Products

Aquí se presentan algunas de las aplicaciones móviles que uno de los proveedores de software CAD ha desarrollado para dispositivos móviles. La mayoría de estas son gratis, por lo que los invitamos a descargarlas y probarlas. En otras publicaciones incluiremos mas aplicaciones.

http://usa.autodesk.com/adsk/servlet/pc/index?siteID=123112&id=16953811


Here are some mobile applications that a supplier of CAD software developed for mobile devices. Most of these aplications are free, so we invite you to download and try. Well include other publications with more applications.

http://usa.autodesk.com/adsk/servlet/pc/index?siteID=123112&id=16953811




8 mar 2013

Ball Bearings: Guide to selection, applications & calculations


In this new edition, I have come up with accuracy, operating temperatures, re-lubrication features along with applications, utility and system of operations recommended by American Society of Mechanical Engineers (ASME). You can also observe reflections of rules abiding ANSI/API standards putting a significant relevance with bearing operations from maintenance point of view.

Introduction
For Pumps used in Petroleum Industries and Gas Industries, we have some standard statements meant to be followed:-

Each Shaft shall be supported by two radial bearings and one double acting Thrust Bearing which may or may not be combined with one of the radial bearings. This means, The thrust bearing may or may not be in the same axis as the rest of the two radial bearings. In other words, it can also said as, the thrust bearing can be arranged in such an order that, it may or may not be a part of the system bearing calculation although supporting the shaft.

Here, there can be only three possible system of arrangements,
  1. Rolling Element radial and Thrust.
  2. Hydrodynamic radial and rolling element thrust.
  3. Hydrodynamic radial and thrust.


Deep Groove Ball Bearings
Application: Deep Groove Bearings are used for small diameters with radial and axial loads.

Fig.1: Deep groove ball bearings

Bearings I.D: For any designated no. in any bearing company, the bearing I.D. is equal to 5 times the last two digits.


Read the full article in:  http://www.mechanicaldesignforum.com 


7 mar 2013

Suscribirse al blog

Si le parecen útiles las entradas publicadas en el Blog, puede seguirlo en su correo, para eso inscríbalo en la casilla ubicada en la parte inferior izquierda del blog (arriba de la frase de la semana) y recibirá las últimas noticias en su correo ( no propagandas)


Students may rely on calculators to bypass a more holistic understanding of mathematics, researcher says.

Students may rely on calculators to bypass a more holistic understanding of mathematics, researcher says November 12, 2012 calculator Enlarge (Phys.org)—Math instructors promoting calculator usage in college classrooms may want to rethink their teaching strategies, says Samuel King, postdoctoral student in the University of Pittsburgh's Learning Research & Development Center. King has proposed the need for further research regarding calculators' role in the classroom after conducting a limited study with undergraduate engineering students published in the British Journal of Educational Technology. 

"We really can't assume that calculators are helping students," said King. "The goal is to understand the core concepts during the lecture. What we found is that use of calculators isn't necessarily helping in that regard." 
Together with Carol Robinson, coauthor and director of the Mathematics Education Centre at Loughborough University in England, King examined whether the inherent characteristics of the mathematics questions presented to students facilitated a deep or surface approach to learning. Using a limited sample size, they interviewed 10 second-year undergraduate students enrolled in a competitive engineering program. The students were given a number of mathematical questions related to sine waves—a mathematical function that describes a smooth repetitive oscillation—and were allowed to use calculators to answer them. More than half of the students adopted the option of using the calculators to solve the problem.

 "Instead of being able to accurately represent or visualize a sine wave, these students adopted a trial-and-error method by entering values into a calculator to determine which of the four answers provided was correct," said King. "It was apparent that the students who adopted this approach had limited understanding of the concept, as none of them attempted to sketch the sine wave after they worked out one or two values." After completing the problems, the students ……

Read the full article in:  phys.org 

6 mar 2013

Be more productive


I love technology that makes me more efficient. Here are some productivity aides I recently discovered. (Some are free. I have no financial interest in any.)
Workflowy.com. I started using this “cloud-based outliner of unlimited dimensions” about a month ago, and am moving more and more things into it — my journal, meeting notes, various collections, such as quotations I want to remember, and more. The site is for text, not images. I can access it from my desktop, smartphone, or iPad, and it works quickly and conveniently on all those devices.
Workflowy has a really fast search. You don’t have to remember where you put things; just search on any word you recall.
The site also supports tags. Tag anything with an “#” or an “@,” followed by a word or phrase, and you can retrieve everything associated with that mark. For example, click on any “#movie” to see all the entries that have that tag in them. Users can filter and output results in a variety of formats. Workflowy.com is free. A small annual fee adds a couple of features.
Toodledo.com. I have not encountered a better, easier-touse, less-obtrusive to-do list manager. It is cloud based and has apps for most smartphone and plug-ins for most browsers; I use Chrome now, and have used the site on Firefox.
Toodledo works with Google Calendar and others, so your tasks and projects show up on their assigned dates. It has extensive search functions, customizable fields, alarms, unlimited notes, a flexible hierarchy (project/sub-project/ task/sub-task, if you like), and sorting. Of course, to-dolist programs don’t make you do things. But Toodledo.com makes it easy and fast to create tasks and let you find them later. I like that.
Evernote.com. I use this to grab Web pages I want to keep. Evernote stores them both on my machine and the Web, so I can access the pages from my smartphone or iPad . It supports tags and has an excellent search function, so even ....

Read the full article in: http://machinedesign.com

5 mar 2013

Toying Around with engineering. - Jugando un poco con ingeniería


When you think about MIT, many things may come to mind. New mathematical formulas. High-level cryptography. But what you probably don't think of are toys.
However, in the MIT Toy Lab, as you might imagine, toys are exactly what students are thinking about. Professor David Wallace and a then-doctoral student Barry Kudrowitz started it together back in 2006. Beginning with a question of what students could relate to, it wasn't farfetched to believe toys would fit the bill. An early result of the lab? The Nerf Atom Blaster. Yes, they actually were part of a product getting to market but that, Wallace assures, is not the main focus. "We're teaching product design and our goal is to try and give skill sets and be technical innovators," Wallace says.
Still, that's not to say fun is nonexistent. Steven Keating, a course instructor for the lab, excitedly explains about the toys: "There was one called the Techno Turtle, a DJ-like sequencer that could program musical notes on the back of a turtle and would play it back to you and spin. Another toy made with the idea was you could become a spy and navigate through a laser maze by setting up emitters and detectors, and if you broke a beam, the alarm would go off…Or we did a ....
Read the full article in: http://www.asme.org

4 mar 2013

Practical protection of motion designs and workers


Safety hazards associated with moving machinery can be reduced or eliminated with articulating physical barriers and torque limiters. Key to this undertaking are detailed analyses and engineered solutions.
Isolating pinch pointsScissor-lift mechanisms, tilt tables, and similar equipment represent potential sources of injury because pinch points can be created when these mechanisms move. One way to protect against these hazards is to enclose moving parts with bellows that deter personnel from reaching into hazardous areas — yet permit machinery motion. Other benefits are improved machinery aesthetics and protection against dust, debris, and foreign objects.
In one iteration, heavy-duty accordion- type skirting is made from rigid PVC coextruded with flexible high-cycle polymer hinges and fabricated corners. The resulting rigid, movable cover is suitable for lift tables and verticalmotion applications. Vents allow uniform airflow during operation, while tie strips guarantee proper expansion and retraction.

Read the full article in http://machinedesign.com

3 mar 2013

Podcast: Designing Medical Devices Using Computational Modeling

Arthur G. Erdman, the Richard C. Jordan Professor, Morse Alumni Distinguished Teaching Professor, and Director of the Medical Devices Center at the University of Minnesota, talks with Chitra Sethi, managing editor of ASME.org about the history, current status, and benefits of using computational models for designing medical devices and the need for standardization of these computational modeling techniques.

Ver el Podcast en: http://www.asme.org/kb/news---articles/media/2011/05/designing-medical-devices-using-computational-mode

Esto es impresión en grande


En el 2014 llegará el primer edificio impreso en 3D

edificio impreso en 3d
Las impresiones en 3D son realidad y lo hemos podido ver en el CES 2013 con las carcasas impresas para iPhone que se hacían con la Sculpteo 3D. Después de esto no sería raro que comenzáramos a ver edificios que se construyan a partir de impresiones en 3D y eso es lo que está planeando hacer un arquitecto con la esperanza de que esto esté listo para el 2014.
Ver noticia completa en http://dreknoun.net

1 mar 2013

La Maestría en Ingeniería Mecánica de la Universidad Tecnológica de Pereira, invita a conferencias magistrales con el conferencista C.CIRO IGLESIAS CORONEL, los días 06 y 20 de Marzo de 2013.