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Sunday, June 3, 2012

Metals

Metals account for about two thirds of all the elements and about 24% of the mass of the planet. Metals have useful properties including strength, ductility, high melting points, thermal and electrical conductivity, and toughness. From the periodic table, it can be seen that a large number of the elements are classified as being a metal. A few of the common metals and their typical uses are presented below. Common Metallic Materials Iron/Steel - Steel alloys are used for strength critical applications Aluminum - Aluminum and its alloys are used because they are easy to form, readily available, inexpensive, and recyclable. Copper - Copper and copper alloys have a number of properties that make them useful, including high electrical and thermal conductivity, high ductility, and good corrosion resistance. Titanium - Titanium alloys are used for strength in higher temperature (~1000° F) application, when component weight is a concern, or when good corrosion resistance is required Nickel - Nickel alloys are used for still higher temperatures (~1500-2000° F) applications or when good corrosion resistance is required. Refractory materials are used for the highest temperature (> 2000° F) applications.
The key feature that distinguishes metals from non-metals is their bonding. Metallic materials have free electrons that are free to move easily from one atom to the next. The existence of these free electrons has a number of profound consequences for the properties of metallic materials. For example, metallic materials tend to be good electrical conductors because the free electrons can move around within the metal so freely. More on the structure of metals will be discussed later.

6 Minute SUV Sketch

How to sketch SUV in 6 minute.

Thursday, May 31, 2012

Archimedes

One of the greatest minds of classical antiquity, Archimedes (c. 287 BCE – c. 212 BCE) was a scholastic "triple-threat" who made astonishingly original contributions to mathematics, physics, and engineering. His c.v. includes some three dozen new tools and weapons systems as well as a pioneering role in plane and solid geometry. He even gave scientists and engineers their ultimate catch-phrase, "Eureka!" With all that going for him, Archimedes was no doubt the ancient world's poster boy for science and technology careers, right? Wrong. His famous inventions brought water to arid lands and held invading Roman armies at bay, but he vocally disdained them. Compared to the conceptual rigors of his favorite academic pastime of geometry, engineering and other pursuits that addressed worldly necessities of living were to him "sordid and ignoble." His obsessive interest in mathematical abstractions came at the expense of personal hygiene and earned him a reputation as ancient Greece's first absent-minded professor. He is most widely known for running naked through the streets of Syracuse. One wonders how the man whose brilliant feats of engineering include the compound pulley and the theory of hydrostatics would fare in today's job market. And so it is with Archimedes. With little in the written record to go on, most attempts to chronicle his life invariably comprise some mix of fable, fact, and fudge factor. Unlike his mathematical work, he left few formal treatises behind describing his inventions. Accounts of his life were written decades after his death, and leave plenty of room for uncertainty about his actual accomplishments and the true nature of his character. His own writings disclose that he was born in Syracuse – then a self-governing city-state and the most important seaport on the Greek-controlled island of Sicily. His father was the astronomer Phidias, which could account for his natural bent toward the sciences and one of his primary later inventions, an early planetarium. “Archimedes Thoughtful” was painted about 1620 by Domenico Fetti in Mantua. Presently, the picture is located in the art museum Alte Meister in Dresden, Germany. He spent formative years in Alexandria, Egypt – academic ground-zero during the Hellenic period – where he reportedly worked and studied with the successors of the great mathematician Euclid. It was Archimedes' passion for geometric abstractions that led to his disdain for engineering. Yet he is said to have invented his most lasting practical device – the Archimedes screw – while immersed in these lofty concepts in Egypt. Developed initially to irrigate croplands along the Nile delta, his water screw was also used to drain water from underground mines, to water the Hanging Gardens of Babylon and to pump bilge from the pharaoh's ships. Today it is standard issue in sewage treatment, irrigation, and other applications where it is vital to move large amounts of water with minimal effort.
During Archimedes' lifetime, his most famous inventions, and presumably the bulk of his income, came from his friendship with King Hieron II of Syracuse. Hieron marveled at his mastery and frequently put him to the test. On one occasion, the king asked Archimedes how a great weight could be moved by a small force. The inventor proceeded to demonstrate how, with only a series of compound pulleys, he was able to singlehandedly drag a fully loaded three-mast ship out of the harbor and across the beach. The story of his famous bath, the discovery of the principles of hydrostatics, and the ensuing naked run through the streets is not universally believed, but it is indicative of the close connection between the king and his prize engineer. Millennia before weapons of mass destruction, Archimedes used his unique understanding of mass to cause new levels of destruction with devastatingly ingenious weapons created for his king during the Second Punic War. He developed specialized catapults that hurled blocks of stone and logs at invading ships. He developed the Archimedes claw, a hidden crane with an enormous hook used to raise invading ships out of the water and either flip them upside down or allow them to crash back down into the surf, crashing them to bits. Less certain but no less impressive are the historical accounts of Archimedes' use of giant mirrors to incinerate enemy ships with reflected sunlight. Despite having kept the invading Romans at bay for more than three years, eventually the island colonies on Sicily were sacked in 212 BCE. The Roman emperor had specifically asked that Archimedes be brought back alive, but Roman soldiers found him working on a math problem at his desk and tried to seize him. Mistaking his mathematical tools for exotic weapons, a soldier killed Archimedes on the spot. Archimedes' true accomplishments may be shrouded in the mists of time, but his genius shines through loud and clear today. Michael MacRae is an independent writer.

Maine Constructing 4 MW Commercial Tidal Power Project

Tidal power is one of the renewable energy sources that you hear the least about even though its potential for generating electricity is incredibly vast. The problem is that deploying turbines out into the ocean or rivers can prove to be awfully tricky. But one major project is moving full steam ahead and will be delivering power by this fall. The Maine Tidal Energy Project started construction of the bottom support frame for Ocean Renewable Power Company's TidGen turbine generator system in March. The project's first phase will see five of those generators deployed in the Gulf of Maine with a capacity of 900 kW. That phase should be online by October. The complete project will reach a capacity of 4 MW and already has 20-year power purchase agreements with Bangor Hydro, CMP and Maine Public Service. The TidGen system consists of slowly rotating foils that power a permanent magnet generator at its center. It is gearless and made from composite materials that won't corrode underwater. Written by Megan Treacy on 01/05/12

Jaguar C-X16 to be modeled in clay at Clerkenwell Design Week

From the official Press Release: Skilled clay modelers will be working on a full size model to reveal the artistry involved in sculpting the cars of the future.
Julian Thomson, Advanced Design Director, Jaguar Cars, said: “Jaguar is one of the most technologically advanced companies in the field of product development but we still believe in the sense of artistry. Emotional connections are at the heart of our vehicles and the traditional process of working with clay with some of the best sculptors in the world allows us to refine them into the purest surfaces.”
Joining the C-X16 clay model at the London event are three bespoke sculptures that show the past, present and future of Jaguar. Commissioned by Julian Thomson and painted by two designers from the Jaguar design team the artwork is based on the bonnets of an E-type, C-X16 and C-X75. Just as the specially created creations span Jaguar’s ages, so too do the vehicles on display. The XJ13, created in 1966 and the only one in the world, is joined by an XFR and XKR-S. Designed, engineered and built in the UK, both modern cars demonstrate the very best in British creativity and industry-leading engineering. Clerkenwell Design Week runs in London from 22nd to 24th May 2012. The Jaguar C-X16 clay model, XFR, XKR-S, XJ13 and Jaguar sculptures are all located in the Farmiloe Building.
For more information and for free entry registration you can visit www.clerkenwelldesignweek.com.

Alfa Romeo 8C Spider 3ds Max Tutorial

Software Used: 3ds Max Introduction:
The project, Alfa Romeo C8 Spyder, started as a personal challenge in order to improve my modelling techniques and final renders. The modelling of cars has always attracted and fascinated me, and this is what I specialise in. I have created some car models and the treatment of each finished model is better than the previous one. I choose this model for this personal project because, from the very first time I saw it in a car magazine, my attention was simply drawn to its form. It decided it was time to bring it into the world of 3D!

Exclusive: Renault Twizy design story Part 1

On May 10th we had the chance of participating to the presentation of the Twizy design story, with Renault VP Design R&D and Nissan Synergies Patrick Lecharpy and Renault Design Manager R&D Design Studio Luciano Bove. Both Patrick and Luciano shared many details on the work done on the car, not only in term of design, but also carrying out a complete reorganization of the concept development process, which resulted so successful that it is now adopted by the whole Renault R&D Design Studio.
This design story is particularly interesting given the unconventional nature of the Twizy, and it shows how a new concept was created from scratch, from the initial briefing to the final road tests. Patrick and Luciano also gave many tips and suggestions for design students and aspiring designers. We have collected them in an upcoming exclusive article, so check back soon on these pages! The context: innovation and new markets
Patrick Lecharpy starts by underlining the importance of innovation: “The history of car design shows that the big successes for the automobile industry comes from innovation, and that represents an investment and a risk for a company.” “When you are innovating it is important to identify where the Blue Oceans are, i.e. where nobody is. This doesn’t mean there are no customers, it just means there are no answers for customers’ needs.” “So you can decide whether to be in Red Oceans – where there is a huge amount of customers but also many competitors – or to be in Blue Oceans and try to create a new market.” The initial goal was not only to explore a new concept of mobility and make it available to the general public, but also to search a new way for bringing original ideas into production. “A few years ago Carlos Ghosn stated that in the future Renault would focus on the production of electric cars, which was initially greeted with some skepticism. “According to his analysis from 2020 the cost of fossil fuel would be extremely high and electricity would be less costly for daily use.” Based on this, Renault designers started to research in this field, and this investment eventually resulted in the presentation of a complete range of electric concepts (Twizy, Fluence, ZOE and Kangoo ZE Concepts) in 2009, all aimed at envisioning series production models.
Briefing and initial concept While the other three projects were centered around the design of family vehicles, for the Twizy the development team was given much more freedom, in terms of both technical specifications and organization. The initial goal was to offer a new solution for the urban commuters’ needs. Patrick explains: “According to statistics data, the average number of occupants per car is just 1.4 and the average distance traveled each day is about 60 km.
“Based on this information, the idea was to design a single-seat, four-wheeled vehicle that provided a minimum range of 80 km” The vehicle needed to be safe, affordable, agile and fun: each of these requirements influenced the choices made during the first phase, where the basic layout of the Twizy was outlined.
Luciano Bove explains: “We understood that it was not so important for the car to be extremely sophisticated. It was more important to achieve a feeling of energy, agility, a good balance between costs and quality and also a sense of motorcycle-like freedom.” The need for safety led to the idea of providing a car-like protection: this translated into a four-wheel layout. In order to reinforce the feeling of safety, the target driving position had an eye-level comparable to that of a Twingo. Having a car-like safety also led to incorporate the “half doors” on the sides, while the original concept was doorless: their purpose is to provide protection in case of side impacts. The basic vehicle layout consisted of a low-positioned large battery pack for maximum stability and an upper passenger safety cell inspired by helmets and aluminum building structures. True to the briefing, the cabin was mainly developed for one, with the possibility of accommodating an additional passenger if needed. The need to keep costs low led the Renault team to avoid complex dynamic systems such as leaning wheel suspensions.
For the “fun” part, raising emotional reactions was another interesting challenge. Luciano Bove comments: “When designing the Twizy one of the starting requirements asked by the product planning in the briefings was to create an emotional driving and to offer an outstanding experience. This reflected in our sketches, that communicated the impression of unique driving experience.” “Taking inspiration from modern three-wheel scooters, we also tried to incorporate a very strong connection between driver and machine.”
Styling The Twizy project was unconventional also in terms of look. Patrick explains: “When dealing with a new concepts we had two options ahead: to follow the conventional styling trends of automobile design or to search for a different imagery and look.” “With the Twizy we wanted to reach new customers, not necessarily attracted by conventional design.” The need for a distinctive look was also aimed at meeting the needs and tastes of customers different from the ones targeted with the Zoe, and this reflects in the research sketches, mostly created by designers Francois Leboine and Eduardo Lana. “Given the nature and the performances of the car we deliberately decided to avoid a sporty look that would evoke speed. We stayed true to the brief of creating a design that would express dynamism, fun and joy, while being appealing to both female and male customers.” The final look of the Twizy Concept also incorporated a number of distinctive styling elements which contributed to express its diversity as well as to raise fun, curiosity and expectation for something new to happen. On the exterior, these included the distinctive wheel covers and the LED screen face, capable of communicating emotions. The interior of the featured a range indicator inspired by lotus flowers, with petals that close progressively as the range decreases, which was another hint at rising positive emotions. A new organization
The development of the Twizy concept took just nine months, compared to a standard period of about 2 years. This result was enabled by the implementation of an innovative organizational structure, necessary for such an unconventional project to be accepted for production. When developing a new vehicle, car companies usually establish a dedicated technical platform consisting of a Director and a large number of managers, each responsible of a different aspect.
Then, the initial development is generally carried over in sequential phases: product planning, design and engineering. For the Twizy Renault decided to take a different route. Patrick Lecharpy explains: “We decided to integrate these three phases into a single organization, where the three areas of competence – each consisting of just about 15 people – would work at the same level in a more dynamic and integrated process.”
This helped each member of the team to have more responsibilities, and allowed to cut bureaucracy and bouncing decisions Luciano Bove adds: “We avoided the risk of having too many discussions between different departments, which would have delayed the process and ultimately increased the costs.”