3D Printers Give New Life to Old Recordings

You know that 3D printers are being used to “produce” everything from parts of weapons to prosthetics, but have you heard of its usage in recordable technology?

The application of 3D printing in restoring old recordings is unheard of. But 3D printers are simply revolutionizing the industry of sounds.

nov13_c_RECORDINGIn this case, 3D printing technology has been applied to restoration. Researchers from the Lawrence Berkeley National Laboratory (LBL) have used 3D scanning technology to restore some century-old recordings made by three notable inventors that include Charles Sumner Tainter (inventor of an early telephone transmitter), Alexander Graham Bell, and his cousin Chichester Bell. These three inventors collaborated to bring about what was considered high-fidelity for audio systems (notably their graphophone) back in the 1880s. The team experimented using various mediums for their recordings that included discs and cylinders made from beeswax and cardboard, brass, and glass. Finally, they succeeded in making a series of recordings (more than 200 of them) on glass-based discs, which were sent to the Smithsonian in an effort to preserve them. However, they never sent the playback device needed to listen to the discs which were then considered useless and left to decay.

Decay they did – until the research team from LBL got hold of them. They brought them back to life through restoration and were able to play the recordings 125 years after they were made. To accomplish this, the team employed the use of a 3D scanner, known as IRENE, to non-invasively scan the discs and create a high-resolution image. They then processed the digital image, which pieces together the damaged disc and removes errors. The Lab used specialized software for calculating and recreating the engraving method (in this case, a stylus used to etch the glass/wax) to reproduce the audio into a digitized format. The team was successful at recovering the audio from six Volta Graphophone discs – it is looking to restore and preserve a host of early recordings from the Library of Congress. While giving new life to old technology, using 3D scanning is certainly impressive, 3D printing is capable of converting the latest technology in audio into a medium which very few still use.

Footwear – Changing styles through the decades

1910s: The First World War of 1914-1918 saw millions of men going to fight around the world. With women filling the jobs left vacant by the men’s absence, a desire for more practical women’s shoes for use in the factories was born. However, as shortages started to bite, the idea of being wasteful was severely criticized. With a lack of fabrics, dresses became shorter and the same design of lace-up boot that had been worn at the turn of the century was now viewed as practical rather than ‘old-fashioned’.

Suede became popular, and ballet-style pumps were decorated with a variety of removable buckles made from steel and decorated. Once peace was declared, fashions quickly changed in an effort to throw off the depression of wartime austerity.

1920s: This decade witnessed incredible changes in fashion in general – more liberal views on acceptable dress codes were forged. Dance crazes like the Charleston, which demanded a securely-fastened shoe with a low heel and a closed toe, influenced standard shoe design tremendously.

The discovery of ancient Egyptian Pharaoh Tutankhamen’s tomb in 1922 served to encourage a love of all things exotic, and this was reflected in shoe designs of the age. Brilliantly-dyed leather, metallic finishes and bright fabrics were used to create never-before seen designs, and rich brocades, satin, silk and velvet were often embellished with metallic overstitching, embroidery and fake gemstones. Heels were often decorated with crystals, often in Art Deco designs.

1930s: This was a decade that saw the world plunged into a financial depression after the US stock market crash of 1929. As in the First World War years, footwear needed to last longer and somber colours such as black, brown, maroon and navy blue became standard.

1940s: With the Second World War dominating everyone’s life for much of the decade, it was viewed as unpatriotic to be very fashionable during such a time of shortage. In much of the world, leather was reserved for military use, so shoemakers had to show initiative in their choice of raw materials. Reptile skins and mesh became popular alternatives.

1950s: After the war, optimism was high and stiletto heel, one of the great icons of fashion footwear, gained a massive following during the early part of the decade. Flat pumps based on the ballet shoe regained their popularity, and were quickly available in an incredibly diverse colour range.

1960s: Young people suddenly found themselves with more money to spend. This led to a decade of tremendous change, with highly experimental styles of fashion, music, art and literature. Hot pants and miniskirts took the Western youth market by storm, with flat-heeled high boots proving particularly popular. The hippie culture also became a major fashion and, as the race to be the first on the moon accelerated, new metallic ‘space-age’ materials (including coated plastic) were increasingly used by the world’s shoemakers.

1970s: Celebrities dressed to shock in the 1970s, with punk and glam rock encouraging dramatic styles that quickly found their way onto the high street. The birth of disco demanded comfortable dancing shoes, and strappy sandals became the choice of millions.

1980s: A new group of ambitious consumers with money to spend – well-paid young professionals nicknamed ‘Yuppies’ – looked to designer labels to emphasis their wealthy status in life, and retailers were only too pleased to supply just what they wanted. Many ‘new’ styles were actually updated versions of popular shoes from the 40s and 50s, with menswear influencing women’s fashions in the form of lace-up brogues.

1990s: While some glittering styles continued to hit the high street, the excesses of previous decades were replaced by more somber designs before the end of the millennium. A number of shoe fashion revivals took place, with 1970s-style chunky platform shoes regaining their popularity and pastel-colored ballet pumps once again proving to be a best buy.

2000s: Heels began to rise once more at the beginning of the 21st century, and the popularity of designer labels showed no signs of flagging. Embellishment of shoes with crystals, beads, embroidery   and exotic leathers arrived yet again – and has since proved to be a regular part of the footwear designer’s palette.

In the Middle East, heels were added to shoes to lift the foot from the burning sand.Pointed toes on shoes became symbol of wealth and power in Europe. They remained mostly in fashion between 11th and 15th century World’s biggest feet belong to Brahim Takioullah. . His shoe measures 40 cms in length (European shoe size: 58) and was produced at a cost of nearly 3000 Euros. At 8’1”, he is also the second tallest man alive.Penny Gold, a retired teacher, who lives in Florida, owns a staggering 733 pairs of converse sneakers. She has spent 15 years and $15,000 on her collection.

Most expensive shoes: Judy Garland’s ruby red slippers, used by her in the 1939 movie, “The wizard of oz”, remain the highest paid slippers ever auctioned – the winning bid was for $665,000.

Largest pair for shoes: One of the main attractions of Marikina, Philippines is the World’s Largest Pair of Shoes. It is located and displayed at the Riverbanks Center. The shoes measures 5.29 meters long, 2.37 meters wide and 1.83 meters high. The heel of the shoe was measured 41 centimeters or 16 inches. The shoes were made in the year of 2002. This was displayed for the First Sapatero Festival.

Courtesy: www.satra.co.uk

Engineering Influences in SPORTS

The ethics of sports

The sacred field of sports has been scarred by scores of unethical practices. Ben Johnson, exactly 25 years back become infamous with just one word “Busted”. When he tested positive for banned drugs, Johnson not only lost his gold medal and world records, he also lost numerous fans. Lance Armstrong by admitting to systematic doping has shattered the faith of billions of fans. This is worsened by the fact that Armstrong and Johnson are just the tip of the iceberg.

The urgent need for improved performances has corresponded to the rise of dishonourable practices. In no other field is the value of milliseconds more visible, races are won and lost by mere immeasurable seconds. This feeble distinction between the first and second place brings about the drive to excel. While this drive can bring about a passion for excellence, a journey of self discipline and inspiration to succeed it can also become a destructive force by sportspersons turning to unethical means to win.

This aggressive competition can remain healthy however if ethical means of improving performance is practiced. Sportspersons must take to heart the advice of Gandhi – “Means are after all everything.” While sportsman must train harder, engineers too have a role to play.

Engineering the ethics of sports:

Innovating to improve performance, using intelligence instead of deception, is the way engineers must look at sports. Engineers, have in their hands, the very tools to dictate the ethics of sports. Sports equipment, are the most fundamental area where the influence of engineers can be seen. A vast range of sports balls, golf clubs & balls, running shoes, baseball bats & helmets, surf boards, skis and snowboards, ice axes, bicycles, mouth-guards, training equipment, and tennis racquets are designed using CFD and CAE with products from ANSYS, LS Dyna, SIMULIA, MSC & Mentor Graphics’ FloEFD tool. Below are sports where the design skills have come into play in obvious manners.

Motor Sport was one of the first professional sports to adopt commercial CFD tools for competitive advantage. Adrian Newey, is an example of what engineers can do in the field of sports. He has worked in both Formula One and IndyCar racing as a race engineer, aerodynamicist, designer and technical director, considered one of the best engineers in Formula One. He designed championship-winning Formula One cars for Williams F1 and McLaren.

Motor sports have seen design skills being employed over the past few decades, the first inviscid panel method was used in the 1980s – An inviscid flow is the flow of an ideal fluid that is assumed to have no viscosity. It can be argued that Formula 1 has been a major driver for technology innovation in CFD with high performance computing and preprocessing enhancements to CFD technologies being developed for ANSYS FLUENT, CD-Adapco’s CCM+ and latterly the OpenFOAM product.

Swimming too has seen various innovations, Speedo International has a long track record of technological innovations in elite swimsuit design over several Olympiads and its 2008 offering, the LZR Racer Swimsuit, was developed with the help of ANSYS FLUENT CFD software for the Beijing Games. With the use of CFD, Speedo were able to make their suit 5% better in passive drag and swimmers were going on average 2% faster overall after its launch. Late in 2011, Speedo debuted its latest swimwear innovation, Fastskin3 — a cap, goggle and swimsuit engineered to work together as one revolutionary racing system. Research indicates that this innovative system of products, when worn together, reduces full-body passive drag by up to 16.6 percent, improves oxygen economy by up to 11 percent, and reduces active body drag by up to 5.2 percent. Technology thus has given an edge to talented swimmers such as Michael Phelps.

Football has also witnessed the contributions of engineering techniques. FEA software from Simulia was used to design the Teamgeist ball for the 2006 FIFA World Cup. It was engineered to behave consistently wherever it was struck with the interior of the ball being a carcass structure made from 12 pentagonal panels of fabric that fold up to form a sphere. This design led to large improvements in stiffness distribution. The FEA software modeled the behaviour of the ball when kicked at up to 160 kilometres an hour (100mph), helping to determine the effect of even small structural changes on the ball’s overall performance. Separate CFD simulation using the ANSYS FLUENT determined and improved the aerodynamic features of the novel panel structure used on the ball’s surface.

Cycling is a sport that has seen rapid technological advances. Cycles are continuously being developed to ensure speed, in a sport where every faction of a second counts. Examples of such specially designed cycles are presented by the company Avanti Bikes. To help design the bikes, Dynamics Sports Engineering (DSE) engineers first used ANSYS CFD- Flo computational fluid dynamics (CFD) software to optimize the aerodynamics of individual components, such as the head tube, fork, bottom bracket and seat stay attachment. Next, engineers performed a systems simulation as they combined components into a full structure and tested the aerodynamic performance of the assembly at crosswind angles from −20 degrees to +20 degrees. Engineers manually iterated through a series of designs to an optimized solution that provided about a 20 percent reduction in drag. This drag reduction could decrease a rider’s time by approximately one minute over one hour of race time.

Virtual Athlete

The examples cited above are just a mere reflection of the revolution occurring in the field of sports. While some might suggest that such innovations are “technological doping” – the fact remains that such research and development is carried out in a transparent manner with the prime investment being intelligence.

Reference: www.nafems.org |www.ansys.com