View allAll Photos Tagged Friction
Here are the two equations for friction. There's a difference between "kinetic friction," which is when the two surfaces are skidding, and "static friction, when the two surfaces are at rest relative to each other. Kinetic friction is usually less than static friction, because when the surfaces are sliding past each other they're less likely to form strong interactions than when they're at rest relative to each other.
Nutty Mad plastic friction go cart.
This toy is the only one of this type of Marx Nutty Mad I have seen in the flesh. I bought it so many years ago I have lost track of who I bought it from. I hunted one down on the internet that was in the same condition so I can not tell what is missing or how it should look. If you have one or better yet a box, I would LOVE to hear from you and see more photo's.
El Tiro y Arrastre es un deporte autóctono de la Comunidad Valenciana, con especial arraigo en Valencia y Castellón
Five years ago a group of engineers at NASA's Marshall Space Flight Center in Huntsville, Ala., and Langley Research Center in Hampton, Va., had the bold idea to manufacture a five-meter diameter fuel tank entirely out of aluminum lithium 2195 alloy, using advanced manufacturing methods that included friction stir welded joints and single-piece spun formed domes.
Why is this idea such a manufacturing advancement in how tank domes are produced today? This technology incorporates lighter weight material, significantly reduces the number of pieces needed to create a tank dome, eliminates numerous complex welding, machining and inspection steps and can be used on any large liquid propellant tank with greater reliability and lower costs.
To manufacture a typical dome using aluminum alloy 2219 requires eight gore panels, or pie shaped pieces, 10 welding steps, and multiple operations and inspections to assemble these pieces into a full-scale tank dome. The new manufacturing method takes two commercial off-the-shelf aluminum lithium 2195 plates that are joined using friction stir welding to produce a sufficiently large starting blank. The welded plate blank is then spun formed to create the single-piece tank dome.
This novel manufacturing approach also allows engineers and technicians to use the lighter-weight, higher-strength alloy aluminum lithium 2195 compared to current tank designs that use the heavier, lower-strength aluminum 2219 alloy. This could reduce the weight of future liquid propellant tank domes by 25 percent, both through the material replacement and the reduction in the number of welds.
NASA's Marshall Space Flight Center and Langley Research Center partnered with Lockheed Martin Space Systems in Denver, Colo., and MT Aerospace in Augsburg, Germany, to push the envelope in dome manufacturing by making use of existing commercial materials and cutting edge technology. This international partnership demonstrates the agency's desire to tap into rich sources of innovation to help address technical challenges that will mutually benefit NASA and next-generation space exploration.
Engineers at Langley and Marshall are currently evaluating samples of the successfully manufactured tank dome to ensure the strength and reliability of these novel tank forming processes. Each step brings them closer to their vision of creating an entire tank out of 2195 aluminum lithium.
One additional full-scale development tank dome is scheduled for manufacture and testing in the coming months as part of the joint, four-year technology demonstration program.
NASA has invested in the Friction Stir Weld Spun Form Dome Project since 2005.
Image credit: MT Aerospace
This is the first version of my x-wing model to actually have enough friction to shake with out the wings shifting. Far more swooshable now
Was walking without my Nikon so I had to shoot with my iPhone 4. Light conditions were very poor. That is why quality is so low…
;o(
In dermatology, an abrasion is a wound caused by superficial damage to the skin, no deeper than the epidermis. It is less severe than a laceration, and bleeding, if present, is minimal. Mild abrasions, also known as grazes or scrapes, do not scar or bleed, but deep abrasions may lead to the formation of scar tissue. A more traumatic abrasion that removes all layers of skin is called an avulsion.
on DeviantArt
Campagnolo friction shift levers with homemade index system. A few nuts and bolts are missing from the fabricated guide, but there are stops for 6 speeds.
A welding technician at NASA's Marshall Space Flight Center observes a weld on the Robotic Weld Tool. This weld was “practice” for Ares I Upper Stage gore-to-gore welding.
Image credit: NASA/MSFC/Emmett Given
Friction stir welding requires no blowtorches and no solder -- it literally "stirs" materials together at a molecular level using friction. Learn why this matters in YOUR life:
www.nasa.gov/topics/nasalife/friction_stir.html
p.s. You can see all of the Ares photos in the Ares Group in Flickr at: www.flickr.com/groups/ares/ We'd love to have you as a member!
This photo shows a friction stir weld being performed on the new Vertical Weld Tool at the Marshall Space flight center. The Vertical Weld Tool is capable of assembling tank barrel sections up to 40-feet in diameter and 25-feet long, and will be used to assemble full-scale Ares I developmental hardware.
Image credit: NASA/MSFC/D. Stoffer
Friction stir welding requires no blowtorches and no solder -- it literally "stirs" materials together at a molecular level using friction. Learn why this matters in YOUR life:
www.nasa.gov/topics/nasalife/friction_stir.html
p.s. You can see all of the Ares photos in the Ares Group in Flickr at: www.flickr.com/groups/ares/ We'd love to have you as a member!
Researchers at Pacific Northwest National Laboratory have developed and successfully tested a novel process-called Friction Stir Dovetailing-that joins thick plates of aluminum to steel. The new process will be used to make lighter-weight military vehicles that are more agile and fuel efficient.
Terms of Use: Our images are freely and publicly available for use with the credit line, "Andrea Starr | Pacific Northwest National Laboratory"; Please use provided caption information for use in appropriate context.
The grave of John Walker, the inventor of the Friction Match, lies in the churchyard of St Mary the virgin, Norton-on-Tees, Teesside, County Durham.
Walker's day book for the period 1825 to 1826 shows that he was regularly selling mixtures of combustible materials in the form of separated powders from his Chemist and Druggist shop in the High Street, Stockton-on-Tees.
In 1826 while at home experimenting with a mixture of these combustible materials he happened to scrape the mixing stick against his hearth which caused the stick to catch fire.
Walker's scientific mind was quick to realise that the substance used in this way could have a number of potential applications and he appears to have handed out bundles of matchsticks dipped in the substance to various people in Stockton.
Walker seems to have perfected the mixture consisting of specific portions of Potassium Chlorate and Antimony Sulphide as he put the substance on sale in April 1827 in the form of friction matches. They came supplied with a piece of folded sandpaper for scraping against. The price was a shilling plus 2d extra for the tin. The sandpaper was supplied free.
A Stockton solicitor by the name of Mr Hixon was the first buyer, purchasing a tin box containing one hundred. The day book records the sale of what Walker described as Sulphurata Hyper-Oxygenata Frict though at a later stage he renamed his invention `Friction Lights'. Walker's first matches were made of paste board which was later replaced with three inch wood splints cut by elderly people in the neighbourhood who were generously paid by the chemist.
In 1830 Walker was visited by Michael Faraday who is thought to have encouraged Walker to patent his invention. Sadly Walker seemed to have no interest in developing a wider market for his development and in 1830 his idea was taken on board by a Londoner called Samuel Johnson who patented the friction lights as Friction Matches. Johnson termed the matches Lucifers, which is perhaps appropriate because he was a bit of a devil for taking all the credit for the invention of a Stockton man.
His grave lies about 60 feet from my Dad's, who was also called Walker, but they were not related (bugger!)
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Talk about science "friction" -- Ares rockets and a cool new way to weld.
Caption: Using a metal joining technique called friction stir welding, the Ares Projects team at the Marshall Center has completed welding the first liquid hydrogen tank dome being developed to define manufacturing processes for the upper stage of the Ares I -- the rocket that will launch explorers to the moon, Mars and beyond in coming decades. The innovative welding process produces high-strength welds that are uniformly joined together -- a vital requirement for next-generation launch vehicles and hardware designed for long-term space travel.
The completed dome is the first development hardware assembled for the Ares I upper stage.
Image credit: NASA/MSFC
More about Ares rockets:
p.s. You can see all of the Ares photos in the Ares Group in Flickr at: www.flickr.com/groups/ares/ We'd love to have you as a member!
Participated in a ski race today. Ran 40km (24 miles) in new ski boots and had no time (I thought) to prevent my socks to slide down. This was the painful outcome.
Friction Stir Welding was invented by Wayne Thomas at TWI Ltd in 1991 and overcomes many of the problems associated with traditional joining techniques. Friction Stir Welding is a solid state process which produces welds of high quality in difficult to weld materials such as aluminium and is fast becoming the process of choice for manufacturing light weight transport structures such as boats, trains and aeroplanes.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".
Collection of asbestos-containing friction products on display, touting the benefits of using chrysotile asbestos for such applications. Items shown include brakes, clutch, and gear components.
Apply a bare wire rope slush made from 7 parts tar (pine or Stocholm), 2 parts raw linseed oil, and 1 part Marvel Mystery Oil or similar. Wrap your parceling, with the lay, tryiing to overlap the previous turn by 1/2 the width.
2013 #55 - Black Falcon Team TMD Friction - Porsche 911 GT3 Cup - SP 7
Drivers:
David Jahn
Steve Jans
Hannes Plesse
Maik Rosenberg
Please visit www.reneehrhardt.com/24h-nuerburgring/ for more images and browse through the image catalog to find your car or team. Please contact me if you wish to use any photograph.
2013 Nürburgring 24 hours
Please visit www.reneehrhardt.com/24h-nuerburgring/ for more images and browse through the image catalog to find your car or team. Please contact me if you wish to use any of the photographs.
Friction Stir Welding was invented by Wayne Thomas at TWI Ltd in 1991 and overcomes many of the problems associated with traditional joining techniques. Friction Stir Welding is a solid state process which produces welds of high quality in difficult to weld materials such as aluminium and is fast becoming the process of choice for manufacturing light weight transport structures such as boats, trains and aeroplanes.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".
Friction Bouldering Competition at Earth Treks in Timonium, MD.
Camera :: Nikon D200
Lens :: Nikkor AF-S 17-55mm f/2.8 DX
German wwii b.z. 39 friction fuze box
INERT #BZ39b
B.z. 39 friction simulated fuze box
(NO FUZES INCLUDED)
approximate SIZE: 110mm x 80mm x 35mm
Dated 1943
Wax sealed like the original
wood block core
Reproduction
Made in the USA
INERT DISPLAY ITEM/TRAINING AID
.
TO ORDER: www.aoarmysurplus.com/Merchant2/merchant.mvc?Screen=PROD&...
Always new items arriving at Adams Ordnance Military Surplus Store in Louisville KY from estate sales, international suppliers, collectors and consignments. We have US Army and WWII Nazi helmets, uniforms, pins, guns and gear. Many items are one of a kind. Visit www.aosurplus.com or call 502-599-8240 to check availability and store hours.
All explosives type products are marked "INERT" Hollywood prop.
TWI is at the forefront of solid phase friction welding and processing technology. Active and innovative in welding research and development since the 1960s, we are responsive to industry needs and provide consultancy services to all industry sectors.
Support for industry includes: advice on component design, process selection & quality issues, troubleshooting, feasibility & pre-production trials, application & prototype equipment development.
TWI has been responsible for many key innovations and developments in solid phase joining; Friction stir welding was invented at TWI and was rapidly applied by industry; Linear friction welding was developed into a mature joining process for turbine blades.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".
Japanese made tinplate and plastic toy truck (top) with the Jimson Hong Kong all plastic copy (bottom).
The tinplate base makes the Japanese item far more durable.
Friction Bouldering Competition at Sportrock II in Alexandria, VA.
Camera :: Nikon D200
Lens :: Nikkor AF-S 17-55mm f/2.8 DX
Friction Stir Welding was invented by Wayne Thomas at TWI Ltd in 1991 and overcomes many of the problems associated with traditional joining techniques. Friction Stir Welding is a solid state process which produces welds of high quality in difficult to weld materials such as aluminium and is fast becoming the process of choice for manufacturing light weight transport structures such as boats, trains and aeroplanes.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".
Friction stir welding is used in manufacturing aluminum panels that will fabricate the Ares I upper stage barrel. The Ares rockets are part of NASA's Constellation Program -- a transportation system that will safely and reliably carry human explorers back to the moon, and then onward to Mars and other destinations in the solar system.
Image credit: NASA/MSFC
Read more about this image:
mix.msfc.nasa.gov/abstracts.php?p=4188
Learn why friction stir welding matters in YOUR life:
www.nasa.gov/topics/nasalife/friction_stir.html
p.s. You can see all of the Ares photos in the Ares Group in Flickr at: www.flickr.com/groups/ares/ We'd love to have you as a member!