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Cellulose stronger than steel. Wood pulp stronger than CF.
"Wood pulp extract stronger than carbon fiber or Kevlar"
http://www.gizmag.com/cellulose-nanocrystals-stronger-carbon-fiber-kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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#2
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Cellulose stronger than steel. Wood pulp stronger than CF.
On Monday, January 4, 2016 at 2:05:01 AM UTC, Jeff Liebermann wrote:
"Wood pulp extract stronger than carbon fiber or Kevlar" http://www.gizmag.com/cellulose-nanocrystals-stronger-carbon-fiber-kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Papier mache bicycles. Lovely. I shall be the world's leading expert. Andre Jute An expert is a guy who tells everyone else what to ride while he sticks to his comfortable old steel bike. |
#3
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Cellulose stronger than steel. Wood pulp stronger than CF.
On Sun, 03 Jan 2016 18:05:01 -0800, Jeff Liebermann wrote:
"Wood pulp extract stronger than carbon fiber or Kevlar" http://www.gizmag.com/cellulose-nano...-carbon-fiber- kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. Without reading the article : Stronger then steel on a strength to weight basis isn't very spectacular and no reason at all to use on a bicycle. Simple Alu is at least twice as strong as steel on a strength to weight basis. Edmund |
#4
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Cellulose stronger than steel. Wood pulp stronger than CF.
On Sun, 03 Jan 2016 18:05:01 -0800, Jeff Liebermann
wrote: "Wood pulp extract stronger than carbon fiber or Kevlar" http://www.gizmag.com/cellulose-nanocrystals-stronger-carbon-fiber-kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. After reading about how to make micro fibers and then bind them into larger strands I suspect that the NEW$ bikes will likely cost more then carbon fiber :-) -- cheers, John B. |
#5
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Cellulose stronger than steel. Wood pulp stronger than CF.
On 1/3/2016 6:05 PM, Jeff Liebermann wrote:
"Wood pulp extract stronger than carbon fiber or Kevlar" http://www.gizmag.com/cellulose-nanocrystals-stronger-carbon-fiber-kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. Can John drill holes in it? |
#6
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Cellulose stronger than steel. Wood pulp stronger than CF.
On 04/01/16 16:17, sms wrote:
On 1/3/2016 6:05 PM, Jeff Liebermann wrote: "Wood pulp extract stronger than carbon fiber or Kevlar" http://www.gizmag.com/cellulose-nanocrystals-stronger-carbon-fiber-kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. Can John drill holes in it? You mean like Holeywood? |
#7
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Cellulose stronger than steel. Wood pulp stronger than CF.
On Mon, 4 Jan 2016 10:37:48 -0000 (UTC), Edmund
wrote: On Sun, 03 Jan 2016 18:05:01 -0800, Jeff Liebermann wrote: "Wood pulp extract stronger than carbon fiber or Kevlar" http://www.gizmag.com/cellulose-nano...-carbon-fiber- kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. Without reading the article : Just read between the lines. Stronger then steel on a strength to weight basis isn't very spectacular and no reason at all to use on a bicycle. Strength to weight ratio is also known as specific strength: https://en.wikipedia.org/wiki/Specific_strength Click on the "specific strength" column heading to sort by specific strength. Scraping the data for cycling relevant materials: Material Specific Strength kN-m/kg Carbon Fiber 2457 Glass Fiber 1307 Balsa Wood 521 Bainite 321 Titanium 228 Aluminum 204 (7075-T6) Stainless Steel 63.1 (304) Simple Alu is at least twice as strong as steel on a strength to weight basis. Nope. Bainite and 7075-T6 are about the strongest steel and aluminum alloys available. Looks like steel is about 50% stronger on the basis of tensile strength to weight ratio. To revitalize cycling, what is needed is a new frame material. While once considered an exotic frame material, aluminum is now a commonplace commodity. Carbon fiber, titanium, and magnesium are too expensive. Bamboo and wood frames are more of an art form than anything practical. Because of the manual labor content, they're also expensive. Plastic has been limited to concept bikes for many years. So, what's left? I suggest a blown glass bicycle frame. Tempered glass can be made very strong using thermal stress hardening. As long as you don't crash, a glass frame should hold together. Glass parts can be easily welded together with a gas torch. Same with frame alignment. Obviously, some research into problems like being invisible in traffic will need to be performed. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#8
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Cellulose stronger than steel. Wood pulp stronger than CF.
On 1/4/2016 11:17 AM, Jeff Liebermann wrote:
On Mon, 4 Jan 2016 10:37:48 -0000 (UTC), Edmund wrote: On Sun, 03 Jan 2016 18:05:01 -0800, Jeff Liebermann wrote: "Wood pulp extract stronger than carbon fiber or Kevlar" http://www.gizmag.com/cellulose-nano...-carbon-fiber- kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. Without reading the article : Just read between the lines. Stronger then steel on a strength to weight basis isn't very spectacular and no reason at all to use on a bicycle. Strength to weight ratio is also known as specific strength: https://en.wikipedia.org/wiki/Specific_strength Click on the "specific strength" column heading to sort by specific strength. Scraping the data for cycling relevant materials: Material Specific Strength kN-m/kg Carbon Fiber 2457 Glass Fiber 1307 Balsa Wood 521 Bainite 321 Titanium 228 Aluminum 204 (7075-T6) Stainless Steel 63.1 (304) Simple Alu is at least twice as strong as steel on a strength to weight basis. Nope. Bainite and 7075-T6 are about the strongest steel and aluminum alloys available. Looks like steel is about 50% stronger on the basis of tensile strength to weight ratio. To revitalize cycling, what is needed is a new frame material. While once considered an exotic frame material, aluminum is now a commonplace commodity. Carbon fiber, titanium, and magnesium are too expensive. Bamboo and wood frames are more of an art form than anything practical. Because of the manual labor content, they're also expensive. Plastic has been limited to concept bikes for many years. So, what's left? I suggest a blown glass bicycle frame. Tempered glass can be made very strong using thermal stress hardening. As long as you don't crash, a glass frame should hold together. Glass parts can be easily welded together with a gas torch. Same with frame alignment. Obviously, some research into problems like being invisible in traffic will need to be performed. Reading between the lines, as you suggest, leads us to consider that there are different kinds of 'strength'. Classically, oaks snap in storms which only bend willows. Light and durable can be hard to sell without enough torsional stiffness for example and also ultra-thin aluminum with wall to diameter beyond about 1:55 is prone to 'beer-can' failures, etc. There's no simple 'best'. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#9
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Cellulose stronger than steel. Wood pulp stronger than CF.
On Sun, 3 Jan 2016 18:10:37 -0800 (PST), Andre Jute
wrote: On Monday, January 4, 2016 at 2:05:01 AM UTC, Jeff Liebermann wrote: "Wood pulp extract stronger than carbon fiber or Kevlar" http://www.gizmag.com/cellulose-nanocrystals-stronger-carbon-fiber-kevlar/23959/ Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers... "Biodegradable fibers as strong as steel made from wood cellulose" http://www.gizmag.com/steel-strong-fibers-wood-cellulose/32432/ ...claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. Soon everyone will be riding on wood pulp or cellulose fiber bicycles. Papier mache bicycles. Lovely. I shall be the world's leading expert. So, which cardboard bicycle are you going to buy, build, or clone? https://www.google.com/search?tbm=isch&q=cardboard+bicycle In sufficient quantity, these paper bicycles can be made very cheaply. They also solve the bicycle parking and theft problem. When you arrive, instead of locking your bicycle to an immovable object, you simply remove the wheels and metal parts, set fire to the cardboard frame, and go about your business. For the return trip, you purchase an "insert tab A into slot B" type cardboard frame from a street vendor and reassemble the wheels and metal parts. Hmmm... I forgot to mention my inflatable bicycle. An expert is a guy who tells everyone else what to ride while he sticks to his comfortable old steel bike. Do like I say, not like I do. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#10
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Cellulose stronger than steel. Wood pulp stronger than CF.
On Mon, 04 Jan 2016 11:27:01 -0600, AMuzi wrote:
Reading between the lines, as you suggest, leads us to consider that there are different kinds of 'strength'. On the strength of that argument, I would agree. There's also hardness, toughness, elasticity, plasticity, brittleness, ductility, malleability, and whatever else I forgot. Classically, oaks snap in storms which only bend willows. Yep. Oak isn't as ductile as willow. Light and durable can be hard to sell without enough torsional stiffness for example and also ultra-thin aluminum with wall to diameter beyond about 1:55 is prone to 'beer-can' failures, etc. There's no simple 'best'. If you're building frames intended to only last one race, then such failures can be tolerated. Building to the brink of failure is a common practice among those who ignore safety concerns. Personally, I think the major progress will be in layered frame tubing material. Layers of different materials, each optimized for the best characteristics of the material, and combined to demonstrate that characteristic under specific conditions. For example, your "beer-can" problem can be reduced by pressurizing the inside of the tube, or hardening the outside to prevent the initial stress riser from forming. The price of such tubing will initially be outrageous, but should drop. Gotta run... -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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