What products could I make from fiberglass to sell.?
Hi,
I want to make composite (fiberglass, kevlar, carbon fiber) products as a hobby, I’d like to make things at home and sell them and make a small profit but I cant decide what to make. Any ideas on what to make?
Thanks
David
Car Body kits easy….profitable…very profitable
What properties of polymer materials distinguish it from metals, ceramics and glass, and composites? To be exact, what causes objects to be considered as a polymer? Also, what is the difference between a composite and an alloy?
A polymer is a long chain of hydrocarbons (generally). Metals, Ceramics, and glass (which is a type of ceramic) are crystalline (for the most part) groups that can be broken down into a basic unit of just a couple atoms. A composite is a mixture of different things, an alloy is basically a metal solution (like salt dissolved in water, but with metal dissolved in metal).
Casting of molten metal is important in many industrial processes. Centrifugal casting is used for manufacturing pipes, bearings, and many other structures. A variety of sophisticated techniques have been invented, but the basic idea is as illustrated in Figure P6.12. A cylindrical enclosure is rotated rapidly and steadily about a horizontal axis. Molten metal is poured into the rotating cylinder and then cooled, forming the finished product. Turning the cylinder at a high rotation rate forces the solidifying metal strongly to the outside. Any bubbles are displaced toward the axis, so unwanted voids will not be present in the casting. Sometimes it is desirable to form a composite casting, such as for a bearing. Here a strong steel outer surface is poured, followed by an inner lining of special low-friction metal. In some applications, a very strong metal is given a coating of corrosion-resistant metal. Centrifugal casting results in bonding between the layers.
Suppose that a copper sleeve of inner radius 2.01 cm and outer radius 2.18 cm is to be cast. To eliminate bubbles and give high structural integrity, the centripetal acceleration of each bit of metal should be 100g. What rate of rotation is required? State the answer in revolutions per minute
The formula for Angular acceleration is
α = V ²/ r
—-> r = average radius of the molten metal (0.0201 + 0.0218)/2 = 0.02095m
V ² = α r
V ² = α (0.02095)
——> α = a/r = 100g/ (0.02095) = 100(9.8)/ (0.02095)
V ² = [100(9.8)/ (0.02095)]/(0.02095)
V ² = 100(9.8)
V = 31.305m/sec
ω = V/ r
ω = 31.305 / (0.020950
ω = 1494.27rad/sec
1494.27rad/sec(1rev/2πrad)(60 secs/1min) = 14269.225 rev/min
Is there such as put option, inverse ETF for SSE index, CSI 300 index,Shanghai Shenzhen 300 Index .SHSZ300 (Shanghai) index in the world? Are there any investment vehicles for shorting stocks on the chinese exchange.Thanks in advance.
morgan stanley does have a new closed end fund which exclusively invests in class ‘A’ shares.
there’s also an MSCI index for it as well; you should be able to buy puts on it. use the morgan stanley link below for more info.
Is there much difference? Which is better? Are they equally safe? Is it just personal preference? Can you reccomend a good comfortable steel composite toe boot?
steel toe boots are just that a piece of steel fitted over the toes, composite toe boots use other materials that are just as hard BUT they do not have the connectivity levels as steel. if you are working in a cold climate steel toes will freeze them toes right off, also electrical environments.
my advice get a good pair of composite ones, and you get what you pay for, its worth the investment. more than you could ever imagine. proper foot support. helps legs cramps, back pain etc…
composite materials are 2 or more complimentary materials put together. Can be hard to recycle like plastics and lamenents. How they can be used with electronics depends on your reason for use. Do you want them to work together or are you trying to fuse the two. Plastic is a bad conductor of electricity. If your plan is to use it for that matter you would have to add a third(conductive) element to the material. What role will the composite material play? What role will the electronics play? Do either one need to use the properties of the other? These are questions you have to ask yourself (and make clear here) in order to better come up with a solution.
I’m going to put a deck on my house. I’ve heard composite is better than wood. I’d like to hear some opinions on both. Longevity, durability and maintainence, toname a few things.
Yes is the answer.
When you consider the fact composites are virtually maint free and lasts a lifetime it becomes clear.No staining,power washing,rotting,sealing.
You may also want to visit Home Depot,Lowe’s,84 Lumber as they should have a cad program to help with design/costs factors.You can also accent your project with different color inserts.
Good Luck
Specifically preferred locations are Antelope Valley & San Fernando Valley.
the only one I know of is in Reno. Abaris composite Training
http://www.abaris.com/index.asp
It looks like there is one in Sonoma Ca too.
Niether one is in southern california
And what are these composites mostly made of in addition to carbon fiber?
The Boeing web site is saying 60 % for the total aircraft . I’m not sure what the breakdown is for the wing. Visit Boeing’s 787 web presentation for more information and some good videos about the Dreamliner features.
http://www.newairplane.com/
Also wikipedia has a pretty good page about the Dreamliner
http://en.wikipedia.org/wiki/Boeing_787
WATCH FOR THE 787 ROLL OUT ON 7-8-07
1. A number that has more than 2 factors is called
A) a prime number
B) a constant
C) a composite number
D) a coefficient
2. Write the prime factorization for each of the following numbers.
A. 160
B. 306
_______
3. Solve the following equations using the Addition or Subtraction Properties of Equality. Show your work to receive partial credit.
A. 193 + x = 256
B. x – 52 = 143
C. 623 = x – 71
D. y + 76 = 155
______
4. Solve the following equations using the Multiplication or Division Properties of Equality. Show your work to receive partial credit.
A) 3m = 129
B) 22 = n/5 (N over 5)
C) W/11 (w over 11) = 16
D) 162 =27
______________
5. Find the greatest common factor (GCF) for each of the following sets of numbers:
A. 24 and 96
B. 3, 6, 9 and 18
C. 15, 20 and 40
______
6. A number that is written using powers of 10 is written in
A) standard form
B) combined terms
C) like terms
D) scientific notation
7. Letters that are used to represent values are called
A) constants
B) variables
C) coefficients
D) exponents
8. Use the Order of Operations to simplify the following expressions. Write your answers in the answer blanks below.
A) (10 – 3[2] + 3) + 6[2] – 23
B) 9[2] + 20 over 2[2] – 52
C) 18 + 15 over 3 + 7[2] – 2 x 3
___
9. A number that is written in regular form is written in
A) standard form
B) combined terms
C) like terms
D) scientific notation
10. The number that is in front of the variable is called
A) the constant
B) the multiple
C) the coefficient
D) the power
11. The 3rd step in the Order of Operations is
A) Addition and Subtraction
B) Exponents
C) Multiplication and Division
C) Parentheses
12. Find the least common multiple (LCM) for the following sets of values:
A. 15, 30 and 66
B. 35 and 77
__
13. Simplify the following exponent values and write your answers in the blank below.
A. 63
B. 29
C. 105
___
14. In an expression, the number that does not have a variable is called
A) a prime number
B) a constant
C) a composite number
D) a coefficient
15. The Multiplication Property of Equality allows us to multiply each side of the equation by a number.
A) True
B) False
16. When writing the prime factorization of a number, a tool or method that can be used is
A) a factor tree
B) combining terms
C) substitution
D) grouping terms
If you don’t want to do it, don’t but don’t give me a hard time. I want to help my sister but I don’t know if I’ll be wrong.
1. C a composite number
2. A.160 = 2^4*5^2
B.306 = 2*3^2*17
3. A. 63
B. 195
C. 694
D. 79
4. A. 43
B. 110
C. 176
D. no question
5. A. 24
B. 3
C. 5
6. D. scientic notation
7. B. variables
8. A. (10 – 3(2) + 3) + 6(3) – 23)
(10 – 6 + 3) + 18 – 23
7 + 18 – 23
25 – 23 = 2
B. [5(2) + 20]/[2(2) - 52] = [10 + 20]/[4 - 52]
30 / -48 = -5/8
C. [18 + 15]/[3 + 7(2) - 2(3)] =
33/[3 + 14 - 6] = 33/[17 - 6] =
33/11 = 3
9. A. standard form
10. C. coefficient
11 C. mult and div
12. A. LCM = 660
B. LCM = 385
13. A. 63 = 3^2 *7
B. 29 is prime
C. 105 = 3*5*7
14. B. a constant
15. B. false, it should read…"by the same number."
16. A. factor tree