Saturday, March 21, 2020

Roosevelt was bold Essay Example

Roosevelt was bold Essay Example Roosevelt was bold Essay Roosevelt was bold Essay We will review this statement and in conclusion we will agree or disagree with it. Using the sources to support and justify our argument. Roosevelt succeeded Hoover as President, on his assassination in 1901. Roosevelt became very popular and became famous for tackling business monopolies, and initiating the conservation of natural resources to cut down on unemployment. He also won the Nobel Peace Prize. He was born to a wealthy, upper class merchant and was well educated and attended Harvard where he developed political interests. There is no doubt and we can immediately agree with the first three points of the title because Roosevelt was certainly a bold man however the last, but he was not bold enough, is thoroughly disputable and can be argued with the use of the sources. When we look at source A we can not extract much useful information in relevance to the title. The letter is an extremely small example of the 5000 to 8000 letters that Roosevelt received every day. The letter is from a citizen euphorically thanking the president for stopping the reposition of their house. This shows that Roosevelt had support and was interested in the community. Also it shows that the Roosevelt US is a good place but it does not show anything about how bold FDR was. The source is a reliable primary source and so is reliable but does not show us anywhere near the whole picture. The source is also not useful because it bears no resemblance to the title but does show some aspects of Roosevelt and his popularity. Source B is photographic and so is totally reliable although is subtly limited by its medium. The picture is also probably a propaganda piece showing the caring president taken the effort to spend time with the poor, working class. It was taken at a time when unemployment was at an all time high and it shows the people the good effect of the new deal employment schemes. It shows that he was bold appearing in public with the working class and mixing classes as he was from an upper class family. Everyone is smiling in the photo, which projects a good image of the president. The photo shows that FDR was bold but shows no limits to this boldness. The graph in source B is the first good example of Roosevelts boldness. The unemployment levels peak in 1933 at the time of the Wall Street crash and also around the time that FDR came to power. Roosevelt is bold enough to spend very much state money on employment schemes in his new deal and this works because the levels of unemployment fall, not dramatically but slowly. He keeps up this government spending until 1937 and at this point he cuts the funds and the unemployment figures rise sharply. This completely agrees with the title. It shows that he was bold to spend the money on these schemes and he told everyone what he was doing, but as soon as the situation had improved he was not bold enough to keep up the funding on the employment schemes. This source is reliable because it is totally compiled of facts. It is also useful because it shows each aspect of the title and agrees with it. The next source, D is an example of the opposition to Roosevelt in the form of unemployment and benefit figures. The company would have published this document to raise an opposition against FDR. The problem that this American company clearly has with the presidency is the fact that acts were passed to disenable companies to employ any form of cheap labour in the form of child labour or pensioners. They are also getting at the fact and are making out that Roosevelt is a lazy public school boy who would prefer to be fishing than running the country. This shows that Roosevelt was bold to bring in these acts to prevent cheap labour but does not show that he was not bold enough. This source is not reliable because it uses fictional figures. It does however have the use of showing us the mood of employers in and around 1936 but this bears little relevance to the question. Next we can see that source E is clearly reliable and factual clearly from the fact that it is taken from a textbook. Although an American text book there is no market for a non-factual, bias textbook. In this source it speaks of care and confidence, which are both, characterised in boldness. It supports the second phrase in the title by speaking of his fireside chats press conferences and endless mail. We can see communication and boldness in this source there appears to be no lack of boldness. This source is extremely useful and because it is so reliable it can almost singularly back up my argument. It is certain and made even clearer with the use of these few sources that Roosevelt was definitely a bold man. We can also now say though in conclusion that there is no evidence in these sources that there was any limitation to Roosevelts boldness and courage. We can safely say therefore that; Roosevelt was bold. He told people what he was going to do. And he did it.

Wednesday, March 4, 2020

The Strength and Thickness of Carbon Fiber Cloth

The Strength and Thickness of Carbon Fiber Cloth Carbon fiber is the backbone of lightweight composites. Understanding what carbon fiber cloth is required knowing the manufacturing process and composite industry terminology. Below you will find information on carbon fiber cloth and what the different product codes and styles mean. Carbon Fiber Strength It needs to be understood that all carbon fiber is not equal. When the carbon is manufactured into fibers, special additives and elements are introduced to increase strength properties. The primary strength property that carbon fiber is judged upon, is modulus. Carbon is manufactured into tiny fibers through either the PAN or Pitch process. The carbon is manufactured in bundles of thousands of tiny filaments and wound onto a roll or bobbin. There are three major categories of raw carbon fiber: High Modulus Carbon Fiber (Aerospace Grade)Intermediate Modulus Carbon FiberStandard Modulus Carbon Fiber (Commercial Grade) Although we might come in contact with aerospace grade carbon fiber on an aircraft, such as the new 787 Dreamliner, or see it in a Formula 1 car on TV; the majority of us will likely come in contact with commercial grade carbon fiber more frequently. Common uses of commercial grade carbon fiber include: Sporting goodsCar hoods and aftermarket partsAccessories, like iPhone cases Each manufacturer of raw carbon fibers has their own nomenclature of the grade. For example, Toray Carbon Fiber calls their commercial grade T300, while Hexcels commercial grade is called AS4. Carbon Fiber Thickness As previously mentioned, raw carbon fiber is manufactured in tiny filaments (around 7 microns), these filaments are bundled into rovings which are wound onto spools. The spools of fiber are later used directly in processes like pultrusion or filament winding, or they can be woven into fabrics. These carbon fiber rovings are comprised of thousands of filaments and are almost always a standard amount. These are: 1,000 c (1k carbon fiber)3,000 filaments (3k carbon fiber)6,000 filaments (6k carbon fiber)12,000 filaments (12k carbon fiber) This is why if you hear an industry professional talking about carbon fiber, they might say, I am using a 3k T300 plain weave fabric. Well, now you will know that they are using a carbon fiber fabric that is woven with Toray standard modulus CF fiber, and it is using fiber that has 3,000 filaments per strand. It should go without saying then, that the thickness of a 12k carbon fiber roving will be twice that of a 6k, four times as a 3k, etc. Due to efficiencies in manufacturing, a thicker roving with more filaments, such as a 12k strand, is usually less expensive per pound than a 3k of equal modulus. Carbon Fiber Cloth Spools of carbon fiber are taken to a weaving loom, where the fibers are then woven into fabrics. The two most common types of weaves are plain weave and twill. Plain weave is a balanced checker board pattern, where each strand goes over then under each strand in the opposite direction. Whereas a twill weave looks like a wicker basket. Here, each strand goes over one opposing strand, then under two. Both twill and plain weaves have an equal amount of carbon fiber going each direction, and their strengths will be very similar. The difference is primarily an aesthetic appearance. Every company that weaves carbon fiber fabrics will have their own terminology. For example, a 3k plain weave by Hexcel is called HexForce 282, and is commonly called 282 (two eighty-two) for short. This fabric has 12 strands of 3k carbon fiber per inch, in each direction.