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Essay on definition of technology
Advantages and disadvantages of using components manufactured from composites
What is technology
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Technology of Composite Bicycle Frames The definition of technology is systematic treatment/application of knowledge to produce something (Webster’s1496). I will take this definition and describe the technology of making a bicycle frame. Composites structures are defined as : “...constructions utilizing admixture or blend or a compound of distinct parts or elements of various available materials to produce a resulting structure of the highest possible strength to weight ratio ...” (Moynihan ). For this paper “composite” will mean a plastic resin reinforced with structural fibers. In this paper I will be comparing composites against other methods of building bike frames. First we will discuss the structural advantages of building a bicycle with composites. Using composites you are not limited to certain shapes as if you were using metal tubing. Most metal bike frames are tubes of standard sizes and standard wall thickness. With composites, you can differ the thickness of the wall of the frame. If you want more strength in one area, you just add more material in that area. By changing the wall thickness in composite layups, you will change the strength of your frame in a localized area. Metal tubing construction is mostly limited to constant thickness walls. Because of the constant thickness the metal bike frame will end up being heavier than it needs to be. Composites do most of the things metals can do in a bike frame. Although, often the way you go about building with composites is different than if using metals. With composite construction a mold has to be built to form the required shape and then the fibers and resin are held in the mold to harden. With metal tubing construction, off the shelf tubes a... ... middle of paper ... ...n of a Graphite/Epoxy Submarine Hull” Human Power Technical Journal of the IHPVA Contents of Vol 10, No. 4 Fall 1993: 19-23 Wanttaja, Ronald J. Chapter 6, “Composite Construction” Kitplane Construction Second Ed. 1996. 215-261 Moynihan, Jim “Composite Construction and Advanced Materials” Human Power Technical Journal of the IHPVA 1981: Part 1 4-16, Part 2 8-12 Rinard, Damon “How I made a Carbon TT Frame http://www.damonrinard.com/carbonttfram e-mail: rinard@earthlink.net Rinard, Damon “How I made a Carbon Fiber/Epoxy Composite Bike Frame in my Garage” http://www.damonrinard.com/carbon.fiber.html e-mail: rinard@earthlink.net Scion Industries “Composites” website 5857 Wright Drive Loveland, CO 80537 www.miningco.com Webster’s New World Dictionary of the American Language, College Edition 1966 pp1496
We use metals to construct all kinds of structures, from bridges to skyscrapers to elevators. The strength as well as durability of materials that are crafted out of metal make the materials ideal not only for construction but also for many other applications.
These bikes are made up of a wide range of materials such as steel, which is inexpensive, strong, and is easy to work with. Aluminum is lightweight, inexpensive and non corrosive. Titanium is light, strong non corrosive and shock absorbing. Carbon fiber which is the lightest, strongest with unlimited frame design possibilities and excellent shock absorption. The distribution for the compa...
The bicycle, a two wheeled object that has gone through many renditions, has evolved into different kinds of new creations along the course of its history. Leonardo Da Vinci, created the blueprints and with the help of his students, tested and created the primitive form of a bicycle. Baron Karl Von Drais to Ignaz Schwinn help contribute to create a more modern version of transportation.
Today in my assignment I will be talking to you about Timber Frame Construction and its Cladding Systems. I will go on to mention its current position, what a Cladding is, I will also give a brief summary of the characteristics of different types of claddings. Also a diagram will be presented will labels of a cladding system fastened onto a timber framed building.
Competition - There are now more than 20 manufacturers in the bicycle industry and Specialized will need to stay at the forefront in order to keep its leadership.
...an be seen that composite teeth form a high stability bond than PMMA teeth. This is due to the filler content allowing for low shrinkage, increased wear resistance and better cross-linkage with the base. In overall consensus the technique of heat-curing is believed to achieve significantly more polymer cross-linkage than that of self-curing the acrylic resin PMMA base - giving us a stronger base to teeth interface. It should be noted however that both techniques can be used for denture fabrication to achieve a desired result and it is up to the dentist and the technician to determine which one they prefer however, composite teeth bonded to a heat-cured PMMA base works best. Though the tooth and base by themselves may be strong, if the interface between them is not strong, this will result in the overall denture produced being weak independent of material selection.
Every player wants an economically viable racket that is light and can meet their playing style whether it be for increased power or better control. That is why engineers are constantly researching new ways and ideas to combine different materials to design the perfect racket. However the question is can there ever be ‘the perfect racket’ as everyone has different playing styles and some might find this ‘perfect racket’ to be too heavy, too long or just uncomfortable to play with. I think the ultimate goal for an engineer is to be able to design the perfect racket that deforms less during game play for that specific player. The introduction of composite frames has pushed engineers in the right
The semi-monocoque architecture stipulates that the body structure be composed of skin which conceals the main skeletal frame of the vehicle body. The distinguishing feature of such a design is that all the loads acting on the fuselage are transferred on to frame of the structure through the skin. On the other hand, early aircrafts were constructed using truss frames, typically of wood or steel tubing, which were then draped in fabric, such as linen or cotton. The skin was structural superfluous as the strength to the structure was provided solely by the airframe. The skin was essentially dead weight, apart from providing a smooth sealed surface.
The three most basic types of bridge structures are girder bridges, arch bridges, and suspension bridges (“Bridge Technology,” 2007). The girder structure consists of a chain of beams that are interconnected and supported vertically through the use of well allocated piers. The arch structure utilizes curved elements to disperse the applied forces downwards into end abutments. Finally, the suspension structure exploits the superior tensile strength of steel cables in order to help carry the massive loads applied to the bridge. While some bridges are built basic in structure, others are made through a combination of the structural forms mentioned above (“Bridges,” 2008).
Concrete also has its advantages. Concrete does not corrode, therefore concrete structures require less maintenance. Besides that, concrete has resistance to fire, therefore it is safer compare to the timber structure. Concrete has also resistance to cyclic loading.
advances in technology that the bike has gone through, and what might be in the
Technology is the way which extends humans ability. It is very difficult to obtain a precise definition of technology. It is generally accepted that "technology" is more than just a collection of physical products of science. "Technology" is the link between society and its tools.
Science and Technology has been around from the beginning of time. It evolved from the everyday efforts of people trying to improve their way of life. Throughout history, humankind has developed and utilized tools, machines, and techniques without understanding how or why they worked or comprehending their physical or chemical composition. Before we go any further a definition has to be given for both Science and Technology because they are both different in their own right even though the two are almost indistinguishable. According to the Oxford Dictionary Technology can be defined as the knowledge or use of the mechanical arts and applied sciences, while Science can be defined as the branch of knowledge involving systematized observation and experiment. Science can be further divided into three separate categories; Pure, Applied and Natural Sciences. In addition technology is often defined as applied science, it is simply the application of scientific knowledge to achieve a specific human purpose, however, historical evidence suggests technology is a product of science.
Technology – as defined by the US National Academy of Science (cited in Jones 1996, p.17) –
According to the Merriam-Webster Dictionary online, technology means: the use of science in industry, engineering, etc., to invent useful things or to solve problems: a machine, piece of equipment, method, etc. that is created by technology.