A polymer‚ metal‚ or ceramic could be potentially used for a knee implant. Each has its own benefits and disadvantages‚ because of this each material is utilized for a different part of the knee replacement. The three parts of the knee replacement are depicted in Figure 1 and are the femoral component‚ the plastic surface‚ and the tibial plate. The material that is the best fit to use for a biodegradable friendly knee replacement wouldn’t be a metal‚ though currently most common used‚ because when
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CLICK TO DOWNLOAD MAT540 Week 8 Homework Chapter 4 14. Grafton Metalworks Company produces metal alloys from six different ores it mines. The company has an order from a customer to produce an alloy that contains four metals according to the following specifications: at least 21% of metal A‚ no more than 12% of metal B‚ no more than 7% of metal C and between 30% and 65% of metal D. The proportion of the four metals in each of the six ores and the level of impurities in each ore are provided
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Heterojunction Bipolar Transistor Saturday‚ December 15‚ 2007 History of SiGe Technology (1/2) The concept of combining silicon (Si) and germanium (Ge) into an alloy for use in transistor engineering is an old one‚ and was probably envisioned by Shockley in 1950. However‚ because of difficulties in growing lattice-matched SiGe alloy on Si‚ this concept is reduced to practical reality only in the last 20 years. In 1957‚ Kroemer patented the first heterojunction Si bipolar transistor(Si HBT)
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it can be said that one learns to colligate an action to its consequence. The bond between the action and the consequence is referred to as contingency‚ which further declares one’s behavior in the future (Alloy‚ Riskind & Manos‚ 2005). In Skinner’s theory of operant
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Superconductive wire can be made from an alloy of niobium and titanium which can then be used to make superconductive magnets. Other alloys of niobium‚ such as those with tin and aluminum‚ are superconductive as well. Pure niobium is itself a superconductor when it is cooled below 9.25 K (-442.75°F). Superconductive niobium cavities are at
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sharpened using a standard grinding wheel. HSS bits retain their full strength at high temperatures and will flex to withstand the unique forces of drilling. When drilling higher temperature alloys such as Titanium‚ Inconel‚ and Stainless Steel‚ a Cobalt composition bit is recommended. Cobalt steel alloys are made of a solid composition of high speed steel which contains more cobalt. Cobalt drill bits are designed for speed and longevity when using proper drilling techniques. They hold their hardness
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With the number of ball mill manufacturer’s increasing‚ the requirement of ball mill by customers becomes more and more strict. The material of ball mill lining board is changed into medium alloy steel from former high manganese steel. To fit the ever-changing market‚ our cement ball mill adopt medium alloy steel of high quality as material to make ball mill lining board. Henan Hongxing Machinery Co.Ltd parts workshop manufactures ball mill lining board with advantages followed: First‚ wear resistance
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rupees)? a)र10‚450 b) र10‚000 c) र12‚000 d) र11‚881 4. Bronze is an alloy of copper and tin in the ratio of 5 : 1. Brass an alloy of copper and zinc‚ consists of these elements in the ratio of 2 : 3. A new alloy is formed by melting bronze and brass‚ such that the contribution of copper in the new alloy is equal from brass and bronze. By what percent is the quantity of zinc present‚ more than the quantity of tin‚ in the new alloy? a)750% b) 650% c) 50% d) 325% 5. The distance between two stations
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aluminum. However‚ it ’s 45% lighter than steel and only 60% heavier than aluminum. Because titanium is not easily corroded by sea water‚ it is used in propeller shafts‚ rigging‚ and other parts of boats that are exposed to sea water. Titanium and its alloys are used in airplanes‚ missiles‚ and rockets since strength‚ low weight‚ and resistance to high temperatures are needed. Also‚ titanium doesn ’t react within the human body‚ so it ’s used to create artificial hips‚ pins for setting bones‚ and other
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Strength of 220 MPa and an Ultimate Tensile Strength of 430 MPa. Problem 7: A table which has three aluminium alloy legs carries an evenly distributed mass of 225 kg. Each leg is a circular tube of length 90cm‚ inside diameter 4.6cm and outside diameter 5cm. Neglecting the mass of the table and assuming that the legs compress elastically‚ find the compressive stress in one leg. If the alloy has a modulus of elasticity of 70GPa‚ what will be the shortening of the leg? Problem 8: Sketch a load vs.
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