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    Materials Engineering

    Material engineering is an interdisciplinary field applying the properties of matter to various areas of science and engineering. This new scientific field investigates the relationship between the structure of materials at atomic or molecular scales and their macroscopic properties. Materials engineering incorporates elements of applied physics and chemistry.

    In recent years, there has been significant media attention focused on nanoscience and nanotechnology. Material science is now becoming more widely recognized as a specific and unique field. As a result of then, material engineering has become a more reputable degree in universities. Many of the most pressing scientific problems that are currently faced today are due to the limitations of the materials that are currently available and as a result, breakthrough in this field is likely to have a significant impact on the future of human technology.

    The basis of material science involves relating the desired properties and relative performance of a material in a certain application to the structure of the atoms and phases in that material. Major determinants of the structure of a material and thus of its properties are its constituent chemical elements and the way in which it has been processed into its final form.

    Material science encompasses various classes of material which may constitute a separate field. Industrial applications of materials science include material design, cost-benefit trade-offs in industrial production of materials, processing techniques and analytical techniques. Aside from material characterization, a material engineer also deals with the extraction of materials and their conversion into useful forms.

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    BrainMass Categories within Materials Engineering

    Ceramic Engineering

    Solutions: 3

    Ceramic engineering is the science of creating objects from inorganic, non-metallic materials

    Crystal Engineering

    Solutions: 8

    Crystal engineering is the design of molecular solid-state structures with desired properties.

    BrainMass Solutions Available for Instant Download

    Design of the internal fixation plate composite material

    Task: Bioengineer needs to design a plate for the internal fixation of fractures using the Voigt's model. The plate should be made out of composite material containing carbon fibres and PMMA (Poly(methyl methacrylate)). The engineer has tabulated data about material properties (Young's modulus E, mass density ρ and ultimate ten

    Stress relaxation time

    An applied strain of 0.5 produces an immediate stress of 2 MPa in a piece of rubber, but after 10 days, the stress is only 1 MPa. For the following, assume the material obeys a single-exponential relaxation process. a) What is the relaxation time? b) What is the stress after 100 days?

    Partial Pressure of Reactant from Flow Rate

    I am trying to find the partial pressure of ethylene for this equation. The reaction is ethylene polymerization, i.e., ethylene to products which is first order in partial pressure of ethylene: The flow rate of 5% ethylene/He (balance) in gas phase is 50 mL/min for a small laboratory downward reactor tube made up of quartz.

    Concentration of fluid

    The following growth equation was derived for color-dyed rock candy: (see the attachment for the equation), where R is growth rate in units (mm/min) and C is concentration of dye in parts per million (ppm). Growth rate data was collected for the following concentrations: (see the attachment for the table) a) What are the nu

    grams of tin and lead

    An alloy is 7 parts tin and 3 parts lead. How many grams of each are in 40g of the alloy? Let x= the number of grams of tin in the 40g of the alloy. Next, we note that there are 8 total parts of the alloy, of which 7 are tin. Thus 7 is to 8 as x is to ___. How many grams of tin and lead are there and what is the ratio?

    Calculating Heat Energy and Work

    Please see the attached file for the fully formatted problem(s). Problem 1: > A piece of wood is 2ft x 2ft x 0.25 ft ----- the hot plate is also 2ft x 2ft square > A wet piece of wood is placed on a steam heated hot plate ---- the dry weight of the wood is 10 lbs ----- the weight of the water in the wood is

    Kinetics of Particles

    The bungee jumper, an 80kg man, falls from the bridge at A with the bungee cord secured to his ankles, as shown in figure 1. He falls 20m before the 17m length of the elastic bungee cord begins to stretch. The 3m of rope above the elastic cord has no appreciable stretch. The man is observed to drop a total of 44m before being pr

    Heat Transfer : Steam and Aluminum

    1: Steam at 100°C is passed into a condenser at a rate of 500 kg/h and leaves as water at 60°C. If the condenser is supplied with cooling water which enters at 20°C and leaves at 40°C, calculate: a) how much heat per hour is extracted from the steam. b) how much cooling water is needed per hour. 2: A cupola furnace is c

    Risk management, Fragility, Uncertainties, Fault Tolerant Systems, Explosion

    1. A propane tank is located 100 m away from the nearest buildings. The fragility to explosion can be expressed by p = 0 for I < 0.7 MPa ? s p = aI for 0.7 < I < 1.3 MPa ? s p = 1 for I > 1.3 MPa ? s Accounting for various release and ignition scenarios, including uncertainties, the estimated probability distributio

    Chemicals for indoor concrete flooring

    Descriptions of: indoor concrete maintenance chemicals used on indoor concrete flooring - high solids floor finish chemicals used on indoor concrete flooring. What is layman's description on each of these two chemical market segments?

    Matlab -- Developing 22 independent material balances and solving in Matlab

    Please see the attached file for the fully formatted problem(s). Find composition and flow rates from mass percent data. Here's what the 22 independent material balances should supposedly look like: 1. W1 - W2 -W3=0 2. H1 - H2 - H3 = 0 3. S1 - S2 - S3 = 0 4. H2 - H4- H5 = 0 5. W2 - W5 = 0 6. S2-S5 = 0 7. W5-W7=0 8

    Rate of Heat Loss through a Window

    The two surfaces of a window are maintained at specific temperatures. The rate of heat loss through the window and the inner surface temperature are to be determined. Properties: The thermal conuctivity of the glass is given to be k=0.78 W/m·C. The area of the window and the individual resistances are A=(1.2m) x (2m) = 2.4 m

    Heat Transfer through Two Cylindrical Aluminium Bars

    Please see the attached file for the fully formatted problem(s). Two cylindrical aluminum bars with ground surfaces are pressed against each other in an insulation sleeve. For specific top and bottom surface temperature, the rate of heat transfer along the cylinders the temperature drop at the interface are to be determined.

    Chemicals for Indoor Concrete Flooring

    I need some information on the following: - indoor concrete maintenance chemicals used on indoor concrete flooring - high solids floor finish chemicals used on indoor concrete flooring I researched these topics briefly, but I would like to have a layman's description on each of these two chemical market segments. 2 parag

    Deriving the equation for S* for competitive product inhibition.

    Problem Statement: Derive the equation for S* for competitive product inhibiton. Definition of variables: S* = the surface substrate concentration at steady state. (For plug flow reactor); Sb = bulk substrate conc; Ks = mass transfer coeff; Ki = competitive inhibition rate constant; Km = substrate conc that give 1