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Project 2

Project 2. Team 3 Section 4. Initial Concepts. Optical Sensing of Density and 3D Shape Detects height, volume, and center of gravity using cameras and lasers in order to identify metal composition using an algorithm Electromagnetic Transmission Sensor

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Project 2

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  1. Project 2 Team 3 Section 4

  2. Initial Concepts • Optical Sensing of Density and 3D Shape • Detects height, volume, and center of gravity using cameras and lasers in order to identify metal composition using an algorithm • Electromagnetic Transmission Sensor • Pulsed magnetic field is applied for metallurgical property evaluation and a conductivity curve is used to determine the position for each metal

  3. Initial Concepts • Absorption Spectrophotometry • Conduct an experiment by oxidizing a sample of steel and testing for manganese content using a spec 20 and Beer’s law • Koslow Chemical Testing • Uses a thin layer of chemical reaction paper to detect certain alloys by applying an electrical current and using color recognition censors

  4. Selection Matrix

  5. Selection Process • Three of the initial concepts tied • Research to find a way to combine the ideas • Proposed using Laser Induced Breakdown Spectroscopy (LIBS) • Combined laser and optics with chemical testing • Ran the new concept through the matrix • It received the best overall rating

  6. LIBS • The laser shoots a pulse onto the sample for 5-20 nanoseconds • The laser creates a plasma which ionizes the alloys in the sample causing the electrons to become excited • As the electrons relax and fall down to their ground state, spectral emissions are given off • Each spectral emission is unique for each element and is read by a spectrometer • From this data, elements and their concentrations can be determined

  7. LIBS http://science.howstuffworks.com/laser-analysis4.htm

  8. Benefits of LIBS • No sample preparation • quick and inexpensive • Non-destructive process • Requires little energy • 10-100 millijoules per pulse • Can analyze a sample from a distance • Can be incorporated into an industrial process

  9. Industrial Process • Separate automobiles from other items before the scrap process • Scrap automobiles separately • Separate ferrous materials • Put the automobile scrap on a conveyor belt where it will go into the LIBS system • Once composition of the sample is determined, any sample with a manganese content of around 1.5% weight will be sent to the AHSS pile, while the other scrap will continue to the non AHSS pile

  10. Industrial Process Continued • The AHSS is separated from the other scrap by using the concentration data stored on the computer and a system of 3D imaging machines and air cylinders to push the samples down the right paths • The AHSS scrap can then be introduce into the steel making process to produce LCAK steel or utilize the alloy composition to decrease alloy costs

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