Fiber Optic Sensing System
Demonstration on Pressure Vessels
Jefferson Brand III
April 22, 2015
Masters
Mechanical Enginee...
National Aeronautics and Space Administration Your Title Here 2
Background
• Born in Alexandria, MN
• Attended Robotics Cl...
National Aeronautics and Space Administration
Fiber Optic Sensing System (FOSS)
• FOSS is a system that uses lasers to det...
National Aeronautics and Space Administration
Fiber Bragg Grating
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Figure 1: Reflected and transmitted li...
National Aeronautics and Space Administration
Statement of The Problem
• The Pail in Figure 2. is created to test the
FOSS...
National Aeronautics and Space Administration
Objectives
• To demonstrate the Fiber Optic Sensing System (FOSS) capabiliti...
National Aeronautics and Space Administration
Proposal
• To make a system that uses pneumatic valves to allow air pressure...
National Aeronautics and Space Administration
Proposed design
Your Title Here 8
Output
Input
Adjustable
pressure
release
v...
National Aeronautics and Space Administration
Advantages and Disadvantages
Advantage:
•Physical contact has been reduced t...
National Aeronautics and Space Administration
Changes to the design
• A air tank has been added to make the system portabl...
National Aeronautics and Space Administration
Pail (Pressure Vessel)
• UN-Compliant Plastic Shipping Pail with
Opening, Ro...
National Aeronautics and Space Administration
Air Tank
• JEGS Performance Products W10005
Portable Air Tank
• Has 2.25 loo...
National Aeronautics and Space Administration
Pressure Vessel System (With out
compressor)
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Figure 4: pr...
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Mapping and Warning Indication
Your Title Here 14
National Aeronautics and Space Administration
Pressure Vessel Demonstration
Your Title Here 15
National Aeronautics and Space Administration
Air Tank Demonstration
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National Aeronautics and Space Administration
List of materials
2 – Masterkleer Color PVC Tubing, Green, ¼” Inner Diameter...
National Aeronautics and Space Administration
List of materials cont.
2 – Push-to-Connect Tube Fitting for Air, Tee for 3/...
National Aeronautics and Space Administration
List of materials cont.
1 – 1/4 NPT Full Port Ball Valve: $7.96
2 – 1/4 FNPT...
National Aeronautics and Space Administration
Results
• A pressure vessel that uses pneumatics to increase or decrease the...
National Aeronautics and Space Administration
References
1. Emmons, M., Karnani, S., Trono, S., Mohanchandra, K., Richards...
National Aeronautics and Space Administration Your Title Here 22
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NASA Exit Presentation 2015

Published on: Mar 3, 2016
Source: www.slideshare.net


Transcripts - NASA Exit Presentation 2015

  • 1. Fiber Optic Sensing System Demonstration on Pressure Vessels Jefferson Brand III April 22, 2015 Masters Mechanical Engineering Frank Pena Fiber Optics Lab National Aeronautics and Space Administration www.nasa.gov
  • 2. National Aeronautics and Space Administration Your Title Here 2 Background • Born in Alexandria, MN • Attended Robotics Club at South Dakota State University (SDSU) • A Formal Activities Chair for American Society of Mechanical Engineers at SDSU, 2013 to 2014 • Graduated from SDSU with a Bachelors in Mechanical Engineering in May 2014 • Interned at four organizations: University of Minnesota: Morris, MN, Summer of 2010 Gryodata: Houston, TX, Summer of 2012 NASA Goddard Space Flight Center: Greenbelt, MD, Summer of 2013 and 2014 NASA Armstrong Flight Research Center: Palmdale, CA, Spring 2015 • Attending University of North Dakota in Mechanical Engineering with a emphasis in Robotics
  • 3. National Aeronautics and Space Administration Fiber Optic Sensing System (FOSS) • FOSS is a system that uses lasers to detect Strain in the fibers • Fiber Bragg Grating(FBG) in the fibers at regular intervals • FBG change index of refraction and grating planes when fiber is experiences strain • The laser transmitted through the grating • A small wave length of the laser is reflected back • The reflected wave length is then measured • Allows for measurement the elongation of the fiber • Is applied for strain gauges on aircraft • Is currently being tested to detect fluid levels at different temperatures Your Title Here 3
  • 4. National Aeronautics and Space Administration Fiber Bragg Grating Your Title Here 4 Figure 1: Reflected and transmitted light through a Bragg grating (1)
  • 5. National Aeronautics and Space Administration Statement of The Problem • The Pail in Figure 2. is created to test the FOSS systems on a containers which would be later used in demonstration • The demonstration requires interaction to show the FOSS sensor reading • Minimum protection with the fibers • Make a system that would restrict the participants contact with the pressure vessel Your Title Here 5 Figure 2: Original Pail
  • 6. National Aeronautics and Space Administration Objectives • To demonstrate the Fiber Optic Sensing System (FOSS) capabilities with a pressure vessel • Allow participants to increase and decrease pressure inside a pressure vessel • Have a system that would allow participants interact with the vessel through two controlled devices • Create a map of the sensors for the new pressure vessel with FBG fiber • Safety devices that would prevent failure of the pressure vessel or damage the FBG fiber Your Title Here 6
  • 7. National Aeronautics and Space Administration Proposal • To make a system that uses pneumatic valves to allow air pressure to increase or decrease inside the pressure vessel • The pressure controls of the system are two, two stage (open or close) air direction mechanical operated valves that can return to close automatically. • FOSS system integrated on the pressure vessel to demonstrate the abilities of the FOSS for pressure containers • A pressure relief valve to prevent future damages to the FOSS system’s fiber optics and pressure vessel Your Title Here 7
  • 8. National Aeronautics and Space Administration Proposed design Your Title Here 8 Output Input Adjustable pressure release valve Pressure vessel Air Compressor
  • 9. National Aeronautics and Space Administration Advantages and Disadvantages Advantage: •Physical contact has been reduced to two levers from the valves •Can connect to an air compressor that is available at current facility •Programming is not needed for pressure control •Pressure relief valve to control the Max pressure allowed in the pressure vessel Disadvantage: •No visible pressure gauge •Pressure vessel not designed to hold pressure or minimum pressure •Compressor output pressure need regulation •Needs an external air supply Your Title Here 9
  • 10. National Aeronautics and Space Administration Changes to the design • A air tank has been added to make the system portable to power scarce locations • FBG has been added to the air tank • Programs had been created to map the sensors on the tank • A program has been created to indicate operator when the pressure inside the pressure vessel is at critical levels • The input directional valve been replaces with a ball valve and a flow regulator valve with a pressure gauge Your Title Here 10
  • 11. National Aeronautics and Space Administration Pail (Pressure Vessel) • UN-Compliant Plastic Shipping Pail with Opening, Round, Flip-Up Handle, 5 Gallon Capacity, Blue • 3 loops of FBG epoxy onto the exterior of the pail • FBG protected with a clear tape • A existing cap from previous pail is used • Connects to the FOSS system • Max pressure is small (Unreadable from the Pressure Gauge) Your Title Here 11 Figure 3: New Pail With FBG
  • 12. National Aeronautics and Space Administration Air Tank • JEGS Performance Products W10005 Portable Air Tank • Has 2.25 loop of FBG • Has a protective layer of clear tape for the FBG • The hose provided with the tank has been removed for a slide connect tip • Has a valve that opens or closes the tank Your Title Here 12 Figure 3: Air Tank With FBG Fiber
  • 13. National Aeronautics and Space Administration Pressure Vessel System (With out compressor) Your Title Here 13 Figure 4: pressure vessel with hose and valves
  • 14. National Aeronautics and Space Administration Mapping and Warning Indication Your Title Here 14
  • 15. National Aeronautics and Space Administration Pressure Vessel Demonstration Your Title Here 15
  • 16. National Aeronautics and Space Administration Air Tank Demonstration Your Title Here 16
  • 17. National Aeronautics and Space Administration List of materials 2 – Masterkleer Color PVC Tubing, Green, ¼” Inner Diameter (ID), 3/8” Outer Diameter (OD), 1/16” Wall thickness, 10’ Length: $16.10 each 2 – Industrial-Shape Hose Couppling, Plug, Zinc-Plated, for ¼” Hose ID, ¼ Coupling Size: $2.15 each 2 – Hand-Operated Miniture Air Control Valve, Auto Return, 2 Ports, 1/8 NPT Female Inlet/Outlet: $29.47 each 5 – Push-to-Connect Tube Fitting for Air, Straight adapter for 3/8” Tube OD x 1/8 NPT Male: $5.83 each 1 – Industrial-Shape Hose Coupling, Sleeve-Lock Socket, Brass, ¼” NPTF Male, ¼ Coupling Size: $9.85 Your Title Here 17
  • 18. National Aeronautics and Space Administration List of materials cont. 2 – Push-to-Connect Tube Fitting for Air, Tee for 3/8” Tube OD: $6.60 2 – Push-to-Connect Tube Fitting for Air, Straight adapter for 3/8” Tube OD x 1/4 NPT Male: $4.33 each 1 – 1/4 NPT In-line Regulator With Gauge: $17.48 1 – Panel-Mount Polysulfone Pressure Regulator for Air, 1/8 NPT Female, 0.5 to 90 PSI: $40.88 1 – UN-Compliant Plastic Shipping Pail with Opening, Round, Flip-Up Handle, 5 Gallon Capacity, Blue: $25.47 Your Title Here 18
  • 19. National Aeronautics and Space Administration List of materials cont. 1 – 1/4 NPT Full Port Ball Valve: $7.96 2 – 1/4 FNPT x 1/4 FNPT Female Coup: $1.56 1 – JEGS Performance Products W10005 Portable Air Tank: $25.99 Total Cost: $277.20 Your Title Here 19
  • 20. National Aeronautics and Space Administration Results • A pressure vessel that uses pneumatics to increase or decrease the amount of pressure • A system that is mobile if needed • Both the pail and the air tank can be demonstrations of the FOSS system • The system can indicate if the pressure vessel is going over the recommended strain • Maps that shows the both thermal and stress induced strain • Pail’s Max. Pressure is lower that it is unreadable on the pressure gauge • The system with no FBG: $277.20 Your Title Here 20
  • 21. National Aeronautics and Space Administration References 1. Emmons, M., Karnani, S., Trono, S., Mohanchandra, K., Richards, W., & Carman, G. (n.d.). Strain Measurement Validation of Embedded Fiber Bragg Gratings. International Journal of Optomechatronics, 22-33. Your Title Here 21
  • 22. National Aeronautics and Space Administration Your Title Here 22

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