Design and Setup of a BlockonRing Scuffing Machine

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United Arab Emirates University College of
Engineering Training Graduation Projects
Unit Mechanical Engineering Department

• Design and Setup of a Block-on-Ring Scuffing
  Machine

Students Names
ID Numbers
Abeer Rashid Asma Mohamed Basema Saif Rouda
Mubarak Nourah Salem
200104770 200105077 200104687 200105221 200104646
Advisors Name Dr. Saud Aldajah
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Outline
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Objective
To design and set up a block on ring testing
machine.
This machine will enable the users to study

• The scuffing performance of different surface
  coatings.
• Friction behavior and wear mechanisms for various
  
• surfaces.
• Various lubricant additives impact on friction
  and wear
• performance.

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Project Description
Scuffing is a sudden failure of lubricated
surfaces in sliding contact.
Severe scuffing of the cylinder bore
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Project Description
Rectangular block pressed against the periphery
of a ring.
The block is stationary and loaded with a
pneumatic loading system.
The ring is attached to a rotating shaft.
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Methodology
Follow the engineering design process steps
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Methodology
Use Quality Function Deployment (QFD) method.
Analyze each specification in terms of design
requirement
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Methodology
Use matrix decision method.
Analyze each alternative conceptual design in
terms of the specifications.
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Methodology
Machine configuration.
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Methodology
Use the computer aided drawing (AutoCAD).
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Gantt Chart
Gantt Chart for Spring 2007
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Detailed Design
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Block holder
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Upper holder
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Base columns and sheet
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L-Guide
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Front view
Right Side view
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Shaft plate
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Shaft
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Motor Selection
AC Motor
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V-Belt Drive
V-belt
Pulleys
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Manufacturing Processes
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Block and upper holders
Aluminum alloy
Cutting process
Shaping process
Milling process
Finishing process
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Block and upper holders

• Block Holder

• Upper Holder

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Base columns
Steel alloy
Cutting process
Welding process
Finishing process
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Base columns
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Sheet
Aluminum alloy
Cutting process
Final shape
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L-Guide
Steel alloy
Cutting process
Welding process
Milling process
Finishing process
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L-Guide
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Shaft
Steel alloy
Cutting process
Lathe process
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Shaft
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Shaft plate
Aluminum alloy
Lathe process
Final shape
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• Machine Assembly

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• Machine Assembly

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Data acquisition system
10110
Physical Phenomenon
Sensor
Signal Conditioning
A/D Conversion
Computer
Elements of data acquisition
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Load cells calibration
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Load cells calibration

• 50 Ib load cell

• 250 Ib load cell

F250 Ibf 3.846 (9.81) X -0.769 (9.81)
F50 Ibf 0.769 (9.81) X -0.461 (9.81)
F50 Ibf
µ
F250 Ibf
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System simulation
Load cell
LabJack
Computer
Amplifier
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LabVIEW

• Front Panel

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LabVIEW

• Block Diagram

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Test movie
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Results and discussion
The test was run but scuffing did not take place
due to the fact that the load could not be
increased further due to the pneumatic pressure
limitation in the system at the Mechanical
Engineering Department.
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Testing machine impact
This machine can be used to test the impact of
lubricants on the environment by constructing a
chamber or reservoir around the testing area.
Under high temperature, lubricants evaporate.
The vapor can be extracted through tubes that are
connected to the gas analyzer to provide a user
by the percentage of toxic gases in different
lubricants such as H2S, CO2, CO, etc.
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Economic feasibility
In GPI, the cost with the budget for the machine
was estimated.
Total cost was 5560 AED
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Economic feasibility
In GPII, the Graduation Unit gave us 5600 AED.
Total cost is 3598 AED
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Conclusions
Impact of this research
Project Planning Following Engineering Design
Process Materials Selection Cost
Estimation Benefits of Using LabVIEW
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Recommendations
Use 3D load cell. Enhance pneumatic pressure in
the Mechanical Engineering Department Lab. Use
a sensitive pressure regulator. Use a
computerize system to control the pressure.
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Thanks for your attention