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| − | Olympus BH Microscope
| + | Carl Zeiss Axio A1-Scope with Axiocam ERc 5S Microscope and Camera |
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| | Used to: | | Used to: |
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| | #HFRR | | #HFRR |
| | #SRV | | #SRV |
| − | [[File:IMG 4455.JPG|400px|Right|thumb|BOCLE(Left) & SL-BOCLE(Right)]]
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| − | Both the Ball On Cylinder Lybricity Evaluator (BOCLE) and the Scuffing Load - Ball On Cylinder
| + | The microscope is used to capture an image of a contact surface after a lubricity test was performed. The surface appearance of the wear scar can then be rated and the wear scar measured. The microscope is equipped with three lenses that are used to obtain different enlargements of the image. These include a 5x-, 10x- and 20x zoom. |
| − | Lubricity Evaluator work on the principle of testing the lubricity of a fuel/lubricant. A non-rotating
| + | |
| − | ball is forced against a rotating cylinder. The cylinder is partially immersed in a bath of the fuel to
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| − | allow the fuel to be constantly carried to the area of contact.
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| − | | + | |
| − | The BOCLE & SL-BOCLE machines operate on much the same principals. They are nearly identically | + | |
| − | constructed. They differ in:<br/>
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| − | 1) The types of fuels they typically test.<br/>
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| − | 2) The qualifying parameters and test methods (See ASTM link below).<br/>
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| − | 3) The maximum load they can carry.<br/>
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| − | <br/>
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| − | The BOCLE is a wear test. A microscope and camera is used to quatify the size and record the appearance.
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| − | The SL-BOCLE is a load carrying capacity test. A series of loads are applied until a sudden
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| − | change in the friction coefficient is observed (higher than 0.175). This load then represents
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| − | some of the lubricity behaviour.<br/>
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| − | Note the suggested loading sequence in the operating manual.
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| − | | + | |
| − | [[File:IMG 4440.JPG|400px|right|thumb|Ball,Ring & Bath]]
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| − | In this Table some basic differences are presented:
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| − | | + | |
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| − | [[File:BOCLE table 2.jpg]]
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| − | Both units are operated via a simulink interfaces found on the PC next to the units (Univ PC nr: 766118).
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| | + | Below is an image of the microscope without the camera. |
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| | + | [[File:Axio-lab-a1.png]] |
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| | + | The microscope with the camera attached is shown in the following image. |
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| | + | [[File:Scope-axiocam.png]] |
| | == Documentation == | | == Documentation == |
| | | | |
| | | | |
| | === User Manual === | | === User Manual === |
| − | A single user manual exists for both machines.
| + | The user manual for the microscope : |
| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20User%20Manual.pdf click here]
| + | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/Carl%20Zeiss/AxioScope_usermanual.pdf] |
| − | === ASTM Standards ===
| + | |
| − | BOCLE (ASTM D5001)
| + | |
| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/ASTM%20D5001%20BOCLE.PDF click here] | + | |
| − | <br/>
| + | |
| − | SL-BOCLE (ASTM D6078)
| + | |
| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/ASTM%20D6078%20SLBOCLE.PDF click here]
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| − | | + | |
| − | === MSDS of relevant Chemicals ===
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| − | Acetone
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/MSDS%20Acetone.pdf click here]
| + | |
| − | <br/>
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| − | Isooctane
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/MSDS%20Isooctane.pdf click here]
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| − | <br/>
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| − | Isopropyl alcohol
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/MSDS%20Isopropyl%20alcohol.pdf click here]
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| − | <br/>
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| − | Reference fuels (A&B)
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/MSDS%20Ref%20fuels.doc click here]
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| − | | + | |
| − | === Wiring, Flow & Instrumentation diagrams ===
| + | |
| − | Overall wiring diagram <br/>
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| − | BOCLE<br/>
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20overall2012.pdf PDF]
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20overall22012.vsd VISIO]<br/>
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| − | SL-BOCLE<br/>
| + | |
| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/SLBOCLE%20overall2012.pdf PDF]
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/SLBOCLE%20overall22012.vsd VISIO]
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| − | | + | |
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| − | Detailed Opto wiring diagram <br/>
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| − | BOCLE<br/>
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20wiring2012.pdf PDF]
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20wiring22012.vsd VISIO]<br/>
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| − | SL-BOCLE<br/>
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/SLBOCLE%20wiring2012.pdf PDF]
| + | |
| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/SLBOCLE%20wiring22012.vsd VISIO]<br/>
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| − | | + | |
| − | | + | |
| − | Piping diagram (Air flow)
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| − | Identical for both
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| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20piping%20diagram.pdf click here]
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| | == History of this Equipment == | | == History of this Equipment == |
| − | The equipment was recieved from Sasol in 2012 after being used there for a period of time. | + | The microscope was recieved in 2013. |
| − | The equipment was conntected to the OPTO 22 network in 2012 by Jacques Langenhoven to allow data
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| − | logging and control through the lab network and OPTO system.
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| | == Current/Previous projects == | | == Current/Previous projects == |
| − | | + | The microscope is used along with all lubricity tests. |
| − | === 2012 ===
| + | |
| − | Jacques Langenhoven, '''The commissioning of the BOCLE & SL-BOCLE in the Tribology lab'''<br/>
| + | |
| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20report2012.pdf PDF]<br/>
| + | |
| − | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20report22012.doc MS WORD]
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The microscope is used to capture an image of a contact surface after a lubricity test was performed. The surface appearance of the wear scar can then be rated and the wear scar measured. The microscope is equipped with three lenses that are used to obtain different enlargements of the image. These include a 5x-, 10x- and 20x zoom.
