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Published byJoella Banks Modified over 9 years ago
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Project Description: Dr. Iglesias-Victoria, a professor at Rochester Institute of Technology (RIT), is interested in the design and fabrication of a specialized wear testing machine. The device will be part of a new KGCOE lab, bringing friction testing capabilities to the mechanical engineering department. The machine must be designed such that it can test lubricated specimens in accordance with ASTM standard D5707-11, as well as unlubricated specimens in accordance with ASTM G133-05. The device will have data acquisition capabilities such that frictional force, test duration, and operational frequency can be monitored and recorded. As an MSD II project, the friction tester must be designed and built by a single team. Key Stakeholders: Dr. Iglesias-Victoria is the primary stakeholder for this project. The device will be similar in function and performance to existing machines, but will be specialized towards the needs of Dr. Iglesias. The device will be located in her personal lab in KGCOE. Seeking Feedback: Are there testers out there that will do everything we need, and still cost less than $25,000? What is the required accuracy of these machines? What parameters are typical of friction testers that we have not uncovered? Voice of the Customer: P14600 Friction Wear Tester CategoryRequirement 1.1CostProject budget is approximately $25,000 1.2CostPin, Ball, and Cylinder holders are purchased from manufacturers. (Est. ~$200 each) 1.3CostCalibrated weights are purchased from manufacturers. (Unknown cost) 2.1SafetyMachine can be left unattended for long periods of time. (up to 24 hours) 2.2Safety(TBC) Machine automatically shuts off if something on the machine fails. 3.1OperationFrequency range of 1 to 10Hz in increments of 1 Hz. 3.2OperationStroke length of 4 to 10 mm. 3.3OperationTesting loads range from 0.5 to 20N. Specific weights: 0.5, 1, 2, 5, 10, and 20N. 3.4OperationTesting time ranges from 10 minutes to 24 hours. 3.5OperationManual application of lubricant 3.6OperationMachine stops automatically when testing is complete. 4.1Ease of UseCalibration instructions 4.2Ease of UseSetup instructions 5.1PhysicalWith no load attached, the contact arm exerts near-zero force on specimen. 5.2PhysicalSpecimen is easily removable 5.3PhysicalVarious sizes and shapes of specimens are testable. 5.4Physical(TBC) Specimen or contact heating system capable of reaching 500°C 5.5PhysicalTester isolated from table. (vibration prevention) 5.6PhysicalTest contact types are interchangeable. 5.7PhysicalMachine footprint approximately 2 ft. by 1 ft. 6.1Data AcquisitionLabview Interface 6.2Data AcquisitionStrain gauge or alternative used to measure deflection of arm (converted to frictional force) 6.3Data AcquisitionFriction force over time is monitored. 6.4Data Acquisition(TBC) Temperature of specimen over time is monitored. 6.5Data AcquisitionOperating Frequency is monitored. 6.6Data AcquisitionMotor controllable through DAQ interface. 7.1GeneralMachine reciprocates in a linear fashion. 8.1Action Itemsdefine min/max size and geometries of test specimens 8.2Action Itemsdefine what it means to have easily removable test specimen 8.3Action Itemsfind accuracy and precision of weights, friction coefficient etc. 8.4Action Itemshow much machine chatter is allowed 8.5Action Itemscreate minimum customer requirements- separate essentials from extras 8.6Action ItemsGet quote for similar complete friction tester
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