http://sop.mse.mtu.edu/index.php?action=history&feed=atom&title=Nanoindentation 2026-06-03T06:20:59Z Revision history for this page on the wiki MediaWiki 1.37.2 http://sop.mse.mtu.edu/index.php?title=Nanoindentation&diff=218&oldid=prev 2022-05-24T19:05:58Z

<p>Copied from old</p> <p><b>New page</b></p><div>[[Category: SOP]]<br /> <br /> The following is an SOP for the nanindentation of High Pressure Die Cast(HPDC) aluminum samples<br /> <br /> =Loss Prevention=<br /> * Electromagnetic Actuator (Inforce 1000) costs $50,000 to replace<br /> **Very sensitive. It only has a displacement range of 80μm after which is break.<br /> **Be extremely careful to avoid bumping the actuator when working in and around the machine<br /> *vibration isolation table and ballast plates<br /> **The table has red pins that control whether or not it floats. <br /> ***ensure that the pins are out when the nanoindenter is working and avoid bumping the table to ensure optimal performance by the indenter.<br /> <br /> =Procedure=<br /> # Prepare samples by mounting and polishing them.<br /> #*Subsurface damage can negatively impact test quality. Be sure that both the surface and subsurface of samples are free of damage<br /> #*Sample should be very flat to ensure good results<br /> #Open Environmental enclosure<br /> #Remove specimen stage<br /> #*In software first eject the stage and then remove.<br /> #*The stage is secured in the machine with magnets. Apply steady, controlled force when working near the actuator.<br /> #Mount 1 sample on stage .<br /> #*Fused silica mount always stays on the stage as a control for the nanoindenter (the machine tests the fused silica before and after each set of indents).<br /> #*The fused silica is used as a calibration at the start of the experiment. <br /> #*Ensure that the sample surface is level with the 4 pillars on the corners of the stage.<br /> #*Use screw pins to secure the sample mount in the stage<br /> #Carefully place stage back into indenter<br /> #Initiate software to load the stage.<br /> #Use software and optical scope in the indenter to identify locations where experiments are to be run<br /> #Test parameters and sizes vary. <br /> #Select settings and set machine to run<br /> #Most quality experiments will run over night, especially if the allowed thermal stability criteria is low<br /> <br /> =Test Parameters=<br /> Electromagnetic Actuator (Inforce 1000)<br /> *Displacement range =</div>

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