tribo testing
DESCRIPTION
Penjelasan mengenai triobo testing pada suatu deviceTRANSCRIPT
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Tribo Testing
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Classification oftribotests according tothe degree of realism
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Concept of tribo tester+ tujuan ?+ perbedaan antara tensile test, fatigue test, hardness test, dst
dengan wear & friction test ?+ hal-hal yang perlu diperhatikan dalam membuat model test ?
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The tribological process in a contact between two surfaces includes mechanical andtribochemical changes as well as material transfer. The changes are determined bymaterial and energy input parameters and result in a similar set of partly changed outputparameters.
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Testing methods Tribometer (1774): instrument intended to measure
friction (tribotester) Two types: symmetric, asymmetric Contact: conformal and counterformal (concentrated) ASTM G77: block on ring ASTM G83: crossed cylinder ASTM G99: pin on disc DIN 50324: sphere on disc ASTM G98: rotating pin-on-flat
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Common slidingwear testconfiguration
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Counterformal andconformal contacts
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Ranking of materials for existing equipments Selection of materials for new applications Application independent, characterization of wear and
friction properties of materials Studies of wear mechanisms appearing in selected
tribological applications
REASONS TO PERFORM A TRIBOTEST:
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Specify the reasons to perform the tribotest Select tests providing the closes possible resemblance to the
application in mind Make sure the correct wear mechanism or surface damages are
imitated in the test Select a test which is reasonably quick, controllable and cost effective Use appropriate reference materials
RECOMMENDATIONS FOR TRIBOTESTPLANNING
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