Engine valves of motor cars work at temperatures ranges between 500°C and 820°C.
To do high temperature rotating bending fatigue testing, I need information about the testing machine. Is there a standard to do this test?
Look up high temperature fatigue testing. There you will find information, including work with an MTS system.
JJ
Dear D. Martinez Krahmer,
My answer is regarding the last part of the question (about the standard)….
I have no idea if there is some standard specific for this particular component of automobile industry…..I am talking about general practice of rotating bending fatigue test….
As per my understanding, ASTM E2948-14 practices are applicable for any constant temperature irrespective of magnitude…As per section 5.1 of it…”The methodology is capable of high frequency testing provided the temperature of the test article is constant and there is no adiabatic heating of the wire. A constant temperature can be maintained by immersing the specimen in a constant temperature fluid bath or test media.”…. this standard is for testing of solid round fine wire only…..still it can be inferred that at constant temperature testing practices will be same irrespective of temperature magnitude…..Also elevated temperature fatigue design curve in ASME code do not specify any specific way of testing that are used to generate those curves…..In addition ASME collects data from the laboratories across the world, which use ASTM as a standard practice not any hidden special practice of ASME….
Regarding machine….you can give your requirement to any good company e.g. Instron or any other……they would be able to guide you better and even you can ask about the testing standard for your specific purpose with them…
regards
I would also consider Dynamic Systems
http://www.gleeble.com/index.php/products/torsion.html
ASTM E2948 is specifically for wires and may not be applicable in your case.
Yes there are standards for performing rotating bending fatigue tests metallic bars. You refer ISO 1143-2010.
A number of off-the-shelf rotating bending machines are available in the market with high temperature attachments and variable rpm. Contact Zwick-Roell, Instron, BiSS ( I am not sure if MTS manufactures a rotating bending) or Walter-Bai etc. Look for a system/attachment that can be used to test both cylindrical and rectangular specimens.
Hope that helps
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