A test apparatus for the corrosion fatigue evaluation of vehicle chassis parts can ensure more realistic and exact estimation of lifespan against corrosion fatigue and perform a fatigue test of troubled component under all corrosion environments. A test apparatus for the corrosion fatigue evaluation of vehicle chassis parts comprises a corrosion test tub(120) in which a chassis part(1), a test object, is loaded and the corrosion solution is filled; a corrosion solution circulator(130) spraying the corrosion solution stored in the apparatus of liquid tank(131) into the corrosion test tub by using pumps(133,136) and circulating it between the corrosion test tub and a liquid tank; an actuator(140) applying a repeated load to the chassis part in the corrosion test tub; a control computer(150); a temperature sensor(161) and a humidity sensor(162) which detect temperature and humidity and input to the control computer; a temperature controller(163) controlling the temperature in the corrosion test tub; and a humidity controller(164) controlling the humidity in the corrosion test tub.
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