Highly accelerated stress test device and method for highly accelerated stress test

A highly accelerated stress test device comprising:

• a test space where a sample is placed therein;
• a steam generating space that generates steam to be supplied to the test space;
• a first heater that heats the test space;
• a second heater that heats the steam generating space;
• a first temperature sensor that measures a temperature of the test space;
• a second temperature sensor that measures a temperature of the steam generating space;
• an item temperature sensor that is directly attached to the sample placed in the test space and that measures a temperature of the sample;
• and
• a controller that receives respective measured values of the first temperature sensor, the second temperature sensor, and the item temperature sensor, and that carries out on-off control of each of the first heater and the second heater, wherein
• the controller prepares, as candidates for a test mode to be set, a normal mode in which the on-off control is carried out based on the measured values of the first temperature sensor and the second temperature sensor, and an item-temperature mode in which the on-off control is carried out based on the measured values of the item temperature sensor and the second temperature sensor, and
• the controller carries out the on-off control according to the test mode that is set with a test condition of the sample.