Thermal fatigue testing device and recording medium recorded with a program

A thermal fatigue testing device, comprising:

• a tube member, having a gas flow path formed therein from a first end to a second end, such that gas flows from the first end through the gas flow path, and having a test body arranged at a second end side thereof,
• a heat generating body provided in the gas flow path that heats gas flowing through the gas flow path;
• a test body temperature detection component that detects a temperature of the test body;
• a deviation calculation component that, based on time-series data of target temperatures for changing a temperature of the test body to between predetermined upper and lower limits according to a time-series, calculates, at regular intervals of a predetermined number of cycles, at least one of a deviation between an upper limit temperature of the test body indicated by a detection signal from the test body temperature detection component and an upper limit temperature indicated by a time-series data of a target temperature, or a deviation between a lower limit temperature of the test body indicated by a detection signal from the test body temperature detection component and a lower limit temperature indicated by a time-series data of the target temperature;
• a correction component that, based on the time-series data of the target temperature, and the deviation calculated by the deviation calculation component, corrects a current target temperature of the test body using a first correction value which is based determined on the deviation;
• a correction value calculation component that, based on a deviation between the temperature of the test body detected by the test body temperature detection component, and the corrected target temperature determined by the correction component, calculates a second correction value to further correct the corrected target temperature;
• a derivation component that, based on a previously obtained relationship that relates a temperature difference between a temperature of the test body and a temperature of a gas blown to the test body to a temperature gradient of a target temperature indicated by time-series data of the current target temperature, derives a temperature difference between a temperature of the test body and a temperature of a gas blown to the test body that corresponds to a temperature gradient of the target temperature indicated by time-series data of the current target temperature;
• a target temperature calculation component that, based on the corrected target temperature determined by the correction component, the second correction value, and the temperature difference derived by the derivation component, calculates a target temperature of a gas blown to the test body, and
• a heat generating body control component that, based on a previously determined relationship between a temperature of a gas blown to the test body and a temperature of a gas at a heat generating body final end portion, and based on the target temperature calculated by the target temperature calculation component, derives a temperature of gas at the heat generating body final end portion that corresponds to the target temperature, and controls an amount of heat generation from the heat generating body to achieve the derived temperature.

A storage medium readable by a computer, the storage medium storing a program of instructions executable by the computer to perform as:

• a deviation calculation component that, with respect to a test body which is arranged at a second end side of a tube member having a gas flow path formed therein from a first end to a second end, such that gas flows from the first end through the gas flow path, and having the test body arranged at a second end side thereof, based on time-series data of target temperatures for changing a temperature of the test body to between predetermined upper and lower limits according to a time-series, calculates, at regular intervals of a predetermined number of cycles, at least one of a deviation between an upper limit temperature of the test body indicated by a detection signal from a test body temperature detection component that detects a temperature of the test body, and an upper limit temperature indicated by a time-series data of a target temperature, or a deviation between a lower limit temperature of the test body indicated by a detection signal from the test body temperature detection component and a lower limit temperature indicated by a time-series data of the target temperature;
• a correction component that, based on the time-series data of the target temperature, and the deviation calculated by the deviation calculation component, corrects a current target temperature of the test body using a first correction value which is based determined on the deviation;
• a correction value calculation component that, based on a deviation between the temperature of the test body detected by the test body temperature detection component, and the corrected target temperature determined by the correction component, calculates a second correction value to further correct the corrected target temperature;
• a derivation component that, based on a previously obtained relationship that relates a temperature difference between a temperature of the test body and a temperature of a gas blown to the test body to a temperature gradient of a target temperature indicated by time-series data of the current target temperature, derives a temperature difference between a temperature of the test body and a temperature of a gas blown to the test body that corresponds to a temperature gradient of the target temperature indicated by time-series data of the current target temperature;
• a target temperature calculation component that, based on the corrected target temperature determined by the correction component, the second correction value, and the temperature difference derived by the derivation component, calculates a target temperature of a gas blown to the test body, and
• a heat generating body control component that, based on a previously determined relationship between a temperature of a gas blown to the test body and a temperature of a gas at a heat generating body final end portion, and based on the target temperature calculated by the target temperature calculation component, derives a temperature of gas at the heat generating body final end portion that corresponds to the target temperature, and controls an amount of heat generation from the heat generating body to achieve the derived temperature.