DETERIORATION DISPLAY DEVICE

• Main Author: YAMASHITA YOSHIYA
• Format: Patent
• Language: English; Japanese
• Published: 14.10.2021
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

To provide a deterioration display device capable of indicating the heat history of a component.SOLUTION: The deterioration display device indicates the degree of deterioration due to the heat of a component. The deterioration display device includes: a heat storage layer formed over the outer peripheral surface of the component, which has the heat storage property, and the life of which at the first temperature is shorter than the endurance time of the part at first temperature; a first insulation layer formed over the upper surface of the heat storage layer, which has the thermal insulation property, and the life of which at the first temperature is the value obtained by subtracting the life of the heat storage layer from the durability time of the part; a temperature indicator layer formed over the upper surface of the first insulation layer and changes the color when the second temperature is exceeded; and a second insulation layer formed over the upper surface of the temperature indicator layer, which has heat resistance.SELECTED DRAWING: Figure 2 【課題】部品の熱履歴を表示する。【解決手段】部品の熱による劣化の程度を表示する劣化表示装置であって、部品の外周面に設けられ、蓄熱性を有し、第１温度での寿命が部品の第１温度での耐久時間より短い蓄熱層と、蓄熱層の上面に設けられ、断熱性を有し、第１温度での寿命が、部品の耐久時間から蓄熱層の寿命を減じた値である第１断熱層と、第１断熱層の上面に設けられ、第２温度を超えると変色する示温層と、示温層の上面に設けられ、断熱性を有する第２断熱層と、を備える。【選択図】図２