CAJ | 학술논문

大型实验设备由于表面温度难以控制而使其表面发射率精确测量较为困难。在分析表面发射率测量误差主要来源的基础上，提出一种表面发射率工程测量方法。分析并推导了到达探测器上的辐射量，利用两发射率已知的设备，实现了环境辐射量的测量，从而消除了环境辐射对表面发射率测量的影响，有效提高了测量精度。设计了实验方法并进行了发射率测量实验，实验结果表明未考虑环境辐射的测量方法与该方法的计算结果相对误差可达20.37％，验证了该测量方法的可行性和准确性。
대형실험설비유우표면온도난이공제이사기표면발사솔정학측량교위곤난。재분석표면발사솔측량오차주요래원적기출상，제출일충표면발사솔공정측량방법。분석병추도료도체탐측기상적복사량，이용량발사솔이지적설비，실현료배경복사량적측량，종이소제료배경복사대표면발사솔측량적영향，유효제고료측량정도。설계료실험방법병진행료발사솔측량실험，실험결과표명미고필배경복사적측량방법여해방법적계산결과상대오차가체20.37％，험증료해측량방법적가행성화준학성。
It is difficult to accurately measure the large-scale equipment surface emissivity,because it is difficult tocontrol the temperature of the equipment.A method of emissivity measurement is proposed based on analyzing themain source of emissivity measurement errors.The radiation that reaches the detector is analyzed and derived,environ-mental IR radiation measurements are achieved by using two apparatus with known emissivity,thereby the environmen-tal radiation on the emissivity measurements effects is eliminated.Experimental method is designed and emissivitymeasurements experiment is made,analysis results show that,compared with the method of no considering the environ-mental radiation,there error is reduced by 20.37%.The method has feasibility and accuracy for engineering measure-ment of surface emissivity.