Electroacoustic method for nondestructively monitoring the internal
temperature of objects
    1.
    发明授权
    Electroacoustic method for nondestructively monitoring the internal temperature of objects 失效
    用于非破坏性地监测物体内部温度的电声法

    公开(公告)号:US4469450A

    公开(公告)日:1984-09-04

    申请号:US383426

    申请日:1982-06-01

    IPC分类号: G01K11/22 G01K11/24 G01M17/02

    CPC分类号: G01K11/24

    摘要: A method for nondestructively monitoring the internal temperature of objects having poor thermal conductance, such as tires, includes the initial steps of determining the internal temperature of a reference object or a representative portion thereof at a plurality of internal temperatures (T), measuring a plurality of pulse propogation times (t.sub.T) taken by an ultrasonic frequency pulse signal to propogate through the reference object or a representative portion thereof at the plurality of internal temperatures (T), and establishing a relationship between the determined plurality of internal temperatures (T) and the associated plurality of pulse propogation times (t.sub.T). Thereafter the unknown internal temperature (T.sub.U) of the object to be monitored may be found by measuring the pulse propogation time (t.sub.TU) taken by an ultrasonic frequency pulse signal to propogate therethrough and determining the unknown internal temperature (T.sub.U) from correlating the measured pulse propogation time (t.sub.TU) at the unknown internal temperature (T.sub.U) to the relationship. Where the propogation paths in the sample object and object to be monitored have significantly different lengths, the aforesaid relationship may be made independent of the dimensions of both objects.

    摘要翻译: 用于非破坏性地监测诸如轮胎的导热性差的物体的内部温度的方法包括在多个内部温度(T)下确定参考物体或其代表部分的内部温度的初始步骤,测量多个 通过超声频率脉冲信号获取的脉冲传播时间(tT),以在所述多个内部温度(T)下通过所述参考对象或其代表部分传播,并且确定所确定的多个内部温度(T)和 相关联的多个脉冲传播时间(tT)。 此后,可以通过测量由超声频率脉冲信号获取的脉冲传播时间(tTU)来传播,从而将待测对象的未知内部温度(TU)从发现的内部温度(TU)与确定未知内部温度(TU)相关联 传播时间(tTU)在未知内部温度(TU)下的关系。 在样本对象中的传播路径和待监视对象具有显着不同的长度的情况下,上述关系可以独立于两个对象的维度。