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    Method of determination of corrosion rate
    1.
    发明授权
    Method of determination of corrosion rate 失效
    腐蚀速率测定方法

    公开(公告)号：US07553449B2

    公开(公告)日：2009-06-30

    申请号：US10946049

    申请日：2004-09-21

    申请人： Mohsen S. Yeganeh ,  Shawn M. Dougal ,  Cheayao Zhang ,  Saul C. Blum ,  H. Alan Wolf ,  Glen Barry Brons

    发明人： Mohsen S. Yeganeh ,  Shawn M. Dougal ,  Cheayao Zhang ,  Saul C. Blum ,  H. Alan Wolf ,  Glen Barry Brons

    IPC分类号： G01N17/00

    CPC分类号： G01N17/00

    摘要： The corrosion rate of a metal immersed in a fluid medium is measured by transmission of a beam of radiation normally in the visible or near infra-red portion of the spectrum, through a thin film of the metal immersed in the medium. The film of the metal is suitably supported on a radiation-transmitting substrate such as a glass plate or slide. The corrosion rate can be determined by passing a radiation beam through the metal film sample using a twin beam system to compensate for instrument factors such as the absorbance by the fluid medium, the cell windows and the film-supporting substrate. As the thickness of the film decreases, the reduction in film thickness is determined by the increase in beam intensity, using a reference beam to compensate for the instrument factors.

    摘要翻译： 浸在流体介质中的金属的腐蚀速率通过浸入介质中的金属薄膜透射通常在光谱的可见光或近红外部分的辐射光束来测量。 金属膜适当地支撑在诸如玻璃板或载玻片的辐射透射基板上。 可以通过使用双束系统使辐射束通过金属膜样品来补偿仪器因素，例如流体介质，电池窗口和膜支撑衬底的吸光度来确定腐蚀速率。 随着膜的厚度减小，膜厚度的降低由光束强度的增加决定，使用参考光束来补偿仪器因素。

    DETERMINING THE RESONANCE PARAMETERS FOR MECHANICAL OSCILLATORS
    6.
    发明申请
    DETERMINING THE RESONANCE PARAMETERS FOR MECHANICAL OSCILLATORS 有权
    确定机械振荡器的共振参数

    公开(公告)号：US20100324852A1

    公开(公告)日：2010-12-23

    申请号：US12792500

    申请日：2010-06-02

    申请人： H. Alan Wolf ,  Chung-Min Cheng ,  George Akehurst ,  Yvonne Mathez ,  Dalia G. Yablon ,  Alan M. Schilowitz ,  Manuel S. Alvarez

    发明人： H. Alan Wolf ,  Chung-Min Cheng ,  George Akehurst ,  Yvonne Mathez ,  Dalia G. Yablon ,  Alan M. Schilowitz ,  Manuel S. Alvarez

    IPC分类号： G01D18/00

    CPC分类号： G01D1/00 ,  G01D15/00 ,  G01H13/00 ,  G01N17/04 ,  G01N29/46

    摘要： The prior art describes the application of mechanical oscillators for the measurement of corrosion and/or deposition. Mechanical oscillators employ the use of resonance parameters, frequency and the quality factor Q, for the measurement of corrosion or deposition. However, the prior art does not consider the required precision for measuring frequency or Q in the presence of noise to make these measurements. In particular, the ability of the mechanical oscillator to measure small amounts of metal loss or deposition is not only dependent upon the mechanical design but is limited by the precision in determining the resonance frequency and Q. The present invention discloses methods for measuring these resonance parameters with a high precision in the presence of noise. This degree of precision is required to maximize the utility of these devices as sensitive probes for corrosion and deposition (fouling) measurement. All of the embodiments described herein employ curve fitting consistent with modeling the mechanical oscillator as a simple harmonic oscillator. This curve fitting procedure, combined with averaging and utilizing signal processing parameters to mitigate noise effects, adds considerable precision in measuring resonance parameters.

    摘要翻译： 现有技术描述了用于测量腐蚀和/或沉积的机械振荡器的应用。 机械振荡器采用谐振参数，频率和质量因子Q来测量腐蚀或沉积。 然而，现有技术不考虑在存在噪声的情况下测量频率或Q的所需精度以进行这些测量。 特别地，机械振荡器测量少量金属损失或沉积的能力不仅取决于机械设计，而且受到确定共振频率和Q的精度的限制。本发明公开了用于测量这些谐振参数的方法 在噪声的存在下具有高精度。 需要这种精度来最大限度地利用这些装置作为腐蚀和沉积（污垢）测量的敏感探头。 本文所述的所有实施例都使用与将机械振荡器建模为简单谐波振荡器一致的曲线拟合。 该曲线拟合程序，结合平均和利用信号处理参数来减轻噪声影响，增加了测量共振参数的相当大的精度。