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1. 发明授权

US5311764A Rebound hammer 失效
标题翻译：反弹锤
公开(公告)号：US5311764A
公开(公告)日：1994-05-17
申请号：US94662
申请日：1993-07-19
申请人： Anthony Smith , Dan Goff , Roman Kruchowy , Carl Rhoads
发明人： Anthony Smith , Dan Goff , Roman Kruchowy , Carl Rhoads
IPC分类号： G01M7/08 , G01N3/00 , G01N3/02 , G01N3/52 , G01N33/38 , G01L5/00
CPC分类号： G01N3/52 , G01M7/08 , G01N2203/0085 , G01N2203/021 , G01N33/383
摘要： A measuring apparatus which detects defects in underwater concrete structs by measuring the compressive strength of the structure. The measuring apparatus comprises a rebound hammer which has extending from the nose thereof a plunger. The plunger is pressed against the structure whose compressive strength is being measured forcing the plunger into the rebound hammer's housing which releases a spring driven mass. A resistive film strip which is in electrical contact with the mass detects the maximum rebound of the mass and provides an electrical signal indicative of this maximum rebound. A data acquisition and processing circuit comprising a microprocessor and signal conditioning electronics receives, processes and stores the electrical signals provided by the resistive strip. This circuit includes a peak detection circuit which captures the peak output signal from the resistive strip. The peak detection circuit then interrupts the microprocessor and sends an analog signal proportional to the maximum rebound of the mass to an analog to digital converter which converts the analog signal to a digital data for processing by the microprocessor. The microprocessor then calculates the compressive strength of the underwater concrete structure under test.
摘要翻译：一种通过测量结构的抗压强度来检测水下混凝土结构中的缺陷的测量装置。测量装置包括从其鼻部延伸的柱塞的回弹锤。柱塞被压靠在其抗压强度被测量的结构上，迫使柱塞进入回弹锤的外壳，释放弹簧驱动的质量。与质量电接触的电阻膜条检测到质量的最大反弹并提供指示该最大回弹的电信号。包括微处理器和信号调理电路的数据采集和处理电路接收，处理和存储由电阻带提供的电信号。该电路包括峰值检测电路，其捕获来自电阻条的峰值输出信号。然后，峰值检测电路中断微处理器，并将与质量最大回弹成比例的模拟信号发送到模拟数字转换器，模数转换器将模拟信号转换为数字数据，以供微处理器处理。然后微处理器计算被测水下混凝土结构的抗压强度。

2. 发明授权

US5339691A Ultrasonic test system 失效
标题翻译：超声波测试系统
公开(公告)号：US5339691A
公开(公告)日：1994-08-23
申请号：US138042
申请日：1993-10-13
申请人： Anthony Smith , Dan Goff , Roman Kruchowy , Carl Rhoads
发明人： Anthony Smith , Dan Goff , Roman Kruchowy , Carl Rhoads
IPC分类号： G01H5/00 , G01N29/18
CPC分类号： G01H5/00
摘要： An ultrasonic system for determining the quality of concrete under water hout inaccuracies caused by electromagnetic interference from the ultrasonic generator. An ultrasonic generator applies pulses to the concrete. An ultrasonic detector detects the ultrasonic pulses and produces corresponding signals that are indicative of ultrasonic pulses that have passed through the material. Signal processing circuitry processes the signals to determine the transit time of the ultrasonic pulses through the material. The signal processing circuitry is disabled for a predetermined time after application of each ultrasonic pulse to the material to prevent noise produced by the means for applying ultrasonic pulses to the material from entering the signal processing circuitry and causing spurious measurements.
摘要翻译：一种用于确定水下混凝土质量的超声波系统，而不是由超声波发生器的电磁干扰引起的误差。超声波发生器对混凝土施加脉冲。超声波检测器检测超声脉冲并产生指示已通过材料的超声脉冲的对应信号。信号处理电路处理信号以确定超声脉冲通过材料的传播时间。在将每个超声波脉冲施加到材料之后，信号处理电路被禁用预定时间，以防止由用于对材料施加超声波脉冲的装置进入信号处理电路并引起杂散测量的装置产生的噪声。

3. 发明授权

US5339023A Nondestructive testing apparatus for determining the orientation of reinforcing bars within a concrete structure 失效
标题翻译：用于确定混凝土结构内钢筋方位的无损检测装置
公开(公告)号：US5339023A
公开(公告)日：1994-08-16
申请号：US991939
申请日：1992-12-17
申请人： Roman Kruchowy , Dan Goff , Anthony Smith
发明人： Roman Kruchowy , Dan Goff , Anthony Smith
IPC分类号： G01B7/00 , G01B7/31 , G01V3/15 , G01B7/10 , G01B7/14 , G01B7/26 , G01V3/165
CPC分类号： G01V3/15 , G01B7/00 , G01B7/10 , G01B7/31
摘要： A measuring apparatus which accurately locates reinforcing bars in underwater concrete structures such as piers, retaining walls, easements and the like and measures the amount of concrete covering each reinforcing bar. The measuring apparus comprises a probe which generates a magnetic field and which is moved over the surface of the underwater concrete structure under test. When the poles of the magnetic field are in parallel alignment with and directly over a reinforcing bar within the structure a disturbance occurs in the magnetic field with the magnitude of the disturbance being indicative of the depth of concrete covering the reinforcing bar. An electronics module electrically coupled to the probe provides an analog output signal which is indicative of the distance between a reinforcing bar within the concrete structure under test and the probe. This analog signal is supplied to a meter which provides a visual indication of the location of the reinforcing bar and a microprocessor which then calculates the depth of the reinforcing bar within the concrete sructure.
摘要翻译：一种在水下混凝土结构（如码头，挡土墙，地役权等）中精确定位钢筋的测量装置，并测量每个钢筋的混凝土的数量。测量装置包括产生磁场并在被测水下混凝土结构的表面上移动的探针。当磁场的磁极与结构内的钢筋平行对准并且直接位于结构内的钢筋上时，在磁场中发生扰动，其中扰动的大小表示覆盖钢筋的混凝土的深度。电耦合到探针的电子模块提供模拟输出信号，其指示被测混凝土结构内的钢筋与探头之间的距离。该模拟信号被提供给一个仪表，其提供了钢筋的位置的视觉指示和微处理器，然后微处理器计算混凝土结构内的钢筋的深度。

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