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公开(公告)号：US20100019153A1
公开(公告)日：2010-01-28
申请号：US12178173
申请日：2008-07-23
CPC分类号： G01N29/228 , G01N25/72 , G01N29/343
摘要： Acoustic thermography uses a housing configured for thermal, acoustic and infrared radiation shielding. For in-situ applications, the housing has an open side adapted to be sealingly coupled to a surface region of a structure such that an enclosed chamber filled with air is defined. One or more acoustic sources are positioned to direct acoustic waves through the air in the enclosed chamber and towards the surface region. To activate and control each acoustic source, a pulsed signal is applied thereto. An infrared imager focused on the surface region detects a thermal image of the surface region. A data capture device records the thermal image in synchronicity with each pulse of the pulsed signal such that a time series of thermal images is generated. For enhanced sensitivity and/or repeatability, sound and/or vibrations at the surface region can be used in feedback control of the pulsed signal applied to the acoustic sources.
摘要翻译： 声学热成像使用的外壳配置为热，声和红外辐射屏蔽。 对于现场应用，壳体具有适于密封地联接到结构的表面区域的开口侧，使得限定了充满空气的封闭室。 定位一个或多个声源以将声波引导通过封闭室中的空气并朝向表面区域。 为了激活和控制每个声源，向其施加脉冲信号。 聚焦在表面区域的红外成像器检测表面区域的热图像。 数据采集装置与脉冲信号的每个脉冲同步地记录热图像，从而产生时间序列的热图像。 为了提高灵敏度和/或可重复性，表面区域的声音和/或振动可以用于施加到声源的脉冲信号的反馈控制。
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公开(公告)号：US07855368B2
公开(公告)日：2010-12-21
申请号：US12178173
申请日：2008-07-23
IPC分类号： G01J5/02
CPC分类号： G01N29/228 , G01N25/72 , G01N29/343
摘要： Acoustic thermography uses a housing configured for thermal, acoustic and infrared radiation shielding. For in-situ applications, the housing has an open side adapted to be sealingly coupled to a surface region of a structure such that an enclosed chamber filled with air is defined. One or more acoustic sources are positioned to direct acoustic waves through the air in the enclosed chamber and towards the surface region. To activate and control each acoustic source, a pulsed signal is applied thereto. An infrared imager focused on the surface region detects a thermal image of the surface region. A data capture device records the thermal image in synchronicity with each pulse of the pulsed signal such that a time series of thermal images is generated. For enhanced sensitivity and/or repeatability, sound and/or vibrations at the surface region can be used in feedback control of the pulsed signal applied to the acoustic sources.
摘要翻译： 声学热成像使用的外壳配置为热，声和红外辐射屏蔽。 对于现场应用，壳体具有适于密封地联接到结构的表面区域的开口侧，使得限定了充满空气的封闭室。 定位一个或多个声源以将声波引导通过封闭室中的空气并朝向表面区域。 为了激活和控制每个声源，向其施加脉冲信号。 聚焦在表面区域的红外成像器检测表面区域的热图像。 数据采集装置与脉冲信号的每个脉冲同步地记录热图像，从而产生时间序列的热图像。 为了提高灵敏度和/或可重复性，表面区域的声音和/或振动可以用于施加到声源的脉冲信号的反馈控制。
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3.发明授权公开(公告)号：US06712502B2
公开(公告)日：2004-03-30
申请号：US10120225
申请日：2002-04-10
IPC分类号： G01N2572
CPC分类号： G01J5/62 , G01J2005/0077 , G01N25/72
摘要： The invention is a synchronized electronic shutter system (SESS) and method for same side and through transmission thermal analysis and inspection of a material for finding defects, corrosion, disbond defects, integrity of a weld and determination of paint thickness. The system comprises an infrared detector that acquires background images of the sample. A shutter then covers the detector and lamps rapidly heat the sample above ambient temperature. Shutters cover all lamps at the same time the shutter over the infrared detector is opened. The infrared detector acquires a series of temperature images over time radiated from the sample as the sample cools down. After collecting a series of temperature images taken by the SESS, a processed image is developed using one of the group comprising time derivative calculation, temperature normalization data reduction routine, thermal diffusivity curve fitting and averaging the series of temperature images.
摘要翻译： 本发明是同步电子快门系统（SESS）和方法，用于相同侧面和透射热分析和检查用于发现缺陷，腐蚀，剥离缺陷，焊接完整性和油漆厚度确定的材料。 该系统包括获取样本的背景图像的红外检测器。 然后快门覆盖检测器，灯将样品快速加热到环境温度以上。 百叶窗同时覆盖所有灯泡，同时打开红外探测器上的快门。 当样品冷却时，红外检测器从样品中随时间获取一系列温度图像。 在收集SESS拍摄的一系列温度图像后，使用时间导数计算，温度归一化数据缩减程序，热扩散曲线拟合和对一系列温度图像进行平均的组中的一个进行处理。
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公开(公告)号：US5508546A
公开(公告)日：1996-04-16
申请号：US380176
申请日：1995-01-30
CPC分类号： G01J5/34
摘要： A noncontact pyroelectric infrared detector is described. A pyroelectric film that also has piezoelectric properties is held in place so that it is free to vibrate. It is electrically stimulated to vibrate at a resonance frequency. The vibrating film forms part of a balanced bridge circuit. As thermal radiation impinges on the film the pyroelectric effect causes the resonance frequency to change, thereby unbalancing the bridge circuit. A differential amplifier tracks the change in voltage across the bridge. The resulting voltage signal is further processed by a bandpass filter and a precision rectifier. The device allows for DC or static temperature measurements without the use of a mechanical chopping device.
摘要翻译： 描述了非接触式热释电红外探测器。 也具有压电特性的热电膜保持就位，使其自由振动。 电刺激以共振频率振动。 振动膜形成平衡桥式电路的一部分。 当热辐射照射在薄膜上时，热电效应会使谐振频率发生变化，从而使桥接电路失谐。 差分放大器跟踪桥上电压的变化。 所得到的电压信号由带通滤波器和精密整流器进一步处理。 该设备允许直流或静态温度测量，而不需要使用机械斩波装置。
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5.发明授权公开(公告)号：US09354206B2
公开(公告)日：2016-05-31
申请号：US13557250
申请日：2012-07-25
IPC分类号： G01N29/11 , G01N29/04 , G01N29/265 , G01N29/28 , G01N29/44
CPC分类号： G01N29/11 , G01N29/045 , G01N29/265 , G01N29/28 , G01N29/4436
摘要： A method for inspecting a structural sample using ultrasonic energy includes positioning an ultrasonic transducer adjacent to a surface of the sample, and then transmitting ultrasonic energy into the sample. Force pulses are applied to the transducer concurrently with transmission of the ultrasonic energy. A host machine processes ultrasonic return pulses from an ultrasonic pulser/receiver to quantify attenuation of the ultrasonic energy within the sample. The host machine detects a defect in the sample using the quantified level of attenuation. The method may include positioning a dry couplant between an ultrasonic transducer and the surface. A system includes an actuator, an ultrasonic transducer, a dry couplant between the transducer the sample, a scanning device that moves the actuator and transducer, and a measurement system having a pulsed actuator power supply, an ultrasonic pulser/receiver, and a host machine that executes the above method.
摘要翻译： 使用超声能量检查结构样品的方法包括将超声波换能器定位在与样品表面相邻的位置，然后将超声能量传输到样品中。 强制脉冲与超声能量的传输同时施加到传感器。 主机处理来自超声波脉冲发生器/接收器的超声波返回脉冲，以量化样品内的超声波能量的衰减。 主机使用量化的衰减水平来检测样品中的缺陷。 该方法可以包括将干式耦合剂定位在超声换能器和表面之间。 系统包括致动器，超声波换能器，换能器之间的干燥耦合剂，样品，移动致动器和换能器的扫描装置以及具有脉冲致动器电源的测量系统，超声脉冲发生器/接收器和主机 执行上述方法。
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6.发明申请Floating Ultrasonic Transducer Inspection System and Method for Nondestructive Evaluation 有权浮动超声波传感器检测系统及非破坏性评估方法公开(公告)号：US20130030727A1
公开(公告)日：2013-01-31
申请号：US13557250
申请日：2012-07-25
CPC分类号： G01N29/11 , G01N29/045 , G01N29/265 , G01N29/28 , G01N29/4436
摘要： A method for inspecting a structural sample using ultrasonic energy includes positioning an ultrasonic transducer adjacent to a surface of the sample, and then transmitting ultrasonic energy into the sample. Force pulses are applied to the transducer concurrently with transmission of the ultrasonic energy. A host machine processes ultrasonic return pulses from an ultrasonic pulser/receiver to quantify attenuation of the ultrasonic energy within the sample. The host machine detects a defect in the sample using the quantified level of attenuation. The method may include positioning a dry couplant between an ultrasonic transducer and the surface. A system includes an actuator, an ultrasonic transducer, a dry couplant between the transducer the sample, a scanning device that moves the actuator and transducer, and a measurement system having a pulsed actuator power supply, an ultrasonic pulser/receiver, and a host machine that executes the above method.
摘要翻译： 使用超声能量检查结构样品的方法包括将超声波换能器定位在与样品表面相邻的位置，然后将超声能量传输到样品中。 强制脉冲与超声能量的传输同时施加到传感器。 主机处理来自超声波脉冲发生器/接收器的超声波返回脉冲，以量化样品内的超声波能量的衰减。 主机使用量化的衰减水平来检测样品中的缺陷。 该方法可以包括将干式耦合剂定位在超声换能器和表面之间。 系统包括致动器，超声波换能器，换能器之间的干燥耦合剂，样品，移动致动器和换能器的扫描装置以及具有脉冲致动器电源的测量系统，超声脉冲发生器/接收器和主机 执行上述方法。
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