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    • 61. 发明专利
    • Division type ultrasonic probe transmitting/receiving circuit
    • 分类型超声波探头发射/接收电路
    • JPS6196459A
    • 1986-05-15
    • JP21881284
    • 1984-10-17
    • Kawasaki Steel CorpKawatetsu Keiryoki Kk
    • OGATA TAKAHARUMARUYAMA AKIHIROOKAMOTO YASUSHI
    • G01S7/52G01B17/02G01N29/04G01N29/38
    • G01N29/38G01N2291/02854
    • PURPOSE:To detect a flaw immediately under the surface of a material to be tested highly accurately by outputting pulses from a control circuit for a fixed period synchronously with timing for exciting a transmission side oscillator and turning on a switching means by pulses. CONSTITUTION:An one-shot circuit 32 is provided with an FF35, a capacitor 33 for setting up pulse width by changing a time constant and a resistor 34. The waveform of an output signal from the circuit 32 is set up to the high level during about 2-5muS synchronously with the timing for exciting the transmission side oscillator 5, and during the high level of the output signal, the collector and emitter of a transistor (TR) are shorted. Even if an induced electric pulse is excited on the side of a transmission side oscillation 6 during the short, the electric pulse applied to the oscillator 6 is less than about 0.1V which is the saturation voltage of the TR31. Therefore, a wave reflected from the front surface of a delay material 4 is prevented from being mixed with a wave reflected from a defect or the back of the material 21 to be tested, so that a flaw immediately under the surface of the material 21 and the thickness of an extremely thin plate can be measured.
    • 目的:通过与激励发送侧振荡器的定时同步地输出来自控制电路的脉冲一段固定周期的脉冲,通过脉冲接通开关装置,来高精度地检测待测试材料表面下方的缺陷。 构成:单触发电路32设置有FF35,用于通过改变时间常数来设置脉冲宽度的电容器33和电阻器34.来自电路32的输出信号的波形被设置为高电平 与激发发送侧振荡器5的定时同步约2-5mS,并且在输出信号的高电平期间,晶体管(TR)的集电极和发射极短路。 即使在短路期间在发送侧振荡6的一侧激励感应电脉冲,施加到振荡器6的电脉冲小于作为TR31的饱和电压的约0.1V。 因此,防止从延迟材料4的前表面反射的波与从被测材料21的缺陷或背面反射的波混合,使得紧邻材料21的表面下方的缺陷和 可以测量极薄板的厚度。
    • 63. 发明专利
    • Method and device for detecting defect by ultrasonic wave method
    • 通过超声波方法检测缺陷的方法和装置
    • JPS5917154A
    • 1984-01-28
    • JP12718482
    • 1982-07-20
    • Kobe Steel Ltd
    • SUZUKI AKIOKAJIKAWA HIROSHINISHIHARA TADASHI
    • G01N29/04G01N29/06G01N29/11G01N29/22G01N29/265G01N29/38G01N29/44
    • G01N29/0618G01N29/11G01N29/225G01N29/265G01N29/38G01N29/4445G01N2291/044
    • PURPOSE:To discriminate a defect accurately in the direction, inclination, size, and depth, by transmitting and receiving an ultrasonic wave beam which crosses the center of rotation in a flaw detection area in a material to be inspected, and finding the correlation between a flaw detection pattern and a preset reference pattern. CONSTITUTION:A probe rotating mechanism 7 is scanned by a scanning mechanism 23 in an X-axis and a Y-axis direction, and the scanning mechanism 23 is cotrolled by a controller 24. Pulser receivers 25-28 are provided corresponding to probes 14'17 of four channels CH1-CH4. While the probe rotating mechanism 17 is rotated, ultrasonic wave beams 14a-17a are transmitted to the material 2 to be inspected by the probes 14-17 during flaw detection, and then a reflection echo from the defect 3 in the material 2 to be inspected is received by the pulser receivers 25-28 through the probes 14-17; and analog peak holding circuits 29-32 hold the peak values of signals generated at flaw detection gates 14b- 17b, and 128 flaw detection patterns of every 360 deg./128 from the incidence direction are stored through A/D converters 33-36 and shift registers 37-40 to generate a flaw detection pattern.
    • 目的:通过发射和接收穿过待检查材料的探伤区域中的旋转中心的超声波束,在方向,倾斜度,大小和深度上准确地区分缺陷,并找到a 探伤模式和预设参考模式。 构成:扫描机构23在X轴方向和Y轴方向上扫描探头旋转机构7,扫描机构23由控制器24进行托架。对应于探针14'设置脉冲接收器25-28, 17个四通道CH1-CH4。 当探针旋转机构17旋转时,超声波波束14a-17a在缺陷检测期间被传感器14-17传送到要检查的材料2,然后从要检查的材料2中的缺陷3反射回波 由脉冲发生器25-28通过探头14-17接收; 并且模拟峰值保持电路29-32保持在探伤门14b-17b处产生的信号的峰值,并且通过A / D转换器33-36存储来自入射方向的每360度/ 128度的128个探伤模式, 移位寄存器37-40以产生探伤模式。
    • 64. 发明专利
    • Ultrasonic flaw detecting apparatus
    • 超声波检测装置
    • JPS593254A
    • 1984-01-09
    • JP11075982
    • 1982-06-29
    • Hitachi Eng Co LtdHitachi Ltd
    • NAITOU SHIYOUICHIYAMAMOTO ITSUOKAKINUMA YUKIONARUSE AKISUKENUNOME MASARU
    • G01N29/38
    • G01N29/38
    • PURPOSE:To carry out the positional evaluation of a reflector accurately and easily, by storing the thickness of an object to be inspected, the position where said thickness is present and tolerant distance length (available beam distance length) of reflected echo in buffer memory. CONSTITUTION:Buffer memory 15 is constituted so as to store the output and the ultrasonic refractive angle theta of a digitization circuit 14 and a position detector 13, the transmission speed V of ultrasonic beams and lift gate information Sz corresponding to the thickness of an object to be inspected. On the other hand, a processor 16 is constituted so as to selectively take in the data stored in the buffer memory 15 to carry out the automatic estimation of the position of a reflector and the automatic setting of a gate range. By this mechanism, the positional calculation of the reflector and the evaluation of the size thereof can be carried out accurately and easily.
    • 目的:通过存储待检查对象的厚度,存在所述厚度的位置和反射回波的宽度距离长度(可用光束距离长度)来缓冲存储器中的反射回波的准确和容易的位置评估。 构成:缓冲存储器15构成为将数字化电路14和位置检测器13的输出和超声波折射角θ,超声波束的传输速度V和对应于物体的厚度的升降门信息Sz存储到 被检查。 另一方面,处理器16被构造成选择性地取入存储在缓冲存储器15中的数据,以进行反射器的位置的自动估计和栅极范围的自动设定。 通过该机构,可以准确且容易地进行反射体的位置计算和其尺寸的评价。
    • 66. 发明专利
    • Apparatus for nondestructive test for ductile cast iron
    • 用于陶瓷铸铁的非破坏性试验的装置
    • JPS5722553A
    • 1982-02-05
    • JP9651280
    • 1980-07-15
    • Toshiba Corp
    • SEGUCHI TATSUO
    • G01N29/04G01N29/07G01N29/11G01N29/38G01N29/44
    • G01N29/4445G01N29/0645G01N29/07G01N29/11G01N29/38G01N2291/02854G01N2291/0289G01N2291/044
    • PURPOSE:To detect the part with abnormal quality accurately and quickly by obtaining the average value of ultrasonic echoes over the entire scanning range of the ductile cast iron, and obtaining total value of the differences between the echo at each scanning point and the average value. CONSTITUTION:A probe 5 sends a pulse generated in a pulse generator 4 which is controlled by a synchronizing signal generator 3. Echoes B1 and B2 are generated from the bottom and upper surfaces of the ductile cast iron to be checked 14. Said echo outputs are displayed on an A scope displaye 9 via an amplifier 6. The timing of said echo outputs and received signals is taken in an echo gate circuit 10. The results are selected in a threshold circuit 11 and inputted to an operation circuit 11 via a waveforming circuit 12 and a counter 13. The average of the values of the probe 5 over the entire scanning range is obtained and the total value of the differences between the output of each point and the average value is displayed 18. Thus, the detection of the part having abnormal quality is performed accurately and quickly.
    • 目的:通过在球墨铸铁的整个扫描范围内获得超声波回波的平均值,准确快速地检测异常质量的部位,并获得每个扫描点的回波与平均值之间的差异总值。 构成:探头5发送脉冲发生器4中产生的脉冲,该脉冲由同步信号发生器3控制。回波B1和B2是从待检查的球墨铸铁的底表面和上表面产生的。所述回波输出 通过放大器6显示在A示波器9上。所述回波输出和接收信号的定时在回波门电路10中获取。结果在阈值电路11中选择,并通过波形电路输入到运算电路11 12和计数器13.获得探头5在整个扫描范围上的值的平均值,并且显示每个点的输出与平均值之间的差的总和值18.因此,检测部件 正确,快速地执行异常质量。
    • 69. 发明专利
    • Surface acoustic wave sensor
    • 表面声波传感器
    • JP2013029367A
    • 2013-02-07
    • JP2011164507
    • 2011-07-27
    • Denso Corp株式会社デンソー
    • YAMADA HIDEAKIKANO KAZUHIKO
    • G01B17/04G01D5/48G01K7/32
    • H01L41/1132G01N29/2462G01N29/38G01N29/42G01N2291/0423H03H9/02622H03H9/058H03H9/0585
    • PROBLEM TO BE SOLVED: To provide a SAW sensor capable of measuring both of distortion and temperature by one SAW device.SOLUTION: A SAW device 1 is arranged on one surface 201 of a measurement object 20, and structured so that an area 102a which is located right under a propagation path 13 of a substrate lower surface 102 of the SAW device 1 is fixed to the measurement object 20, and areas 102b, 102c which are located right under a drive electrode 11 and a reflector 12 of the substrate lower surface 102 are not fixed to the measurement object 20. In this structure, when distortion is generated in the measurement object, the distortion is generated only on the propagation path 13 on a substrate upper surface, and phase variation is generated in surface acoustic waves reflected by the reflector 12. Since the phase variation at this time is hardly affected by temperature variation, the distortion of the measurement object can be measured from the phase variation. In addition, in this structure, since a resonance frequency of the SAW device 1 varies due to the temperature variation, and is not affected by the distortion of the measurement object, temperature can be measured from variation of the resonance frequency.
    • 要解决的问题:提供一种能够通过一个SAW器件测量失真和温度两者的SAW传感器。 解决方案:SAW器件1布置在测量对象20的一个表面201上,并且构造成使得位于SAW器件1的衬底下表面102的传播路径13正下方的区域102a被固定 并且位于驱动电极11正下方的基板下表面102的反射体12的区域102b,102c不固定在测量对象20上。在该结构中,当在测量中产生失真时 目的是仅在基板上表面的传播路径13上产生失真,并且由反射器12反射的表面声波产生相位变化。由于此时的相位变化几乎不受温度变化的影响,因此, 可以从相位变化来测量测量对象。 此外,在该结构中,由于SAW器件1的谐振频率由于温度变化而变化,并且不受测量对象的变形的影响,因此可以根据谐振频率的变化来测量温度。 版权所有(C)2013,JPO&INPIT