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    • 4. 发明授权
    • Ultrasonic test method and ultrasonic test instrument used for the method
    • 超声波检测方法和超声波检测仪用于该方法
    • US07721606B2
    • 2010-05-25
    • US11667772
    • 2005-11-11
    • Makoto ShiraiHiroshi MiyamotoShigeyuki Matsubara
    • Makoto ShiraiHiroshi MiyamotoShigeyuki Matsubara
    • G01N9/24
    • G01N29/043G01N29/07G01N29/223G01N29/32G01N29/38G01N2291/0231G01N2291/0427G01N2291/044G01N2291/056G01N2291/102G01N2291/2694
    • An ultrasonic test method for detecting a defective portion more precisely in a noncontact reflection way, and ultrasonic test instrument used for the method. An ultrasonic wave is transmitted from a transmitter (20 (21)) provided on one side of an object under test, and the reflected wave is received by a receiver (30 (31)) provided on the same side. The ultrasonic wave is transmitted/received through an air layer between the transmitter and the object (100) under test and between the receiver and the object (100). The relative positions of the transmitter (20), the receiver (30), and the object (100) are so determined that the air propagation time ta of the air path (RA) between the transmitter and the receiver is longer than the propagation time tb of the reflected wave in the reflection path (RB). The propagation of the ultrasonic wave through the solid body between the transmitter and the receiver is blocked. This invention is suitable to test laminated material (100) such as a laminate of CFRP (101) and insulation (102) in a noncontact way.
    • 一种用于以非接触反射方式更准确地检测缺陷部分的超声波测试方法,以及用于该方法的超声波测试仪器。 从设置在被测物体的一侧的发送器(20(21))发送超声波,反射波由设置在同一侧的接收器(30(31))接收。 超声波通过发射机与待测物体(100)之间的空气层和接收器与物体(100)之间的空气层进行传送/接收。 如此确定发射器(20),接收器(30)和物体(100)的相对位置,使得发射器和接收器之间的空气路径(RA)的空气传播时间ta比传播时间长 反射波(RB)中的反射波的tb。 超声波在发射机和接收机之间通过固体的传播被阻断。 本发明适合以非接触方式测试诸如CFRP(101)和绝缘体(102)的层压材料的层压材料(100)。
    • 7. 发明授权
    • Sealing structure of gas sensor
    • 气体传感器密封结构
    • US06673224B2
    • 2004-01-06
    • US09877126
    • 2001-06-11
    • Makoto Shirai
    • Makoto Shirai
    • G01N27407
    • C03C8/24C03C3/066G01N27/4077
    • An improved structure of a mechanical seal for keeping a gas chamber and a reference gas chamber airtight in a sensor body. A sensor element is disposed within an insulator. A gap between the sensor element and the insulator is sealed hermetically by a glass sealing member. The glass sealing member has a coefficient of thermal expansion whose differences between itself and the sensor element and the insulator is within a range of ±3×10−6/° C. This provides a mechanical seal required to keep the reference gas chamber and the gas chamber in the gas sensor airtight in an environment such as an automotive exhaust system subjected to a great temperature change.
    • 用于将气室和参考气室气密地保持在传感器主体中的机械密封件的改进的结构。 传感器元件设置在绝缘体内。 传感器元件和绝缘体之间的间隙由玻璃密封构件气密密封。 玻璃密封件具有热膨胀系数,其自身与传感器元件和绝缘体之间的差异在±3×10 -6 /℃的范围内。这提供了保持参考气室和 气体传感器中的气室在诸如经受大的温度变化的汽车排气系统的环境中气密。
    • 8. 发明授权
    • Sealing structure of gas sensor
    • 气体传感器密封结构
    • US06623612B2
    • 2003-09-23
    • US09877205
    • 2001-06-11
    • Makoto Shirai
    • Makoto Shirai
    • G01N27407
    • G01N27/4077
    • An improved structure of a mechanical seal for keeping a gas chamber and a reference gas chamber airtight in a sensor body. A packing seal is disposed between a shoulder formed on an inner wall of a housing of the sensor body and a tapered surface of an insulation porcelain installed in the housing to define the gas chamber and the reference gas chamber hermetically. The packing ring is formed by a metal plate which has a thickness of 0.1 mm or more and a Vickers hardness of 200 or less and which is made of at least one of a nickel, a nickel alloy, a titanium, and a stainless steel.
    • 用于将气室和参考气室气密地保持在传感器主体中的机械密封件的改进的结构。 包装密封件设置在形成在传感器主体的壳体的内壁上的肩部和安装在壳体中的绝缘瓷的锥形表面之间,以密封地限定气体室和参考气体室。 填料环由厚度为0.1mm以上,维氏硬度为200以下的金属板形成,并由镍,镍合金,钛,不锈钢中的至少一种构成。