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    • 2. 发明申请
    • VORRICHTUNG UND VERFAHREN ZUR ÜBERWACHUNG EINES OBJEKTES IN EINEM EXPLOSIONSGESCHÜTZTEN BEREICH MITTELS ULTRASCHALL
    • 装置和用于监控对象发生爆炸保护区借助超声波
    • WO2015024646A1
    • 2015-02-26
    • PCT/EP2014/002244
    • 2014-08-14
    • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    • SCHUBERT, LarsKLESSE, ThomasRÖDER, OlafFRANKENSTEIN, Bernd
    • G01N29/22
    • G01N29/14G01N29/227
    • Die vorliegende Erfindung betrifft eine Vorrichtung sowie ein Verfahren zur Überwachung eines Objektes (1) in einem explosionsgeschützten Bereich mittels Ultraschall. Die Vorrichtung weist wenigstens einen Ultraschallwandler (5), einen mit dem Ultraschallwandler (5) akustisch gekoppelten Schallwellenleiter (3) und eine Sende- und Empfangselektronik (7) zum Aussenden und zum Empfang von Ultraschallwellen über den Ultraschallwandler (5) in einem explosionsgeschützten Gehäuse (6) auf. Die Sende- und Empfangselektronik (7) verfügt dabei über einen Energiespeicher und eine mit dem Energiespeicher verbundene Verstärkerschaltung, durch die von außen übertragene Ansteuer- Signale für den Ultraschallwandler (5) so verstärkt werden können, dass für eine Überwachung ausreichend starke Ultraschallsignale erzeugt werden können. Die Ultraschallsignale werden über den Schallwellenleiter (3) durch eine explosionsgeschützte Durchführung (4') im Gehäuse (6) nach außen geführt und in das Objekt (1) eingekoppelt. Mit der vorgeschlagenen Vorrichtung und dem zugehörigen Verfahren ist es ohne Verletzung der Sicherheitsbestimmungen möglich, Objekte in explosionsgeschützten Bereichen mittels Ultraschallprüfung ohne einen Stillstand der zugehörigen Anlage oder ein Entleeren der Objekte kontinuierlich zu überwachen.
    • 本发明涉及一种装置和用于通过超声波的装置在一个防爆区域监视的对象(1)的方法。 该装置包括至少一个超声换能器(5),一个与所述超声换能器(5)声学耦合声波导(3)和发射和接收电子设备(7),用于通过超声换能器(5)(在防爆壳体发射和接收超声波 6)。 发送和接收电子设备(7)在这种情况下有一个能量存储器和装置通过用于超声波换能器所发送的外部的致动信号连接到所述能量存储放大器电路(5),从而可以增强,即足够强的超声波信号可用于监视来生成 , 超声波信号由在壳体中的防爆衬套(4“)引导越过所述声波导(3)(6)从外部并耦合到所述对象(1)。 所提出的装置和相关的方法,可以在不违反安全的监视在危险区域的对象,通过超声波探伤的装置连续地而不对象的相关联的植物或排空的关闭。
    • 3. 发明申请
    • SYSTEM AND DEVICE FOR ACOUSTIC MEASURING IN A MEDIUM
    • 用于中等声学测量的系统和装置
    • WO2012178013A3
    • 2013-02-14
    • PCT/US2012043755
    • 2012-06-22
    • MOLZ ERICLAUTZENHISER FRANSDALLAS JAMES MPIEZOTECH LLC
    • MOLZ ERICLAUTZENHISER FRANSDALLAS JAMES M
    • G01V1/40G01V1/44
    • G01N29/07E21B47/101G01N29/024G01N29/222G01N29/227G01N29/265G01N29/4427G01N33/2823G01N2291/056G01V1/40
    • A device for acoustic measuring in a medium in a borehole such as velocity of sound in the medium or velocity of the medium, includes at least a first acoustic array situated in a first, slanted sidewall of a measuring area and operating to emit a series of acoustic waveforms across a measuring area. In one form, the device includes a second acoustic array situated in a second, slanted sidewall of the measuring area and operating to receive an acoustic signal resulting from the emitted series of acoustic waveforms or to receive said acoustic signal and emit a second series of acoustic waveforms. A the processor measures a time between when a predefined portion of one of the series of acoustic waveforms was emitted and when a predefined portion of the received acoustic signal corresponding to the predefined portion of one of the series of acoustic waveforms is received by the acoustic receiver, and correlates the measured time to a reference time, then outputs a correlation factor for determining the velocity of sound in the medium in the measuring area. The processor may also calculate transit time for the two emitted acoustic signals or echoes from the first emitted acoustic signals to determine medium flow velocity.
    • 用于在钻孔中的介质中的声学测量的装置,例如介质中的声速或介质的速度,包括位于测量区域的第一倾斜侧壁中的至少第一声阵列,并且操作以发射一系列 测量区域的声波形。 在一种形式中,该装置包括位于测量区域的第二倾斜侧壁中的第二声阵列,并且操作以接收由所发射的一系列声波形成的声信号或接收所述声信号并发射第二系列声 波形。 处理器测量在发出一系列声波形的预定义部分之间的时间,并且当与声波接收器中的一个声波形中的一个之一的预定义部分相对应的接收到的声信号的预定义部分被声接收器 并将测量的时间与参考时间相关联,然后输出用于确定测量区域中的介质中的声速的相关因子。 处理器还可以计算来自第一发射声信号的两个发射的声信号或回波的传播时间,以确定介质流速。
    • 5. 发明申请
    • LOADING DEVICE FOR NON-DESTRUCTIVE INSPECTIONS OF COMPOSITE STRUCTURES
    • 用于非破坏性复合结构检查的装载装置
    • WO2005057204A1
    • 2005-06-23
    • PCT/US2004/033734
    • 2004-10-13
    • THE BOEING COMPANYROE, Richard, D.SHAEFFER, Clifford, F.
    • ROE, Richard, D.SHAEFFER, Clifford, F.
    • G01N29/22
    • G01N29/227G01N3/08G01N2291/0231G01N2291/02854G01N2291/0422
    • There is provided a loading device for applying a load to a composite structure during a non-destructive inspection. The loading device comprises a load indicator to indicate the load applied, which is preferably a normal load, and comprises a connector attached to the load indicator to connect the loading device to a surface of the structure. A support contacts the structure to support the load indicator and the connector. The support preferably comprises a plate and three legs, wherein the load indicator is attached to the plate and the legs contact the structure. The legs may comprise protective ends for contacting the structure and may define adjustable lengths. A load applicator in mechanical communication with the connector and the load indicator applies the load to the structure, advantageously by reducing the distance between the connector and load indicator to create the load. The connector may connect to the surface of the structure defining a protrusion or to a protrusion removably adhered to the surface of the structure.
    • 提供了一种用于在非破坏性检查期间将负载施加到复合结构的加载装置。 装载装置包括用于指示施加的负载的负载指示器,其优选地是正常负载,并且包括附接到负载指示器的连接器以将加载装置连接到结构的表面。 支撑件接触结构以支撑负载指示器和连接器。 支撑件优选地包括板和三个腿,其中负载指示器附接到板,并且腿接触结构。 腿可以包括用于接触结构的保护端,并且可以限定可调长度。 与连接器和负载指示器机械连通的负载施加器将负载施加到结构,有利地通过减小连接器和负载指示器之间的距离来产生负载。 连接器可以连接到限定突起的结构的表面或可移除地粘附到结构的表面的突起。
    • 8. 发明申请
    • TESTING OF LEATHER
    • 皮革测试
    • WO02003059A1
    • 2002-01-10
    • PCT/GB2001/002905
    • 2001-06-29
    • G01N29/14G01N29/22G01N29/42G01N33/44
    • G01N29/42G01N29/14G01N29/223G01N29/227G01N33/447G01N2291/015G01N2291/0237G01N2291/101G01N2291/106G01N2291/2632
    • The present invention relates to the testing of leather, in particular the testing of leather for grain surface cracking. Leather is tested for its strength and grain distension in order to determine its suitability for a particular use, such as shoe manufacture. There is described a method for the determination of physical characteristics of a leather sample (10), the method including the steps of applying a physical procedure to the sample of leather; and monitoring and analysing audible acoustic emissions from the sample. There is also described an apparatus adapted for use in such method comprising means for applying a physical procedure to a sample of leather (10) and an acoustic sensor (12). Typically, the acoustic sensor comprises at least one transducer, such as a microphone, and monitors acoustic emissions in the range of 200 Hz to 22kHz. For certain analyses, the acoustic sensor comprises an annular array comprising a plurality of transducers each mounted equidistantly from the means applying the physical procedure.
    • 皮革的测试技术领域本发明涉及皮革的测试,特别涉及用于纹理表面开裂的皮革的测试。 测试皮革的强度和颗粒膨胀度,以确定其适用于特定用途,如制鞋。 描述了一种用于测定皮革样品(10)的物理特性的方法,该方法包括以下步骤:将皮肤样品应用于物理过程; 并监测和分析来自样品的声音发射。 还描述了一种适用于这种方法的装置,包括用于对皮革样品(10)和声学传感器(12)施加物理过程的装置。 通常,声学传感器包括至少一个换能器,例如麦克风,并且监测在200Hz至22kHz范围内的声发射。 对于某些分析,声学传感器包括环形阵列,其包括多个换能器,每个换能器均等于从应用物理过程的装置安装。
    • 9. 发明申请
    • POWER SPECTRAL STRAIN ESTIMATORS IN ELASTOGRAPHY
    • 功能光谱应变估计器在ELASTOGRAPHY
    • WO0171366A2
    • 2001-09-27
    • PCT/US0108538
    • 2001-03-16
    • UNIV TEXAS
    • OPHIR JONATHANKONOFAGOU ELISA
    • G01N29/12G01N29/22G01N29/42G01N29/46G01N29/50G01S15/89G01R
    • A61B8/485G01N29/12G01N29/227G01N29/42G01N29/449G01N29/46G01N29/50G01N2291/012G01S7/52042G01S15/8977
    • Elastography can produce quality strain images in vitro and in vivo. Standard elastography uses a coherent cross-correlation technique to estimate tissue displacement and tissue strain using a subsequent gradient operator. While coherent estimation methods generally have the advantage of being highly accurate and precise, even relatively small undesired motions are likely to cause enough signal decorrelation to produce significant degradation of the elastogram. For elastography to become more universally practical in such applications as hand-held, intravascular and abdominal imaging, the limitations associated with coherent strain estimation methods that require tissue and system stability, must be overcome. In this paper, we propose the use of a spectral shift method that uses a centroid shift estimate (Fig. 5) to measure local strain directly. Furthermore, we also show theoretically that a spectral bandwidth method can also provide a direct strain estimation. We demonstrate that strain estimation using the spectral shift technique is moderately less precise but far more robust than the cross-correlation method. A theoretical analysis as well as simulations and experimental results are used to illustrate the properties associated with this method.
    • 弹性成像可以在体外和体内产生质量应变图像。 标准弹性成像使用相干互相关技术来使用随后的梯度算子来估计组织位移和组织应变。 虽然相干估计方法通常具有高度准确和精确的优点,但是即使相对较小的不期望的运动也可能导致足够的信号去相关以产生弹性图的显着降级。 对于弹性成像在手持式,血管内和腹部成像等应用中变得更普遍实用,必须克服与需要组织和系统稳定性的相干应变估计方法相关的限制。 在本文中,我们提出使用使用质心位移估计(图5)的频谱偏移方法直接测量局部应变。 此外,我们还在理论上展示了光谱带宽方法还可以提供直接应变估计。 我们证明使用光谱变换技术的应变估计中度不太精确,但是比互相关方法强得多。 使用理论分析以及模拟和实验结果来说明与该方法相关的属性。
    • 10. 发明申请
    • SYSTEM AND METHOD FOR TESTING THE INTEGRITY OF POROUS ELEMENTS
    • 用于测试多孔元素完整性的系统和方法
    • WO1994011721A1
    • 1994-05-26
    • PCT/US1993010691
    • 1993-11-08
    • PALL CORPORATIONHOPKINS, Scott, D.SPENCER, Daniel, W.LIPARI, Charles, P.ALTEMOSE, George, A.
    • PALL CORPORATION
    • G01N15/08
    • B01D65/102B01D65/104G01M3/24G01N15/0826G01N29/14G01N29/227G01N29/449G01N2291/02441G01N2291/0245G01N2291/02836G01N2291/02872G01N2291/02881
    • An ultrasonic detection apparatus (1) is disclosed for detecting defects in filters (3). The apparatus (1) operates on a wetted filter (3) and includes a housing (2). The wetted filter (3) divides the housing (2) into an inlet side (7) and an outlet side (8). Both the inlet side (7) and the outlet side (8) may be filled with a gas as with a standard forward flow test apparatus. A microphone (4) is disposed in the vicinity of the wetted filter (3). The microphone (4) receives acoustic signals generated within the chamber (any combination of inlet side (7), outlet side (8), inlet tube (5), or outlet tube (6)) as a result of the increased pressure on the inlet side (7). A signal processing device (9) is also included for analyzing the acoustic signals received by the microphone (4) for determining whether a filter (3) is defective. The invention includes multiple methods for determining whether a filter (3) is defective. One method may include the steps of placing a wetted filter (3) in a test housing (2) to divide the test housing (2) into an inlet side (7) and an outlet side (8), pressurizing the inlet side (7) with gas, measuring both the gas flow and the sound volume on the outlet side (8), and thereby determine whether the filter (3) is defective.
    • 公开了一种用于检测过滤器(3)中的缺陷的超声波检测装置(1)。 装置(1)在润湿过滤器(3)上操作并且包括壳体(2)。 润湿过滤器(3)将壳体(2)分成入口侧(7)和出口侧(8)。 入口侧(7)和出口侧(8)都可以用标准的前向流动试验装置填充气体。 麦克风(4)设置在湿滤器(3)附近。 麦克风(4)由于压力增加而接收在室内产生的声信号(入口侧(7),出口侧(8),入口管(5)或出口管(6)的任何组合) 入口侧(7)。 还包括信号处理装置(9),用于分析由麦克风(4)接收的用于确定滤波器(3)是否有缺陷的声信号。 本发明包括用于确定过滤器(3)是否有缺陷的多种方法。 一种方法可以包括以下步骤:将湿过滤器(3)放置在测试壳体(2)中以将测试壳体(2)分成入口侧(7)和出口侧(8),对入口侧(7 ),测量出口侧(8)上的气流和音量,从而确定过滤器(3)是否有缺陷。