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    • 88. 发明授权
    • Non-destructive testing device for testing a welded region of a workpiece
    • 用于测试工件焊接区域的无损检测装置
    • US09541526B2
    • 2017-01-10
    • US14110768
    • 2012-04-05
    • Toshihiko KubotaOsamu KawanabeTakashi KimuraAtsushi Okuda
    • Toshihiko KubotaOsamu KawanabeTakashi KimuraAtsushi Okuda
    • G01N27/72G01B7/12G01N27/90G01B7/00
    • G01N27/72G01B7/003G01B7/12G01N27/902
    • The device has a processor (20) that applies a magnetic field to a measurement subject (2) and after the magnetic field is discontinued, uses an induced electromotive force detector (17) to measure the magnetic fluxes emitted from multiple locations, calculates time constants of transient change of the plurality of magnetic fluxes, and detects the internal structure of the measurement subject (2) from the distribution of the time constants. The processor (20) prompts the induced electromotive force detector (17) to make first measurements at predetermined locations, prompts the induced electromotive force detector (17) to make second measurements at locations rotated by a predetermined angle from the predetermined locations, and based on the internal structure detected by the first measurements and the internal structure detected by the second measurements, estimates the center location of the nugget and/or the diameter of the nugget which has been formed inside the measurement subject (2).
    • 该装置具有向测量对象(2)施加磁场的处理器(20),并且在磁场中断之后,使用感应电动势检测器(17)来测量从多个位置发射的磁通量,计算时间常数 的多个磁通的瞬时变化,并且从时间常数的分布检测测量对象(2)的内部结构。 处理器(20)提示感应电动势检测器(17)在预定位置进行第一次测量,提示感应电动势检测器(17)在从预定位置旋转预定角度的位置进行第二次测量,并且基于 通过第一测量检测到的内部结构和由第二测量检测到的内部结构,估计了在测量对象(2)内形成的熔核的中心位置和/或熔核的直径。
    • 90. 发明授权
    • Generator retaining ring and other component thermal degradation evaluation by eddy current non-destructive examination
    • 发电机保持环等组分热降解评估通过涡流无损检测
    • US09488618B2
    • 2016-11-08
    • US14071707
    • 2013-11-05
    • SIEMENS ENERGY, INC.
    • Kalyan KannanKevin P. BaileyNeil L. Kilpatrick
    • B65D5/50H02N2/00G01B17/02G01N27/90H02K15/00
    • G01N27/90H02K15/00
    • Eddy current non-destructive examination and evaluation of physical properties of a component, such as a generator retaining ring, after experiencing potentially degrading thermal exposure during any stage of manufacture, assembly and service use, is performed to determine whether it is acceptable for service use, requires further modification (e.g., additional heat treatment processing) or whether is permanently unsuitable for service. Eddy current test measurements are correlated with component temperature exposure (e.g., absolute temperature and/or cumulative time-temperature heat absorption) and cumulative alteration of the component physical properties, such as, among others, material yield strength (YS), toughness, and tensile ductility. Using the eddy current test measurements and reference data correlating electrical conductivity with ring material thermal exposure, the component's physical properties are evaluated to determine its serviceability. The testing can be performed in situ in the field, such as for evaluation of generator rings within field serviced generators.
    • 执行在制造,组装和使用任何阶段中经历潜在降解的热暴露之后的组件的诸如发电机保持环的组件的物理性质的涡流无损检测和评估,以确定是否可接受使用 需要进一步修改(例如,额外的热处理处理)或者是否永久不适合服务。 涡流测试测量与组分温度暴露(例如,绝对温度和/或累积时间 - 热吸收)和组分物理性能的累积变化(例如材料屈服强度(YS)),韧性和 拉伸延性。 使用涡流测试测量和参考数据将电导率与环材料热暴露相关联,评估组件的物理性能以确定其可用性。 该测试可以在现场进行,例如在现场服务发电机内对发电机环进行评估。