摘要:
A scanner (100) comprises a scanning array (206) mounted within a rotatable assembly (104) having a first wheel (182) on a first side, a second wheel (194) on a second side and a membrane (204) forming a drum around the array (206) wherein a load path (142) is provided between the wheels to divert load from the membrane (204) such that it can be made thinner.
摘要:
There is provided a non-destructive inspection device having an actuating portion and at least one inspecting portion. The inspecting portion(s) are magnetically coupled to the actuating portion so that the inspecting portion(s) may be moved into limited-access areas to inspect features of a structure. The inspecting portion(s) each include at least one inspection sensor that transmits and/or receives signals that, when processed, indicate defects in the features of the structure. The inspection sensor of the inspecting portion is moveable relative to the housing of the inspecting portion to enable inspection of relatively larger areas of the structure being inspected. The inspection sensors may be moved, relative to the housing of the inspecting portion, manually and/or automatically.
摘要:
A system (10) is provided for ultrasonic inspection of cylindrical carbon articles, such as electrodes of the type utilized in electric arc steel making furnaces. An inspection station (18) is provided for receiving the electrode (12) in a fixed longitudinal location and for rotating the electrode about the longitudinal axis of the electrode. Master and slave robots (20, 22) are provided, and each carries a pair of transducers (60, 62) arranged to engage the electrode at circumferentially spaced positions about the electrode. Each pair of transducers is carried on a yoke (50). The inspection station rotates the electrode while the master and slave robots each carry their associated pair of transducers along approximately one half the length of the electrode.
摘要:
A method of detecting a damaged feature within a structure (32) includes embedding a plurality of thin piezoelectric ceramic sensors (26) on the structure (32). A first sensor (34) is excited so that the first sensor (26) produces a responsive signal in the structure (32). The responsive signal is received at a second sensor. The presence or absence in the received responsive signal of at least one predetermined signal characteristic is determined, where the predetermined signal characteristic is related to existence of the damage feature.
摘要:
A system and method of detecting anomalies and/or grain variations in a wooden member. At least one ultrasonic transmitter (401) applies an ultrasound waveform into a surface of a wooden member (100) so as to generate a multiplicity of ultrasonic waves including, e.g., longitudinal and shear waves. These ultrasonic waves are measured after propagation through the wooden member by at least one ultrasonic receiver (402) disposed on the same surface of the wooden member. At least one ultrasonic receiver (501) may also be placed opposite the ultrasonic transmitter (401) so as to detect radial transmission of the longitudinal ultrasonic wave at a point across the wooden member. The received ultrasonic waves are processed to determine anomalies and/or grain variations in the wooden member at positions of the wooden member between the ultrasonic transmitter and the ultrasonic receiver(s). The ultrasonic transmitters and receivers the ultrasound may be placed in rollers to facilitate high-speed, in-line processing of wooden members.
摘要:
Ultrasonic technique is applied to the measurement of wooden member (10) to identify localized anomalies internal to the wooden member (10) substantially smaller than the full width of the ultrasonic beam (48).
摘要:
A system for inspecting railroad rail (10) using phased array ultrasonic technology measures the time of flight of ultrasonic signals (80-85) at locations across the rail head to determine the wear profile of the rail (10). The rail wear profile is then used to adjust the focal laws of the phased array ultrasonic probes (30-36) to dynamically compensate for changes in the rail profile as the inspection vehicle (12) moves along the rails (10).
摘要:
A method and apparatus for inspecting an object is provided. Movement of inspection vehicles relative to a surface of the object is controlled using a controller. Generation of data about the object by sensor systems configured to generate the data when the sensor systems are in a configuration with respect to a location on the object for inspection and receiving power from the inspection vehicles is controlled using the controller. The data generated by the sensor systems is stored.
摘要:
The present invention provides a sensor (200) for structural health monitoring that includes a dielectric substrate (202), a piezoelectric device (208) for actuating and/or sensing Lamb waves, a molding layer (228) deposited over the piezoelectric device (208), a cover layer (206) deposited over the molding layer (228) and a hoop layer (204) surrounding the piezoelectric device (206) and being attached to the substrate (202). The sensor (200) further includes an optical fiber coil sensor (2 10) attached to the dielectric substrate (202), where the coil sensor (2 10) has a rolled optical fiber cable (224) and a coating layer (220) applied to the rolled optical fiber cable (224). The present invention also provides a diagnostic patch network (600) that includes a plurality of patch sensors (602) attached to a host structure (610) and a bridge box (604) connected to the patch sensors (602).