摘要:
An X-ray tube anode assembly and an X-ray tube assembly are disclosed that include an X-ray target and a drive assembly configured to provide an oscillatory motion to the X-ray target. The drive assembly is configured to provide an oscillatory motion to the target assembly.
摘要:
A system for radiographic inspection of an object is provided. The system comprises a radiation source configured to generate radiation, a display unit for generating a graphical user interface (GUI) including multiple fields. A user provides input data via the fields in the GUI. A processor configured to compute a plurality of exposure parameters based on the input data and a control system is configured to initialize the radiation source with the exposure parameters.
摘要:
Imaging systems including a multiple focal spot x-ray source adapted to irradiate an object with a series of angularly displaced x-ray beams, one at a time, without substantial rotation or translation of the multiple focal spot x-ray source are provided. Such systems also includes a detector adapted to receive at least a fraction of the angularly displaced x-ray beams after being attenuated by the object to produce at least two x-ray projection images of the object. The imaging systems also include a processor adapted to shift and add the at least two x-ray projection images to bring at least two planes of the object into focus, one at a time.
摘要:
A method of providing an image of an interior of a structure containing regions having different conductivities or admittivities. In one embodiment a series of electrical signal sets is applied to a series of electrodes, each signal set generating a rotating electric field. A measured set of electrical signals obtained from the electrodes are used to calculate a conductivity or admittivity distribution representative of the interior of the structure in a region about which the electrodes are positioned. The process of calculating the distribution includes defining a cost function, e.g., the energy function based on the distribution, and a forward model expressing the measured set of electrical signals as a function of the change in voltage values with respect to conductivity or admittivity and requiring that the partial derivative of the difference between the energy function and a function based on the forward model equal zero.
摘要:
A system and method are disclosed for locating a maintenance device approximate an area of interest of a wind turbine. The system generally includes a carriage configured to support the maintenance device and a cable having first and second ends attached to the carriage. Additionally, the system includes first and second anchor points, with the first anchor point being disposed adjacent to a component of the wind turbine. The second anchor point is spaced apart from the first anchor point such that the area of interest is generally disposed between the first and second anchor points. The cable may be coupled along its length between the first and second anchor points such that, as the cable is displaced, the carriage is moved to a position at which the area of interest is accessible to the maintenance device.
摘要:
An X-ray tube anode assembly and an X-ray tube assembly are disclosed that include an X-ray target and a drive assembly configured to provide an oscillatory motion to the X-ray target. The drive assembly is configured to provide an oscillatory motion to the target assembly.
摘要:
An X-ray tube anode assembly, an X-ray tube assembly and a method for heat management to an X-ray assembly having a movable X-ray target having a target surface. The anode assembly includes a drive member arranged and disposed to provide oscillatory motion to the target assembly and a target surface that is configured to remain at a substantially fixed distance from a cathode assembly during oscillatory motion.
摘要:
A system is provided for radiographic inspection of an object comprising multiple having different material properties. The system comprises a radiation source configured to generate radiation, a display unit for generating a graphical user interface (GUI) including multiple fields. A user enters input data via the fields in the GUI. The input data relates to one or more material properties for each of the regions. A processor is configured to compute a plurality of exposure parameters based on the input data.
摘要:
A portable wear quantification system includes a hand-held image acquisition device and a fixture. The fixture includes a first end coupled to the image acquisition device. A light source emits a light beam along an emission axis. A beam splitter is disposed at an angle with respect to an axis of view of the image acquisition device for directing the beam from the light source toward a portion of an object. A second end of the fixture is located on an opposite side of the beam splitter from the first end. The second end includes a platform that is configured to position the fixture with respect to the object. A channel extends from the first end to the second end along the axis of view of the image acquisition device.
摘要:
An imaging technique is provided for acquiring scatter free images of an object. The technique includes acquiring a plurality of projection images of the object using a source and a detector oriented at a plurality of projection angles relative to the object, and generating a plurality of scatter free projection images by correcting the plurality of projection images based on respective ones of a plurality of stored scatter images. The scatter images are generated and stored for each of the projection angles by positioning a scatter rejection plate between the object and the detector. The technique further includes reconstructing a three-dimensional image of the object based on the scatter free projection images.