摘要:
The present invention relates to a mobile apparatus and/or system that measures the thickness at one or more locations of a surface on at least a part of a substrate and methods of using said apparatus and/or system. The mobile apparatus and/or system in one embodiment includes an apparatus and/or system having a coating thickness monitor and, optionally, an apparatus and/or system for simultaneously regulating the coating thickness applied on a substrate. In another embodiment, the apparatus and system has the ability to measure coating thickness subsequent to the coating's formation.
摘要:
A method of modelling a surface (3) of an object (2) using ultrasonic transducers (4, 5) mounted on the surface comprises the steps of: • providing a model of the surface, the model comprising a primary set of surface points indicative of the height of the surface, • transmitting pulsed waves from a first transducer (4) to one or more second transducers (5), the first transducer and each second transducer defining a respective path along the surface, • measuring travel times of the pulsed waves along each path, • calculating travel times based on the model of the surface, • adjusting the model of the surface in response to any discrepancies between the measured travel times and the calculated travel times, and • repeating the steps of transmitting, measuring, calculating and adjusting until the discrepancies are smaller than a predetermined threshold.
The step of calculating the travel times comprises the sub-step of interpolating the primary set of surface points in order to obtain an expanded secondary set of surface points, the travel times being calculated using the expanded set. Thus the number of surface points to be determined is substantially reduced.
摘要:
The invention is directed to a system and method for implementing process control for paint thickness using sonic NDE techniques. The system may, for example, generate ultrasound waves in a test object during the manufacturing process. A detector such as an interferometer may be used to detect the ultrasound waves. An interpreter or analyzer may determine the thickness and or presence of a defect from the waves. Further, the interpreter may associate the thickness measurement and/or defect with a location about an object. Then, a control system may determine and implement an appropriate control action on the process. The control action may also be associated with the location about the object.
摘要:
A process and apparatus (200) for treating a wellbore (105) comprising subjecting a substantially same portion of the wellbore (105) to vibratory waves (220) produced by a plurality of wave generators (205 and 210). The waves (220) may have about the same frequency or a plurality of frequencies and the frequencies may partially overlap, not overlap, or be modulated across a range. Additionally, the frequencies may be modulated in an oval, hoop, and flexural modes. The vibratory waves (220) may be produced by firing the vibratory wave generators (205 and 210) simultaneously or in sequence. The wave generators (205 and 210) maybe a vibrating pipe, a piston, or a valve.
摘要:
The invention relates to a device for determining the state, especially the permeability, of a particle filter. Said device comprises a sound source (1) for emitting a sound signal (1.1) in the direction of the particle filter (3) and a sound receiver (2) for receiving the sound signal (1.2) modified by the particle filter (3). A control and evaluation unit (4) is also provided for controlling the sound source (1) and for evaluating the received sound signal (1.2).
摘要:
The invention relates to a device for the dimensional characterisation of an object (8) comprising a cylindrical surface which is symmetrical about a longitudinal axle. Said device comprises at least six probes (Si) used to emit six pulsed waves, each probe being respectively oriented towards a separate measuring point of the cylindrical surface, and to collect the pulsed waves reflected at each measuring point. Said device also comprises first means for calculating the position of each measuring point, and second means for calculating a characteristic curve of the cylindrical surface by interpolation from the corresponding position of each of said points.
摘要:
An acoustic testing apparatus for testing a laminate material comprising at least one layer of a first material having a first velocity for a first vibration mode and at least one layer, adjacent to said first layer, of a second material having a velocity for a second vibration mode, approximately equal to said first velocity, said acoustic testing apparatus comprising: a first transducer for projecting an acoustic test signal onto a first layer of said at least one layer of a first material disposed in a testing zone, wherein a second transducer for receiving said test signal from said testing zone, and in that said first transducer is adapted to project said test signal at an angle so as to generate in said first layer vibrations of at least said first vibration mode, wherein said vibrations of said first vibration mode are incident on an interface with said layer of said second material under an incidence angle so as to produce in said second layer vibrations of at least said second vibration mode, so that refraction of said test signal at said interface is suppressed.
摘要:
The invention relates to a method for determining the lateral position of a web or fabric edge in a web forming machine. The method uses ultrasound and the position of the edge (11) is determined by means of a distance measurement at the side of a web or fabric (10). The invention also relates to a corresponding apparatus.
摘要:
A method of inspecting the integrity of a tubular having a wall thickness, which method comprises the steps of: (a) with an inspection means taking measurements representative of the wall thickness around substantially the entire circumference at a plurality of locations along substantially the entire length of said tubular; (b) generating electronic data from said measurements representative of the wall thickness over substantially the entire tubular; and (c) electronically storing substantially all of said electronic data, the storage of data representing wall thickness over substantially the entire tubular facilitating both estimation of the overall mechanical properties of the tubular and identification of localised defects.