Scientific Measurement Systems, Inc.

Other

Bethlehem Steel Corporation

Scientific Measurement System

Scientific Measurement Systems I, Ltd.

Hunter D Ellinger

Ira L Morgan

E C Sudarshan

James W Jagger

James P Coose

Alvin L Mitchell

Carvel D Hoffman

Charles J Romberger

Thomas W Stephens

Richard D Savage

Morris Taylor

Forrest F Hopkins

Thomas Stephens

A method of comparison includes the step (14) of obtaining an interior and exterior image of an object to be compared. A standard of measurements for an acceptable object is created in step (12). An automatic comparison is made in step (14) of the image of the object to be compared with the standard and a comparison report is generated in step (16) listing deviations of the image of the object to be compared from the standard for the acceptable object. An x-ray CT scanner (76) may be utilized for obtaining the images and the standard may be derived from an actual, acceptable object or from design specifications for acceptable objects. In a preferred embodiment, CAD designs are utilized to create the standards for comparison.

Apparatus and method for comparison

The present invention relates to a computer tomography system which measures the thickness and edge position of hot-rolled steel. X-rays produced by two X-ray sources are directed, through the sample being measured, to a plurality of radiation detectors. The radiation detectors measure the attenuation of the X-rays caused by the sample. The attenuation levels sensed by each detector are correlated with each detector's physical location. This information is collected as each X-ray source illuminates the radiation detectors. The collected information is triangulated or averaged, as necessary, to determine the dimensions and position of the measured sample.

Online tomographic gauging of sheet metal

An apparatus and method of non-contacting, non-destructive, on-line dimensional analysis and flaw detection of tubular products are disclosed. The apparatus includes penetrating radiation sources and detectors arranged about the product to be examined and a high-speed data processing system which employs novel computed tomography techniques to provide high precision dimensional estimates and flaw detection. The apparatus is capable of continuously determining the outside diameter, inside diameter, wall thickness, ovality, eccentricity, and weight-per-foot over a wide range of temperatures for essentially tubular products produced on a unit or continuous basis. The apparatus can also detect process-induced flaws in the products.

Method and apparatus for dimensional analysis and flaw detection of

An apparatus for determining the intensity of radiation passing through an object as a set of planar beams from a radiation source is disclosed. The radiographic apparatus includes a detector array of adjoining scintillators having wall linings suitable for absorbing radiation, thereby functioning as self-colliminating detectors. The apparatus is also capable of counting the number of individual photons of primary radiation passing through an object along each path from a radiation source operating at the very high count rates used in computer-assisted tomography applications.

Method and apparatus for measuring radiation in computer-assisted

Apparatus and method for the tomographic examination of planar sections of an object is disclosed which includes a plurality of sources spaced about an object at fixed intervals which emit a set of planar beams of penetrating radiation, such as X-rays or gamma rays, through a planar section of the object and a plurality of self-collimating detector arrays positioned to receive only photons of radiation which pass through the planar section of the object from the source directly opposite the array. The sources and detector arrays are mounted on a mounting apparatus to prevent movement relative to each other. Each of the detector arrays includes a plurality of self-collimating detectors which count the number of individual primary radiation photons passing through the object along the path from the source to the detector without absorption or deflection.

Method and apparatus for tomographic examination of an object by

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Austin, TX, United States of America

Hunter D Ellinger