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Stereo Radiographic Film/Image Analyzer 

          The Stereo Radiograph Analyzer (STEREO-R^TM) is designed to facilitate stereoscopic observation and assessment of radiographic films.  The apparatus is capable of providing a three-dimensional (3-D) view of the internal defects in an object, thereby avoiding the confusion commonly caused by defect image overlap in a 2-D radiographic film.  This added dimension now makes it possible to unambiguously and precisely locate and define the internal defects.  Representing a major break-through in NDE technology, STEREO-R^TM will dramatically improve the accuracy and reliability of your radiography tasks. 

STEREO-R^TM gives you:

•          A stereoscopic (3-D) perspective of the appearance and spatial distribution of internal defects in an object;

•          Precise definition of the nature of defects; e.g. clear discrimination among gas porosity, slag, incomplete fusion, poor penetration, shrinkage, crack, and delamination;

•          Clear determination of the spatial location and dimensions of a defect;

•          Unambiguous differentiation between a true defect and an artifact.

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HOW DOES STEREO-R WORK? 

Simply put:  It works like your vision.  What you see with your eyes viewing at a pair of radiographic films is exactly what your perspective would be if your eyes were the two X-ray beams penetrating through an object.  

STEREO-R^TM is designed on the basis of parallax theory.  Because human eyes cannot see through an optically opaque object, we rely upon X-rays or other high energy beams with a better penetrating power to see the interior of the object for us.  What is seen by these beams (artificial eyes) is preserved as images in a pair of radiographic films.  STEREO-R^TM, with its sophisticated optic system, reproduces the stereoscopic effect of the object in your eyes so that what you see is exactly what the X-rays saw. 

STEREO-R^TM, not a computed tomography (CT), does not give you computer re-constructed images of the defects.  Instead, it gives your eyes a real, unmodified 3-D whole-field perspective of a defect-laden structure.  You will be the judge! 

STEREO-R^TM does not require any modification to your existing radiographic equipment.  Just take a radiograph, slightly shift the part or X-ray source, and take a second radiograph.  By placing this pair of radiographic films on the viewing stage of STEREO-R^TM and tuning a few knobs to "focus" the image, you will develop a stereo view on the defects inside the part.  The computer (Model C-1) or microprocessor (LD-6) will automatically calculate the (x,y,z) coordinates of a defect for you.  

STEREO-R^TM is the result of an intense, long-term R & D efforts by a group of mechanical engineers, optical physicists, electrical engineers, computer scientists, and materials technologists. Model ME-1 is a mechanical or non-computerized version of STEREO-R.  

 Model C-1 Computerized STEREO-R^TM

Building on years of laboratory experience with innovative and field-proven technology, a new generation of  STEREO-R^TM analyzer has been developed.  The new computerized Model C-1 will take the guesswork out of your tasks in precisely locating and defining the internal defects in a part of up to 12 cm thick.

STEREO-R has been used in:

Manufacturing facilities of structural components; Part repair shops where radiography is conducted; Quality assurance and control units; Research institutions and universities for structural integrity assessment,  failure analysis, and 3-D fracture mechanics research; Organizations for training NDE/Radiography personnel.

• Manufacturing facilities of structural components;

• Part repair shops where radiography is conducted;

• Quality assurance and control units;

• Research institutions and universities for structural integrity assessment,  failure analysis, and 3-D fracture mechanics research;

• Organizations for training NDE/Radiography personnel.

 LD-6 Stereo Radiograph Analyzer (With Digital Display) 

     A digital version of  STEREO-R^TM, Model LD-6 brings the radiography technology to a new height. The innovative depth-locator design also allows you to unambiguously and precisely locate the depth (Z-coordinate) and estimate the dimensions of an internal defect.  In contrast to the traditional stereo radiographic viewer that provides little information on the internal defects, LD-6 gives you a vivid whole-field sense of the internal structure of an object.  As opposed to stereo fluoroscopic techniques that are difficult to operate, LD-6 is user friendly.  By properly adjusting the film positions and pressing a few buttons, you will see a magnificent perception of the internal defect morphology.  The built-in sensors and microprocessor will monitor and calculate the (X,Y,Z) coordinates of any internal feature while you are shifting the images.  The obtained data can be printed out or transferred to a personal computer for further processing.  This capability will dramatically improve the accuracy and reliability of your radiography tasks.