Image analysis – Applications – Manufacturing or product inspection
Patent
1997-07-13
1998-11-24
Boudreau, Leo
Image analysis
Applications
Manufacturing or product inspection
382154, 382173, 382259, 382258, 382291, 382190, 395124, G06T 760, G06T 920, G06T 1710, G01N 3344
Patent
active
058418920
ABSTRACT:
An apparatus and method for determining the Fiber Orientation Distribution (FOD) in an injection molded polymer is described. The transparent sample (12) is comprised of a matrix material, reinforcing fibers and opaque tracer fibers (12A) which are analyzed to determine the FOD and the fiber length of all fibers in the sample. The sample is formed in an injection molding apparatus (14) which includes an injection mold (16) and an injection molding unit (34). The sample is constructed and placed in the imaging apparatus (58) in order to be optically sectioned. The imaging apparatus includes an inverted microscope (60), a camera with a controller (62), a motion controller board (64) and a frame grabber (66). The sample is scanned along three (3) axes in x-y plane in the field of view of the microscope at increasing depths in the sample along the z-axis which is the line of sight of the microscope. The 3D images are analyzed to determine the FOD and fiber length of the fibers in the sample. The apparatus and method are controlled by a computer (100) using a series of programs. The programs include the Chop program, the Step program, the Acquire program, the Motion Controller and Frame Grabber (MCFG) program, the Pseudo program, the Thin3D program, the 3D-FODAS program, the DiffFOD program and the Fibor program.
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McGrath John J.
Wille Jeffrey M.
Board of Trustees operating Michigan State University
Boudreau Leo
McLeod Ian C.
Moyne Mary M.
Werner Brian P.
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