Title:
Projection Moiré Method And Apparatus For Dynamic Measuring Of Thermal Induced Warpage

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dc.contributor.patentcreator Ume, Ifeanyi Charles
dc.contributor.patentcreator Petriccione, Gregory James
dc.date.accessioned 2017-05-12T14:27:52Z
dc.date.available 2017-05-12T14:27:52Z
dc.date.filed 7/7/2000
dc.date.issued 5/13/2003
dc.description.abstract The projection moiré and temperature controlled chamber system houses a workpiece in the chamber and subjects the workpiece to changing temperatures according to a predefined temperature/time profile. As the workpiece is subjected to changing temperatures, a projection moiré system projects a plurality of moiré fringe patterns onto the workpiece, and a camera detects thermally induced warpage in the workpiece. The detection of thermally induced warpage, indicated by changes in the projected fringe moiré patterns on the workpiece, is analyzed by a processing unit. The temperature controlled chamber includes a plurality of heating sources, at least one cooling source, temperature probes and an adjustable support frame. Output temperature of the heating/cooling sources may be variable. The position of the support frame is adjustable and controlled by the processor in a manner such that a reference point associated with the workpiece or the frame is held in a stationery manner. The chamber may also include a plurality of air blowers and exhaust vents to facilitate temperature control within the chamber. An alternative embodiment includes a supplemental shadow moiré system.
dc.description.assignee Georgia Tech Research Corporation
dc.identifier.cpc G01B11/25
dc.identifier.patentapplicationnumber 09/611394
dc.identifier.patentnumber 6564166
dc.identifier.uri http://hdl.handle.net/1853/57483
dc.identifier.uspc 702/136
dc.title Projection Moiré Method And Apparatus For Dynamic Measuring Of Thermal Induced Warpage
dc.type Text
dc.type.genre Patent
dspace.entity.type Publication
local.contributor.corporatename Georgia Institute of Technology
local.relation.ispartofseries Georgia Tech Patents
relation.isOrgUnitOfPublication cc30e153-7a64-4ae2-9b1d-5436686785e3
relation.isSeriesOfPublication 0f49c79d-4efb-4bd9-b060-5c7f9191b9da
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