Method for setting up and controlling confinement media flow in laser shock peening

A method for setting up a transparent confinement media nozzle (123) for flowing the confinement media (121) during laser shock peening (LSP) of a work piece (108) includes the following steps: Step A) flowing a confinement media (121) and setting a flow rate of the confinement media through a confi...

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Bibliographische Detailangaben
Hauptverfasser:	LAWRENCE, WAYNE LEE, KLAASSEN, RICHARD EUGENE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TESTING TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method for setting up a transparent confinement media nozzle (123) for flowing the confinement media (121) during laser shock peening (LSP) of a work piece (108) includes the following steps: Step A) flowing a confinement media (121) and setting a flow rate of the confinement media through a confinement media flow nozzle (123); Step B) positioning the nozzle (123) to flow the confinement media through the nozzle (123) and onto the correlation surface (154); and Step C) measuring a confinement media layer thickness (T) on the correlation surface (154) using an ultrasonic transducer (20) attached to a side (148) of the test piece opposite that of the correlation surface (154). One embodiment of the invention employs the work piece (108) as the test piece and the correlation surface (154) is a first laser shock peening surface (154) on a first side of the work piece (108). Further embodiments includes Step D) comparing the measured and recorded confinement media layer thickness (T) from Step C) against a predetermined value or range of values for confinement media layer thickness (T) and Step E) determining whether to reset the confinement media flow rate and/or nozzle position or proceeding with the laser shock peening (LSP) of the work piece (108) with the confinement media flow rate and nozzle position set in Step A) based on the comparison in Step D).