Ablation layers to prevent pitting in laser peening

Hackel, Lloyd A

Title: Ablation layers to prevent pitting in laser peening

Patent · Tue Aug 09 00:00:00 EDT 2016

OSTI ID:1289919

Hackel, Lloyd A

A hybrid ablation layer that comprises a separate under layer is applied to a material to prevent pitting resulting from laser peening. The underlayer adheres to the surface of the workpiece to be peened and does not have bubbles and voids that exceed an acceptable size. One or more overlayers are placed over and in contact with the underlayer. Any bubbles formed under the over layers are insulated from the surface to be peened. The process significantly reduces the incidence of pits on peened surfaces.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: W-7405-ENG-48

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Number(s):: 9,409,254

Application Number:: 11/240,676

OSTI ID:: 1289919

Resource Relation:: Patent File Date: 2005 Sep 30

Country of Publication:: United States

Language:: English

References (11)

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Laser peening system and method Ortiz, Jr., Angel L.; Penney, Carl M.; Jones, Marshall Gordon https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4937421 US Patent Document 4,937,421	patent	June 1990
Material properties Epstein, Harold M.; Clauer, Allan H.; Mueller, Boyd A. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5131957 US Patent Document 5,131,957	patent	July 1992
Dry tape covered laser shock peening Mannava, Seetharamaiah; Yeaton, Robert L.; McDaniel, Albert E. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5674328 US Patent Document 5,674,328	patent	October 1997
Laser peening process and apparatus Dulaney, Jeff L. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5741559 US Patent Document 5,741,559	patent	April 1998
Laser shock peening using low energy laser Mannava, Seetharamaiah; Rockstroh, Todd Jay; Kelley, James G. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5932120 US Patent Document 5,932,120	patent	August 1999
Release liner incorporating a metal layer Golledge, Adrian D. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6355322 US Patent Document 6,355,322	patent	March 2002
Method of bonding a layer of material to a substrate Rich, Barbara J.; Williams, Larry https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6440254 US Patent Document 6,440,254	patent	August 2002
Laser shock peening tape, method and article Miller, Mark Lloyd; Azad, Farzin H.; Mannava, Seetha Ramaiah https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6677037 US Patent Document 6,677,037	patent	January 2004
Flexible electric circuit for heating comprising a metallised fabric Ferguson, Patrick https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7115844 US Patent Document 7,115,844	patent	October 2006
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