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Title: Further Investigation of Surface Velocity Measurements for Material Characterization in Laser Shockwave Experiments

Abstract

Further investigation of surface velocity measurements for material characterization in laser shockwave experiments James A. Smith, Jeffrey M. Lacy, Clark L. Scott, Bradley C. Benefiel Idaho National Laboratory, Idaho Falls ID Daniel Levesque, Jean-Pierre Monchalin and Martin Lord, National Research Council Canada, Boucherville, QC, Canada ---As part of the US High Performance Research Reactor program, a laser shockwave system is being developed by the Idaho National Laboratory (INL) to characterize interface strength in innovative plate fuel for research reactors around the world. The INL has been working with National Research Council Canada (NRC) on this project for the last five years. One of the concerns is the difficulty of calibrating and standardizing the laser shock technique. The generation of a stress wave by the laser impinging on the plate surface is dependent on the surface preparation, temporal and spatial power distribution of the laser spot, and material properties of the plate. Thus the resulting back surface velocity used to measure the time-varying stress field within the plate is difficult to reproduce across different measurement systems. ---A recent analytical study and testing support the use of the Hugoniot Elastic Limit (HEL) in materials as a robust and simple benchmark to comparemore » stresses generated by different laser shock systems [1]. Using a non-contact laser velocimeter based on a solid Fabry-Perot etalon, the systems at NRC and INL showed that the velocity reached at the HEL is consistent, independent of the laser power used. In this work, the laser velocimeter of the NRC system is tested against a fast rotating wheel to verify accuracy and determine best operating conditions. A round robin test between the two laser shock systems on plates of different Al alloys is presented that shows the correct classification of the Al alloys based on the HEL as well as determining the bias between the systems. Also the effects of some setup parameters on other characteristics of the surface velocity and corresponding stress wave are discussed. 1. J.A. Smith, J.M. Lacy, D. Levesque, J.-P. Monchalin and M. Lord, "Use of the Hugoniot elastic limit in laser shockwave experiments to relate velocity measurements, 42nd Annual Review of Progress in Quantitative Nondestructive Evaluation, AIP Conf. Proc. 1706, pp. 080005-1-080005-10, 2016.« less

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1402458
Report Number(s):
INL/CON-17-41749
Journal ID: ISSN 0094--243X
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Journal Volume: 1949; Conference: 44th Annual Review in Progress in Quantitative Nondestructive Evaluation, Utah Valley Convention Center, Provo, UT (United States), 15-21 Jul 2017
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 36 MATERIALS SCIENCE; Laser Ultrasonics; HEL; Interfacce Strength; Laser Shock; Laser Shock, Laser Ultrasonics, HEL, Interface str

Citation Formats

Smith, James A., Lacy, Jeffrey M., Scott, Clark L., Benefiel, Bradley C., Lévesque, Daniel, Monchalin, Jean-Pierre, and Lord, Martin. Further Investigation of Surface Velocity Measurements for Material Characterization in Laser Shockwave Experiments. United States: N. p., 2017. Web. doi:10.1063/1.5031630.
Smith, James A., Lacy, Jeffrey M., Scott, Clark L., Benefiel, Bradley C., Lévesque, Daniel, Monchalin, Jean-Pierre, & Lord, Martin. Further Investigation of Surface Velocity Measurements for Material Characterization in Laser Shockwave Experiments. United States. doi:10.1063/1.5031630.
Smith, James A., Lacy, Jeffrey M., Scott, Clark L., Benefiel, Bradley C., Lévesque, Daniel, Monchalin, Jean-Pierre, and Lord, Martin. Fri . "Further Investigation of Surface Velocity Measurements for Material Characterization in Laser Shockwave Experiments". United States. doi:10.1063/1.5031630. https://www.osti.gov/servlets/purl/1402458.
@article{osti_1402458,
title = {Further Investigation of Surface Velocity Measurements for Material Characterization in Laser Shockwave Experiments},
author = {Smith, James A. and Lacy, Jeffrey M. and Scott, Clark L. and Benefiel, Bradley C. and Lévesque, Daniel and Monchalin, Jean-Pierre and Lord, Martin},
abstractNote = {Further investigation of surface velocity measurements for material characterization in laser shockwave experiments James A. Smith, Jeffrey M. Lacy, Clark L. Scott, Bradley C. Benefiel Idaho National Laboratory, Idaho Falls ID Daniel Levesque, Jean-Pierre Monchalin and Martin Lord, National Research Council Canada, Boucherville, QC, Canada ---As part of the US High Performance Research Reactor program, a laser shockwave system is being developed by the Idaho National Laboratory (INL) to characterize interface strength in innovative plate fuel for research reactors around the world. The INL has been working with National Research Council Canada (NRC) on this project for the last five years. One of the concerns is the difficulty of calibrating and standardizing the laser shock technique. The generation of a stress wave by the laser impinging on the plate surface is dependent on the surface preparation, temporal and spatial power distribution of the laser spot, and material properties of the plate. Thus the resulting back surface velocity used to measure the time-varying stress field within the plate is difficult to reproduce across different measurement systems. ---A recent analytical study and testing support the use of the Hugoniot Elastic Limit (HEL) in materials as a robust and simple benchmark to compare stresses generated by different laser shock systems [1]. Using a non-contact laser velocimeter based on a solid Fabry-Perot etalon, the systems at NRC and INL showed that the velocity reached at the HEL is consistent, independent of the laser power used. In this work, the laser velocimeter of the NRC system is tested against a fast rotating wheel to verify accuracy and determine best operating conditions. A round robin test between the two laser shock systems on plates of different Al alloys is presented that shows the correct classification of the Al alloys based on the HEL as well as determining the bias between the systems. Also the effects of some setup parameters on other characteristics of the surface velocity and corresponding stress wave are discussed. 1. J.A. Smith, J.M. Lacy, D. Levesque, J.-P. Monchalin and M. Lord, "Use of the Hugoniot elastic limit in laser shockwave experiments to relate velocity measurements, 42nd Annual Review of Progress in Quantitative Nondestructive Evaluation, AIP Conf. Proc. 1706, pp. 080005-1-080005-10, 2016.},
doi = {10.1063/1.5031630},
journal = {},
issn = {0094--243X},
number = ,
volume = 1949,
place = {United States},
year = {2017},
month = {9}
}

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