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Author: nathanael heckert

Displaying records 11 to 20 of 32 records.
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11. A Bayesian Quantitative Nondestructive Evaluation (QNDE) Approach to Estimating Remaining Life of Aging Pressure Vessels and Piping
Published: 1/1/2013
Authors: Jeffrey T Fong, William F Guthrie, James J Filliben, Nathanael A Heckert
Abstract: In this paper, we use a Bayesian quantitative nondestructive evaluation (QNDE) approach to estimating the remaining life of aging structures and components. Our approach depends on in-situ NDE measurements of detectable crack lengths and crack g ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913221

12. Tensile behavior of single PPTA fibers measured by the Kolsky bar using the direct fiber clamping method
Published: 6/11/2012
Authors: Jae Hyun Kim, Nathanael A Heckert, Stefan D Leigh, Haruki Kobayashi, Walter G McDonough, Richard L. Rhorer, Kirk D Rice, Gale Antrus Holmes
Abstract: The Kolsky bar test has been widely used in measuring material behavior under high strain rate conditions. In particular, this methodology has been used to characterize the high strain rate behavior of polymer and polymer composites during ballistic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910973

13. Statistical analysis of fiber gripping effects on Kolsky bar test
Published: 6/14/2011
Authors: Jae Hyun Kim, Nathanael A Heckert, Stefan D Leigh, Haruki Kobayashi, Walter G McDonough, Richard L. Rhorer, Kirk D Rice, Gale Antrus Holmes
Abstract: Preliminary data for testing fibers at high strain rates using the Kolsky bar test by Ming Cheng et al. 1 indicated minimal effect of strain rate on the tensile stress-strain behavior of PPTA, poly (p-phenylene terephathalamide) fibers. In a differen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908102

14. Statistical analysis of fiber gripping effects on single fiber tensile test
Published: 5/26/2011
Authors: Jae Hyun Kim, Nathanael A Heckert, Stefan D Leigh, Walter G McDonough, Haruki Kobayashi, Kirk D Rice, Gale Antrus Holmes
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907786

15. A Statistical Test Suite for Random and Pseudorandom Number Generators for Cryptographic Applications
Series: Special Publication (NIST SP)
Report Number: 800-22rev1
Published: 9/16/2010
Authors: Lawrence E Bassham, Andrew L Rukhin, Juan Soto, James R Nechvatal, Miles E. Smid, Stefan D Leigh, M Levenson, M Vangel, Nathanael A Heckert, D L. Banks
Abstract: This paper discusses some aspects of selecting and testing random and pseudorandom number generators. The outputs of such generators may be used in many cryptographic applications, such as the generation of key material. Generators suitable for use i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906762

16. A Risk-Uncertainty Formula Accounting for Uncertainties of Failure Probability and Consequence in a Nuclear Powerplant
Published: 7/20/2010
Authors: Jeffrey T Fong, Stephen R Gosselin, Pedro Vincente Marcal, James J Filliben, Nathanael A Heckert, Robert E Chapman
Abstract: This paper is a continuation of a recent ASME Conference paper entitled "Design of a Python-Based Plug-in for Bench-marking Probabilistic Fracture Mechanics Computer Codes with Failure Event Data" (PVP2009-77974). In that paper, which was co-authore ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905670

17. AN ECONOMICS-BASED INTELLIGENCE (EI) TOOL FOR PRESSURE VESSEL & PIPING (PVP) FAILURE CONSEQUENCE ESTIMATION
Published: 7/20/2010
Authors: Robert E Chapman, Jeffrey T Fong, David T Butry, Douglas S Thomas, James J Filliben, Nathanael A Heckert
Abstract: This paper is built around ASTM E 2506, Standard Guide for Developing a Cost-Effective Risk Mitigation Plan for New and Existing Constructed Facilities. E 2506 establishes a three-step protocol--perform risk assessment, specify combinations of risk ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905671

18. Design of a Python-based Plug-in for Benchmarking Probabilistic Fracture Mechanics Computer Codes with Failure Event Data
Published: 7/27/2009
Authors: Jeffrey T Fong, Roland deWit, Pedro Vincente Marcal, James J Filliben, Nathanael A Heckert, Stephen R Gosselin
Abstract: In a 2007 paper entitled "Application of Failure Event Data to Benchmark Probabilistic Fracture Mechanics (PFM) Computer Codes" (Simonen, F. A., Gosselin, S. R., Lydell, B. O. Y., Rudland, D. L., & Wikowski, G. M. Proc. ASME PVP Conf., San ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902444

19. A Design-of-Experiments Plug-In for Estimating Uncertainties in Finite Element Simulations
Published: 5/18/2009
Authors: Jeffrey T Fong, Roland deWit, Pedro Vincente Marcal, James J Filliben, Nathanael A Heckert
Abstract: The objective of this paper is to introduce an economical and user-friendly technique for estimating a specific type of finite element simulation uncertainties, or, "error bars," for a class of mathematical models, of which no closed-form o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902335

20. Through-focus Scanning and Scatterfield Optical Methods for Advanced Overlay Target Analysis
Published: 9/1/2008
Authors: Ravikiran Attota, Michael T. Stocker, Richard M Silver, Nathanael A Heckert, Hui Zhou, Richard J Kasica, Lei Chen, Ronald G Dixson, Ndubuisi George Orji, Bryan M Barnes, Peter Lipscomb
Abstract: In this paper we present overlay measurement techniques that use small overlay targets for advanced semiconductor applications. We employ two different optical methods to measure overlay using modified conventional optical microscope platforms. They ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902294



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