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William P. Leser
Researcher at Langley Research Center
Publications - 30
Citations - 352
William P. Leser is an academic researcher from Langley Research Center. The author has contributed to research in topics: Monte Carlo method & Uncertainty quantification. The author has an hindex of 8, co-authored 28 publications receiving 229 citations.
Papers
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Journal ArticleDOI
Multi-mode reverse time migration damage imaging using ultrasonic guided waves.
TL;DR: A reverse‐time migration imaging algorithm was combined with a numerical simulator—the three‐dimensional (3D) elastodynamic finite integration technique (EFIT)—to provide multi‐mode damage imaging that enables characterization of damage type and size, general sensitivity to unknown damage types, higher resolution imaging, and detectability regardless of the data acquisition system used.
Journal ArticleDOI
IWSHM 2015: Probabilistic fatigue damage prognosis using surrogate models trained via three-dimensional finite element analysis
Patrick E. Leser,Jacob D. Hochhalter,James E. Warner,John A. Newman,William P. Leser,Paul A. Wawrzynek,Fuh-Gwo Yuan +6 more
TL;DR: In this article, structural health monitoring (SHM) is integrated with damage progression models to form a probabilistic prediction of a structure's rema... using inverse uncertainty quantification techniques.
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A Digital Twin Feasibility Study (Part II):Non-Deterministic Predictions of Fatigue Life Using In-Situ Diagnostics and Prognostics
Patrick E. Leser,James E. Warner,William P. Leser,G.F. Bomarito,John A. Newman,Jacob D. Hochhalter +5 more
TL;DR: The ability to predict accurately and in the presence of uncertainty is demonstrated, suggesting that the proposed DT method is feasible for fatigue life prognosis and should be pursued further with a focus on increasing application realism.
Coupling Damage-Sensing Particles to the Digitial Twin Concept
Jacob D. Hochhalter,William P. Leser,John A. Newman,Edward H. Glaessgen,Vipul K. Gupta,Vesselin Yamakov +5 more
TL;DR: In this article, a first step toward integrating two emerging structural health management paradigms: digital twin and sensory materials is presented, which is an emerging life management and certification paradigm whereby models and simulations consist of as-built vehicle state, as-experienced loads and environments, and other vehicle-specific history to enable high-fidelity modeling of individual aerospace vehicles throughout their service lives.
Journal ArticleDOI
In Situ Microscopic Investigation to Validate Acoustic Emission Monitoring
Brian Wisner,Mike Cabal,P. A. Vanniamparambil,Jacob D. Hochhalter,William P. Leser,Antonios Kontsos +5 more
TL;DR: In this article, a novel experimental mechanics technique using Scanning Electron Microscopy (SEM) in conjunction with Acoustic Emission (AE) monitoring is discussed to investigate microstructure-sensitive mechanical behavior and damage of metals and to validate AE related information.