Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Eric R. Burke"'
Autor:
Tsuyoshi Nakagawa, Eric R. Burke, Jess M. Waller, Johannes Gumpinger, Akio Koike, T. Ghidini, Tsuyoshi Itoh, Martin Born, Douglas N. Wells, Charles Nichols, Masami Mitsui, Ana D. Brandão
Publikováno v:
Structural Integrity of Additive Manufactured Parts ISBN: 9780803176867
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78826d4dd943a05da7a6f8fbc9382a63
https://doi.org/10.1520/stp162020180106
https://doi.org/10.1520/stp162020180106
Publikováno v:
SAMPE 2019 - Charlotte, NC.
The preliminary design and development of an automated ultrasonic scanning system for in-situ composite cure monitoring and defect detection in the high temperature environment of an oven was completed. This preliminary design is a stepping stone to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c61db4757c429fbe63126b2317cce5e4
https://doi.org/10.33599/nasampe/s.19.1523
https://doi.org/10.33599/nasampe/s.19.1523
Publikováno v:
Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems, Volume 9 ISBN: 9783319422541
Large area nondestructive evaluation (NDE) inspections are required for fatigue testing of composite structures to track damage initiation and growth. Of particular interest is the progression of damage leading to ultimate failure to validate damage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de0db5cac639b43dd3700648baa64dc3
https://doi.org/10.1007/978-3-319-42255-8_4
https://doi.org/10.1007/978-3-319-42255-8_4
Publikováno v:
SPIE Proceedings.
Passive thermography and acoustic emission data were obtained for improved real time damage detection during fatigue loading. A strong positive correlation was demonstrated between acoustic energy event location and thermal heating, especially if the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bb299bc5dc5abb3b67e5f894489348b
https://doi.org/10.1117/12.2220402
https://doi.org/10.1117/12.2220402
Autor:
Eric R. Burke, Robert A. Hafley, Joseph N. Zalameda, Karen M. Taminger, Brian L. Taminger, Christopher S. Domack
Publikováno v:
SPIE Proceedings.
Researchers at NASA Langley Research Center have been developing the Electron Beam Freeform Fabrication (EBF3) metal additive manufacturing process for the past 15 years. In this process, an electron beam is used as a heat source to create a small mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ce48ac63481c96400083bb0419d0584
https://doi.org/10.1117/12.2222439
https://doi.org/10.1117/12.2222439
Publikováno v:
AIP Conference Proceedings.
Nondestructive evaluation (NDE) utilizes a variety of techniques to inspect various materials for defects without causing changes to the material. X-ray computed tomography (CT) produces large volumes of three dimensional image data. Using the task o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a23fd9a8f2faddf35f6f7e3f1ba2363
https://doi.org/10.1063/1.4940585
https://doi.org/10.1063/1.4940585
Publikováno v:
AIP Conference Proceedings.
A novel concept for the detection of x-rays with microstructured optical fibers containing quantum dots scintillation material comprised of zinc sulfide nanocrystals doped with magnesium sulfide is presented. These quantum dots are applied inside the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::672d252f9f801c02af303679af84fd21
https://doi.org/10.1063/1.4940583
https://doi.org/10.1063/1.4940583
Publikováno v:
AIP Conference Proceedings.
Scintillation is the process currently employed by conventional X-ray detectors to create X-ray images. Scintillating quantum dots (StQDs) or nano-crystals are novel, nanometer-scale materials that upon excitation by X-rays, re-emit the absorbed ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35267cf075e6d7072773e9a5a8465b81
https://doi.org/10.1063/1.4940578
https://doi.org/10.1063/1.4940578
Publikováno v:
SPIE Proceedings.
Principal Component Analysis (PCA) has been shown effective for reducing thermographic NDE data. While a reliable technique for enhancing the visibility of defects in thermal data, PCA can be computationally intense and time consuming when applied to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e942eaa4731537b031b5322797a890a2
https://doi.org/10.1117/12.2176285
https://doi.org/10.1117/12.2176285
Publikováno v:
SPIE Proceedings.
Fatigue testing of advanced composite structures is critical to validate both structural designs and damage prediction models. In-situ inspection methods are necessary to track damage onset and growth as a function of load cycles. Passive thermograph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc0632d1002c3521d21bcfd3eebc84a0
https://doi.org/10.1117/12.2177719
https://doi.org/10.1117/12.2177719