1,724,989 research outputs found

    Development of composite calibration standard for quantitative NDE by ultrasound and thermography

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    Inspection of aircraft components for damage utilizing ultrasonic Non-Destructive Evaluation (NDE) is a time intensive endeavor. Additional time spent during aircraft inspections translates to added cost to the company performing them, and as such, reducing this expenditure is of great importance. There is also great variance in the calibration samples from one entity to another due to a lack of a common calibration set. By characterizing damage types, we can condense the required calibration sets and reduce the time required to perform calibration while also providing procedures for the fabrication of these standard sets. We present here our effort to fabricate composite samples with known defects and quantify the size and location of defects, such as delaminations, and impact damage. Ultrasonic and Thermographic images are digitally enhanced to accurately measure the damage size. Ultrasonic NDE is compared with thermography.This proceeding may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This proceeding appeared in Dayal, Vinay, Zach G. Benedict, Nishtha Bhatnagar, and Adam G. Harper. "Development of composite calibration standard for quantitative NDE by ultrasound and thermography." In AIP Conference Proceedings, vol. 1949, no. 1, p. 060006. AIP Publishing LLC, 2018, and may be found at DOI: 10.1063/1.5031552. Copyright 2018 The Author(s). Posted with permission

    Adam G., Atlas des élections sociales en France.

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    Creusen J. Adam G., Atlas des élections sociales en France.. In: Revue française de sociologie, 1966, 7-1. p. 115

    Adam G. Oehlenschläger : la voce del genio romantico

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    The article offers an introductory presentation of the figure and works of Adam G. Oehlenschläger in the context of Danish romantic literature

    Adam G., La C.F.T.C. 1940-1958. Histoire politique et idéologique.

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    Creusen J. Adam G., La C.F.T.C. 1940-1958. Histoire politique et idéologique.. In: Revue française de sociologie, 1966, 7-1. p. 115

    Adam G., La C.F.T.C. 1940-1958. Histoire politique et idéologique.

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    Creusen J. Adam G., La C.F.T.C. 1940-1958. Histoire politique et idéologique.. In: Revue française de sociologie, 1966, 7-1. p. 115

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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