Transducer Models for the Finite Element Simulation of Ultrasonic NDT Phenomena

Ludwig, Reinhold; Moore, David; Lord, W.

doi:10.1007/978-1-4613-1893-4_73

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…Though the FEM approach has not been applied to NDT extensively, a few publications [8][9][10][11] show that this method can benefit the NDT researches in a variety of problems, especially those involving not only material anisotropy but also inhomogeneity. Fig.…”

Section: Finite Element Methods Codementioning

confidence: 99%

Surface Waves for Anisotropic Material Characterization-A Computer Aided Evaluation System

Rose

Huang

Tverdokhlebov

1990

Review of Progress in Quantitative Nondestructive Evaluation

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Section: Finite Element Methods Codementioning

confidence: 99%

Surface Waves for Anisotropic Material Characterization-A Computer Aided Evaluation System

Rose

Huang

Tverdokhlebov

1990

Review of Progress in Quantitative Nondestructive Evaluation

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“…The Gauss-Hermite [7,8,9], the multi-Gaussian [10,11], and the boundary diffraction models [12,13,14] are all paraxial models. Other models have been developed that may be more detailed but also more computationally intensive than these [15,16,17,18,19,20,21]. The models describe fields generated by transducers of different shapes and fields and are calculated on the basis of external properties of the transducer (i.e.…”

Section: Theories Of Interaction With Probe Fieldsmentioning

confidence: 99%

Evolution of Qnde’s Core Interdisciplinary Science and Engineering Base

Thompson¹,

Chimenti²

2010

AIP Conference Proceedings

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Nondestructive testing (NDT) for flaws in materials and structures has undergone an evolutionary change over the past 50 years. In the U.S. it has moved from a testing strategy (NDT) with a zero defects requirement to a test and evaluate technology (NDE) based upon damage tolerant design considerations. Here it is assumed that the part will always contain defects but those greater than a critical size, specified by fracture mechanics, will be removed by inspection thereby resetting the part's service clock. In this talk, events will be identified that were critical in promoting this paradigm shift and in moving on to quantitative NDE (QNDE). A number of major research programs were also initiated to upgrade NDT to meet the new requirements; principal attention in this talk will be given to research highlights initiated in the first of these programs, the DARPA∕AFML Interdisciplinary Program for Quantitative Flaw Definition that was established 35 years ago. Its purpose was threefold: to develop a new core science∕people base for inspection technology that could meet the new requirements, to set the stage for new field-adaptable engineering tools, and to initiate the current continuing series of quantitative NDE (QNDE) meetings. Advances initiated in this program and pursued by many over the years have resulted in a scientific core structure for quantitative NDE (QNDE) based on a linkage of fundamental models of the various measurement processes that are involved in any inspection and∕or technology. These models and their linkage will be discussed and the core structure defined. A new and powerful set of engineering tools-i.e. simulation programs for UT, X-ray, and EC technologies -has also been developed using these models. Applications of these tools will be highlighted and their role in other advanced programs including Structural Health Monitoring and Condition-Based Maintenance will be noted. Finally, a discussion of visions of future opportunities and directions for QNDE will be given. Published by the American Institute of Physics. Related ArticlesInfluence of a localized defect on acoustic field correlation in a reverberant medium J. Appl. Phys. 110, 084906 (2011) Full-field imaging of nonclassical acoustic nonlinearity Appl. Phys. Lett. 91, 264102 (2007) Laser ablation of solid substrates in a water-confined environment Appl. Phys. Lett. 79, 1396Lett. 79, (2001 Estimation of lubricant thickness on a magnetic hard disk using acoustic emission Rev. Sci. Instrum. 71, 1915 (2000) A theoretical model for acoustic emission sensing process in contact/near-contact interfaces of magnetic recording system J. Appl. Phys. 85, 5609 (1999) Additional information on AIP Conf. Proc. ABSTRACT. Nondestructive testing (NDT) for flaws in materials and structures has undergone an evolutionary change over the past 50 years. In the U.S. it has moved from a testing strategy (NDT) with a zero defects requirement to a test and evaluate technology (NDE) based upon damage tolerant design considerations. Here it ...

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“…Computer simulation analysis of wave propagation have also been conducted. A particles model [5], finite element models (6,7] and an iterative ray tracing model [8) were applied for such simulations. However, these are mostly concerned with the basic behavior of wave propagation and defect scattering.…”

Section: Introductionmentioning

confidence: 99%