Model‐based algorithms for detecting damage in ultrasonic nondestructive evaluation measurements

Ultrasonic Signal Processing Platform for Nondestructive Evaluation

Nondestructive Evaluation of Damage in Beams Using Displacement Curvature

In this paper, the capabilities of displacement curvature derived from static response data for finding the location and severity of damage in Euler-Bernoulli beams are assessed. Static response of a beam is obtained using the finite element modeling. In order to reduce the number of measured nodal displacements, the beam deflection is fitted through a polynomial function using a limited number...

Fast Geometric Algorithms for Tomographic Nondestructive Evaluation

In this paper we describe the development and application of a novel approach to fast nondestructive evaluation (NDE) via direct estimation of signi cant features from tomographic data without image reconstruction. Classically, the term tomographic has been used to refer only to X-ray, and perhaps magnetic resonance techniques, but in our framework we point out that it has been recently shown t...

Ultrasonic Nondestructive Testing Method for Evaluation of Annular Seals

Drilling boreholes is common practice in geotechnical and geoenvironmental investigations and in various other ex­ ploration, testing, and monitoring appli­ cations. When a casing is placed in a borehole an annular space is created be­ tween the casing and the surrounding soil. If not properly sealed, this annular space can be a potential path for trans­ port of contaminants in the subsurface e...

Quantitative ultrasonic assessment for detecting microscopic cartilage damage in osteoarthritis

Osteoarthritis (OA) is one of the most prevalent chronic conditions. The histological cartilage changes in OA include surface erosion and irregularities, deep fissures, and alterations in the staining of the matrix. The reversibility of these chondral alterations is still under debate. It is expected that clinical and basic science studies will provide the clinician with new scientific informat...