NDE

Ultrasound Sensors and Methods for Nuclear Power Plant Environments

Applications of ultrasounds in nuclear power plants including water detection in dry cask storage, defect detection in reactors, and health monitoring of radiation detectors.

State of the Art Assessment of NDE Techniques for Aging Cable Management in Nuclear Power Plants FY2015

This milestone report presents an update on the state-of-the-art review and research being conducted to identify key indicators of in-containment cable aging at nuclear power plants (NPPs), and devise in-situ measurement techniques that are sensitive …

Assessment of NDE for key indicators of aging cables in nuclear power plants – Interim status

Degradation of the cable jacket, electrical insulation, and other cable components of installed cables within nuclear power plants (NPPs) is known to occur as a function of age, temperature, radiation, and other environmental factors. System tests …

Experimental validation of ultrasonic NDE simulation software

Computer modeling and simulation is becoming an essential tool for transducer design and insight into ultrasonic nondestructive evaluation (UT-NDE). As the popularity of simulation tools for UT-NDE increases, it becomes important to assess their …

Progress towards prognostic health management of passive components in advanced reactors: Model selection and evaluation

This paper presents recent progress towards developing a prognostic health management framework for passive components of advanced reactors (AR). The focus of this paper is on lifecycle prognostics for passive components using a Bayesian prognostic …

Component-Level Prognostics Health Management Framework for Passive Components

This report describes research results to date in support of the integration and demonstration of diagnostics technologies for prototypical advanced reactor passive components (to establish condition indices for monitoring) with model-based …

EC-GMR array with rotating current excitation for multilayered riveted structures inspection

The challenge in detecting crack under fastener heads (CUF) in a multi-layered aircraft structure poses the need for advanced NDE technology. Our previous work has presented the feasibility of eddy current (EC) technology using giant magnetoresistive …

Image processing algorithms for automated analysis of GMR data from inspection of multilayer structures

Eddy current probes (EC) with Giant Magnetoresistive (GMR) sensors have recently emerged as a promising tool for rapid scanning of multilayer aircraft panels that helps detect cracks under fastener heads. However, analysis of GMR data is challenging …

Giant Magnetoresistance Sensors for Aircraft Inspection

Building sensor systems for reliable detection of fatigue cracks in multilayered aircraft fuselage.

A Wireless Sensor Node for Structural Health Monitoring using Guided Wave Testing

The use of wireless sensor networks in structural health monitoring can significantly increase safety and reduce manufacturing and maintenance costs. Wireless sensor networks typically use low footprint smart active sensor nodes that are permanently …