Fiber reinforced polymer (FRP) composites are getting a wide range of application areas in bridge rehabilitations because these materials are less affected by corrosive environmental conditions, known to provide longer life and require less maintenance. However, there are still some concerns about their long-term performance because currently limited data exists. Moreover, the quality control a...

Michael Dominic Ciocco An invariance transformation algorithm for defect characterization of ultrasonic signals for the nondestructive evaluation of concrete 2002 Dr. Shreekanth Mandayam College of Engineering Nondestructive evaluation (NDE) techniques offer cost-effective strategies for monitoring the integrity of a variety of civil infrastructure, such as natural gas and sewer pipelines, with...

The growing demand for power is putting tremendous stress on existing power plants for generating electricity. The plants are being operated for longer periods of time under heavy load conditions. Reliability of key components of the power plant such as steam or gas turbines and generators is of prime importance. Many utilities are interested in extending the life of turbine-generator component...

Nondestructive testing (NDT) system engineering is comprised of different technologies, primarily measurement physics, computing, electronics, mechanical engineering and automation. Significant progress in sensor physics, microelectronics and computing in the last decade will change both the quality and application of NDT. We present examples of intelligent sensor technologies and integrated, e...

A new robust and fast method for non-interactive line segmentation of interferograms is proposed. Fringe contours are represented as a set of polygons using a new technique for contour approximation. The method has been developed for application in interferometry with continuously deforming objects. Its application to real-time holographic interferometry in nondestructive testing is shown.

This paper aims to advance the field of nondestructive testing by eddy currents. It provides a mathematical and numerical framework for imaging small volume conductive inclusions of arbitrary shapes from electromagnetic induction data. The effect of measurement noise on the localization and characterization approach developed in this paper is investigated. Mathematics Subject Classification (MS...

This article describes the national and international history, present situation and developing tendency in the research on nondestructive testing of mechanical parameters of Wood-based materials. It stressfully introduces foreign contributions in the field in order to provide some useful references to the researchers.

The mechanical properties of wrought iron from multiple elements of six late 19th-century truss bridges is evaluated by a program of destructive and nondestructive testing, including hardness testing and tension tests to evaluate the yield stress (Fy), tensile strength (Fu), and ductility of the material. The yield stress and tensile strengths are found to be in accordance with those published ...

Abstract: WDM transmission performance can be monitored efficiently by blind signal separation methods based on higher-order statistics for WDM-channel extraction. Relative to a recent method, our procedure has reduced complexity, no stability problems, and better performance. c © 2002 Optical Society of America OCIS codes: (060.4510) Optical communications; (070.6020) Signal processing; (070.6...