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RISModeling of Nonlinear Guided Waves and Applications to Structural Health Monitoring
Publisher: American Society of Civil Engineers
Abstract: Propagation of nonlinear waves in solid waveguides is a branch of wave mechanics that has received ever-increasing interest in the last few decades. Nonlinear guided waves are promising candidates for interrogating long ...
Nonlinear Semianalytical Finite-Element Algorithm for the Analysis of Internal Resonance Conditions in Complex Waveguides
Publisher: American Society of Civil Engineers
Abstract: Research efforts on nonlinear guided wave propagation have increased dramatically in the last few decades because of the high sensitivity of nonlinear waves to structural conditions (defects, quasi-static loads, instability ...
Quantitative Structural Health Monitoring by Ultrasonic Guided Waves
Publisher: American Society of Civil Engineers
Abstract: This paper presents a global-local (GL) method to simulate the interaction of ultrasonic guided waves with structural defects in isotropic and multilayered composite platelike structures. The GL method uses a full ...
Defect Classification in Pipes by Neural Networks Using Multiple Guided Ultrasonic Wave Features Extracted After Wavelet Processing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper casts pipe inspection by ultrasonic guided waves in a feature extraction and automatic classification framework. The specific defect under investigation is a small notch cut in an ...
Stress Measurement and Defect Detection in Steel Strands by Guided Stress Waves
Publisher: American Society of Civil Engineers
Abstract: Health monitoring of steel strands is the subject of much research in the nondestructive evaluation and civil engineering communities. This paper deals with a guided stress wave method for stress monitoring and defect ...
Ultrasonic Characterization and Inspection of Open Cell Foams
Publisher: American Society of Civil Engineers
Abstract: The nondestructive characterization of the material properties and the detection of hidden discontinuities in a highly porous, open cell, carbon foam using ultrasonics are presented. The propagation of ultrasonic waves in ...
Field Test Performance of Noncontact Ultrasonic Rail Inspection System
Publisher: American Society of Civil Engineers
Isogeometric Fatigue Damage Prediction in Large Scale Composite Structures Driven by Dynamic Sensor Data
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, we combine recent developments in modeling of fatiguedamage, isogeometric analysis (IGA) of thinshell structures, and structural health monitoring (SHM) to develop a computational steering framework for ...
Acoustic Emission Damage Assessment of Steel/CFRP Bonds for Rehabilitation
Publisher: American Society of Civil Engineers
Abstract: The use of adhesively bonded carbon fiber reinforced polymer (CFRP) laminates is increasingly being considered for the rehabilitation of metallic structures. The effective structural monitoring of steel/CFRP adhesive joints ...
Detection of Initial Yield and Onset of Failure in Bonded Posttensioned Concrete Beams
Publisher: American Society of Civil Engineers
Abstract: This paper discusses monitoring of bonded posttensioned (PT) concrete elements using the acoustic emission technique. In particular, a statistical pattern recognition technique based on a multivariate outlier analysis is ...