Many sparse signal representation (SSR) algorithms have been developed in the past
decade. The advantages of SSR such as compact representations and super resolution lead …

Terahertz (THz) time-domain detection has emerged as a promising tool for nondestructive
testing due to its superior detection accuracy and sensitivity for both interfaces and internal …

Errors in the measurements of pipeline nondestructive tools may lead to faulty decisions
causing economic and environmental loss, or system failures. Calibration models are an …

Noise suppression of an echo signal plays an important role in high-frequency ultrasonic
testing of flip chips. This paper proposes an orthogonal matching pursuit (OMP) method …

With the wide application of composite materials in various fields, efficient and reliable non-
destructive testing technology has been developed in a general manner. Due to the …

Multilayer structures have been widely used in industrial fields, and non-destructive
evaluation of these structures is of great importance to assure their quality and performance …

Pulse-echo ultrasound testing is the most prevalent method for inspection of composite
materials in industry although evolving designs combined with the anisotropic nature of …

The damage of aircraft cables is a major issue in the aerospace industry, which usually
starts from insulation layer defect and can lead to serious casualties and financial losses. In …

Defect classification is an important issue in ultrasonic non-destructive evaluation. A layered
multi-class support vector machine (LMSVM) classification system, which combines multiple …

Abstract The field of Compressive Sensing (CS) has provided algorithms to reconstruct
signals from a much lower number of measurements than specified by the Nyquist-Shannon …