Results 181 to 190 of about 6,236,215 (252)

Fatigue damage characterization for composite laminates using deep learning and laser ultrasonic

Composites Part B: Engineering, 2021
In this work, we propose a novel deep learning (DL) approach to directly process and characterize the guided wave information measured from an interrupted tensile-tensile fatigue test on fiber-reinforced polymer (FRP) laminates using laser ultrasonic ...
C. Tao, Chao Zhang, H. Ji, J. Qiu
semanticscholar   +1 more source

Nonlinear ultrasonic testing and data analytics for damage characterization: A review

Measurement, 2021
Nondestructive testing and evaluation (NDTE even at the microscopic levels. Furthermore, the nonlinear characteristics of ultrasonic waves can be correlated to several material properties.
Hongguang Yun, Rakiba Rayhana, S. Pant, M. Genest, Zheng Liu   +4 more
semanticscholar   +1 more source

Damage characterization of reinforced concrete beams under different failure modes using acoustic emission

, 2021
Recently, a lot of studies have focused on the crack classification and damage characterization in concrete specimens combining acoustic emission (AE) monitoring with the mechanical testing.
P. Prem, Mohit Verma, P. Ambily
semanticscholar   +1 more source

Damage characterization using CNN and SAE of broadband Lamb waves.

Ultrasonics, 2021
The method based on Lamb wave shows great potential for structural health monitoring (SHM) and nondestructive testing (NDT). Deep learning algorithms including convolutional neural networks (CNN) and stack autoencoder (SAE) are promising to extract ...
Fei Gao, J. Hua
semanticscholar   +1 more source

A new stress-damage-flow coupling model and the damage characterization of raw coal under loading and unloading conditions

, 2021
Coalbed methane, as a gas in coal seam, is a kind of potential clean energy with high reserves. At present, there are two main types of coalbed methane extraction in China, one is extracting coalbed methane by ground drilling, the other is coal and gas ...
Changbao Jiang, Yang Yang, Wenhui Wei, M. Duan, T. Yu   +4 more
semanticscholar   +1 more source

Characterizing Oxidatively Damaged Cotton Fabrics

Textile Research Journal, 1994
Treating cotton fabrics with electrogenerated oxygen at a Pt anode provides a lab oratory method for simulating the "catalytic damage" phenomenon. Samples of cotton voile were treated in this manner using different current and temperature conditions to damage the fabric. Diffuse reflectance infrared spectra of a series of these samples treated at 80°C
S. Kokot, M. Jermini
openaire   +2 more sources

Characterization of Damaged Skin by Impedance Spectroscopy: Mechanical Damage

Pharmaceutical Research, 2013
Electrochemical impedance spectroscopy is a convenient method that has been used to characterize skin barrier function, which affects drug delivery into and through the skin. The objective of this study was to relate changes in skin barrier function arising from mechanical damage to changes in the impedance spectra. These observations are compared in a
Erick A, White, Mark E, Orazem, Annette L, Bunge   +2 more
openaire   +2 more sources

Quantitative characterization of damage-aggravation effect caused by progressive damage

Acta Mechanica Sinica, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lin, Qindong, Li, Shihai, Feng, Chun, Zhou, Dong   +3 more
openaire   +2 more sources

WITHDRAWN: Ultrasonic characterization of formation damage

Ultrasonics, 2002
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
M A, Khan, H, Menourab, A A, Al-Majed, S Z, Jilani, A H, Mohammed   +4 more
openaire   +2 more sources

Damage mechanism characterization in composite damage tolerance investigations

Composite Structures, 1993
Abstract The investigation of damage tolerance of composite materials comprises a spectrum of topics. A review of research in the area of damage tolerance critically exposes the need to identify basic damage mechanisms in order to develop more damage-tolerant materials and structures.
Derek Hull, Yi Bing Shi
openaire   +1 more source