Results 261 to 270 of about 20,397,556 (300)

Experimental ESD method for restoration of blurry image in ultrasonic C-Scan

2010 International Conference on Mechanic Automation and Control Engineering, 2010
A 2-D Deconvolution method for the improvement of ultrasonic defocused C-scan images is presented by using experimental Edge Spread Distribution (ESD) of transducer. In the paper, experiments corresponding different imaging depth were implemented to establish a relation of the ESD and blurry C-scan images.
null Tao Kong, null Chunguang Xu, null Dingguo Xiao   +2 more
openaire   +1 more source

A clustering-based damage segmentation for ultrasonic C-Scans of CFRP plates

2015 IEEE International Ultrasonics Symposium (IUS), 2015
Despite their desirable mechanical properties, damage propagation in carbon fiber-reinforced polymers (CFRP) due to manufacturing flaws and continued use may particularly be hard to assess. In this work, damage maps are generated to identify the health state of a CFRP plate from ultrasonic signals obtained under C-Scan mode.
Antonio Rodriguez-Hidalgo, Angel M. Gomez, Nicolas Bochud, Juan M. Soto, Antonio M. Peinado   +4 more
openaire   +1 more source

Fiber orientation study using ultrasonic C-scan of ply interfaces

AIP Conference Proceedings, 2002
A new method for direct mapping of ply orientations in composite laminates is presented. The method employs normal incidence ultrasound to scan ply interfaces and produce C-scan images that contain primarily the fiber orientation information of local plies.
openaire   +1 more source

Ultrasonic C-Scan Inspection Of Composite Materials

2009
Ultrasonic technique using an automated C-scan has been established as the primary inspection method for composite materials. In this paper, the principles of ultrasonic inspection, the type of defects that may be generated during fabrication and/or during service of fibre-reinforced composites and their detection using ultrasonic techniques are ...
openaire   +1 more source

Microstructure Characterization of Cancellous Bone Based on Ultrasonic C-Scan Imaging

2017
Ultrasonic backscatter signals can reflect the microstructural information of cancellous bone. The goal of this study is to characterize the microstructure of cancellous bone in the mesoscale and estimate trabecular thickness (Tb.Th), trabecular bone separation (Tb.Sp), bone volume fraction (BV/TV) and structure model index (SMI) based on ultrasonic C ...
Ying Li, Chengcheng Liu, Feng Xu, Dean Ta   +3 more
openaire   +1 more source

Improving Ultrasonic C-Scan Resolution Using the Hilbert-Huang Transform

AIP Conference Proceedings, 2005
The Hilbert Huang Transform (HHT) is applied to ultrasonic mapping of simulated defects in an aluminum plate. C‐Scanning tests are conducted using pulse‐echo ultrasound on a water‐immersed aluminum plate containing a matrix of 16 unevenly‐spaced flat‐bottomed holes.
openaire   +1 more source

High Resolution, High Sensitivity Ultrasonic C-Scan Imaging System

1977
A particular goal of much of the research in ultrasonic imaging is the development of systems that can image a volume inside the body with high resolution in all dimensions.
openaire   +1 more source

The ultrasonic C-Scan technique for damage evaluation of GFRP composite materials [PDF]

, 2016
We show experimental results obtained by an innovative non-destructive approach for the characterization of the damage of composite materials. The analysis regard an aeronautical rotor made of glass fiber–reinforced composite material, and is developed by applying an ultrasonic immersion C-Scan technique.
Castellano, Anna, Foti, Pilade, Fraddosio, Aguinaldo, Marzano, Salvatore, Piccioni, Mario Daniele   +4 more
openaire  

Generative Adversarial Network With Object Detector Discriminator for Enhanced Defect Detection on Ultrasonic B-Scans

Neurocomputing, 2021
Marko Subašić, Sven Lončarić, Marko Budimir   +2 more
exaly  

Some developments in ultrasonic C-scanning of composites

NDT & E International, 1994
openaire   +1 more source