Results 21 to 30 of about 63,195 (336)

Air-Coupled Ultrasonic Detection of Surface Roughening and Ink Wettability [PDF]

Sensors
In the field of traditional aging state evaluation of paper materials, traditional detection technologies such as ink drop method and chemical analysis have inherent limitations including sample damage, strong subjectivity, and inability to realize large-
Guangya Li
doaj   +2 more sources

Assessment of cumulative damage by using ultrasonic C-scan on carbon fiber/epoxy composites under thermal cycling [PDF]

Materials Research, 2012
In recent years, structural composites manufactured by carbon fiber/epoxy laminates have been employed in large scale in aircraft industries. These structures require high strength under severe temperature changes of -56° until 80 °C.
Marcos Yutaka Shiino, Maria Candida Magalhães Faria, Edson Cocchieri Botelho, Pedro Carlos de Oliveira   +3 more
doaj   +2 more sources

Automated image stitching of ultrasonic C-scan thickness data

NDT & E International
Alexandru Nichita, Yifeng Zhang, Frederic Cegla   +2 more
  +4 more sources

Multi-mode ultrasonic visualization of porosity in composites using a focused transducer with high sensitivity and near-surface resolution

Composites Part C: Open Access, 2021
Porosity ranging from 0.15% to 2.33% in carbon fiber-reinforced polymer composites (CFRPs) is detected and characterized by multi-mode visualizations including ultrasonic A-Scan, B-Scan, C-Scan and Tomography-Scan using a focused ultrasonic transducer ...
Junwei Shi, Songping Liu, Feifei Liu, Guoli Xun   +3 more
doaj   +1 more source

Detectable Depth of Copper, Steel, and Aluminum Alloy Plates with Pulse-Echo Laser Ultrasonic Propagation Imaging System

Metals, 2021
Pulse-echo laser ultrasonic propagation imaging is a nondestructive testing technique developed for composite materials and aluminum alloys used in aerospace.
Dong-Il Kim, Ku-Rak Jung, Yoon-Soo Jung, Jae-Yeol Kim   +3 more
doaj   +1 more source

Delamination defects testing and evaluation of composite laminates using phased array ultrasonic technique

Cailiao gongcheng, 2021
Composite materials are prone to delamination defects during the preparation process. For the non-destructive testing and evaluation of carbon fiber reinforced polymer (CFRP) delamination defects, a standard specimen with embedded delamination defects ...
CAO Hong-yi, MA Meng-yuan, DING Guo-qiang, JIANG Ming-shun, SUN Lin, ZHANG Lei, JIA Lei, TIAN Ai-qin, LIANG Jian-ying   +8 more
doaj   +1 more source

A study on the inclusion sizing using immersion ultrasonic C-scan imaging [PDF]

Journal of Physics: Conference Series, 2017
D Chen, H F Xiao, M Li, J W Xu
openaire   +2 more sources

Numerical simulations in support of the design of an ultrasonic device for sub-assembly identification [PDF]

EPJ Web of Conferences, 2021
In this paper, it is shown how numerical simulations can help designing an ultrasonic instrument operating in harsh conditions. To prevent fuel handling errors in sodium cooled fast reactors, the identification of fuel sub-assemblies using ultrasound is ...
Paumel Kevin, Maurel Tom, Lhuillier Christian   +2 more
doaj   +1 more source

Ultrasonic characterization of defective porcelain tiles

Boletín de la Sociedad Española de Cerámica y Vidrio, 2012
The aim of this work is the optimization of ultrasonic methods in the non-destructive testing of sintered porcelain tiles containing defects. For this reason, a silicon nitride ball, carbon black and PMMA (Polymethylmethacrylate) were imbedded in ...
Eren, E., Kurama, S., Janssen, R.
doaj   +1 more source

Intelligent damage recognition of composite materials based on deep learning and ultrasonic testing

AIP Advances, 2021
Ultrasonic non-destructive testing can effectively detect damage in aircraft composite materials, but traditional manual testing is time-consuming and labor-intensive.
Caizhi Li, Weifeng He, Xiangfan Nie, Xiaolong Wei, Hanyi Guo, Xin Wu, Haojun Xu, Tiejun Zhang, Xinyu Liu   +8 more
doaj   +1 more source