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Nonlinear Ultrasonic C-Scan Imaging for Contact-Type Defects in Diffusion-Bonded Joints-A Case Study. [PDF]

Materials (Basel)
Diffusion bonding technology is widely used in the connection of precision components, yet accurately and reliably detecting contact-type defects on the bond interface still remains a significant problem.
Zhang C, Pan Q, Liu T, Zhang L, Gang T.
europepmc   +2 more sources

Accuracy Assessment of Ultrasonic C-scan and X-ray Radiography Methods for Impact Damage Detection in Glass Fiber Reinforced Polyester Composites [PDF]

Journal of Applied and Computational Mechanics, 2019
The present study introduces two quantitative parameters to compare the accuracy of ultrasonic C-scan testing and X-ray radiography methods in the damaged area detection under low-velocity impact in polymer-based composites.
Seyyed Abbas Arhamnamazi, Nasrollah Bani Mostafa Arab, Amir Refahi Oskouei, Francesco Aymerich   +3 more
doaj   +2 more sources

Engineering-Oriented Ultrasonic Decoding: An End-to-End Deep Learning Framework for Metal Grain Size Distribution Characterization [PDF]

Sensors
Grain size is critical for metallic material performance, yet conventional ultrasonic methods rely on strong model assumptions and exhibit limited adaptability. We propose a deep learning architecture that uses multimodal ultrasonic features with spatial
Le Dai, Shiyuan Zhou, Yuhan Cheng, Lin Wang, Yuxuan Zhang, Heng Zhi   +5 more
doaj   +2 more sources

Application of Ultrasonic C-Scan Techniques for Tracing Defects in Laminated Composite Materials

Strojniški vestnik – Journal of Mechanical Engineering, 2011
In this paper practical ultrasonic C-scan techniques for NDT of laminated composite materials are developed and applied, with an aim to trace specific artificial defects. Two types of materials are examined; an advanced carbon/epoxy system and a typical marine type glass/polyester system.
Badogiannis, Efstratios, Hasiotis, Theodoros, Tsouvalis, Nicolaos Georgios   +2 more
openaire   +3 more sources

Defect Detection in Wood Using Air-Coupled Ultrasonic Technique Based on Golay Code [PDF]

Sensors
Air-coupled ultrasound overcomes the limitations of traditional contact-based ultrasonic methods that rely on liquid couplants. Still, it faces challenges due to the acoustic impedance mismatch between air and wood, causing significant signal scattering ...
Jun Wang, Tianyou Xu, Hongyan Zou
doaj   +2 more sources

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

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

Comparison of X-ray Computed Tomography and Ultrasonic C-Scan Techniques and Numerical Modelling of Impact Damage in a CFRP Composite Laminate

Applied Composite Materials, 2023
Two different experimental techniques are employed to visualize the impact damage generated by a low-velocity impact on a carbon-fibre reinforced-polymer (CFRP) composite laminate. At the relatively low impact-velocity of 1.69 m.s^−1, and a corresponding
E. Evans, R. Brooks, J. Liu, Z. Hall, H. Liu, T. Lowe, P. Withers, A. Kinloch, J. Dear   +8 more
semanticscholar   +1 more source

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