Results 1 to 10 of about 39,338 (264)

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

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

Ultrasonic Non-Destructive Testing and Evaluation of Stainless-Steel Resistance Spot Welding Based on Spiral C-Scan Technique

Sensors
In order to achieve the non-destructive testing and quality evaluation of stainless-steel resistance spot welding (RSW) joints, a portable ultrasonic spiral C-scan testing instrument was developed based on the principle of ultrasonic pulse reflection.
Liang Yang, Rongyan Chuai, Guixi Cai, Dan Xue, Jingming Li, Kunlin Liu, Chang Liu   +6 more
exaly   +3 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

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   +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

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

Evaluation of quantitative ultrasonic C-scan testing for refill friction stir spot welding joints based on time-frequency analysis

Materials Research Express, 2023
This paper focuses on a comparative study of different ultrasonic feature-based C-scan testing imaging methods for characterizing refill friction stir spot welding (RFSSW) joints, and accurately identifying and measuring the nugget boundary.
Hua Zhong, Guocheng Xu, Juan Dong, Guanghao Zhou, Yuting Lin, Qiuyue Fan, Xiaopeng Gu   +6 more
doaj   +1 more source