Results 31 to 40 of about 279,309 (306)

The MFL technique – Basic application for PT cable break detection in concrete structures

MATEC Web of Conferences, 2018
From the beginning of building techniques creating pre-stressed and accordingly post-tensioned concrete structures until the late 1980ies manufacturers and construction companies dealt with pre-stressing steel material vulnerable to stress corrosion ...
Wilcke Martin, Walther Andrei, Szielasko Klaus, Youssef Sargon   +3 more
doaj   +1 more source

System of Non-Destructive Testing [PDF]

Interdisciplinary Description of Complex Systems : INDECS, 2009
In this paper the initial analysis of NDT laboratory is presented by means of agent-based modelling. For the purpose of analysis, laboratory is taken into account as a complex system consisting of three agents; equipment, personnel and specimens. Interaction between the agents is circular.
Morana Lisièar, Damir Markuèiè, Branimir Èaèe   +2 more
openaire   +3 more sources

Secondary Interface Echoes Suppression for Immersion Ultrasonic Imaging Based on Phase Circular Statistics Vector

Sensors, 2023
Immersion ultrasonic phased array imaging technology offers great advantages, particularly in coupling and automatic detection of industrial non-destructive testing (NDT).
Ming Chen, Zhenghui Xiong, Yan Jing, Xi He, Qingru Kong, Yao Chen   +5 more
doaj   +1 more source

A Localized Analysis of the Sterilization Process by Direct Steam Monitoring

IEEE Access, 2017
Steam sterilization is a standard tool in the field of healthcare and medical equipment as it is economical, effective, and reliable. Considering the increase of antibiotic resistance and the challenge in sterilizing narrow tubes used for keyhole surgery,
Elisabeth Leiss-Holzinger, Karoline Felbermayer, Dzenan Ismic, Christian Rankl, Johannes Hillmann, Markus Brandstetter   +5 more
doaj   +1 more source

Phased Array Ultrasonic Sector Scan Imaging of Helicopter Damper Bolts Based on Vector Coherence Factor

Applied Sciences, 2022
Non-destructive testing of the cracks on the in-service bolt’s shank with size M18 is a challenging technical problem. Due to the weak echo energy of cracks with large buried depths, the conventional phased array ultrasonic sector scan imaging has a low ...
Jingxing Huang, Ming Chen, Qingru Kong, Liangzhong Xiao, Chao Lu, Yao Chen   +5 more
doaj   +1 more source

Effects of cellulose nanofibers on flexural behavior of carbon-fiber-reinforced polymer composites with delamination

Science and Engineering of Composite Materials, 2023
Understanding the influence of delamination defects on the damage evolution behavior of carbon-fiber-reinforced polymers (CFRPs) is crucial to improve their engineering applications. This study examined the flexural damage behaviors of CFRP composites by
Liu Ran, Shen Gongtian, Zhang Pengfei, Yang Sa, Zhou Wei, Ye Chao, Li Qing   +6 more
doaj   +1 more source

Breaking the resolution limit in photoacoustic imaging using non-negativity and sparsity

Photoacoustics, 2020
The spatial resolution achievable in photoacoustic imaging decreases with the imaging depth, resulting in blurred images for deeper structures. Apart from technical limitations, the ultimate resolution limit results from the second law of thermodynamics.
P. Burgholzer, J. Bauer-Marschallinger, M Haltmeier   +2 more
doaj   +1 more source

A comparative study of the elasto-plastic properties for ceramic nanocomposites filled by graphene or graphene oxide nanoplates

Nanotechnology Reviews, 2022
As nanoscale reinforcements, the graphene and graphene oxide nanoplates exhibit distinct mechanical and physical properties. The determination of the effective elasto-plastic behavior of nanoplate/ceramic nanocomposites and the different filling effects ...
Ma Lian-Hua, Zhang Kun, Pan Xiao-Dong, Zhou Wei   +3 more
doaj   +1 more source

Non-Destructive Evaluation of Hidden Defects Beneath the Multilayer Organic Protective Coatings Based on Terahertz Technology

Frontiers in Physics, 2021
An organic protective coating system plays an important role for the corrosion protection of offshore metallic structures. It is of practical importance to detect possible coating defects and evaluate coating performance for corrosion degradation ...
Wanli Tu, Shuncong Zhong, Manting Luo, Qiukun Zhang   +3 more
doaj   +1 more source

Parallel double-plate capacitive proximity sensor modelling based on effective theory

AIP Advances, 2014
A semi-analytical model for a double-plate capacitive proximity sensor is presented according to the effective theory. Three physical models are established to derive the final equation of the sensor. Measured data are used to determine the coefficients.
Nan Li, Haiye Zhu, Wenyu Wang, Yu Gong
doaj   +1 more source