Results 101 to 110 of about 20,397,556 (300)

Ultrasonic Flaw Detector for Non-destructive Evaluation

, 2021
Ultrasonic Flaw Detector inspects materials non-destructively for surface and internal defects. It is applicable on testing various materials such as composites, metals and welded joints.The flaw detector provides pulse-echo A-scan, B-scan, C-scan, L ...

core  

Inverse Kinematic Analysis and Evaluation of a Robot for Nondestructive Testing Application

Journal of Robotics, 2015
The robot system has been utilized in the nondestructive testing field in recent years. However, only a few studies have focused on the application of ultrasonic testing for complex work pieces with the robot system. The inverse kinematics problem of the
Zongxing Lu, Chunguang Xu, Qinxue Pan, Xinyu Zhao, Xinliang Li   +4 more
doaj   +1 more source

Deciphering the Photopolymerization‐Induced Nanostructures and Interface Formation for Submicrometer Additive Manufacturing

Advanced Functional Materials, EarlyView.
This work reveals the UV‐curing‐induced monomer‐rich domain, oligomer‐rich domain, and entangled oligomer domain. The cured submicron films in stressed state induce interlayer nano‐wrinkle structures during the deposition of the second layer. Stress‐free cured films in relaxed state form non‐diffusive, diffusive and semi‐diffusive interlayer ...
Shouzheng Chen, Yufeng Zhai, Jungui Zhou, Lixing Li, Simon Schraad, Guangjiu Pan, Xuehe Jiang, Sarathlal Koyiloth Vayalil, Rolf A. T. M. van Benthem, Julien R. G. Navarro, Johan F. G. A. Jansen, Mats K. G. Johansson, Peter Müller‐Buschbaum, Stephan V. Roth   +13 more
wiley   +1 more source

Structure‐Property Relationships in Catecholamine Coatings for Broad Surface Functionalization

Advanced Functional Materials, EarlyView.
Inspired by mussel adhesive proteins (MAPs), six catecholamine molecules with different molecular structure were systematically characterized and compared based on their ability to form homogeneous, reactive coatings. Highlighting candidates capable of balancing coating properties of interest, their successful use as primer layers for organic and ...
Caroline F. Harms, Qiming Li, Ye‐Sol Kim, Anish Tuteja, Jinsang Kim, Abdon Pena‐Francesch   +5 more
wiley   +1 more source

Characterization of C/Enhanced SiC Composite During Creep-Rupture Tests Using an Ultrasonic Guided Wave Scan System

, 2004
An ultrasonic guided wave scan system was used to nondestructively monitor damage over time and position in a C/enhanced SiC sample that was creep tested to failure at 1200 C in air at a stress of 69 MPa (10 ksi).
Verrilli, Michael J., Martin, Richard E., Cosgriff, Laura M., Roth, Don J.   +3 more
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Development of Ultrasonic Automatic Testing System for Flaws of Rotary Parts

, 2011
In order to conquer the disadvantages of undetection, misjudgment and low-efficiency in ultrasonic A-scan testing for rotary parts, an ultrasonic automatic imaging system was developed, and automatic scan device was specially designed for rotary parts ...
Ming Dong, Yuan Chen, Qing Hua Mao, Hong Wei Ma   +3 more
core   +1 more source

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

Advanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou, Viktor Rehm, Zijian Peng, Tomáš Hrbek, Anastasia Barabash, Christoph J. Brabec, Berke Özyalin, Yufei Han, Johannes Böhmer, Johannes Will, Erdmann Spiecker, Klaus Götz, Tobias Unruh, Jędrzej Korczak, Tomasz Story, Felix Hilpert, Olaf Brummel, Jörg Libuda, Iva Matolínová, Wolfgang Heiss   +19 more
wiley   +1 more source

Reaction‐Time pH Stabilization by Poly(acrylic acid) with Ethanol‐Mediated Growth Control for Efficient Hydrothermal Sb2(S,Se)3 Solar Cells

Advanced Functional Materials, EarlyView.
Poly(acrylic acid) acts as a reaction‐time pH buffer during hydrothermal Sb2(S,Se)3 growth through its COOH/COO‐ equilibrium. When combined with ethanol‐regulated growth, this buffering strategy reduces Sb‐O related surface disorder, improves local electronic uniformity and carrier collection, and increases the champion solar‐cell efficiency to 10.25%,
Juhee Lee, Geumha Lim, Wookyung Jeon, Seongju Park, Jinwoo Chu, Yohan Yoon, William Jo, Byungha Shin   +7 more
wiley   +1 more source

Characterization of Ultrasonic Focused Transducers Using Axial Scans and C-Scans

, 1997
In the ultrasonic community there is a growing use of models to simulate inspection processes [1,2]. One necessary input to such models is knowledge of the transducer’s radiation pattern. The radiation pattern of a commercial transducer often approximates that of an ideal, focused, piston transducer with appropriately chosen parameters (element ...
Yalda, I., Panetta, P., Margetan, Frank, Thompson, R. Bruce   +3 more
openaire   +3 more sources

In-Plane Deformation Measurements Using Digital Image Correlation of Ultrasonic C-Scan Images

, 2003
The extension of digital image correlation method to ultrasonic C-scan acoustical speckle images of the bulk is presented in this paper. The approach discussed in this paper is ideally suited to composite materials such as particulate composites, fiber ...
Regez, Bradley, Chu, Tsuchin, Zhang, Ying, Mahajan, Ajay, Tsuchin Chu, Ajay Mahajan, Ying Zhang, Brad Regez   +7 more
core   +1 more source