Results 11 to 20 of about 514,588 (251)
A scanning acoustic microscope based on picosecond ultrasonics [PDF]
Ultrasonics, 2015 We report on the development of a new type of scanning acoustic microscope. We use a femtosecond light pulse to generate a short sound pulse, and then focus this sound onto the sample by means of a specially designed and microfabricated acoustic lens of radius a few microns. The sound travels to the sample through a thin layer of water.
S, Che +3 more
openaire +2 more sources
Generative adversarial network with object detector discriminator for enhanced defect detection on ultrasonic B-scans [PDF]
Neurocomputing, 2021 Non-destructive testing is a set of techniques for defect detection in materials. While the set of imaging techniques are manifold, ultrasonic imaging is the one used the most.
Luka Posilovi'c +4 more
semanticscholar +1 more source
Sensors, 2021 The anisotropy and inhomogeneity exhibited by austenitic steel in welds poses a challenge to nondestructive testing employing ultrasonic waves, which is predominantly utilized for the inspection of welds in power plants.
YoungLae Kim, Sungjong Cho, Ik Keun Park
doaj +1 more source
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 +8 more
doaj +1 more source
Materials, 2022 This paper presents results of ultrasonic non-destructive testing of carbon fibre-reinforced plastics (CFRPs) and glass-fibre reinforced plastics (GFRPs).
K. Ciecieląg +5 more
semanticscholar +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
e-Journal of Nondestructive Testing, 2023 This paper deals with the operating principle of a multi-NDT test bench aimed at automatically test wind turbine blade sections. This bench uses two NDT methods, infrared thermography (IRT) which is a global method and phased array ultrasonic testing ...
Jules Recolin +3 more
doaj +1 more source
Studies on mechanical behavior of glass epoxy composites with induced defects and correlations with NDT characterization parameters [PDF]
, 2007 Degradation in mechanical properties (compression, flexural and ILS) of glass epoxy composite laminates with induced defects (simulating delaminations) was studied. The defects were characterized by using the A-scan ultrasonic pulse-echo technique.
Kumar, C Rahul +4 more
core +1 more source
Journal of Physics: Conference Series, 2018 This article displays a general overview about the measurements of acoustical properties (speed of sound and attenuation) for both the fluids and solid materials via dealing with A-scan or A-mode GAMPT mbH ultrasound technique (ultrasound transmission ...
A. Oglat +6 more
semanticscholar +1 more source
Automated defect detection for ultrasonic inspection of CFRP aircraft components
, 2021 An automated task sequence based on the commercial software Ultis® combined with new pre- and post-processing tools was developed to achieve a fully automated analysis of ultrasonic data obtained from large and complex CFRP components.
Loïc Seguin-Charbonneau +5 more
semanticscholar +1 more source