Results 81 to 90 of about 33,881 (247)

Robotized Inspection of Vertical Structures of a Solar Power Plant Using NDT Techniques

Robotics, 2015
Concentrated solar power (CSP) plants are expansive facilities that require substantial inspection and maintenance. A fully automated inspection robot increases the efficiency of maintenance work, reduces operating and maintenance costs, and improves ...
Torsten Felsch, Gunnar Strauss, Carmen Perez, José M. Rego, Iñaki Maurtua, Loreto Susperregi, Jorge R. Rodríguez   +6 more
doaj   +1 more source

Recent advances in the ultrasonic polar scan method for characterizing (degraded) fiber reinforced plastics [PDF]

, 2015
The ultrasonic polar scan (UPS) technique originated in the 1980's as a sophisticated method for inspecting composites. However, it is only in recent times that the true capabilities and strengths of the UPS methodology have been evidenced through ...
Degrieck, Joris, Delrue, Steven, Kersemans, Mathias, Martens, Arvid, Van Den Abeele, Koen, Van Paepegem, Wim   +5 more
core   +2 more sources

Diagnostic Accuracy of Dentin Sclerosis by Optical Coherence Tomography and the North Carolina Index in Noncarious Cervical Lesions

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To evaluate the diagnostic accuracy of optical coherence tomography (OCT) and the North Carolina Index (NCI) for identifying dentin type (sclerotic vs. nonsclerotic) in natural noncarious cervical lesions (NCCLs). Materials and Methods Thirty extracted human premolars with 30 NCCLs (90 regions of interest) were analyzed. Two blinded,
Nathalie Murielly Rolim de Abreu, Rudyard dos Santos Oliveira, Anauara Lima e Silva, Laryssa Mylenna Madruga Barbosa, Alessandro Dourado Loguercio, Frederico Barbosa de Sousa   +5 more
wiley   +1 more source

Nondestructive inspection of surface nanostructuring using label-free optical super-resolution imaging. [PDF]

Sci Rep, 2023
Aguilar A, Khalil AA, Aldeiturriaga DP, Sedao X, Mauclair C, Bon P.   +5 more
europepmc   +1 more source

Leveraging modified ex situ tomography data for segmentation of in situ synchrotron X‐ray computed tomography

Journal of Microscopy, EarlyView.
Abstract In situ synchrotron X‐ray computed tomography enables dynamic material studies. However, automated segmentation remains challenging due to complex imaging artefacts – like ring and cupping effects – and limited training data. We present a methodology for deep learning‐based segmentation by transforming high‐quality ex situ laboratory data to ...
Tristan Manchester, Adam Anders, Julio Spadotto, Hannah Eccleston, William Beavan, Hugues Arcis, Brian J. Connolly   +6 more
wiley   +1 more source

Machine Learning and 3D Reconstruction of Materials Surface for Nondestructive Inspection. [PDF]

Sensors (Basel), 2022
Kartashov OO, Chernov AV, Alexandrov AA, Polyanichenko DS, Ierusalimov VS, Petrov SA, Butakova MA.   +6 more
europepmc   +1 more source

Saturn S-2 quality assurance techniques: Nondestructive testing processes. Volume 1: Requirements and procedures [PDF]

The methods and procedures used to perform nondestructive testing inspections of the Saturn S-2 liquid hydrogen and liquid oxygen tank weldments during fabrication and after proof testing are described to document special skills developed during the ...
Eller, H. H., Sugg, F. E.
core   +1 more source

Autonomous robotic system for thermographic detection of defects in upper layers of carbon fiber reinforced polymers [PDF]

, 2015
Carbon Fiber Reinforced Polymers (CFRPs) are composites whose interesting properties, like high strength-to-weight ratio and rigidity, are of interest in many industrial fields.
Antonello, Morris, Ghidoni, Stefano, Menegatti, Emanuele   +2 more
core   +1 more source

Trueness of the apical and middle root portion segments of 3D‐printed removable die and alveolar cast designs manufactured using stereolithographic 3D printing

Journal of Prosthodontics, EarlyView.
Abstract Purpose The present study evaluated the effects of the root portion design, segment (middle vs. apical), and part (die vs. cast) on the trueness of three‐dimensional (3D)‐printed removable die‐cast complex. Material and Methods The trueness of apical and middle segments of the root portion of 45 3D‐printed removable dies and casts with three ...
Francisco X. Azpiazu‐Flores, William M. Johnston, Dean Morton, Wei‐Shao Lin, Burak Yilmaz   +4 more
wiley   +1 more source

New camera tube improves ultrasonic inspection system [PDF]

, 1968
Electron multiplier, incorporated into the camera tube of an ultrasonic imaging system, improves resolution, effectively shields low level circuits, and provides a high level signal input to the television camera.
Berger, H., Collis, W. J., Jacobs, J. E.
core   +1 more source