Results 51 to 60 of about 514,588 (251)

Occluded Grape Cluster Detection and Vine Canopy Visualisation Using an Ultrasonic Phased Array

open access: yesSensors, 2021
Grape yield estimation has traditionally been performed using manual techniques. However, these tend to be labour intensive and can be inaccurate. Computer vision techniques have therefore been developed for automated grape yield estimation.
Baden Parr   +3 more
doaj   +1 more source

Ultrasonic scanning system for in-place inspection of brazed tube joints [PDF]

open access: yes, 1973
A miniaturized ultrasonic scanning system for nondestructive in-place, non-immersion testing of brazed joints in stainless-steel tubing is described. The system is capable of scanning brazed tube joints, with limited clearance access, in 1/4 through 5/8 ...
Haralson, H. S.   +2 more
core   +1 more source

Synthetic aperture guided wave imaging using a mobile sensor platform [PDF]

open access: yes, 2012
This oral session at conference looks at synthetic aperture guided wave imaging using a mobile sensor ...
Dobie, Gordon   +4 more
core   +1 more source

The use of the protocol of preoperative neck examinationin patients with possible thyroid cancer in an oncologist's practice

open access: yesКлиническая и экспериментальная тиреоидология, 2012
The purpose of the article is development, introduction into clinical practice and potency assignment of the protocol of preoperative thyroid and regional efflux of lymph examination and a new method of ultrasonic cervical glands assessment as well as ...

doaj   +1 more source

Biomedical ultrasonoscope [PDF]

open access: yes, 1979
The combination of a "C" mode scan electronics in a portable, battery powered biomedical ultrasonoscope having "A" and "M" mode scan electronics, the latter including a clock generator for generating clock pulses, a cathode ray tube having X, Y and Z ...
Lee, R. D.
core   +1 more source

Miniature mobile sensor platforms for condition monitoring of structures [PDF]

open access: yes, 2009
In this paper, a wireless, multisensor inspection system for nondestructive evaluation (NDE) of materials is described. The sensor configuration enables two inspection modes-magnetic (flux leakage and eddy current) and noncontact ultrasound.
Chan, C.C.   +6 more
core   +1 more source

High Precision Detection Method for Delamination Defects in Carbon Fiber Composite Laminates Based on Ultrasonic Technique and Signal Correlation Algorithm

open access: yesMaterials, 2020
This paper presents a method based on signal correlation to detect delamination defects of widely used carbon fiber reinforced plastic with high precision and a convenient process.
M. Ma   +9 more
semanticscholar   +1 more source

Nondestructive characterization of the elastic properties of orthotropic composites with ultrasound [PDF]

open access: yes, 2011
Due to the increasing use of composite materials in critical applications demanding light weight to high strength ratio, reliable evaluation tools are necessary.
Degrieck, Joris   +5 more
core  

Perception SoC Based on an Ultrasonic Array of Sensors: Efficient DSP Core Implementation and Subsequent Experimental Results

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We are concerned with the design, implementation, and validation of a perception SoC based on an ultrasonic array of sensors. The proposed SoC is dedicated to ultrasonic echography applications.
Boukadoum M, Haidar A, Kassem A, Sawan M
doaj   +1 more source

Investigation to local defect resonance for non-destructive testing of composites [PDF]

open access: yes, 2018
Local defect resonance (LDR) makes use of high frequency vibrations to get a localized resonant activation of a defective region. In this study, the LDR behavior of carbon fiber reinforced polymer (CFRP) coupons with three different types of damages is ...
Calderon Tellez, Javier Andres   +5 more
core   +1 more source

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