a radioscopic technique to observe

US6038467A

The surgeon can thus observe the image so as to see where within the patient the instrument is situated and can at the same time keep a view of the patient and possibly also of the instrument. The image display apparatus includes a holder 5 in which the instrument 20 can be fitted.

NDT of welds: how to win quality of results with cost of

That means the time of inspection was reduced by a factor from 12,5 to 25 and consequently the cost is reduced in the same ratio. 6 - CONCLUSIONS The choice of the right NDT technique is becoming more and more stringent to win quality of results with cost of

Application of Radioscopy System into an Automatic Production Line in Automotive Industry

bodies. Aim of here-described tests was to verify (or refute) usage of radioscopic testing system (RS) as a part of production line for real time full examination. 2 Examination background, proposal of RS technique The verification was done on the specimens

Essential Readings in Light Metals, Volume 3, Cast Shop for

A Radioscopic Technique to Observe Bubbles in Liquid Aluminum 201 Molten Aluminium Purification 208 Removal of Hydrogen from Molten Aluminium by Gas Purging 218 Hydrogen Removal 226 A Troughbased Aluminum Treatment Process Part I Metallurgical

The Surface Topography of a Magnetic Fluid

The normal field instability in magnetic liquids is investigated experimentally by means of a radioscopic technique which allows a precise measurement of the surface topography. The dependence of the topography on the magnetic field is compared to results

Application of Radioscopy System into an Automatic Production Line in Automotive Industry

bodies. Aim of here-described tests was to verify (or refute) usage of radioscopic testing system (RS) as a part of production line for real time full examination. 2 Examination background, proposal of RS technique The verification was done on the specimens

Reverse Microfracture of the Hip Acetabulum: A

The long-term efficacy of the treatment of chondral lesions is very important to prevent hip osteoarthritis. Microfracture, autologous chondrocyte transplantation, and direct chondral repair, among others, are techniques that have shown good results in some cases. We propose a technique to treat wave lesions through reverse microfracture, with bubble decompression and adherence of the natural

Method for improving a radiological examination and

1. A process for improving a radiological examination of an area of a body (1 c), this examination being conducted using a radiological device (1), this process being characterised in that, prior to the radiological examination, a two-dimensional radioscopic image is taken, with a single energy for the X-rays used, of the area of the body to be examined and this image is used to determine

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We present an experimental study on the formation and behavior of a liquid metal bubbly flow arising from a downward gas injection through a top submerged lance (TSL). A visualization of the bubble dynamics was achieved by the X-ray radiography combined with high-speed imaging. The experiments were carried out in a parallelepiped container (144 144 12 mm3) using GaInSn, a ternary alloy

Conventional radiofrequency treatment in five patients

Conventional radiofrequency targeted to Gasser's ganglion is carried out under radioscopic control, following the technique described by Sweet (). The patient is placed in supine decubitus, with an initial submental radioscopic projection.

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We present an experimental study on the formation and behavior of a liquid metal bubbly flow arising from a downward gas injection through a top submerged lance (TSL). A visualization of the bubble dynamics was achieved by the X-ray radiography combined with high-speed imaging. The experiments were carried out in a parallelepiped container (144 144 12 mm3) using GaInSn, a ternary alloy

(PDF) Identification of Defective Areas in Composite

Observe how the BEMD operation presents a data-driven framework to compare the temporal where the trend r(t) is purposely omitted, due to its over- scales of z Observe that, now, from (2), the time-dependent amplitude ai (t) and phase function θi (t) can be extracted.

AN ASSESSMENT OF THE DETECTABILITY OF CRACKS IN

1989/1/1Real-time radioscopic examination of welds is a rapidly developing technique. Contrast sensitivities better than 2% are often required. Realtime radioscopic equipment is now available which can satisfy the contrast sensitivity requirements for this type of weld inspection.

A Radioscopic Technique to Observe Bubbles in Liquid

A real-time radioscopic visualization technique was used to observe the shape and motion of argon bubbles in liquid aluminum. The images provided by a X-Ray generator on a radiographic screen were recorded and treated to extract the width and velocity of the bubbles. The treatment was validated by observations, at room temperature, of hollow spheres machined in a rotating aluminum block. The

Via hexagons to squares in ferrofluids: experiments on hysteretic

Via hexagons to squares in ferrofluids S2647 (a) (b) (c) (d) Figure 5. X-ray absorption images of two different states of the pattern observed with the fluid APG512A from Ferrotec. Fluid parameters are initial susceptibility χ = 1.17, density ρ = 1236 kg m−3, surface tension σ = 30.6mNm−1, viscosity η = 120 mPa s. = 120 mPa s.

(PDF) Automated flaw detection in aluminum castings

890 IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION, VOL. 18, NO. 6, DECEMBER 2002 Automated Flaw Detection in Aluminum Castings Based on the Tracking of Potential Defects in a The classic image-processing methods for flaw detection of aluminum castings use a bank of filters to generate an error-free reference image.

Via hexagons to squares in ferrofluids: experiments on

2006/9/8To overcome the hindrances to optical observation we utilize a radioscopic technique which is capable of recording the full surface relief in the centre of the vessel, far away from distortions by the edges (Richter and Bl?sing 2001). The experimental set-up is2(a).

Melt Treatment — Evolution and Perspectives

"A Radioscopic Technique to Observe Bubbles in Liquid Aluminium", Light Metals 2002, Ed. W. Schneider, TMS, 861–867. Google Scholar [13] A. Fjeld, J.W. Evans, D.C. Chesonis, "Laboratory and Full Scale Measurements of Bubble Behavior in Gas Fluxing

(PDF) Experimental investigations on melting of lead in

Barber et al. [17] used gamma-ray technique to observe the interface movement and shape in lead tin telluride during crystal growth in a Bridgman furnace. Neutron is a subatomic particle without a net charge; consequently Coulomb attraction forces have no effect on it, when it travels through matter.

APPLICATION OF RADIOSCOPY SYSTEM INTO AN AUTOMATIC PRODUCTION LINE IN AUTOMOTIVE INDUSTRY

radioscopic testing is (in case of laser welding) difficult. For these experiments specimens were manufactured – each with three artificial flaws of same width (0,1mm) and with depths 0,2mm, 0,5mm, and 0 to 0,5mm (triangular cross-

Color edges extraction using statistical features and

2014/1/23This technique leads the user to find an optimal segmented image with closed region boundaries with accurate results much better than using the simple edge detectors [] or other existing techniques [10,11]. The main steps of the proposed detector are depicted1

Application of Radioscopy System into an Automatic Production Line in Automotive Industry

bodies. Aim of here-described tests was to verify (or refute) usage of radioscopic testing system (RS) as a part of production line for real time full examination. 2 Examination background, proposal of RS technique The verification was done on the specimens

Essential Readings in Light Metals : Cast Shop for

A Radioscopic Technique to Observe Bubbles 201 (7) in Liquid Aluminum M. Bertherat T. Odievre M. Allibert P. Le Brun Molten Aluminium Purification 208 (10) T. Engh G. Sigworth Removal of Hydrogen from Molten Aluminium 218 (8) by Gas Part 1: 226 (8)

1. Introduction

Over the last decades, since the first published results by Juan Parodi in 1991 [1], endovascular aneurysm repair (EVAR) became the vascular surgeon's most preferential technique to treat aortic aneurysms due to its benefit of early clinical and surgical outcomes with good long-term durability.

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