Non-destructive Testing of Longitudinal and Charge Weld Seams in Extruded Aluminum and Magnesium Profiles

2015 ◽  
Vol 2 (10) ◽  
pp. 4866-4873 ◽  
Author(s):  
Marcus Engelhardt ◽  
Daniel Behne ◽  
Norbert Grittner ◽  
André Neumann ◽  
Wilfried Reimche ◽  
...  
Keyword(s):  
Non Destructive Testing ◽  
Destructive Testing ◽  
Charge Weld ◽  
Non Destructive ◽  
Weld Seams

RADIOGRAPHIC TESTING BY COMPUTED RADIOGRAPHY (RT-CR) OF THE HELIUM INLET WELDS (HI) OF THE POLOIDAL FIELD COIL (PF1), PRODUCED BY JSC NIIEFA (SCIENTIFIC RESEARCH INSTITUTE OF ELECTROPHYSICAL APPARATUS) WITHIN THE FRAMEWORK OF THE INTERNATIONAL THERMONUCLEAR EXPERIMENTAL REACTOR (ITER) PROJECT

2019 ◽  
pp. 38-43
Author(s):  
K. A. Bagaev ◽  
T. M. Gurieva ◽  
A. A. Mednikov ◽  
I. Yu. Rodin ◽  
I. V. Sokolov
Keyword(s):  
Computed Radiography ◽  
Non Destructive Testing ◽  
Poloidal Field ◽  
Destructive Testing ◽  
Radiographic Testing ◽  
Imaging Plates ◽  
Non Destructive ◽  
Weld Seams ◽  
Iter Project

The manufacturing and non-destructive testing of the superconducting poloidal coil PF1 is one of the tasks of NIIEFA, the member of the international ITER project. Radiographic films were traditionally used for the purposes of radiation non-destructive testing. The technology of computed radiography was used to substitute films. It improved the quality of testing and increased productivity. Comparisons of testing results were carried out using films and imaging plates. The “Test Measurement for Qualification of Computed Radiography method for HI PF1 Weld Seams testing” was developed. It allowed to do testing using imaging plates without installing a duplex wire indicator. Compliance with the standards requirements for unsharpness is confirmed using certified specimens.

Non-Destructive Detection of Weld Seams in Extruded Aluminum Profiles

2013 ◽  
Vol 585 ◽  
pp. 103-110 ◽  
Author(s):  
Marcus Engelhardt ◽  
N. Grittner ◽  
Wilfried Reimche ◽  
Friedrich Wilhelm Bach
Keyword(s):  
Room Temperature ◽  
Current Sensor ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
Porthole Die ◽  
Different Types ◽  
Aluminum Profiles ◽  
Non Destructive ◽  
Weld Seams

The present study focuses on the feasibility of non-destructive testing methods for the detection of transverse and longitudinal weld seams in extruded aluminum alloys. Two extrusion trials using billet on billet extrusion with a porthole die producing both types of weld seams were conducted. First, two billets of different types of alloy, AlMgSi1 (EN AW-6082) and AlZn4.5Mg1 (EN AW-7020), were extruded. In a second trial, two billets of AlZn4.5Mg1 were processed. The produced profiles were then tested by non-destructive testing using a tactile eddy current sensor as well as an encasing sensor at room temperature. The measured signals of both sensors were then evaluated and compared. Microstructural analyses have been carried out to correlate the occurrence of transverse and longitudinal weld seams with the results of the non-destructive testing.

Non destructive testing of works of art by terahertz analysis

2013 ◽  
Vol 64 (2) ◽  
pp. 21001 ◽  
Author(s):  
Jean-Luc Bodnar ◽  
Jean-Jacques Metayer ◽  
Kamel Mouhoubi ◽  
Vincent Detalle
Keyword(s):  
Non Destructive Testing ◽  
Destructive Testing ◽  
Works Of Art ◽  
Non Destructive

Modeling of a sensitive element on a planar mushroom-shaped metamaterial for non-destructive testing and searching for inhomogeneities in technological media

2020 ◽  
pp. 54-59
Author(s):  
A. A. Yelizarov ◽  
A. A. Skuridin ◽  
E. A. Zakirova
Keyword(s):  
Sensitive Element ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Resonant Frequency Shift ◽  
Maltese Cross ◽  
Informative Parameters ◽  
Non Destructive ◽  
Cross Type ◽  
Electrodynamic Structure ◽  
Electrophysical Parameters

A computer model and the results of a numerical experiment for a sensitive element on a planar mushroom-shaped metamaterial with cells of the “Maltese cross” type are presented. The proposed electrodynamic structure is shown to be applicable for nondestructive testing of geometric and electrophysical parameters of technological media, as well as searching for inhomogeneities in them. Resonant frequency shift and change of the attenuation coefficient value of the structure serve as informative parameters.

STUDY OF HOMOGENEITY, POROSITY AND INTERNAL DEFECTS IN AERATED AND EPS AGGREGATE POLY BRICKS USING NEUTRON RADIOGRAPHY TECHNIQUE

2015 ◽  
Vol 7 (2) ◽  
pp. 1428-1439
Author(s):  
Khurshed Alam ◽  
Md. Sayeedur Rahman ◽  
Md. Mostafizur Rahman ◽  
S. M. Azaharul Islam
Keyword(s):  
Optical Density ◽  
Neutron Radiography ◽  
Density Variation ◽  
Expanded Polystyrene ◽  
Elemental Distribution ◽  
Non Destructive Testing ◽  
Internal Defects ◽  
Destructive Testing ◽  
Radiographic Images ◽  
Non Destructive

A powerful non-destructive testing (NDT) technique is adopted to study the internal defects and elemental distribution/homogeneity and porosity of aerated brick and EPS aggregate poly brick samples. In the present study the internal defects like homogeneity, porosity, elemental distribution, EPS aggregate and aerator distributor in the test samples have been observed by the measurement of gray value/optical density of the neutron radiographic images of these samples. From this measurement it is found that the neutron intensity/optical density variation with the pixel distance of the AOI of the NR images in both expanded polystyrene (EPS) aggregate poly brick and aerated brick samples comply almost same in nature with respect to the whole AOI but individually each AOI shows different nature from one AOI to another and it confirms that the elemental distribution within a AOI is almost homogeneous. Finally it was concluded that homogeneity, elemental distribution in the EPS aggregate poly brick sample is better than that of the aerated brick sample. 

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