Determination of the weld thickness of turbine for aircraft engine by high-energy X-ray tomography

It is necessary to test the weld thickness of turbine, as it is one of the most important parts for aircraft engine. The weld thickness of turbine for aircraft engine by high-energy X-ray tomography was determined. We used an X-ray tube and a betatron as X-ray sources. The wall thickness of two tubes and weld thickness of turbine were measured. It is shown that the high-energy X-ray tomography system is determined the wall thickness of the tube and the weld thickness of turbine with high accuracy. We also studied the method to reduce scattered radiation. All experiments were carried out in the non-destructive testing (NDT) Institute of Tomsk Polytechnic University (TPU)

Betatron radiography and tomography of steel castings with large thickness

Steel castings with large thickness are widely used in different areas of industry and the control of steel castings with large thickness is becoming more and more important in order to detect defects and ensure the reliability. In this paper, we carry out betatron radiography and tomography to control the steel castings with large thickness and check the potential ability of Inspection and Examination System (IES) for a high-energy betatron tomography. The results of betatron radiography and tomography of steel castings with large thickness are presented and compared with precedent work, which shows that the IES is considered a promising high-energy tomography system

Betatron radiography and tomography of steel castings with large thickness

Steel castings with large thickness are widely used in different areas of industry and the control of steel castings with large thickness is becoming more and more important in order to detect defects and ensure the reliability. In this paper, we carry out betatron radiography and tomography to control the steel castings with large thickness and check the potential ability of Inspection and Examination System (IES) for a high-energy betatron tomography. The results of betatron radiography and tomography of steel castings with large thickness are presented and compared with precedent work, which shows that the IES is considered a promising high-energy tomography system

Application of dual energy method for non-destructive testing of materials designed to work in extreme conditions

The description of the dual energy method (DEM) for non-destructive testing (NDT) of materials and products is presented. It highlights the key factors that determine its accuracy and performance and shows the possibilities for its further improvement. The correlation between the quantum noise level and the DEM precision of the effective atomic number was found

Study on the spatial structure of ultrafine-grained light alloys by microtomography

Severe plastic deformation is a widely used technique to modify common structural materials for obtaining ultra-fine grained microstructure. One kind of this technique is equal channel angular pressing. Many testing methods are applied to investigate the internal structure of materials after deformation. Recently developed microtomography is a promising method allowing testing volumetrical structure of a sample non-destructively. In this paper, we present preliminary results of studying light alloys microstructure after severe plastic deformation by using microtomography applied to such kind materials for the first time.</jats:p

Parameter identification method for dual-energy X-ray imaging

The paper presents a method for parameter identification of dual-energy X-ray imaging. This method is based on pre-calculated or experimentally obtained dependencies between the right sides of the system of two integral parametric equations and two required parameters within the ranges interesting to a customer. This method is characterized by a high processing speed depending on the speed of random access memory. Thus, it is used in different implementations of dual-energy X-ray imaging, namely digital radiography and computed tomography

Parameter identification method for dual-energy X-ray imaging

The paper presents a method for parameter identification of dual-energy X-ray imaging. This method is based on pre-calculated or experimentally obtained dependencies between the right sides of the system of two integral parametric equations and two required parameters within the ranges interesting to a customer. This method is characterized by a high processing speed depending on the speed of random access memory. Thus, it is used in different implementations of dual-energy X-ray imaging, namely digital radiography and computed tomography