Tomsk Open Laboratory for Material Inspection - TOLMI
This laboratory was established as part of a scientific research project supported with a monetary grant awarded by the Government of the Russian Federation under a grant competition designed to provide governmental support to scientific research projects implemented under the supervision of the world's leading scientists at Russian institutions of higher learning, research institutions of the governmental academies of sciences and governmental research centers of the Russian Federation (Resolution of the RF Government No.220 of April 9, 2010).
Grant Agreement No.: 11.G34.31.0002
Host institution of higher learning:
State educational institution of higher professional education "National Research Tomsk Polytechnic University"
Scientific research area:
Nuclear power engineering and nuclear technologies
To establish the Tomsk Open Laboratory for Material Inspection (TOLMI) as one of the world's leading centers of research in the field of non-destructive control and safety assessment of objects and components.
Key project objectives:
1. To conduct fundamental and applied research in the field of non-destructive control;
2. To develop new non-destructive diagnostics and control methods;
3. To develop modern methods of quantitative control, unique equipment, and gardware and software complexes for the leading national economy sectors;
4. To engage foreign scientists, research groups, and production teams in collaborative research initiatives;
5. To achieve the status of an internationally recognized expert body in the field of applied engineering.
Anticipated project outputs:
1. The project will help develop a new source of accelerated positrons;
2. The project will help develop a portable X-ray tomography scanner;
3. The project will help develop a control system capable of supporting three-dimensional real-time analysis of defects, as well as standardized ultrasound control platform supporting two- and three-dimensional visualization;
4. The project will help develop non-destructive methods of control over amounts of hydrogen in materials, as well as methods of protection of metals and alloys from hydrogen impact.
Leading scientist's full name: Kroening, Hans-Michael Wilhelm Adolph
Academic degree and title:
Doctor of natural sciences, Professor
Head of the International Research and Education Laboratory of Non-Destructive Control
Field of scientific interests:
1. Nuclear power engineering and nuclear technologies.
2. Non-destructive control and diagnostics in industrial production.
3. Ultrasound control.
The leading scientist is an honorary member of the following universities and institutions:
- Honorary professor at the Tomsk Polytechnic University;
- Honorary professor at the St. Petersburg University of Railroad Engineering;
- Honorary member of the Indian Non-Destructive Control Society;
- Honorary member of the Indian National Development Academy;
- Honorary member at the Kyrgyz-Russian-Slavic University;
- Honorary professor at the Issyk-Kul State University;
- Honorary doctor at the Eurasian National University named after Gumilev in Astana;
- Honorary doctor at the National Academy of Sciences of the Republic of Kyrgyzstan.
In 2008, the leading scientist received an award for his services to science from the international Society for Optics and Photonics (SPIE).
Project outputs for 2012
By the middle of the third phase of the scientific research project "Non-destructive control and diagnostics in industrial production" the laboratory achieved the following significant results:
• The scientists developed a mathematical model of the process of removal of charged particles from the chamber of the LIK-4М testing bench.
• The scientists selected the optimal structure of the system designed to form a beam of positrons.
• They developed the structure of the block of generation and reception of acoustic signals FAR.
• They fabricated test specimens for their penetrometer.
• They developed the structure of the measuring transformer designed to control the thickness of coatings.
• They put together a piece of equipment designed to collect projection data using a pinhole and a parallel collimator.
• They designed a program for collection of projection data and a reconstruction program.
• They created the TOLMI-150-10 tomographic scanner based on reverse projection.
• They designed the structure of the eddy current transformer.
• They designed the concept scheme and structure of the penetrometer's electronic current magnetization block.
• They proposed a method designed to measure amounts of hydrogen in light alloys based on the ultrasound waves' propagation rate.
• They designed a method that uses eddy currents to determine the per-layer amount of hydrogen contained in titanium saturated with hydrogen.
The outputs of the laboratory's research activities are implemented at RF industrial enterprises:
• The method and the eddy current system designed to measure the internal diameter of heat exchange pipes made of ferromagnetic and austenite steel has been implemented by "Redvill" Research and Production Association.
• "Russian Railways" OJSC is about to implement ultrasound penetrometers designed to control the lateral parts of the trucks and wagon wheel axles.
• The laboratory is looking into the possibility of finding a way to determine the amount of hydrogen in titanium for the VSMPO-AVISMA Corporation.
• The laboratory has put together a number of commercial proposals for "Norilsk Nickel" that are currently being reviewed by the corporate science and technology committee.
The laboratory has held a seminar on non-destructive control in China. The laboratory's leader, Professor M. Kroening, and Professor V. A. Klimenov have delivered more than 15 lectures for Chinese students and researchers in Beijing and Soochow.
Project outputs for 2011
During the second phase of the scientific research project "Non-destructive control and diagnostics in industrial production" the laboratory achieved the following significant results:
• The scientists designed a model of generation of positrons by moderately relativist electrons using the Geant4 and CLHEP libraries.
• They developed a testing bench for experimental research of conversion of an electronic beam on the target and for unambiguous registration of positrons and their energy spectrum changes generated by any source.
• They proposed an impulse injector of positrons based on a betatron.
• They designed an effective magnetic system of acceleration of positrons.
• They developed a block of control over the phased array.
• They developed an algorithm and software for the acoustic visualization block. The software developed for the FAR control equipment was written using the "Assembler" language. The software developed to exercise control over the entire system from a personal computer was implemented in "DELPHI" package.
• The scientists developed a model of quantitative analysis of acoustic information and computation of control-associated risks based on the 2D or 3D images they received.
• They developed a test specimen of a tomographic scanner to study the key specifics of the process of acquisition of projection data in a high spatial resolution system, perform mathematical reconstruction, and create 3D images.
• They developed an algorithm for mathematical reconstruction of the interior structure of the surface layers of protective materials and coatings in conditions of limited access.
• The scientists developed the penetrometer's measuring channel with a variable-frequency magnetic field.
• They designed and fabricated an experimental tool enabling them to examine construction materials using acoustic control methods.
• They designed a method enabling them to research hydrogen embrittlement using a micro-magnetic multi-parameter 3MA analyzer.
• They proposed and tested a method of modifying non-destructive control of nuclear power engineering materials using impulse electronic beams.
• They designed the terms of reference for the development of a system of control over hydrogen embrittlement using acoustic methods.
• They developed a system enabling them to control alignment of welded junctions of SKS 10.03 boring pipes.
• They developed a complex for control over uniformity, "Mongoose".
• They developed a tool for non-destructive control of metals and alloys, "Thermotest".
Project outputs for 2010
During the first phase of the scientific research project "Non-destructive control and diagnostics in industrial production" the laboratory achieved the following significant results:
• The project scientists researched the focusing properties of azimuth-symmetrical and azimuth-periodical magnetic fields of small-sized betatrons. They demonstrated the specifics of using these magnetic systems to accelerate positrons. They theoretically demonstrated the possibility of accelerating positrons in an induction accelerator.
• They designed and fabricated a 3.5 MeV positron accelerator model, a source of positrons for an accelerator. They experimentally researched the processes of accumulation and acceleration of positrons. They experimentally confirmed the possibility of using positron acceleration in an induction cyclical accelerator.
• The scientists proved that ultrasound control methods are effective in terms of their ability to identify defects, determine their coordinates, conditional extent and equivalent dimensions.
• The scientists demonstrated that ultrasound defectoscopy is currently dominated by penetration methods that make it possible to obtain reliable information required to forecast residual lifetime and operating resources of objects and materials.
• The scientists established that sonography is the optimal solution for the ultrasound defectoscopy problems.
• They proposed a functional scheme of an ultrasound penetrometer that employs real-time aperture synthesis methods.
• The scientists demonstrated that the optimal values of initial X-ray radiation energy for lightweight materials fall within the range of 40 – 300 keV.
• They demonstrated that in order to achieve spatial resolution of up to tenths of a millimetre it is necessary to use a mathematical reconstruction tool, 0.1 mm scan step, and not more than 1% statistical error of the signal in the detector.
• The scientists designed two mathematical methods of reconstruction of density distribution based on integral albedo data: the point-by-point scanning method and energy scanning method.
• They designed and fabricated a two-channel tomography scanner model that enabled them to obtain and confirm the key energy and angle dependencies for scattered radiation fields in materials such as fibreglass, organic plastics, and carbon plastics.
• They designed and fabricated a "Tomscan 200" tomography scanner that enabled them to implement optimal collimation by initial radiation and scattered radiation.
• They demonstrated that defectoscopy of lengthy metallic objects primarily employs penetrometers with differential transmission and attached spinning eddy current transformers.
• In order to eliminate the deficiencies of transmission-type eddy current transformers, multiple-sector transmission-type transformers can be used. They are able to localize the control zone of each measuring channel and adjust sensitivity depending on the azimuth and lateral displacement of the object controlled.
• The scientists proved that eddy current penetrometers with attached spinning transformers, as well as rotor-type instruments ensure maximum sensitivity to lateral surface defects for this type of instruments regardless of whether their lateral depth and control rate change smoothly or drastically, and that they can be used to control objects whose diameter is unlimited.
• Penetrometers that employ attached multiple-sector eddy current transformers capable of exciting variable-frequency lateral eddy currents are most suitable for non-destructive control of objects characterized by significant lateral displacement.
• A transmission-type multiple-sector ECT and an attached multiple-sector ECT capable of exciting variable-frequency lateral eddy currents can be combined to form a single ECT to excite eddy currents and magnetic fields with variable-frequency spatial components inside an object.
Presentation of the laboratory
- Presentation in English
ПPresentations of Prof. Kroening made during the seminar in Chana
- INTERNATIONAL NDT CENTERS
- A modern application laboratory
- UT, μ-NDT, NDT Systems
- R & D DRIVEN BY DEMAND
- LABORATORY STRUCTURE
- Advanced UT Systems
- Integrated NDT Systems
- Fatigue Assessment
- ULTRASONIC INSPECTION of DISSIMILAR WELDS
- Thermal NDT
- Betatrons & Applications
Presentation of Prof. Kroening which addresses the disaster in Fukushima
Lecture of Prof. about the industry oriented research