Holographic Complex for Measurements of Dynamic Deformations
Development of Digital Holographic Complex for Contactless Measurements of Transient Dynamic Deformations in Materials and Constructions
Tech Area / Field
- INS-MEA/Measuring Instruments/Instrumentation
- PHY-OPL/Optics and Lasers/Physics
3 Approved without Funding
Center for Laser Technologies, Kazakstan, Almaty
- Kyrgyz-Russian Slavonic University, Kyrgyzstan, Bishkek\nSpektr-Conversion, Russia, Chelyabinsk reg., Snezhinsk\nVNIITF, Russia, Chelyabinsk reg., Snezhinsk
- Universität Stuttgart / Institut fuer Technische Optik, Germany, Stuttgart\nAlabama Agricultural and Mechanical University, USA, AL, Normal
Project summaryA well known fact that physical and mechanical properties of the majority materials under high-speed dynamic and static loads are considerably different. It is extremely difficult to provide quality and reliability of modern designs working in conditions of dynamic loads without determining and considering such differences
Background analysis shows that:
There is no at present time equipment and common standardized techniques of testing materials and designs under intensive dynamic load resulting in growth of high-speed processes of destruction
One of physical methods on which can be based the device allowing to measure high-speed (dynamic) deformation in hard materials and natural objects is holographic interferometry.
The task of holographic measurement of high-speed deformation fields of natural objects as functions of time is not solved for today.
Aim of the project is the development of digital holographic complex to provide high-speed multi-exposition recording of fields of transient stochastic deformations and its reconstruction as interferometric movie
To get this aim authors plan:
- to develop and use specialized pulse laser providing generation continuous single-frequency infrared radiation during 5 msec with integrated energy up to 10 J or in sequence of pulses with programmed duration and on-off time ratio, that 100 times exceeds the power characteristics of most powerful modern single-frequency continuous-wave lasers;
- to use the latest СMOS-camera with recording frequency up to 100 kHz and duration of an exposition up to 5 μsec as the recording device;
- to develop and apply to record digital holograms an interferometer of original design with formation of holographic interference structure in infra-red range and subsequent effective incoherent amplification and transformation of the image to visible range. This allow to reduce requirements to resolution and sensitivity of the reception CCD-matrix and to provide recording of series of holograms of natural objects in supershort time period.
Moreover, in order to provide high consumer properties of the complex the authors plan to develop during the project:
- computerized system of synchronization and operation control of the complex;
- application software for automated processing of measuring data and its representation in user friendly view;
- to arrange all devices as an autonomous mobile complex.
By design technical characteristics the complex has no global analogs:
Recording rate up to 30kHz;
Hologram amount in the set up to 150;
Dimension of the object up to 1x1 m;
Speed of surface displacement up to 5 m/s;
Four institutions from three CIS countries (Russia, Kazakhstan, Kyrgyzstan) are involved in the project. Every participating scientific team has long-term experience and essential achievements in adjacent areas – holographic non-destructive testing of complex designs, development of coherently-optical measuring methods and equipment, control systems of lasers and processing systems of measuring information which previously were used for weapon development. Kazakh and Russian teams have successful experience of ISTC projects implementation. The majority of the project participants (64%) are the experts involved in weapon development (they execute 80% of the project activity). Some foreign organizations and scientists, who are well-known experts in holography and optical measurements are involved too. Collaboration includes joint experiments, seminars, results exchange and joint efforts for commercialization of the project results.
To minimize terms and maximize quality in reaching project objective the authors plan to integrate scientific and technological opportunities of participating institutes, and to take the following activities at active assistance of the collaborators:
- Theoretical and experimental researches (on mockup samples) during the first year of the project in order to determine configuration and improve optimal design of the basic units of the complex (interferometer, pulsed laser, computer control system), and also to complete the architecture of software for processing measured data. To formulate initial requirements on development of the designer documentation.
- On the basis of the first stage results to develop draft designer documentation, to produce prototype of units of the complex and to develop pilot software, to test them during the second year.
- The last 6 months of the project are devoted to operational development of the design up to a level of demonstration sample, to assemble and testing demonstration sample of the complex, to development the final package of designer and operational documentation. Results of this stage provides possibilities for multiplication and delivery developed equipment for scientific and industrial customers.
For commercialization after the project termination the authors plan to sign an agreement on consortium between participants, including distribution of rights to intellectual property and interest in profit, and to start production on the basis of one of the participant - Company “Spectrum – conversion” in Sneghinsk, Chelybinsk region.
Project duration is 30 months, total project effort (person*days) – 7899.
The International Science and Technology Center (ISTC) is an intergovernmental organization connecting scientists from Kazakhstan, Armenia, Tajikistan, Kyrgyzstan, and Georgia with their peers and research organizations in the EU, Japan, Republic of Korea, Norway and the United States.
ISTC facilitates international science projects and assists the global scientific and business community to source and engage with CIS and Georgian institutes that develop or possess an excellence of scientific know-how.