NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION.

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NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATIONS IN EXPLOSION CHAMBERS Speaker: Eng. Evgeniy Pekar The E.O. Paton Electric Welding Institute (PWI) of NAS of Ukraine Department on Welding, Cutting and Treatment of Metals by Explosion NATIONAL ACADEMY OF SCIENCES OF UKRAINE Authors: L.D. Dobrushin, E.D. Pekar, A.V. Cherkashin, V.I. Lysak, S.V. Kuzmin

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 2 To Control the Mode of Deformation in Metal Structures that Undergo Dynamic (Pulse) Loading is for Sure Needed Testing of explosive chambers Monitoring of their stress-strain state in the operation Tubular Explosion Chamber of 4.0 kg Capacity

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 3 A Key Problem in Tensometric Monitoring of Mode of Deformation in Metal Structures Low sensitivity of the technique Large data scattering

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 4 Newly Developed Measurement Scheme

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 5 Determination of the Sensor's Temperature Pseudo Strain of Gauge Excited by Electric Current Pulse Strain(1E-6) - Time(S) Dependence of Pseudo-Strain (1E-6) from Temperature(°C)

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 6 Temperature Compensation of the Gauge Scheme Pseudo Strain (E-6) – Time (S)

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 7 Calibration of the Strain Gauge Scheme (four-point bending) Arrangement

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 8 Application. Explosion Chamber Elements

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 9 Application. Explosion Chamber. Registration Used Flat Charge having 300 x 300 x 12 mm Dimension

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 10 Application. Explosion Chamber Anvil Element

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 11 Application. Explosion Chamber Anvil Element. Residual Strains The Residual Strains. Repeated Simulation of the Bridge Comparison of the Residual Strains Measured by Different Methods

NATIONAL ACADEMY OF SCIENCES OF UKRAINE The E.O. Paton Electric Welding Institute (PWI) DATABASE AND METODOLOGY FOR MONITORING DYNAMIC DEFORMATION IN EXPLOSION CHAMBERS 12 Main Conclusions Sensitivity and accuracy of measurements of dynamic mode of deformation that are difficult to obtain with traditional methods are increased; Newly method makes it possible to fix the residual deformation of the structure; Costs of measuring arrangements and their servicing are significantly reduced; Developed arrangements and methodology are recommended for testing and monitoring of metal structures strain state exposed to dynamic (pulsed) loading.