PORTABLE COMBINED HARDNESS GAUGE Russian patent published in 2005 - IPC

FIELD: testing engineering.

SUBSTANCE: hardness gauge comprises ultrasonic pickup composed of acoustical resonator whose one end is provided with indenter and other end has loading spring, piezometric transducers secured to the resonator, generator, and digital electronic unit for processing and recording made of connected in series power supply circuit, micro-controller, matrix liquid crystal display, and keyboard. The hardness gauge is additionally provided with the dynamic pickup having hammer with hard alloy ball actuated by the spring and built-in magnet that induces alternative electromotive force in the inductive coil that embraces the housing of the dynamical pickup connected with the analogue-digital converter built in the micro-controller through the device for retrieving and storing .

EFFECT: improved design.

1 cl, 2 dwg