FACILITY FOR ANALYSIS OF STRESS RELAXATION OF EASY DEFORMED MATERIALS AT FIXED DEFORMATION Russian patent published in 2010 - IPC G01N33/36 

FIELD: test engineering.

SUBSTANCE: disclosed here invention refers to facilities for analysis of kinetics of deformation-relaxation processes in easy deformed materials, for example textile ones. The facility consists of a heat chamber with devices for steam-air medium supply and automatic control of heat parametres of an investigated object, of mechanism of loading of sample of the investigated object and of system of measuring of relaxation stress (tension) of materials at fixed deformation with a sensor of commencement of motion of a passive clamp. The measuring system consists of a solenoid with a control unit made in form of a field transistor; also its core is structural and informational communicated with the passive clamp of the investigated sample of the material. A solenoid coil is commuted with the solenoid control unit. The system of protocol control of electric voltage supplied to the coil of the solenoid via the circuit of pulse-duration modulation and the sensor of commencement of motion of the passive clamp are commuted with a micro-processor and the solenoid control unit by means of a micro-controller.

EFFECT: simplified design of facility and reduced error of measurement.

2 dwg