DEVICE FOR DETERMINING PHYSICAL AND MECHANICAL CHARACTERISTICS OF CONSTRUCTION MATERIALS Russian patent published in 2020 - IPC G01B11/16 G01N3/08 G01N21/88 

FIELD: test technology.

SUBSTANCE: invention relates to laboratory testing of samples of construction materials and can be used in testing laboratories and at enterprises associated with their development and production. Device comprises a frame in the form of a rigid box with openings for optical access to the controlled surfaces of the sample, linear displacement sensors rigidly connected to the walls of the frame, and photoplates attachment assemblies. Frame is made in the form of a box enveloping the sample, and is rigidly attached to a part of the base separated by a groove-compensator from the support platform. Marked optical access windows are arranged on the side of each lateral face of the sample and are equipped with lodgments for fixing photoplates at a distance from the analyzed surface, which provides registration of speckle-structure. Linear displacement transducers are installed along diagonals of frame cross-section in plane perpendicular to its lengthwise axis.

EFFECT: possibility of simultaneous registration of fields of spatial displacement vectors of all four side faces of the sample, reduced effect of parasitic deformations on registration of spatial displacement fields.

1 cl, 2 dwg