PRE-PRODUCTION MODEL TEST. Tests for static durability

Tests for static durability are spent for definition of strength of a separate product, knot, interface of elements of furniture (shipovogo connections, connections by furniture couplers, loops, decorative bolts etc.) Or a material on compression, a stretching, a bend or other kind of deformation. Test is made before destruction, and the result is compared with the standard data or results of previous similar tests. So, the furniture for sitting is exposed to considerable loadings, therefore GOST 12029-77 ' Chairs wooden. Test methods on durability and static durability ' are provided by obligatory definition of durability and static durability. The essence of a test method on durability consists in influence of cyclic loadings on a chair by means of it kachanija on back and forward legs with established on sideni cargo. At test for static durability a chair establish two legs on mobile to a traverse of the test car and load vertically with loading. Indicators of tests correspond with standard, regulated GOST 19917-74.

Reliability of soft elements of furniture is defined in accordance with GOST 14314-69, the durability of beds and static durability of connection of backs of a bed with tsargami - in accordance with GOST 17340 71, stability and rigidity of chairs on a metal skeleton - in accordance with GOST 20998-75, definition of rigidity of desks and durability of boxes and semiboxes - in accordance with GOST 19203 73, test of case furniture for durability, deformability and stability - in accordance with GOST 19382-80 and GOST 19195-79, etc. reliability and durability Indicators characterise similar properties of furniture in concrete conditions of their use.

At carrying out of tests for reception of authentic results the considerable number of supervision defined by a kind of tests, a material, a design is necessary. Results of supervision are processed by methods of variation statistics and compared with the standard. By results of tests the decision on entering into a design of necessary changes and product start in manufacture is made.

The Designer - the indispensable participant of tests of pre-production models as by results of tests updatings of the project which cannot be made without his permission and participations are possible. Architectural supervision of manufacturing and test of pre-production models - a finishing part of process of creation of furniture.