FIELD: physics; test engineering.
SUBSTANCE: present invention pertains to test engineering and can be used for determining mechanical properties of sheet materials under biaxial stretching conditions in mechanical engineering, automobile manufacturing aircraft engineering and other industries. A disc shaped specimen is put onto a matrix, loaded by a flexible die until destruction, on the forming surface of which an antifriction coating is deposited before testing. The value of limit of elasticity εlim is calculated using the formula εlim =ln(t0/t), where t0, t is the thickness of the working part of the specimen before and after testing, respectively.
EFFECT: increased accuracy of testing, reduced labour input and material usage.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PROCESS TESTING SHEET MATERIALS FOR DOUBLE-AXES TENSION | 2002 |
|
RU2229696C2 |
| PROCESS TESTING SHEET MATERIALS FOR TENSION | 2002 |
|
RU2226682C2 |
| TESTING METHOD OF SHEET MATERIALS OF TENSION | 2012 |
|
RU2527671C2 |
| METHOD OF STRETCHING TESTING OF SHEET MATERIAL SAMPLES | 2013 |
|
RU2555217C2 |
| METHOD OF TESTING OF CONSTRUCTIONAL MATERIAL FOR PLASTICITY | 2013 |
|
RU2555476C2 |
| PROCEDURE FOR ASSESSMENT OF ABILITY OF FLATS TO STAMPING | 2015 |
|
RU2621324C2 |
| METHOD OF TESTING STRUCTURAL MATERIAL FOR PLASTICITY | 2016 |
|
RU2650431C2 |
| METHOD OF DETERMINING PROPERTIES OF DEFORMATION | 2013 |
|
RU2537341C2 |
| METHOD TO MEASURE DEFORMATIONS | 2013 |
|
RU2537105C2 |
| SHEET MATERIAL TEST METHOD | 2015 |
|
RU2620781C1 |
