FIELD: ultrasonic inspection of materials.
SUBSTANCE: radiator radiates ultrasonic oscillation pulses. Receiver receives pulse after they passed sample. Speed of propagation of pulses is measured as well as decay factor of ultrasonic oscillations. After model (1) is subject to parametric identification, meanings of m and n factors are determined, which factors differ for any brand of polymer. Limit of break strength is calculated on base of measured parameters from formula 
, where σ is rupture strength, kgs/cm2; ρ is polymer density, kg/cm3; h is thickness of sample, cm; c is speed of sound, cm/s; α is ultrasound decay factor, cm-1, ω is ultrasonic oscillation frequency, s-1.
EFFECT: improved truth of results; improved precision.
1 tbl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF ULTRASOUND CONTROL OF HARDNESS OF POLYMERS | 2016 |
|
RU2624415C1 |
| METHOD OF ULTRASONIC MOONEY VISCOSITY CONTROL OF POLYMERS | 2006 |
|
RU2319956C2 |
| ULTRASONIC METHOD OF MEASUREMENT OF ELASTOMERS' DEGREE OF CRYSTALLINITY | 2005 |
|
RU2291420C1 |
| METHOD OF ULTRASONIC POLYMERS MOONEY VISCOSITY CONTROL | 2019 |
|
RU2712956C1 |
| METHOD FOR ULTRASONIC DETERMINATION OF AVERAGE MOLECULAR WEIGHT OF POLYMERS IN SOLUTION | 2010 |
|
RU2418298C1 |
| METHOD FOR ULTRASONIC INSPECTION OF MOLECULAR WEIGHT DISTRIBUTION OF POLYMER IN SOLUTION | 2011 |
|
RU2475732C1 |
| PROCEDURE DETERMINING PHYSICAL AND MECHANICAL CHARACTERISTICS AND COMPOSITION OF POLYMER COMPOSITE MATERIALS IN STRUCTURES BY ULTRASONIC METHOD | 2001 |
|
RU2196982C2 |
| DEVICE FOR ULTRASONIC CHECK OF MEDIA | 0 |
|
SU1355923A1 |
| METHOD OF ELASTOMER QUALITY ULTRASONIC CHECKING | 0 |
|
SU917073A1 |
| 0 |
|
SU247664A1 |
