GOST R 53965-2010

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  ГОСТ Р 53965-2010

GOST R 53965−2010 nondestructive testing. The definition of mechanical stress. General requirements to classification methods

GOST R 53965−2010
Group Т59

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

Nondestructive testing

THE DETERMINATION OF MECHANICAL STRESS

General requirements to classification methods

Non-destructive testing. Evaluation of mechanical stresses. General requirements for methods classification

OKS 7.040.10*
_______________
* In the index «National standards» 2011
OKS 77.040.10. — Note the manufacturer’s database.

Date of introduction 2011−12−01

Preface

The objectives and principles of standardization in the Russian Federation established by the Federal law of 27 December 2002 N 184-FZ «On technical regulation», and rules for the application of national standards of the Russian Federation — GOST R 1.0−2004"Standardization in the Russian Federation. The main provisions"

Data on standard

1 was DEVELOPED by limited liability company «Energodiagnostika (LLC «Energodiagnostika»), the independent nonprofit organization «Scientific-research center of control and diagnostics of technical systems» (ANO «nits KD»)

2 SUBMITTED by the Technical Committee for standardization TC 132 «Technical diagnostics"

3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology dated 25 November 2010 No. 532-St

4 INTRODUCED FOR THE FIRST TIME


Information about the changes to this standard is published in the annually issued reference index «National standards», and the text changes and amendments — in monthly indexes published information «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in a monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet

Introduction

Currently has accumulated a large Arsenal of methods and means of nondestructive testing of residual stresses in the machinery and the stress-strain state of industrial facilities in operation. However, still no reference samples, designed to objectively compare the effectiveness of these methods and means are not defined terms and their application. Most control methods of mechanical stresses is based on the calibration samples at stretch. It does not include the scale factor and the cyclical nature of the load that generates the actual voltage (working and residual) on real hardware. Some experts believe that only volumetric stresses determine reliability and their values must be measured and taken into account in the calculation of equipment and structures strength. Others believe that only the surface and local stresses are decisive, referring to the fact that lesions develop in local areas of stress concentration and the surface layer of the metal.

In these circumstances, the necessary document establishes a classification of nondestructive methods of stresses and conditions of their application based on modern achievements of materials science and mechanics of destruction, taking into account different levels of locality of control voltages.

This standard specifies the classification of methods of nondestructive testing of mechanical stresses, which was based on the interaction of physical fields, the method used with the test object.

1 Scope

This standard applies to engineering products, pipelines, vessels and structures for various purposes and their elements made of steel and alloys, cast iron and other structural materials without restriction sizes and thicknesses, including a welded joint of any design.
This standard specifies the classification of methods of nondestructive testing of mechanical stresses, which was based on the interaction of physical fields, the method used with the test object.

2 Normative references

This standard uses the regulatory references to the following standards:

GOST R 52330−2005 non-destructive Control. Control of the stress-strain state of objects of industry and transport. General requirements

GOST 18353−79 nondestructive testing. Classification of types and methods

GOST R 27.002−2009 Reliability in engineering. Terms and definitions

GOST 27.004−85 Reliability engineering. System technology. Terms and definitions

Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or published annually by the information sign «National standards» published as on January 1 of the current year and related information published monthly indexes published in the current year. If the reference standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.

3 Symbols and abbreviations

This standard applies to the symbols and abbreviations in accordance with GOST R 52330, GOST R 27.002, GOST 27.004, GOST 18353.

4 Requirements on classification methods

4.1 Methods of nondestructive testing of mechanical stresses on the active klassificeret — with the creation of the object material external physical fields of a predetermined orientation, and passive, which uses a proprietary physical field that displays the internal energy of the object material.

4.2 According to the type of physical fields used methods of nondestructive testing of stress is divided into types: electric, magnetic, electromagnetic, mechanical, thermal.

4.3 Methods of each form of nondestructive testing klassificeret by the following features:

according to the method of obtaining initial information and algorithm of when the measured parameter of the physical field with the declared parameter voltages;

according to the method of calibration method (calibration samples, functional-theoretical, empirical) and the range of controlled voltages;

— locality control;

— the speed control;

— requirements to the objects of control, providing guaranteed method the accuracy of the measured parameter of the stress-strain state of the material;

— the characteristics of reliability of the used when the measured parameter of the physical field with the declared parameter voltages;

— the units and range of measurement;

— the peculiarities and sequence of operations in the conduct and processing of measurement results.

4.4 allowed classification of methods for individual signs set out in 4.3.

4.5. In the name of the method must be present classification criteria set out in 4.2.

4.6 it is permitted to use the combined methods of one or more types of non-destructive testing, classified according to various criteria set out in 4.1−4.3.

4.7 Classification table for methods of nondestructive testing of mechanical stresses with the associated explanations are given in Appendix A.

Annex a (recommended). Classification table for methods of nondestructive testing of mechanical stresses

Appendix A
(recommended)

A. 1 table 1 shows the format for classification table for methods of nondestructive testing of mechanical stresses.


Table 1 — classification table Format