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  • BSI
    BS 131-4:1972 Notched bar tests - Calibration of pendulum impact testing machines for metals
    Edition: 1972
    $281.30
    / user per year

Description of BS 131-4:1972 1972

1.1 This Part of this British Standard gives methods for the inspection, calibration and verification of Izod pendulum impact testing machines, and includes instructions for certificates of calibration and verification. The methods cover the following elements of the machine, which are illustrated in Figure 1:

  1. machine framework (i.e. the structure supporting the pendulum, excluding only the foundation);
  2. pendulum and striker;
  3. test piece supports;
  4. indicating equipment (e.g. scale and friction pointer).

1.2 In applying the methods all the absorbed energy indicated by the machine is attributed to the fracturing of the test piece.

NOTE It is known that energy is absorbed other than by fracturing the test piece. It is assumed that this energy is absorbed by items such as the test piece supports, the machine foundation and framework, the pendulum and striker, translation of the broken part of the test piece and drag of a partially broken test piece. This energy is not determined as suitable methods and apparatus have not yet been developed for measuring either its total or constituent parts.



Inspection, calibration and verification of the machines in Parts 1, 2 and 3. Accuracy of gauges used in checking components, in an appendix.

Standard NumberBS 131-4:1972
TitleNotched bar tests - Calibration of pendulum impact testing machines for metals
StatusConfirmed
Publication Date1972-03-30
Replaced ByBS EN 10045-2:1993
Technically Equivalent National Standard OfISO/R 442
DescriptorsImpact testing, Inspection, Calibration, Bars (materials), Verification, Mechanical testing, Pendulums, Metals, Supports, Testing conditions, Test equipment
ICS77.040.10 Mechanical testing of metals
CommitteeISE/101
ISBN0 580 07040 9
PublisherBSI
Pages12

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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