ISO 14556:2023
Metallic materials — Charpy V-notch pendulum impact test — Instrumented test method
This document specifies a method of instrumented Charpy V-notch pendulum impact testing on metallic materials and the requirements concerning the measurement and recording equipment.
With respect to the Charpy pendulum impact test described in ISO 148-1, this test provides further information on the fracture behaviour of the product under impact testing conditions.
The results of instrumented Charpy test analyses are not directly transferable to structures or components and shall not be directly used in design calculations or safety assessments.
NOTE General information about instrumented impact testing can be found in References [1] to [5].
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 Characteristic values of force (see Figure 2)
3.2 Characteristic values of displacement (see Figure 2)
3.3 Characteristic values of impact energy
4 Symbols and abbreviated terms
5 Principle
6 Apparatus
6.1 Testing machine
6.2 Instrumentation and calibration
6.2.1 Traceable measurement
6.2.2 Force measurement
6.2.3 Calibration
6.2.4 Displacement measurement
6.2.5 Recording apparatus
6.2.6 Calibration interval
7 Test piece
8 Test procedure
9 Expression of results
9.1 General
9.2 Evaluation of the force-displacement curve
9.3 Determination of the characteristic values of force
9.4 Determination of the characteristic values of displacement
9.5 Determination of the characteristic values of impact energy
10 Test report
Annex A (informative) Examples of instrumented strikers
Annex B (informative) Example of support block for the calibration of a 2 mm striker
Annex C (informative) Formulae for the estimation of the proportion of ductile fracture surface
Annex D (normative) Instrumented Charpy V-notch pendulum impact testing of miniature test pieces
Bibliography
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Related Information
Similar Standards
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BS 131-1:1961
Methods for notched bar tests, The Izod impact test on metals
-
BS 131-4:1972
Notched bar tests, Calibration of pendulum impact testing machines for metals
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BS 131-5:1965
Notched bar tests, Determination of crystallinity
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BS 131-6:1998
Notched bar tests, Method for precision determination of Charpy V-notch impact energies for metals
Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 Characteristic values of force (see Figure 2)
3.2 Characteristic values of displacement (see Figure 2)
3.3 Characteristic values of impact energy
4 Symbols and abbreviated terms
5 Principle
6 Apparatus
6.1 Testing machine
6.2 Instrumentation and calibration
6.2.1 Traceable measurement
6.2.2 Force measurement
6.2.3 Calibration
6.2.4 Displacement measurement
6.2.5 Recording apparatus
6.2.6 Calibration interval
7 Test piece
8 Test procedure
9 Expression of results
9.1 General
9.2 Evaluation of the force-displacement curve
9.3 Determination of the characteristic values of force
9.4 Determination of the characteristic values of displacement
9.5 Determination of the characteristic values of impact energy
10 Test report
Annex A (informative) Examples of instrumented strikers
Annex B (informative) Example of support block for the calibration of a 2 mm striker
Annex C (informative) Formulae for the estimation of the proportion of ductile fracture surface
Annex D (normative) Instrumented Charpy V-notch pendulum impact testing of miniature test pieces
Bibliography