Cooperating organizations
National foreword
Foreword
Introduction
1. Scope
2. Normative references
3. Definitions
3.1 Industrial pendulum impact testing machine
3.2 Reference pendulum impact testing machine
3.3 Anvils
3.4 Supports
3.5 Striker
3.6 Centre of striker
3.7 Centre of percussion
3.8 Rated initial potential energy (rated energy) AN
3.9 Effective initial potential energy (potential
energy) Ap
3.10 Indicated absorbed energy (indicated energy) As
3.11 Effective energy absorbed (energy absorbed) Av
3.12 Reference test piece
3.13 Reference value
3.14 Geometry of the test piece
3.15 Base of the frame
4. Symbols and designations
5. Direct verification of the pendulum impact testing
machine
5.1 Machine framework
5.2 Pendulum
5.3 Framework/pendulum position
5.4 Test piece supports and anvils
5.5 Clearance between anvils and pendulum
5.6 Position of centre of percussion
5.7 Energy indicator
5.8 Potential energy (Ap)
5.9 Indicated energy error (As)
5.10 Friction losses
5.11 Impact velocity
6. Indirect verification of the pendulum impact testing
machine
6.1 Principle
6.2 Charpy V reference test pieces
6.3 Procedure
6.4 Repeatability and error of the pendulum impact
testing machine
6.5 Evaluation of the verification
7. Verification report
8. Intervals between indirect verifications
8.1 Direct verification
8.2 Indirect verification
Annex A (informative) Direct method of verifying certain
geometric properties using a jig
Annex B (informative) Guide to preparation and
characteristics of the Charpy V reference test
pieces
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references