NEN-EN-ISO 148-2:2006 Ontw. en

Metalen - Kerfslagproef volgens Charpy - Deel 2: Kalibratie van meettoestellen

  • Deze norm is ingetrokken sinds 19-02-2009


Over deze norm

Status Ingetrokken
Aantal pagina's 23
Gepubliceerd op 01-05-2006
Taal Engels
This part of ISO 148 covers the verification of the constructional elements of pendulum-type impact testing machines. It is applicable to machines with 2 mm or with 8 mm strikers used for pendulum impact tests carried out, for instance, in accordance with ISO 148-1. It can analogously be applied to pendulum impact testing machines of other capacities and of different design. Impact machines used for industrial, general or research laboratory testing of metallic materials in accordance with this part of ISO 148 are referred to as industrial machines. Those with more stringent requirements are referred to as reference machines. Specifications for the verification of reference machines are found in ISO 148-3. This part of ISO 148 describes two methods of verification. a) The direct method, which is static in nature and involves measurement of the critical parts of the machine to ensure that it meets the requirements of this part of ISO 148. Instruments used for the verification and calibration shall be traceable to national standards. The direct method shall be used when a machine is being installed or repaired, or if the indirect method gives a non-conforming result. b) The indirect method, which is dynamic in nature, and which uses reference test pieces to verify points on the measuring scale. A pendulum impact testing machine is not in compliance with this part of ISO 148 until it has been verified by both the direct and indirect methods (see Clause 7). The requirements for the reference test pieces are found in ISO 148-3.


ICS-code 77.040.10
Nederlandse titel Metalen - Kerfslagproef volgens Charpy - Deel 2: Kalibratie van meettoestellen
Engelse titel Metallic materials - Charpy pendulum impact test - Part 2: Verification of testing machines
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