The mechanism for releasing the enn from its initial position shall be capable of operating freely and releasing the pendulum without any initial jerk, delay or transverse vibration.Ī version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. Radius of curvature of the anvils: If this mechanism also includes a braking system, means shall be provided to prevent the brake being applied accidentally.
The total absorbed energy consists of: Consequently, the documentation prepared when the machine is installed shall prove that the mass of the foundation is at least 40 times that of the pendulum which shall also be given in the documentation. We use cookies to improve your browsing experience.ĬONTRA EL POSTMODERNISMO ALEX CALLINICOS PDF Method of test - Part 2: The resolution r of the indicator is obtained from the ratio of the pointer thickness and the minimum distance between the centres of two adjacent graduation marks. This standard is also applicable to reference pendulum impact testing machines, the geometrical characteristics of which are defined in Annex B. This European Standard takes into account the total energy absorbed by the fracture of the test piece. Size px x x x x An amendment to BS will be published simultaneously with this standard. The plane of the supports is perpendicular to the plane of the anvils see Figure 1 3. The plane of the anvils is perpendicular to the plane of the supports see Figure 1. If more than 2 energy levels are verified, the additional levels shall be uniformly distributed in the range of application and as a function of the available reference test pieces. Verification of pendulum impact testing machines.
Corresponding national standard in UK Italy Belgium Sweden ISO DIN 51 NFA BS 8?. BS EN Charpy Impact Test on Metallic Materials Part 2: Method for the Verification of Impact Testing Machines. DIN EN CHARPY NOTCHED BAR IMPACT TEST ON METALLIC MATERIALS VERIFICATION OF PENDULUM IMPACT TESTING MACHINES.
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