Rubber, vulcanized or thermoplastic. Determination of dynamic properties - Torsion pendulum methods at low frequencies Ingestion-build-239834 BS EN 12941:1998+A2:2008 Respiratory protective

BS EN 12941:1998+A2:2008 Respiratory protective devices

suction apparatus

This document does not define any cleanliness limit values for specific components or systems

This British Standard is to be read in conjunction

it is intended that organizations implement an appropriate process and then have

Rubber, vulcanized or thermoplastic. Determination of dynamic properties - Torsion pendulum methods at low frequencies Ingestion-build-239834 BS EN 12941:1998+A2:2008 Respiratory protective1 Scope This part of ISO 4664 specifies methods, using a torsion pendulum, of determining the dynamic properties in shear, that is the shear modulus and mechanical damping, of vulcanized or thermoplastic rubbers over a wide temperature range at low frequencies in the range 0,1 Hz to 10 Hz and at comparatively low strains of less than 5 104.