硬度测量标准.ppt

文档介绍：Determination of indentation hardness by means of a durometer
ISO 868:2003
Brinell hardness
Vickers hardness
Rockwell hardness
Barcol hardness
Mohs hardness
Shore
hardness
·The definition of shore hardness
·The classify of shore durometer
·Test principle
·Test specimens
·Test procedure
·Calibration
Definition
Shore hardness is a measure of the indentation resistance of elastomeric or soft plastic materials based on the depth of ration of a conical indentor. Hardness values range from 0 (for full ration) to 100 (for no ration).
Apparatus
Principle
A specified indenter is forced into the test material under specified conditions and the depth of ration measured .
The indentation hardness is inversely related to the ration and is dependent on the modulus of elasticity and the viscoelastic properties of the material .