MEAS275 - Introduction to Hardness Measurement

This course is an introductory course on the subject of hardness measurements. It is meant to be a broad overview, with the Rockwell hardness scale described with slightly more detail. It is meant to be the foundation for future courses on the topic.

The course outline is as follows:

• Introduction
• What is Hardness?
  • Scratch Hardness
  • Rebound Hardness
  • Indentation Hardness
• Standards
• Indentation Hardness Scales
  • Brinell Hardness
  • Vickers Hardness
  • Knoop Hardness
  • Rockwell Hardness
• Determination of Rockwell Hardness
  • The Indenter
  • The force profile
  • Dwell Time
  • The Depth Measurement
  • Calculation of Rockwell Hardness
• Sources of Uncertainty
  • Force Uncertainty
  • Depth Uncertainty
  • Dwell Time
  • Temperature
  • Thickness of Sample
  • Proximity to features
  • Other Sources
• Reference Blocks
• Traceability
• Summary

This course assumes some basic familiarity with measurement concepts and basic algebra.

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