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Objectives :
Objectives :
To describe hardness of material.
To perform Brinell hardness test for the determination of hardness.
Experimental Video:
Experimental Video:
Video elucidate :
Basic principle
Testing Machine
Practical procedure
Ref- MaterialsScience2000 (2013) Brinell Hardness Test.
Available at: https://youtu.be/RJXJpeH78iU (Accessed: 16 Aug 2020).
Test Principle :
Test Principle :
Equipment Operating Procedure :
Equipment Operating Procedure :
Place the specimen on the anvil.
Raise the anvil along with the specimen so that the specimen touches the indenter.
Gradually apply load by means of handle provided on the right side of the instrument.
Duration of application of the load should be 10 to 30 sec. [ for ferrous metals 10 sec, softer metal 30 sec]
Remove the load and Measure the diameter of impression on the test specimen by microscope fitted with a scale.
Calculate Brinell hardness number by using fromula, BHN = Load Appplied / Area of indentation
Observations & Calcutation :
Observations & Calcutation :
Observations:
Observations:
Applied load (P) in Kgf
Diameter of Indenter (D) in mm
Diameter of Indentation (d) in mm
Duration in which load applied (Sec)
Conclusion:
Conclusion:
Hardness of two diffrent materials is compaired by using Brinell hardness test experiment.
Questions:
Questions:
Additional Resources:
Additional Resources:
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