Determining the Strength of Your Materials
We have two techniques available to us.
Telebrineller. A tiny dent is made simultaneously in the material being examined and on the surface of a bar of known hardness, using a hammer and ball bearing apparatus. The diameters of the dents are measured, and the difference in their sizes determines the hardness value of the tested material.
Ultrasonic Contact Impedance (UCI) A diamond indenter vibrating at ultrasonic frequency is pressed into the material being examined. As it penetrates the material, the frequency of the vibration shifts proportionally. The instrument is calibrated to the frequency shift found during the test of a known hardness standard, and thus the hardness of the tested material can be inferred.
Telebrineller deforms a much larger surface area of material, so any errors due to steel crystal structure are minimized.
UCI leaves a very small testing defect on the surface of machined parts.
UCI may not respond well to the part to be tested due to thickness or the material’s elasticity.
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Need Hardness Testing?
403.483.7571 / 587.438.9857
P.O. Box 68161