Human vs machines: hardness testing with the AMH55

Leco, St. Joseph, Mich., pit seven humans of varying metallographic experience against the AMH55, its cornerstone automated hardness testing software to see if it really provides that much of an advantage over manual methods.

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  Video description In addition to the effects of particles in the periphery of the spray stream resulting from poorly classified materials or non-optimized process parameters, consideration should be given to particles in the spray stream and how variations in the degree of melting and velocity affect coating structure.