A Testing Concept Offering Versatility and Flexibility
The ZHN universal nanomechanical tester is derived from ASMEC's proven nanoindenter technology. In this first-time development, two measuring heads are combined in the normal (nanodindenter principle) and lateral (scratch tester principle) directions, operating completely independently of each other with nanometer resolution. Lateral force-displacement curves can now be measured for the first time, allowing more material parameters to be obtained than was previously possible (see Typical Applications). This includes measurement of the lateral stiffness and purely elastic lateral deformation of the specimen.
The 2-column load frame features single central lead-screw drive and precision guidance, ensuring stiffer frame design, while the indenter axis is located exactly in the movement axis. No tilting moment occurs and Abbe errors are eliminated. Device stiffness is more than 106 N/m, eliminating the need for correction and greatly simplifying calibration of the area function.
In contrast to instruments by other manufacturers, both measuring heads operate in both tensile and compression directions, enabling indentation tests with a superimposed oscillation as well as cyclic fatigue tests.