EXTREMELY SMALL MATERIAL TESTING INSTRUMENT

摘要

PURPOSE:To measure the deformation of the surface of a sample on which a very small load is placed in real time by detecting the load value of a variable loading means which applies a very small load optionally and the quantity of displacement of an indenter. CONSTITUTION:The sample 7 is positioned in the center of an objective 17, a sample table 8 is moved up and down over a look at the sample through the objective 16 to find the surface of the sample 7, and then a position of the sample 7 to be tested is moved to the center of the indenter 6 while held on the same horizontal plane. A current in a loading direction flows through an electromagnetic coil 3 on the start of the test and the indenter 6 is pressed down. When it is decided that there is no space between the tip of the indenter 6 and the surface of the sample 7, the current movement point of the indenter 6 is regarded as a 0 point and the movement distance of the indenter 6 from it is regarded as the quantity of deformation of the sample 7. A specific test load is placed even after the 0 point is detected to obtain information on the quantity of the deformation process on the surface of the tested body is stored in a measurement controller 12.