Di latometer for use in tensile tests

An accurate dilatometer system is presented, which permits a simultaneous and automatic recording of sample volume change during a tensile test on a commercial tensile tester. Liquid displacements in the dilatometer capillary, which correspond to volume changes of the sample, are detected by means of a conductivity meter; tensile load is obtained from the testing machine itself; sample elongation is measured by means of an inductive displacement meter. Some experimental curves are reproduced and briefly discussed