This system consists of sonic sonde, magnetic locator sub, gamma ray tool, depth system, surface preprocessing unit, data acquisition interface, PC486 and thermal plotter.

The orientation and crystallinity of the PET fibers were measured by sonic and X-ray diffraction. The feature of modulus-strain curves were discussed from the fiber structure and applications.

The spinnability and drawability of PMMA/PET blends were studied. The orientation and crystallization structure were measured by sonic velocity method and X-ray diffraction respectively.