Accession Number : AD0421915

Title :   HEATED ELEMENT SECTIONING OF PLASTIC CORE LINERS AND CORE BARRELS,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Smith,R. J. ; Nunes,L.

Report Date : OCT 1963

Pagination or Media Count : 9

Abstract : The core boring in Deep Ocean subtask of the overall Structures in Deep Ocean program necessitates procuring undistrubed soil samples from the sea floor to test their engineering properties. Many gravity and piston oceanographic coring tools in use retain the sediment obtained within plastic liners or directly in a plastic core barrel. Some difficulty has been experienced by investigators in maintaining samples in undisturbed condition during the process of sectioning the plastic prior to testing, ususally done by means of pipe-cutters, saws, or different types of bladed tools. Experimentation with a heated cutting element attached to a gun-type soldering iron has shown that plastic tubing can be efficiently and rapidly cut by this means to very close tolerances. This procedure is now being routinely applied to soil analysis work. (Author)

Descriptors :   (*PLASTICS, OCEANOGRAPHIC EQUIPMENT), (*OCEAN BOTTOM SAMPLING, TEST METHODS), CUTTING TOOLS, PIPES, SOIL MECHANICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE