Accession Number : ADA119632

Title :   Acoustic Emissions from Polycrystalline Ice,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : St Lawrence,William F ; Cole,David M

PDF Url : ADA119632

Report Date : Aug 1982

Pagination or Media Count : 21

Abstract : The acoustic emission response from fine-grained polycrystalline ice subjected to constant compressive loads was examined. A number of tests were conducted with the nominal stress ranging from 0.8 to 3.67 MPa at a temperature of -5 C. The acoustic emission response was recorded and the data are presented with respect to time and strain. The source of acoustic emissions in ice is considered in terms of the formation of both microfractures and visible fractures that develop without catastrophic failure of the ice. A model to describe the acoustic emission response is developed. (Author)

Descriptors :   *Ice, *Acoustic emissions, Polycrystalline, Compression, Loads(Forces), Cracking(Fracturing), Response, Strain(Mechanics), Stresses, Statistical analysis

Subject Categories : Snow, Ice and Permafrost
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE