Accession Number : AD0825254

Title :   NONDESTRUCTIVE EVALUATION OF MATERIAL PROPERTIES THROUGH USE OF A THERMAL INSPECTION SYSTEM.

Descriptive Note : Rept. for Mar 64-Sep 65,

Corporate Author : AUTOMATION INDUSTRIES INC BOULDER CO RESEARCH DIV

Personal Author(s) : Maley, D. R. ; Apple, W. R. ; Card, J. B. ; Crossan, M. V. ; Maley, S. W.

Report Date : NOV 1967

Pagination or Media Count : 199

Abstract : A study was performed on thermal nondestructive evaluation of materials. Its purpose has been to establish sensitivity and resolution criteria for a group of material parameters; these parameters were chosen as being susceptible to thermal evaluation during a feasibility study on a previous contract. Among the parameters chosen are: bond quality in honeycomb and laminates, thickness of thin materials and spot weld quality. Three thermal techniques utilizing the diffusion of heat in an opague solid have been used for the studies on this program, the scan heat, the static heat, and the scan static heat techniques. These test methods, and the results achieved by using them in evaluating the above mentioned material parameters, are described in this report. Also, described is a prototype system for emissivity correction of the radiometer signals. (Author)

Descriptors :   (*NONDESTRUCTIVE TESTING, HEAT TRANSFER), (*THERMAL ANALYSIS, NONDESTRUCTIVE TESTING), BONDED JOINTS, LAMINATES, HONEYCOMB CORES, SPOT WELDS, THICKNESS, SCANNING, RADIOMETERS, CRACKS, DEFECTS(MATERIALS), COATINGS, POROSITY, TEMPERATURE.

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE