Accession Number : AD0771331

Title :   Advanced Concepts in Structural Materials and Testing,

Descriptive Note : Semiannual technical rept. 1 Jun-30 Nov 73,

Corporate Author : PURDUE UNIV LAFAYETTE IND SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s) : Schwartz,Richard J. ; Winchell,Peter G. ; Newhouse,Vernon L.

Report Date : DEC 1973

Pagination or Media Count : 87

Abstract : The work performed under this program can be subdivided into two areas. The first deals with the application of random signal correlation techniques to ultrasonic flaw detection in solids and the second deals with the development of modulated microstructure heat treatable steel. The portion of this work dealing with the application of random signal correlation techniques to ultrasonic flaw detection in solids consists of applying random signal radar techniques to ultrasonic flaw detection and determining the consequent improvements in range and resolution over existing systems. The objective of the modulated microstructure work is to develop an alloy complex which combines high strength and significant fracture toughness. The basic concept is to alternate layers of high-strength martensite with tough and softer austenite in a complex which can be hardened to strength of 400 Ksi (2.8 GN/sq m) and softened for fabrication by conventional heat treatment. (Modified author abstract)

Descriptors :   *Ultrasonic tests, *Defects(Materials), *Steel, Detectors, Radar, Sound, Noise, Signals, Sensitivity, Fracture(Mechanics), Toughness, Numerical analysis, Additives, Hardness, Tensile properties, Nickel, Vanadium, Chromium, Manganese, Tungsten, Heat treatment

Subject Categories : Metallurgy and Metallography
      Test Facilities, Equipment and Methods
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE