ULTRASONIC NONDESTRUCTIVE MEASUREMENT OF CASE DEPTH.

Abstract

Results indicate that pulse echo structure scattering technique might be applied successfully to direct case depth measurements of chromium-molybdenum steels within the range of a few thousandths to several inches of case depth. Case hardness might be measured using a pulse echo surface mode velocity technique within limits of area investigated. In addition the bracketing of ultrasonic data obtained during the investigations indicated that several techniques for ultrasonic determinations of hardness and case depth are possible. Ultrasonic behavior relationships in chromium-molybdenum steels are given.

Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1957
Accession Number
AD0643199

Entities

People

  • Andrew M. Murdoch
  • Richard A. Wilson

Tags

DTIC Thesaurus Topics

  • Chromium
  • Elements
  • Group 6 Elements
  • Hardness
  • Measurement
  • Metals
  • Molybdenum
  • Physical Properties
  • Refractory Metals
  • Scattering

Fields of Study

  • Physics

Readers

  • Radar Systems Engineering.
  • Structural Health Monitoring of Composite Structures.
  • Wave Propagation and Nonlinear Chaotic Dynamics.