Location

La Jolla, CA

Start Date

1-1-1998 12:00 AM

Description

Current research efforts have concentrated on developing an instrumentation approach to test green-state powder metal (P/M) compacts by exploiting the conductivity or resistivity variations in the samples under test [1]. A novel multi-pin sensor is used to inject current in various directions through an array of outer contacts, and a matrix of 7 by 7 pointed needles record the voltage response of the P/M sample. Initial tests with production samples as well as a few controlled samples have shown good sensitivity and the ability to detect flaws of various sizes [6].

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

17B

Chapter

Chapter 6: Materials Characterization

Section

Materials Properties

Pages

1427-1434

DOI

10.1007/978-1-4615-5339-7_184

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Numerical Solution of a Direct 3D Electrostatic Resistivity Test of Green-State Metal Powder Compacts

La Jolla, CA

Current research efforts have concentrated on developing an instrumentation approach to test green-state powder metal (P/M) compacts by exploiting the conductivity or resistivity variations in the samples under test [1]. A novel multi-pin sensor is used to inject current in various directions through an array of outer contacts, and a matrix of 7 by 7 pointed needles record the voltage response of the P/M sample. Initial tests with production samples as well as a few controlled samples have shown good sensitivity and the ability to detect flaws of various sizes [6].