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Titolo:
A NOVEL MULTIPROBE RESISTIVITY APPROACH TO INSPECT GREEN-STATE METAL-POWDER COMPACTS
Autore:
STANDER J; PLUNKETT J; MICHALSON W; MCNEILL J; LUDWIG R;
Indirizzi:
WORCESTER POLYTECH INST,DEPT ELECT & COMP ENGN WORCESTER MA 01609
Titolo Testata:
Journal of nondestructive evaluation
fascicolo: 4, volume: 16, anno: 1997,
pagine: 205 - 214
SICI:
0195-9298(1997)16:4<205:ANMRAT>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
FINITE-ELEMENT;
Keywords:
GREEN-STATE POWDER METALLURGY COMPACTS; RESISTIVITY TESTING; MULTIPROBE SENSOR;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
J. Stander et al., "A NOVEL MULTIPROBE RESISTIVITY APPROACH TO INSPECT GREEN-STATE METAL-POWDER COMPACTS", Journal of nondestructive evaluation, 16(4), 1997, pp. 205-214

Abstract

This paper describes a new instrumentation approach to the nondestructive testing of green-state powdered metallurgy components. These samples are likely to generate surface-breaking and subsurface defects prior to sintering. Exploiting the principles of electric resistivity or potential drop measurements in solids, a system is configured which iscapable of recording surface voltage distributions due to impressed current inputs. At the heart of this novel testing procedure is a multiple-pin sensor which allows for flexible measurement conditions in order to cover wide surface areas. Practical tests with production samples compare well with both analytical and numerical modeling techniques in predicting surface voltage distributions. Furthermore, initial studies of surface-breaking flaws exhibit excellent defect detectability.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 05:06:15