Unusual Potential Drop During the Application of the Electrical Potential Method in a Fracture Mechanics Test

Volume 4, Issue 4 (July 1976)

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ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 9

Unusual Potential Drop During the Application of the Electrical Potential Method in a Fracture Mechanics Test

Bachmann, V
Engineer and division headmember of ASTM, Materials Laboratory, German Aerospace Research Establishment (DFVLR), Cologne,

Munz, D
Engineer and division headmember of ASTM, Materials Laboratory, German Aerospace Research Establishment (DFVLR), Cologne,

Abstract

The application of the electrical potential method during a fracture mechanics test can give rise to a potential drop if the maximum load during fatigue precracking is exceeded. The effect is only observed if the fatigue fracture surface is very rough. The reason is a contact of the fatigue fracture surface caused by a lateral deformation in the direction of the crack front.

Keywords:
fracture tests, electric potential, crack propagation

Paper ID: JTE10210J
DOI: 10.1520/JTE10210J
ASTM International is a member of CrossRef.

Author Title Unusual Potential Drop During the Application of the Electrical Potential Method in a Fracture Mechanics Test Symposium , 0000-00-00 Committee E08

		SEDL / Journals / Journal of Testing and Evaluation (JTE) / Citation Page Volume 4, Issue 4 (July 1976) Click here to download this paper now for $25 PDF (272K) View License Agreement ISSN: 1945-7553 CODEN: JTEVAB Page Count: 9 Unusual Potential Drop During the Application of the Electrical Potential Method in a Fracture Mechanics Test Bachmann, V Engineer and division headmember of ASTM, Materials Laboratory, German Aerospace Research Establishment (DFVLR), Cologne, Munz, D Engineer and division headmember of ASTM, Materials Laboratory, German Aerospace Research Establishment (DFVLR), Cologne, Abstract The application of the electrical potential method during a fracture mechanics test can give rise to a potential drop if the maximum load during fatigue precracking is exceeded. The effect is only observed if the fatigue fracture surface is very rough. The reason is a contact of the fatigue fracture surface caused by a lateral deformation in the direction of the crack front. Keywords: fracture tests, electric potential, crack propagation Paper ID: JTE10210J DOI: 10.1520/JTE10210J ASTM International is a member of CrossRef. Author Title Unusual Potential Drop During the Application of the Electrical Potential Method in a Fracture Mechanics Test Symposium , 0000-00-00 Committee E08