Development of Alternating Current Potential Drop (ACPD) Procedures for Crack Detection in Aluminum Aircraft Panels.

Jablonski, David A.; John A. Volpe National Transportation Systems Center (U.S.)

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Development of Alternating Current Potential Drop (ACPD) Procedures for Crack Detection in Aluminum Aircraft Panels.

1993-12-01
By Jablonski, David A.

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English

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Details:

Creators:

Jablonski, David A.
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.)
Subject/TRT Terms:

[+]

AC Potential Drop Airframes Alternating Current Crack Growth Cracking Fatigue Fatigue (Mechanics) Fracture Mechanics Inspection R-curve
Publication/ Report Number:

DOT-VNTSC-FAA-93-09 ; DOT-FAA-CT-93-76

DOT-VNTSC-FAA-93-09 ; DOT-FAA-CT-93-76 Less -
Resource Type:

Tech Report
Corporate Publisher:

United States. Department of Transportation. Federal Aviation Administration
Abstract:

The Alternating Current Potential Drop (ACPD) method is investigated as a means of making measurements in laboratory experiments on the initiation and growth of multiple site damage (MSD) cracks in a common aluminum alloy used for aircraft construction. Procedures for instrumentation MSD test specimens are recommended. The ACPD method is found to be capable of (1) detecting crack initiation at a crack length of the order of 1mm; (2) monitoring crack propagation at a resolution of the order of 5um; and (3) providing an indirect measurement of crack extension in R-curve type tests of fastener hold details.
Content Notes:

Introduction, Experimental procedure, Results and discussion, Summary, Appendices, References
Format:

PDF
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:5117cfac95c876dde0660acdab4b0ae9cbc4ce579b5b851d6c2a57bd45fce527
Download URL:

https://rosap.ntl.bts.gov/view/dot/9439/dot_9439_DS1.pdf
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Development of Alternating Current Potential Drop (ACPD) Procedures for Crack Detection in Aluminum Aircraft Panels.

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