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Analysis of automated fatigue crack growth rate data

Technical Report:

Abstract

Automated crack length measuring methods have largely replaced manual techniques in many applications. They require little operator time and have the additional feature of being able to collect large amounts of data. A method for compressing a large number of crack length observations into a smaller number of cock length estimates suitable for calculating the fatigue crack growth rate is described and verified using a simulation technique. With this method, the effective crack length measuring precision is improved and the amount of crack growth rate data obtainable from a single specimen is increased. Test times for threshold testing can also be potentially decreased. This method has been incorporated into a computer program, SAeRMAe, currently in use in VTT Metals Laboratory.
Authors:
Marquis, G [1] 
  1. Technical Research Centre of Finland, Espoo (Finland). Metals Lab.
Publication Date:
Dec 31, 1992
Product Type:
Technical Report
Report Number:
VTT-PUB-108
Reference Number:
SCA: 420500; 990200; PA: FI-92:003426; SN: 93000918035
Resource Relation:
Other Information: PBD: 1992
Subject:
42 ENGINEERING; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; CRACK PROPAGATION; MEASURING METHODS; FATIGUE; CRACKS; COMPUTERIZED SIMULATION; COMPUTER CODES; MATERIALS TESTING; LENGTH; 420500; 990200; MATHEMATICS AND COMPUTERS
OSTI ID:
10111715
Research Organizations:
Technical Research Centre of Finland, Espoo (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE93752853; ISBN 951-38-4226-6; TRN: FI9203426
Availability:
OSTI; NTIS
Submitting Site:
FI
Size:
30 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Marquis, G. Analysis of automated fatigue crack growth rate data. Finland: N. p., 1992. Web.
Marquis, G. Analysis of automated fatigue crack growth rate data. Finland.
Marquis, G. 1992. "Analysis of automated fatigue crack growth rate data." Finland.
@misc{etde_10111715,
title = {Analysis of automated fatigue crack growth rate data}
author = {Marquis, G}
abstractNote = {Automated crack length measuring methods have largely replaced manual techniques in many applications. They require little operator time and have the additional feature of being able to collect large amounts of data. A method for compressing a large number of crack length observations into a smaller number of cock length estimates suitable for calculating the fatigue crack growth rate is described and verified using a simulation technique. With this method, the effective crack length measuring precision is improved and the amount of crack growth rate data obtainable from a single specimen is increased. Test times for threshold testing can also be potentially decreased. This method has been incorporated into a computer program, SAeRMAe, currently in use in VTT Metals Laboratory.}
place = {Finland}
year = {1992}
month = {Dec}
}