Nondestructive Evaluation (NDE) Exploratory Development for Air Force Systems. Delivery Order 0001: Quick Reaction NDE and Characterization--Effects of Chemical Effects of Chemical Etching after Pre-Inspection Mechanical Cleaning on Fluorescent Penetrant Indications of Fatigue Cracks

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Abstract:

A study was conducted to gather data on the ability of etching to recover FPI crack indications degraded by mechanically cleaning cracked specimens made of Ti-6Al-4V and Inconel 718. The data showed that minimal etching does not sufficiently overcome the deleterious effects of certain mechanical cleaning methods to provide for a subsequent reliable fluorescent-penetrant inspection, and the amount of etching required to recover some crack indications would not be allowed on critical rotating engine parts.

Author(s):
Tracy, Noel A.
Author Organization(s):
UNIVERSAL TECHNOLOGY CORP DAYTON OH
Descriptive Note:
Final rept. 30 Jun 2009-31 Aug 2010
Pagination:
0078

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
UTC-S472-1-471, AFRL-RX-WP-TR-2011-4315
Contract/Grant Number(s):
FA8650-09-D-5602-0001
Task Number(s):
S3
Project Number(s):
4349
Monitor Series:
TR-2011-4315, AFRL-RX-WP
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.2.3_Share Knowledge and Situational Awareness; JCA_5.2_Understand; JCA_5.3_Planning; JCA_1.2.5_Lessons Learned; JCA_6_Net Centric; JCA_8_Building Partnerships; JCA_4.3_Maintain
Communities of Interest:
Space
Descriptor(s):
*ETCHING, *NONDESTRUCTIVE TESTING, *TITANIUM ALLOYS, CLEANING, CRACKS, INSPECTION, NICKEL ALLOY INCONEL, SUPERALLOYS
Field(s)/Group(s):
Metallurgy and Metallography, Printing and Graphic Arts
Keyword(s):
FPI(FLUORESCENT PENETRANT INSPECTION), INCONEL 718, MECHANICAL CLEANING, NDI(NONDESTRUCTIVE INSPECTION), PE62102F, WUAFRLSA103100
Report Date:
2011 Aug 01
Creation Date:
2011 Nov 17