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
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2011
- Accession Number
- ADA550862
Entities
People
- Noel A. Tracy
Organizations
- Universal Technology Corporation (United States)