Advanced Life Analysis Methods. Volume 1. Cracking Data Survey and NDI (Nondestructive Inspection) Assessment for Attachment Lugs
Abstract
Results of a survey of cracking data and an evaluation of NDI capability for aircraft attachment lugs are presented. This survey and evaluation are part of an overall effort involving fatigue testing and analyses to develop the design criteria and analytical methods necessary to ensure the damage tolerance of pin-loaded lugs. Cracking data from coupon and full scale fatigue tests and from service failures are summarized in terms of causes of initial cracking and final failure; initial crack type, shape, location and multiplicity; and final critical crack size. Existing NDI capability is reviewed, and an inspectable initial flaw size criterion for lugs is proposed, subject to experimental verification. Originator furnished keywords include: Attachment Lugs, Cracking, Aircraft, NDI, Inspection, Damage Tolerance, Initial Flaws, Fatigue, Stress Corrosion, Design Requirements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1984
- Accession Number
- ADA150419
Entities
People
- K. Kathiresan
- T. M. Hsu
- T. R. Brussat