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Title: Surface Texture of Fretting Fatigue Damaged Shot Peened Titanium

Abstract

Fretting fatigue damage occurs at the contact between two surfaces, when a static load perpendicular to the interface and a cyclic load parallel to the surfaces are present. The fretting fatigue damage occurring on the surface is known to be responsible for initiation of surface breaking cracks and dramatic reduction of fatigue life of the materials and components. Many premature failures of the engine components of advanced fighter aircrafts have been attributed to the fretting fatigue damage. Though fretting fatigue damage occurs at the surface, NDE techniques have limited success in detecting early stages of damage. This paper presents a methodology based on optical profiling of the surface to evaluate the progression of damage in fretting fatigue damaged specimens of shot peened Ti-6Al-4V. Surface topography measurements performed using a white light interference microscope were analyzed to identify the surface texture parameters sensitive to progressive damage. Results of the relation between the number of fretting fatigue cycles, surface texture parameters, residual stress and the changing microstructure are presented. Potential of the optical surface profiling as a nondestructive evaluation tool for characterization of the fretting fatigue damage is discussed.

Authors:
;  [1];  [2];  [3]
  1. Air Force Research Laboratory, Wright Patterson Air Force Base, OH 45433 (United States)
  2. University of Dayton Research Institute, 300 College Park, Dayton, OH 45467-0127 (United States)
  3. Air Force Institute of Technology, Wright Patterson Air Force Base, OH 45433 (United States)
Publication Date:
OSTI Identifier:
20798228
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 820; Journal Issue: 1; Conference: Conference on review of progress in quantitative nondestructive evaluation, Brunswick, ME (United States), 31 Jul - 5 Aug 2005; Other Information: DOI: 10.1063/1.2184684; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRACKS; DAMAGE; FAILURES; FATIGUE; INTERFACES; MICROSTRUCTURE; NONDESTRUCTIVE ANALYSIS; NONDESTRUCTIVE TESTING; OPTICAL MICROSCOPY; RESIDUAL STRESSES; SURFACES; TEXTURE; TITANIUM; TITANIUM ALLOYS; WEAR

Citation Formats

Martinez, S. A., Blodgett, M. P., Sathish, S., and Mall, S. Surface Texture of Fretting Fatigue Damaged Shot Peened Titanium. United States: N. p., 2006. Web. doi:10.1063/1.2184684.
Martinez, S. A., Blodgett, M. P., Sathish, S., & Mall, S. Surface Texture of Fretting Fatigue Damaged Shot Peened Titanium. United States. doi:10.1063/1.2184684.
Martinez, S. A., Blodgett, M. P., Sathish, S., and Mall, S. Mon . "Surface Texture of Fretting Fatigue Damaged Shot Peened Titanium". United States. doi:10.1063/1.2184684.
@article{osti_20798228,
title = {Surface Texture of Fretting Fatigue Damaged Shot Peened Titanium},
author = {Martinez, S. A. and Blodgett, M. P. and Sathish, S. and Mall, S.},
abstractNote = {Fretting fatigue damage occurs at the contact between two surfaces, when a static load perpendicular to the interface and a cyclic load parallel to the surfaces are present. The fretting fatigue damage occurring on the surface is known to be responsible for initiation of surface breaking cracks and dramatic reduction of fatigue life of the materials and components. Many premature failures of the engine components of advanced fighter aircrafts have been attributed to the fretting fatigue damage. Though fretting fatigue damage occurs at the surface, NDE techniques have limited success in detecting early stages of damage. This paper presents a methodology based on optical profiling of the surface to evaluate the progression of damage in fretting fatigue damaged specimens of shot peened Ti-6Al-4V. Surface topography measurements performed using a white light interference microscope were analyzed to identify the surface texture parameters sensitive to progressive damage. Results of the relation between the number of fretting fatigue cycles, surface texture parameters, residual stress and the changing microstructure are presented. Potential of the optical surface profiling as a nondestructive evaluation tool for characterization of the fretting fatigue damage is discussed.},
doi = {10.1063/1.2184684},
journal = {AIP Conference Proceedings},
number = 1,
volume = 820,
place = {United States},
year = {Mon Mar 06 00:00:00 EST 2006},
month = {Mon Mar 06 00:00:00 EST 2006}
}