Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Steven E. Olson"'
Autor:
Keith A. Vehorn, Steven E. Olson, Kevin Brown, Rani W. Sullivan, Vipul Ranatunga, Leeanna Meadows
Publikováno v:
The Journal of Strain Analysis for Engineering Design. 52:410-421
An optical fiber–based full-field strain measurement technique was used to investigate delamination growth in laminated composites. An experimental setup to load the test samples under idealized modes of delamination was used to investigate the abi
Autor:
Mark M. Derriso, Charles D. McCurry, Christine M. Schubert Kabban, Martin P. DeSimio, Steven E. Olson
Publikováno v:
Structural Health Monitoring. 13:591-600
This article was originally presented as a keynote address at the Ninth International Workshop on Structural Health Monitoring with the intent of provoking discussions relating to the transformation of aircraft maintenance practices by exploiting opp
Publikováno v:
Structural Health Monitoring. 11:577-588
This study presents a new impact localization technique that can pinpoint the location of an impact event within a complex structure using a time-reversal concept, surface-mounted piezoelectric transducers, and a scanning laser Doppler vibrometer. Fi
Autor:
Michael J. Shepard, Allan H. Clauer, Richard D. Tenaglia, R. A. Brockman, Kristina Langer, William R. Braisted, Steven E. Olson
Publikováno v:
International Journal of Fatigue. 36:96-108
The use of laser shock peening (LSP) to enhance the fatigue resistance of metals offers several potential advantages over more conventional surface enhancement techniques such as shot peening, including deeper penetration of the residual stresses, mo
Autor:
Martin P. DeSimio, Steven E. Olson, Hoon Sohn, Hyun-Jun Park, Eric D. Swenson, Jinyeol Yang, Debaditya Dutta
Publikováno v:
Composites Science and Technology. 71:1250-1256
This study explores the feasibility of using a non-contact guided wave imaging system to detect hidden delamination in multi-layer composites. The study is conducted in two phases. In the first phase, Lamb waves are excited by a lead (Pb) Zirconate T
Publikováno v:
Structural Health Monitoring. 7:265-270
Military and commercial aerospace organizations are exploring structural health monitoring (SHM) systems to reduce maintenance costs and to verify the integrity of structural components exposed to harsh conditions. This technical note considers the u
Publikováno v:
Journal of Vibration and Acoustics. 129:730-738
Structural health monitoring techniques are being developed to reduce operations and support costs, increase availability, and maintain safety of current and future air vehicle systems. The use of Lamb waves, guided elastic waves in a plate, has show
Autor:
Steven E. Olson, Kristina Langer, R. A. Brockman, Michael E. Fitzpatrick, William R. Braisted, Thomas J. Spradlin
Publikováno v:
The Journal of Engineering (2015)
Finite element modeling can be a powerful tool for predicting residual stresses induced by laser peening; however the sign and magnitude of the stress predictions depend strongly on how the material model captures the high strain rate response. Altho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee3abf0cb9a6274e6bf529d1cfca5dfd
http://digital-library.theiet.org/content/journals/10.1049/joe.2015.0118
http://digital-library.theiet.org/content/journals/10.1049/joe.2015.0118
Publikováno v:
Structural Health Monitoring. 5:173-183
To reduce costs and meet turn-around goals of future space vehicles, structural health monitoring systems are needed to assess the health of the entire vehicle structure within hours of the completed mission. In particular, the thermal protection sys
Publikováno v:
Intermetallics. 12:1-9
Gamma titanium aluminide (γ-TiAl) alloys have been under development for use in rotating components for gas turbine engines. Detailed three-dimensional (3D) grain-level finite element models are being developed to predict damage initiation and accum