TY - GEN
T1 - Study of variability and failure in al 7075-t6 under ultrasonic fatigue
AU - Schichtel, Jacob J.
AU - Datta, Siddhant
AU - Chattopadhyay, Aditi
N1 - Funding Information:
This research is supported by the National Defense Science and Engineering Graduate (NDSEG) Fellowship Program.
Publisher Copyright:
© 2021, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2021
Y1 - 2021
N2 - Recent research work investigating fatigue in ultra-high cycle regimes (on the order of 109 cycles) has challenged the conventional understanding of fatigue crack initiation and endurance limits. Aluminum alloys have been studied in these ultra-high regimes showing the expected S-N curves with increased fatigue life correlating to decreasing load amplitude, but to further understand how damage mechanisms change across different regimes, more work has to be done to analyze the governing mechanisms for fatigue crack initiation in the ultra-high cycle regime. Limited experimental evidence elucidates failure characteristics of aerospace grade aluminum alloys subjected to ultra-high cycle fatigue; hence a detailed ultra-high cycle fatigue study has been presented on Al 7075-T6 using fully reversed tension-compression (R = −1) with a focus on fatigue-fracture behavior through electron microscopy analysis and sensitivity studies using finite element analysis-based probability studies.
AB - Recent research work investigating fatigue in ultra-high cycle regimes (on the order of 109 cycles) has challenged the conventional understanding of fatigue crack initiation and endurance limits. Aluminum alloys have been studied in these ultra-high regimes showing the expected S-N curves with increased fatigue life correlating to decreasing load amplitude, but to further understand how damage mechanisms change across different regimes, more work has to be done to analyze the governing mechanisms for fatigue crack initiation in the ultra-high cycle regime. Limited experimental evidence elucidates failure characteristics of aerospace grade aluminum alloys subjected to ultra-high cycle fatigue; hence a detailed ultra-high cycle fatigue study has been presented on Al 7075-T6 using fully reversed tension-compression (R = −1) with a focus on fatigue-fracture behavior through electron microscopy analysis and sensitivity studies using finite element analysis-based probability studies.
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M3 - Conference contribution
AN - SCOPUS:85100317334
SN - 9781624106095
T3 - AIAA Scitech 2021 Forum
SP - 1
EP - 11
BT - AIAA Scitech 2021 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
Y2 - 11 January 2021 through 15 January 2021
ER -