TY - GEN A1 - Liu, W. C. A1 - Dong, J. A1 - Zhang, Ping A1 - Zhai, Chun-Quan A1 - Ding, W. J. T1 - Effect of Shot Peening on Surface Characteristics and Fatigue Properties of T5-treated ZK60 Alloy Y1 - 2009 ER - TY - GEN A1 - Liu, W. C. A1 - Dong, J. A1 - Zhang, Ping A1 - Yao, Z. Y. A1 - Zhai, Chun-Quan A1 - Ding, W. J. T1 - High cycle fatigue behaviour of as-extruded ZK60 magnesium alloy Y1 - 2009 ER - TY - GEN A1 - Dong, Shijun A1 - Aul, Christopher A1 - Gregoire, Claire A1 - Cooper, Sean P. A1 - Mathieu, Olivier A1 - Petersen, Eric L. A1 - Rodriguez, Jose A1 - Mauß, Fabian A1 - Wagnon, Scott W. A1 - Kukkadapu, Goutham A1 - Pitz, William J. A1 - Curran, Henry J. T1 - A comprehensive experimental and kinetic modeling study of 1-hexene T2 - Combustion and Flame N2 - It is important to understand the low-temperature chemistry of 1-hexene as it is used as a representative alkene component in gasoline surrogate fuels. Ignition delay times (IDTs) of 1-hexene measured in rapid compression machines (RCMs) can be used to validate its low-temperature chemistry. However, volume history profiles are not available for published RCM IDT data. This has restricted the validation of the low-temperature chemistry of 1-hexene at engine-relevant conditions (i.e. at low temperatures and high pressures). Thus, new RCM IDT data with associated volume history profiles are needed. In this study, both an RCM and a high-pressure shock tube (ST) are employed to measure IDTs of 1-hexene at equivalence ratios of 0.5, 1.0 and 2.0 in ‘air’ and at pressures of 15 and 30 atm. A cool-flame (first stage) and total (second stage) ignition was observed in the RCM experiments. Moreover, carbon monoxide and water versus time histories produced during 1-hexene oxidation at highly diluted conditions were measured in a ST. A new detailed chemical kinetic model describing 1-hexene oxidation is proposed and validated using these new measured data together with various experimental data available in the literature. The kinetic model can predict well the auto-ignition behavior and oxidation processes of 1-hexene at various conditions. The rate constants and branching ratio for hydroxyl radical addition to the double bond of 1-hexene are particularly important and discussed based on the experimental and theoretically calculated results from previous studies as well as validation results from jet-stirred reactor (JSR) species profiles. Flux and sensitivity analyses are performed to determine the important reaction classes for 1-hexene oxidation and show that the reactions associated with hydroxy radical addition to the double bond contribute most to the low-temperature reactivity of 1-hexene. In the negative temperature coefficient (NTC) regime, the isomerization of hexenyl-peroxy radicals promotes fuel reactivity due to its associated chain branching pathways. Y1 - 2021 U6 - https://doi.org/10.1016/j.combustflame.2021.111516 SN - 1556-2921 SN - 0010-2180 VL - 232 ER - TY - CHAP A1 - Liu, W. C. A1 - Dong, J. A1 - Zhang, Ping ED - Agnew, Sean A. T1 - Effect of Shot Peening on High Cycle Fatigue Performance of Mg-10Gd-3Y-0.5Zr Magnesium Alloy T2 - Magnesium Technology 2010, Proceedings of a symposium sponsored by the Magnesium Committee of the Light Metals Division of TMS Y1 - 2009 SN - 978-0-87339-746-9 SP - 255 EP - 260 PB - The Minerals, Metals & Materials Society CY - Pennsylvania ER -