@misc{jiang_kim_zhang_johnson_salazar_2014, title={High-Temperature Piezoelectric Sensing}, volume={14}, ISSN={["1424-8220"]}, DOI={10.3390/s140100144}, abstractNote={Piezoelectric sensing is of increasing interest for high-temperature applications in aerospace, automotive, power plants and material processing due to its low cost, compact sensor size and simple signal conditioning, in comparison with other high-temperature sensing techniques. This paper presented an overview of high-temperature piezoelectric sensing techniques. Firstly, different types of high-temperature piezoelectric single crystals, electrode materials, and their pros and cons are discussed. Secondly, recent work on high-temperature piezoelectric sensors including accelerometer, surface acoustic wave sensor, ultrasound transducer, acoustic emission sensor, gas sensor, and pressure sensor for temperatures up to 1,250 °C were reviewed. Finally, discussions of existing challenges and future work for high-temperature piezoelectric sensing are presented.}, number={1}, journal={SENSORS}, author={Jiang, Xiaoning and Kim, Kyungrim and Zhang, Shujun and Johnson, Joseph and Salazar, Giovanni}, year={2014}, month={Jan}, pages={144–169} }
 @article{salazar_edwards_2014, title={Mach 6 Wake Flow Simulations Using a Large-Eddy Simulation/Reynolds-Averaged Navier Stokes Model}, volume={51}, ISSN={["1533-6794"]}, DOI={10.2514/1.a32729}, abstractNote={A hybrid large-eddy simulation/Reynolds-averaged Navier–Stokes turbulence model is used to simulate the Mach 6 flow around a scaled model similar to NASA’s Orion multipurpose crew vehicle. The results for surface pressure and heat transfer are compared with experimental data from previous base flow experiments conducted at the Calspan—University at Buffalo Research Center. Using the highest Reynolds number test case (11×106 based on capsule diameter), different numerical aspects of the hybrid approach are addressed, such as use of a low-dissipation scheme, a modification to the eddy-viscosity blending function, time-averaging results, filtering computational results, and sensitivity to grid resolution. In addition, results are compared with Reynolds-Averaged Navier–Stokes using Menter’s two-equation baseline model and to detached-eddy simulation predictions. By introducing a new modification to the blending from Reynolds-averaged Navier–Stokes to large-eddy simulation within boundary layers, very good agr...}, number={4}, journal={JOURNAL OF SPACECRAFT AND ROCKETS}, author={Salazar, Giovanni and Edwards, Jack R.}, year={2014}, pages={1329–1348} }
 @article{kim_zhang_salazar_jiang_2012, title={Design, fabrication and characterization of high temperature piezoelectric vibration sensor using YCOB crystals}, volume={178}, ISSN={["0924-4247"]}, DOI={10.1016/j.sna.2012.02.003}, abstractNote={A shear-mode piezoelectric accelerometer using YCa4O(BO3)3 single crystals (YCOB) was designed, fabricated and successfully tested for high temperature vibration sensing applications. Dynamic modeling of the accelerometer was presented first, followed by YCOB single crystal sample preparation, sensor assembly and experimental setup establishment. The prototyped accelerometer was tested at temperatures ranging from room temperature to 1000 °C and at frequencies ranging from 50 Hz to 350 Hz. The sensitivity of the prototype was found to be 5.9 ± 0.06 pC/g throughout the tested frequency, temperature and acceleration ranges. In addition, YCOB piezoelectric accelerometers retained the same sensitivity at 1000 °C for a dwell time of 9 h, exhibiting a high stability and reliability.}, journal={SENSORS AND ACTUATORS A-PHYSICAL}, author={Kim, Kyungrim and Zhang, Shujun and Salazar, Giovanni and Jiang, Xiaoning}, year={2012}, month={May}, pages={40–48} }