| Metal additive manufacturing in aerospace: A review B Blakey-Milner, P Gradl, G Snedden, M Brooks, J Pitot, E Lopez, M Leary, ... Materials & Design 209, 110008, 2021 | 1744 | 2021 |
| Robust metal additive manufacturing process selection and development for aerospace components P Gradl, DC Tinker, A Park, OR Mireles, M Garcia, R Wilkerson, ... Journal of Materials Engineering and Performance 31 (8), 6013-6044, 2022 | 175 | 2022 |
| GRCop-42 development and hot-fire testing using additive manufacturing powder bed fusion for channel-cooled combustion chambers PR Gradl, CS Protz, K Cooper, D Ellis, LJ Evans, C Garcia AIAA Propulsion and Energy 2019 Forum, 4228, 2019 | 155 | 2019 |
| Additive manufacturing of liquid rocket engine combustion devices: a summary of process developments and hot-fire testing results PR Gradl, SE Greene, C Protz, B Bullard, J Buzzell, C Garcia, J Wood, ... 2018 Joint propulsion conference, 4625, 2018 | 148 | 2018 |
| End to end process evaluation for additively manufactured liquid rocket engine thrust chambers F Kerstens, A Cervone, P Gradl Acta Astronautica 182, 454-465, 2021 | 126 | 2021 |
| Technology advancements for channel wall nozzle manufacturing in liquid rocket engines PR Gradl, CS Protz Acta Astronautica 174, 148-158, 2020 | 113 | 2020 |
| A 3D printable alloy designed for extreme environments TM Smith, CA Kantzos, NA Zarkevich, BJ Harder, M Heczko, PR Gradl, ... Nature 617 (7961), 513-518, 2023 | 112 | 2023 |
| Development and hot-fire testing of additively manufactured copper combustion chambers for liquid rocket engine applications PR Gradl, C Protz, SE Greene, D Ellis, B Lerch, I Locci 53rd AIAA/SAE/ASEE joint propulsion conference, 4670, 2017 | 105 | 2017 |
| Progress in additively manufactured copper-alloy GRCop-84, GRCop-42, and bimetallic combustion chambers for liquid rocket engines PR Gradl, CS Protz, DL Ellis, SE Greene International Astronautical Congress (IAC), 2019 | 80 | 2019 |
| Additive manufacturing and hot-fire testing of liquid rocket channel wall nozzles using blown powder directed energy deposition inconel 625 and JBK-75 Alloys PR Gradl, CS Protz, T Wammen AIAA Propulsion and Energy 2019 Forum, 4362, 2019 | 79 | 2019 |
| Geometric feature reproducibility for laser powder bed fusion (L-PBF) additive manufacturing with Inconel 718 PR Gradl, DC Tinker, J Ivester, SW Skinner, T Teasley, JL Bili Additive Manufacturing 47, 102305, 2021 | 69 | 2021 |
| Microstructure and hardness comparison of as-built inconel 625 alloy following various additive manufacturing processes A Gamon, E Arrieta, PR Gradl, C Katsarelis, LE Murr, RB Wicker, ... Results in Materials 12, 100239, 2021 | 64 | 2021 |
| Size effects on microstructure and mechanical properties of additively manufactured copper–chromium–niobium alloy G Demeneghi, B Barnes, P Gradl, JR Mayeur, K Hazeli Materials Science and Engineering: A 820, 141511, 2021 | 60 | 2021 |
| Characteristics of bi-metallic interfaces formed during direct energy deposition additive manufacturing processing R Anderson, J Terrell, J Schneider, S Thompson, P Gradl Metallurgical and Materials Transactions B 50, 1921-1930, 2019 | 60 | 2019 |
| Superior tensile properties of Hastelloy X enabled by additive manufacturing R Ghiaasiaan, M Muhammad, PR Gradl, S Shao, N Shamsaei Materials Research Letters 9 (7), 308-314, 2021 | 57 | 2021 |
| Rapid fabrication techniques for liquid rocket channel wall nozzles PR Gradl 52nd AIAA/SAE/ASEE Joint Propulsion Conference, 4771, 2016 | 56 | 2016 |
| Current state of NASA continuously rotating detonation cycle engine development TW Teasley, TM Fedotowsky, PR Gradl, BL Austin, SD Heister AIAA SciTech 2023 Forum, 1873, 2023 | 50 | 2023 |
| Additive manufacturing and hot-fire testing of bimetallic GRCop-84 and C-18150 channel-cooled combustion chambers using powder bed fusion and Inconel 625 hybrid directed energy … PR Gradl, CS Protz, K Zagorski, V Doshi, H McCallum AIAA Propulsion and Energy 2019 Forum, 4390, 2019 | 46 | 2019 |
| Process development and hot-fire testing of additively manufactured NASA HR-1 for liquid rocket engine applications PR Gradl, TW Teasley, CS Protz, C Katsarelis, P Chen AIAA Propulsion and Energy 2021 Forum, 3236, 2021 | 45 | 2021 |
| Lightweight thrust chamber assemblies using multi-alloy additive manufacturing and composite overwrap PR Gradl, C Protz, J Fikes, D Ellis, L Evans, A Clark, S Miller, T Hudson AIAA propulsion and energy 2020 forum, 3787, 2020 | 45 | 2020 |
Colton KatsarelisMaterials Engineer, NASA Marshall Space Flight CenterEmail confirmado em nasa.gov
