Jeff Ma, Ph.D., FASME

Associate Professor of Mechanical Engineering

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Courses Taught

Ma teaches core Mechanical Engineering courses including Computer Aided Engineering, Machine Design, Materials Science, Manufacturing Processes, Principles of Mechatronics, Engineering Fracture Mechanics, Theories of Plasticity, Finite Element Analysis of Composite Materials with Abaqus, Advanced Manufacturing Technology, Finite Element Method I and II, Freshmen Engineering I and II. He also teaches Mechanical Engineering Lab and Mechanics of solids lab.

Education

Ph.D. Computational Solid Mechanics, Kansas State University
M.Sc. Mechanical Manufacturing and Automation, Beijing Institute of Technology
B.Sc. in Mechanical Design and Manufacturing, Beijing Institute of Technology

Research Interests

• Computational Solid Mechanics (Meshless method, Finite Element Method, and Peridynamics)
• Multi-scale modeling (Finite Element Method-FEM, Meshless method, Discrete Element Method -DEM, Molecular Dynamics Simulations-MDS)
• Structural Analysis, development of in-house FEM and meshless programs
• Numerical and experimental investigation of machining of difficult-to-machine materials, e.g., titanium alloys, structural ceramics, superalloys, composites, and biomaterials
• Numerical modeling of manufacturing processes and development of novel cutting tools
• Numerical modeling of non-conventional machining (EDM and welding)
• Laser-assisted/laser machining of advanced materials, femtosecond laser-matter interaction
• Numerical and experimental investigation of laser peening processes of advanced materials
• Micro-machining and nano-machining of brittle materials and metallic materials
• Machine Learning/AI, Robotics/Mechatronics, Automation of manufacturing processes using PLC and Industrial robots, using derived sensor models (LiDAR) to generate and validate geo-referenced images and 3D point clouds for feature extraction and target detection
• Modeling and simulation of tire-soil interactions, designing and optimizing of pneumatic and non-pneumatic tires, designing and fabricating of electromechanical systems
• Monitoring and testing of manufacturing processes/failure of mechanical systems, CAD/CAM

Click here for more information on Jeff Ma's research.

Labs and Facilities

Manufacturing System Laboratory
The manufacturing system lab includes MDH Machine Shop and Computer Aided Manufacturing (CAM) machine shop in Oliver Hall. MDH machine shop has five (5) Jet lathes (model GHP 1340), one (1) Enco lathe, and five Jet Vertical Mills (model JM2). CAM machine shop in Oliver Hall has one (1) HAAS CNC machine center (model VF4), one (1) South Bend lathe,and one (1) Bridgeport vertical mill. This manufacturing system lab provides students with hands-on experience with various manufacturing processes for teaching purposes and enables faculty and students to fabricate various components for senior design projects and other student projects. In addition, the lab provides faculty and students the opportunities to conduct experimental investigations of machinability of newly developed materials and performance of innovatively designed cutting tools.

Mechatronics Laboratory
Mechatronics lab is a teaching lab in Department of Aerospace and Mechanical Engineering. Mechatronics refers to the synergistic integration of precision mechanical structure and motion, electronic control, and system concepts in the design of industrial products and processes. We have autonomous mobile robots, Programmable Logic Control (PLC) Systems, and industrial robots. By using these mechatronics systems we give the students the opportunities to get hands-on experience and prepare students to be able to design and fabricate electro-mechanical systems and get industrial positions and/or succeed in future graduate studies.

Laser Peening Laboratory
Laser Peening is an emerging technology to improve the durability of precision metal components ranging from turbine blades and transmission gears to medical implants. The laboratory consists of a 1064 nm infrared pulsed laser, target positioning table, and associated optics. The lab is used to perform experiments involving laser-induced residual stress fields in precision metal components, with the intent to extend the fatigue life cycles. The facility is operated in collaborative research projects with the U.S. Air Force Research Laboratory. A student research group at Parks College has been formed to design and conduct computational and experimental research in laser peening.

 

Publications and Media Placements

Printed Archival Peer-Reviewed Journals 

M. Hassan, J. Ma, M. Jahan. Numerical modeling and simulation of machining of 3D printed CFRP composite. Journal of Manufacturing letters. Volume 33, 2022, pages 415-427. 

I. Mastorakos, J. Ma. Composition influence on edge dislocation mobility in an FCC high entropy alloy. Journal of Materials Research Society (MRS) Advances. https://doi.org/10.1557/s43580-022-00284-5. Shared link: https://rdcu.be/cNrXg. 

I. Ragai, A. Abdallah, H. Abdeltawab, F. Qian, and J. Ma. Toward Smart Industrial Internet of Things (IIoT): Classification of Cutting Parameters and Energy Consumption Patterns in the Turning Process. Journal of Manufacturing Systems. https://doi.org/10.1016/j.jmsy.2022.04.016

M. N. Bisheh, X. Wang, S. Chang, S. Lei and J. Ma. Image based characterization of laser scribing quality using transfer learning. Journal of Intelligent Manufacturing, JIMS-D-21-00514, https://doi.org/10.1007/s10845-022-01926-z. Shared link: https://rdcu.be/cI9GV 

Q. Liu, X. J. Xin, J. Ma. Coupled peridynamics least square minimization with finite element method in 3D and implicit solutions by message passing interface. Journal of Peridynamics and Nonlocal Modeling. JPER-D-21-00008 (2021). https://doi.org/10.1007/s42102-021-00060-3 

M. Gueli, J. Ma, N. M. Cococcetta, D. Pearl, M. P. Jahan. Experimental investigation of tool wear, cutting forces, and resulting surface finish during dry and flood coolant slot milling of Inconel 718. Elsevier Journal of Procedia Manufacturing. Volume 53, 2021, Pages 236-245. https://doi.org/10.1016/j.promfg.2021.06.026

N. M. Cococcetta, M. P. Jahan, J. Schoop, J. Ma, D. Pearl, M. Hassan*. Post-processing of 3D printed thermoplastic CFRP composites using cryogenic machining. Journal of Manufacturing Processes. PII: S1526-6125(21) 00384-4. Volume 68, Part A, August 2021, pp. 332-346. https://doi.org/10.1016/j.jmapro.2021.05.054 

N. M. Cococcetta, D. Pearl, M. P. Jahan, J. Ma. Investigating Surface Finish, Burr Formation, and Tool Wear during Machining of 3D Printed Carbon Fiber Reinforced Polymer Composite. Journal of Manufacturing Processes. Volume 56, Part B, August 2020, pp. 1304-1316. https://doi.org/10.1016/j.jmapro.2020.04.025

N. Duong, J. Ma, M. Jahan, S. Lei, V. K. Core, M. Sundaram. Numerical Investigation of Effect of Operating Parameters on the Phase Transformation during Vibration Assisted Nano Impact Machining of Silicon by Loose Abrasives (VANILA). Transactions of ASME Journal of Micro- and Nano- Manufacturing. JMNM-18-1069. December 2019. https://doi.org/10.1115/1.40457

M. P. Jahan, J. Ma, C. Hanson*, X. Chen, G. K. Arbuckle. Experimental and Numerical Investigation of Cutting Forces in Micro-milling of Polycarbonate Glass. Journal of Machining Science and Technology. December 2019. DOI: 10.1080/10910344.2019.1698608

N. Duong, J. Ma, S. Lei. FEM Assessment of the Effects of Machining Parameters in Vibration Assisted Nano Impact Machining of Silicon by Loose Abrasives. International Journal of Manufacturing Research (2019). DOI: 10.1504/IJMR.2020.10021558

Khatri, M. P. Jahan, J. Ma. Assessment of tool wear and microstructural alteration of the cutting tools in conventional and sustainable slot milling of Ti-6Al-4V alloy. International Journal of Advanced Manufacturing Technology. 2019. https://doi.org/10.1007/s00170-019-04520-5

N. Duong, V. K. Kore, J. Ma, M. Jahan, S. Lei, M. Sundaram. Assessment of the Damage Evolution in Vibration Assisted Nano Impact Machining by Loose Abrasives at Elevated Temperatures: Numerical Study. Journal of Manufacturing Processes. PII: S1526-6125(19)30323-8. November 2019, Volume 47, pp. 357-366. https://doi.org/10.1016/j.jmapro.2019.09.034

M. P. Jahan, J. Ma, Craig Hanson, G. K. Arbuckle. Tool wear and resulting surface finish during micro slot-milling of polycarbonates using uncoated and coated carbide tools. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. https://doi.org/10.1177/0954405419862479

C. Hanson, P. Hiwase, X. Chen, M.P. Jahan, J. Ma, G. Arbuckle. Experimental Investigation and Numerical Simulation of Burr Formation in Micro-Milling of Polycarbonates. Elsevier Journal of Procedia Manufacturing. 2019. Volume 34, pp. 293-304. https://doi.org/10.1016/j.promfg.2019.06.153

C. Liu, N. Duong, M. Jahan, J. Ma and R. Kirwin. Experimental Investigation and Numerical Simulation of Micro-EDM of Bulk Metallic Glass with Focus on Surface Finish. Elsevier Journal of Procedia Manufacturing. 2019. Volume 34, pp. 275-286. https://doi.org/10.1016/j.promfg.2019.06.151

M. Shockly, N. Duong, J. Ma, S. Lei, M. P. Jahan, M. Sundaram. Numerical Investigation of the Effects of Impact Speed and Impact Angle of Abrasive in the Vibration Assisted Nano Impact Machining of Single Crystalline Silicon by Loose Abrasive using Molecular Dynamics Simulation. Journal of Manufacturing Processes. S1526-6125(19)30087-8. July 2019, Volume 43, part B, pp. 12-19. doi:10.1016/j.jmapro.2019.03.044

S. Lei, G. Yang, X. Wang, S. Chen, A. Prieb, J. Ma. High energy femtosecond laser peening of 2024 aluminum alloy. Elsevier Journal of Procedia CIRP. 2018, Volume 4, pp 357-361, https://doi.org/10.1016/j.procir.2018.08.141

H. Wu, J. Ma, Q. Meng, M. Jahan and F. Alavi. Numerical modeling of electrical discharge machining of Ti-6Al-4V. Elsevier Journal of Procedia Manufacturing. 2018, Volume 26, pp 359-371. PII S2351-9789(18)30714-5, DOI: 10.1016/j.promfg.2018.07.044

H. Wu, J. Ma, S. Lei. FEM prediction of dislocation density and grain size evolution in high speed machining of Al6061-T6 Alloy using microgrooved cutting tools. International Journal of Advanced Manufacturing Technology. April, 2018, Volume 95, pp 4211-4227. DOI:10.1007/s00170-017-1476-6 (IF: 2.209)

S. Lei, D. Grojo, J. Ma, X. Yu and H. Wu. Femtosecond laser backside ablation of gold film on silicon substrate. Elsevier Journal of Procedia Manufacturing. 2016. PII: S2351-9789(16)30054-3. DOI: 10.1016/j.promfg.2016.08.049.

J. Ma, X. Ge, C. Qiu, and S. Lei. FEM Assessment of Performance of Microhole Textured Cutting Tool in Machining of Ti-6Al-4V, International Journal of Advanced Manufacturing Technology, June 2016, Vol. 84, Issue 9, pp. 2609-2621. DOI: 10.1007/s00170-015-7918-0

J. Ma, N. Duong, S. I. Chang, Y. Lian, J. Deng, and S. Lei. Assessment of Microgrooved Cutting Tool in Dry Machining of AISI 1045 Steel. Transactions of ASME Journal of Manufacturing Science and Engineering. 137(3), 031001 (June 01, 2015) (9 pages) doi:10.1115/1.4029565

X. Yu, J. Ma,and S. Lei. Femtosecond Laser Scribing of Mo Thin Film on Flexible Substrate Using Axicon Focused Beam. Journal of Manufacturing Processes. doi:10.1016/j.jmapro.2015.05.004

J. Ma, N. Duong, and S. Lei. FEM investigation of friction and wear of microgrooved cutting tool in dry machining of AISI 1045 steel. Journal of Engineering Tribology. April 2015 vol. 229 no. 4 pp. 449-464. DOI: 10.1177/1350650114556395

J. Ma, X. Ge, N. Pelate, and S. Lei. Numerical Investigation of Two-dimensional Thermally Assisted Ductile Regime Milling of nanocrystalline hydroxyapatite. Ceramics International 41 (2015) pp. 3409-3419. doi: 10.1016/j.ceramint.2014.10.131

J. Ma, P. Andrus, S. Condoor,and S. Lei. Numerical Investigation of Effects of Cutting Conditions and Cooling Schemes on Tool Performance in Up Milling of Ti-6AL-4V Alloy, International Journal of Advanced Manufacturing Technology, April 2015, Volume 78, Issue 1-4, pp. 361-383. doi: 10.1007/s00170-014-6637-2

J. Ma, N. Duong, and S. Lei. 3D Numerical Investigation of the Performance of Microgroove Textured Cutting Tool In Dry Machining of Ti-6Al-4V, International Journal of Advanced Manufacturing Technology, Vol. 79, Issue 5-8, pp. 1313-1323. July 2015. DOI: 10.1007/s00170-015-6937-1

J. Ma, X. Ge, N. H. Duong, and S. Lei. Numerical Investigation of Restricted Contact Cutting Tool in Dry Machining of AISI 1045 Steel. International Journal of Manufacturing Research (2015) Vol. 10, No. 2, pp.147–161. DOI:10.1504/IJMR.2015.069714

J. Ma, N. Duong, S. Lei. Numerical Investigation of the Performance of Microbump Textured Cutting Tool in Dry Machining of AISI 1045 Steel. Journal of Manufacturing Processes. Journal of Manufacturing Processes, Vol. 19, pp. 194-204. August 2015. doi: 10.1016/j.jmapro.2014.10.001

J. Ma, X. Ge, S.I. Changand S. Lei. Assessment of cutting energy consumption and energy efficiency in machining of 4140 steel. International Journal of Advanced Manufacturing Technology. October 2014, Volume 74, Issue 9-12, pp. 1701-1708. doi:10.1007/s00170-014-6101-3.

J. Ma, X. Ge, S. Lei. Energy Efficiency in Thermally Assisted Machining of Titanium Alloy: a Numerical Study. Transactions of ASME Journal of Manufacturing Science and Engineering. 135, 061001 (2013); doi: 10.1115/1.4025610 (Featured in Cover Page)

J. Ma, N.Pelate, S. Lei. Numerical investigation of Thermally Assisted High Efficiency Ductile Machining of Brittle Materials. Ceramics International. Volume 39, Issue 8, December 2013, Pages 9377–9384.doi: 10.1016/j.ceramint.2013.05.054

J. Ma, N. Pelate, S. Lei. 3D numerical investigation of thermally assisted high efficiency ductile machining of nanocrystalline hydroxyapatite. Journal of Manufacturing Processes. Volume 15, Issue 4, October 2013, Pages 586–592. doi: 10.1016/j.jmapro.2013.06.007 

J. Ma, J. Summers (2009), “Tire-Sand Interaction Research for Lunar Applications”, Tyre Technology International Review, 2009, pp. 70-75. 

J. Ma, X. Xin. Elastoplastic Large deformation Using Meshless Integral Method. World Journal of Mechanics. Vol. 2, No. 6, pp. 336-360, 2012. DOI: 10.4236/wjm.2012.26040 J. Ma, J. Summers (2009), “Tire-Sand Interaction Research for Lunar Applications”, Tyre Technology International Review, 2009, pp. 70-75.

J. Ma, X. Xin, and P. Krishnaswami. Elastoplastic Meshless Integral Method. Computer Methods in Applied Mechanics and Engineering, October 2008, 197(51-52): pp. 4774-4788. DOI: 10.1016/j.cma.2008.06.019

J. Ma, P. Krishnaswami, and X. Xin. A Truly Meshless Pre- and Post-Processor for Meshless Analysis Methods. Advances in Engineering Software. 2008 (38), 9-30. DOI: 10.1016/j.advengsoft.2006.07.001

A. Bodin, J. Ma, X. Xin, and P. Krishnaswami. A Meshless Integral Method Based on Regularized Boundary Integral Equation. Computer Methods in Applied Mechanics and Engineering, v195, n44-47, September 15 2006, p6258-6286. DOI: 10.1016/j.cma.2005.12.005

Peer-Reviewed Conference Papers

J. Ma, M. Karim, M. Jahan, S. Shim, S. Lei. Nanosecond laser modification of nickel-titanium based shape memory alloys. ASME 2021 International Mechanical Engineering Congress & Exposition. IMECE2022-95292. October 30th -November 3rd, 2022. (accepted)

M. Hassan, J. Ma, M. Jahan. Numerical modeling and simulation of machining of 3D printed CFRP composite. NAMRC 50-112. June 27-July 1, 2022, Purdue University in West Lafayette, IN, USA.  

I. Ragai, A. Abdallah, H. Abdeltawab, F. Qian, and J. Ma. Toward Smart Industrial Internet of Things (IIoT): Classification of Cutting Parameters and Energy Consumption Patterns in the Turning Process. NAMRC 50-75. June 27-July 1, 2022, Purdue University in West Lafayette, IN, USA. 

M. Hassan, J. Ma, M. Jahan. Numerical Investigation into the Cutting Forces, Chip Formation Mechanism, and Burr Formation During Slot Milling of Laminated CFRP Composites. ASME 2021 International Mechanical Engineering Congress & Exposition. IMECE2021-73310. November 1^st-5^th, 2021. Virtual. V02AT02A072; 13 pages. https://doi.org/10.1115/IMECE2021-73310

O. Pachon, J. Ma, N. Schaper, M. P. Jahan, S. Lei, I. Kuljanishvili. Experimental investigation of nanosecond laser ablation of carbon nanotubes. ASME 2021 International Mechanical Engineering Congress & Exposition. IMECE2021-73390. November 1^st-5^th, 2021. Virtual. V02BT02A033; 8 pages. (rated as journal quality) https://doi.org/10.1115/IMECE2021-73390

C. Okwuashi, J. Ma, M. P. Jahan. A Study on the Tip-Based Nanomachining of Silicon Wafer Using Atomic Force Microscopy (AFM). ASME 2020 International Mechanical Engineering Congress & Exposition, IMECE 2020-24258. November 15-19, Portland, Oregon, USA. V02AT02A032; 5 pages. https://doi.org/10.1115/IMECE2020-24258

A. Rashid, M. P. Jahan, A. Perveen, J. Ma. Machining of Through Holes in Non-Conductive Aluminum Nitride Ceramic Using Electrical Discharge Machining Process. ASME 2020 International Manufacturing Science and Engineering Conference, MSEC2020-8359. June 22-26, 2020, University of Cincinnati, Cincinnati, OH, USA. V002T06A022; 8 pages. https://doi.org/10.1115/MSEC2020-8359

G. Pasken, J. Ma, M. Jahan, S. Lei. Numerical Simulation and Experimental Validation of Pure Water Jet Machining of Ti-6AL-4V. ASME 2020 International Manufacturing Science and Engineering Conference, MSEC2020-8356. June 22-26, 2020, University of Cincinnati, Cincinnati, OH, USA.V002T06A019; 11 pages. https://doi.org/10.1115/MSEC2020-8356

G. Pasken, J. Ma, M. Jahan, S. Lei. Numerical Simulation of Pulsed Water Jet Machining of Al 6061-T6 and Ti-6AL-4V. ASME 2020 International Manufacturing Science and Engineering Conference, MSEC2020-8358. June 22-26, 2020, University of Cincinnati, Cincinnati, OH, USA. V002T06A021; 12 pages. https://doi.org/10.1115/MSEC2020-8358

N. M. Cococcetta, D. Pearl, M. P. Jahan, J. Ma. Investigating Surface Finish, Burr Formation, and Tool Wear during Machining of 3D Printed Carbon Fiber Reinforced Polymer Composite. NAMRC 48-82. June 22-26, 2020, University of Cincinnati, Cincinnati, OH, USA. (accepted)

A. Rashid, M. Jahan, A. Perveen, J. Ma. Development of Trends and Methodologies for Shaping Ceramics by Electrical Discharge Machining: A Review. ASME 2019 International Mechanical Engineering Congress & Exposition, IMECE 2019-10946. November 11-14, Salt Lake City, UT, USA.

C. Liu, A. Rashid, M. Jahan, J. Ma. Machining of High Aspect Ratio Micro-Holes on Titanium Alloy Using Silver Nano Powder Mixed Micro EDM Drilling. ASME 2019 International Mechanical Engineering Congress & Exposition, IMECE 2019-10944. November 11-14, Salt Lake City, UT, USA. 

C. Liu, A. Rashid, M. Jahan, J. Ma. Investigating the Micro-EDM Machinability of Bulk Metallic Glass in Micro-EDM Drilling. ASME 2019 International Mechanical Engineering Congress & Exposition, IMECE 2019-10940. November 11-14, Salt Lake City, UT, USA. 

A. Khatra, X. Chen, M. Jahan, J. Ma. Investigating Microstructural Changes and Phase Transformation During Slot Milling of Ti-6Al-4V in Dry, Flood Coolant and MQL Conditions. ASME 2019 International Manufacturing Science and Engineering Conference, MSEC2019-3012. June 10-14, 2019, Penn State Behrend’s School of Engineering, Erie, PA, USA. 

N. Duong, J. Ma, S. Lei, M. Sundaram, M. Jahan, Assessment of Effect of Temperature in Damage Evolution in Nanomachining of Single Crystalline Silicon Using Vibration Assisted Nano Impact Machining by Loose Abrasives (VANILA). ASME 2019 International Manufacturing Science and Engineering Conference, MSEC2019-2707. June 10-14, 2019, Penn State Behrend’s School of Engineering, Erie, PA, USA. 

G. Pasken, J. Ma, S. Lei, and M. Jahan. Numerical Simulation of Pure Water Jet Machining of Al 6061-T6 with Experimental Validation. ASME 2019 International Manufacturing Science and Engineering Conference, MSEC2019-2712. June 10-14, 2019, Penn State Behrend’s School of Engineering, Erie, PA, USA.

C. Hanson, P. Hiwase, X. Chen, M.P. Jahan, J. Ma, G. Arbuckle. Numerical and Experimental Investigation of Burr Formation in Slot Milling of Polycarbonate Glass. NAMRC47-45. June 10-14, 2019, Penn State Behrend’s School of Engineering, Erie, PA, USA. 

C. Liu, N. Duong, M. Jahan, J. Ma and R. Kirwin. Experimental Investigation and Numerical Simulation of Micro-EDM of Bulk Metallic Glass with Focus on Surface Finish. NAMRC 47-32. June 10-14, 2019, Penn State Behrend’s School of Engineering, Erie, PA, USA.

M. Shockly, N. Duong, J. Ma, S. Lei, M. P. Jahan, M. Sundaram. Numerical Investigation of the Effects of Impact Speed and Impact Angle of Abrasive in the Vibration Assisted Nano Impact Machining of Single Crystalline Silicon by Loose Abrasive using Molecular Dynamics Simulation. NAMRC 47-26. June 10-14, 2019, Penn State Behrend’s School of Engineering, Erie, PA, USA. 

G. Pasken, J. Ma, M. McQuilling, M. Jahan. Numerical Modeling of Pure Water Jet Machining of Ti-6Al-4V and Al 6061-T6 using ABAQUS and Smoothed Particle Hydrodynamics. ASME 2018 International Mechanical Engineering Congress & Exposition, IMECE 2018-87271. Nov. 9-15, 2018, David L. Lawrence Convention Center, Pittsburgh, Pennsylvania, USA. doi:10.1115/IMECE2018-87271

N. Duong, J. Ma, M. Jahan, S. Lei, M. Sundaram. FEM Investigation of Phase Transformation in Vibration Assisted Nano Impact Machining by Loose Abrasives (VANILA). ASME 2018 International Mechanical Engineering Congress & Exposition, IMECE 2018-87274. Nov. 9-15, 2018, David L. Lawrence Convention Center, Pittsburgh, Pennsylvania, USA. doi:10.1115/IMECE2018-87274

C. Hanson, X. Chen*, M. Jahan, J. Ma. Investigating the Effect of Tool Coating on Cutting Forces and Tool Wear During Micro-Milling of Polycarbonate Glass. ASME 2018 International Mechanical Engineering Congress & Exposition, IMECE 2018-87441. Nov. 9-15, 2018, David L. Lawrence Convention Center, Pittsburgh, Pennsylvania, USA. doi:10.1115/IMECE2018-87441

H. Wu, J. Ma, Q. Meng, M. Jahan and F. Alavi. Numerical modeling of electrical discharge machining of Ti-6Al-4V. NAMRC 46-83. June 18-22, 2018, Texas A&M University, College Station, TX, USA.

X. Chen, A. Khatri, J. Ma, M. Jahan. Numerical Investigation of the slot up milling of Ti-6Al-4V. ASME 2018 International Manufacturing Science and Engineering Conference, MSEC2018-6498. June 18-22, 2018, Texas A&M University, College Station, TX, USA. doi:10.1115/MSEC2018-6498

N. Duong, J. Ma, S. Lei. Numerical Investigation of the Damage Evolution in Vibration Assisted Nano Impact Machining by Loose Abrasives with Different Operating Parameters. ASME 2018 International Manufacturing Science and Engineering Conference, MSEC2018-6474. June 18-22, 2018, Texas A&M University, College Station, TX, USA. doi:10.1115/MSEC2018-6474

H. Wu, J. Ma, S. Lei. Numerical investigation of dislocation density and grain size evolution in orthogonal cutting of pure titanium using microgrooved cutting tools. ASME 2018 International Manufacturing Science and Engineering Conference, MSEC2018-6473. June 18-22, 2018, Texas A&M University, College Station, TX, USA. doi:10.1115/MSEC2018-6473

X. Chen, N. Duong, J. Ma, S. Lei. Investigation of the Effects of Microgrooved Cutting Tool in High Speed Machining of AISI 1045 steel. ASME 2017 International Manufacturing Science and Engineering Conference, MSEC2017-2798. June 4-8, 2017, Los Angeles, CA, USA. pp. V001T02A029; 9 pages. doi:10.1115/MSEC2017-2798

H. Wu, N. Duong, J. Ma, S. Lei. CEL FEM Investigation of Effects of Microgrooved Cuttig Tools in High Speed Machining of AISI 1045 Steel. ASME 2017 International Manufacturing Science and Engineering Conference, MSEC2017-2932. June 4-8, 2017, Los Angeles, CA, USA. pp. V001T02A034; 12 pages. doi:10.1115/MSEC2017-2932

N. Duong, J. Ma, S. Lei. FEM Investigation of the Effects of Impact Speed and Angle of Impacts of Abrasive in the Vibration Assisted Nano Impact Machining by Loose Abrasive. ASME 2017 International Manufacturing Science and Engineering Conference, MSEC2017-3043. June 4-8, 2017, Los Angeles, CA, USA. pp. V001T02A039; 6 pages. doi:10.1115/MSEC2017-3043

Q. Chang, J. Ma, H. McCormick. Experimental Investigation of surface film finish time and curing finish time of replicating materials Microset 101 RT. 72nd Annual Meeting & Exhibition of the Society of Tribologists and Lubrication Engineers. May 21-25, 2017, Atlanta, Georgia 30303, USA. 

A. MacKrell, F. Souza, H. Wu, and J. Ma. Multiscale Analysis of a chopped fiber injection molded part using Abaqus and MultiMech. 16th SPE Automotive Composites Conference & Exhibition (ACCE). September 7-9, 2016, Novi, MI 48374.

S. Lei, D. Grojo, J. Ma, X. Yu and H. Wu*. Femtosecond laser backside ablation of gold film on silicon substrate. ASME 2016 International Manufacturing Science and Engineering Conference, MSEC2016/NAMRC 44-89, June 27-July 1, 2016, Blacksburg, VA, USA.

C. Qiu, J. Ma, and S. Lei. Assessment of the Effects of Microgrooved Cutting Tool on the Machining Induced Residual Stress in Machining of Ti-6Al-4V. ASME 2016 International Manufacturing Science and Engineering Conference, MSEC2016-8656, June 27-July 1, 2016, Blacksburg, VA, USA.

D. Mikesell, A. Ali, T. Chen, J. Ma. Improving Entrepreneurial Skills through Problem-Based Learning on Sustainability. June 2015 ASEE Annual Conference and Exposition, Seattle, Washington. DOI: 10.18260/p.24254

X. Yu, J. Ma,and S. Lei. Femtosecond Laser Scribing of Mo Thin Film on Flexible Substrate Using Axicon Focused Beam. ASME 2015 International Manufacturing Science and Engineering Conference, MSEC2015/NAMRC 43-56, June 8-12, 2015, Charlotte, North Carolina, USA. (Accepted and fast-tracked for journal publication in SME Journal of Manufacturing Processes and nominated the Outstanding Paper Award on January 15, 2015)

J. Ma, C. Qiu, and S. Lei. Comparison of the effects of down milling and up milling on the tool temperature in machining of Ti-6Al-4V. ASME 2015 International Manufacturing Science and Engineering Conference, MSEC2015/NAMRC 42-9450, June 8-12, 2015, Charlotte, North Carolina, USA.

J. Ma, N. Duong, S. Lei. ASME IMECE 2014-36773. ASME 2014 International Mechanical Engineering Congress & Exposition. November 14-20, 2014, Montreal, Canada.

J. Ma, X. Ge, N. Duong, S. Lei. ASME IMECE 2014-36804. Assessment of Restricted Contact Cutting Tool in Dry Machining of AISI 1045 Steel. ASME 2014 International Mechanical Engineering Congress & Exposition. November 14-20, 2014, Montreal, Canada.

J. Ma, P. Andrus, N. Duong, S. Condoor, S. Lei, M. Fischer. ASME IMECE 2014-38647. Numerical Analysis of Tool Performance in Up Milling of Ti-6AL-4V Alloy. ASME 2014 International Mechanical Engineering Congress & Exposition. November 14-20, 2014, Montreal, Canada.

J. Ma, P. Andrus, S. Condoor, S. Lei. Numerical Investigation of Tool Performance in Milling of Ti-6Al-4V alloy. ASME 2014 International Manufacturing Science and Engineering Conference, MSEC2014/NAMRC 41-4512, June 9-13, 2014, Detroit, Michigan, USA.

J. Ma, X. Ge, S. Lei. Numerical Investigation of Two-dimensional Thermally Assisted Ductile Regime Milling of Brittle Materials. ASME 2014 International Manufacturing Science and Engineering Conference, MSEC2014-4191, June 9-13, 2014, Detroit, Michigan, USA.

G. Pasken, J. Ma, R. Pasken. Designing Automated Dropsonde Launching System for Saint Louis University Parks Airborned Science System. 2014 AVAPS Users Group Meeting. April 22-23, 2014. Boulder, Colorado.

J. Ma, N. Pelate, S. Lei. Numerical Investigation of Thermally Assisted High Efficiency Ductile Machining of Brittle Materials. ASME IMECE 2013-63827. ASME 2013 International Mechanical Engineering Congress & Exposition. November 13-21, 2013, San Diego, CA, USA.

J. Ma, N. Duong, Y. Lian, S.lei. Assessment of Microgrooved Cutting Tool in Dry Machining of AISI 1045 Steel: A Numerical Study. ASME IMECE 2013-63842. ASME 2013 International Mechanical Engineering Congress & Exposition. November 13-21, 2013, San Diego, CA, USA.

J. Ma, N. Pelate, S. Lei. Thermally Assisted High Efficiency Ductile machining of Brittle Materials: a Numerical Study. ASME 2013 International Manufacturing Science and Engineering Conference, MSEC2013/NAMRC 41-1596, June 10-14, 2013, Madison, Wisconsin, USA.

J. Ma, X. Ge, S. Lei. Energy Efficiency in Thermally Assisted Machining of Titanium Alloy: a Numerical Study. ASME 2013 International Manufacturing Science and Engineering Conference, MSEC2013-1207, June 10-14, 2013, Madison, Wisconsin, USA.

J. Ma. Numerical Investigation of Dynamic Impact between Cellular Shear Band Based Non-pneumatic Tire and Sand with Obstacle. SAE 2013 World Congress & Exhibition. Paper number: 2013-01-0631. April 16-18, 2013. Cobo Center, Detroit, Michigan, USA. doi: 10.4271/2013-01-0631

J. Ma, Y. Yong, S. Lei. 3D FEM Investigation of the Effects of Nose Radius and Edge Radius on Turning of AISI 4140. ASME IMECE 2012-88333. ASME 2012 International Mechanical Engineering Congress & Exposition. November 9-15, 2012, Houston, Texas, USA.

J. Ma, S. Lei, H. Lu. 3D Numerical Investigation of Effects of Milling Process Parameters on High Speed Milling of TiAl6V4. ASME IMECE 2012-88235. ASME 2012 International Mechanical Engineering Congress & Exposition. November 9-15, 2012, Houston, Texas, USA.

J. Ma, FEM Modeling of effect of Cutting Speeds and Tool-Chip Frictional Coefficients in Orthogonal Machining of Titanium Alloy (Ti-6Al-4V). ASME ISFA 2012-7239. International Symposium on Flexible Automation. June 18-20, 2012, St. Louis, MO.

J. Ma, J. Summers, and P. Joseph. FE-Simulation of Tread Profile Effects on the Performance of the Cellular shear band based non-pneumatic tire. SAE 2012 World Congress & Exhibition. Paper number: 2012-01-0768. April 23-26, 2012. Cobo Center, Detroit, Michigan, USA. doi: 10.4271/2012-01-0768

J. Ma, J. Summers, P. Joseph. Application of Meshless Integral Method in Soil Mechanics. Proceeding of ASME IDETC/CIE 2011-47046. 31th Computers and Information in Engineering Conference (CIE) (part A and B), pp. 3-13.Washington, D.C., August 2011. doi: 10.1115/DETC2011-47046

J. Ma, J. Summers, P. Joseph. Numerical Investigation of Effect of Membrane Thickness on the performance of Cellular Shear band based Non-pneumatic Tire. ASME IDETC/CIE 2011-47045. 31th Computers and Information in Engineering Conference (CIE). Washington, D.C., August 2011. Proceedings of the ASME Design Engineering Technical Conference 8, pp. 781-791. doi: 10.1115/DETC2011-47045

J. Ma, J. Summers, P. Joseph. Numerical Simulation of Tread Effects on the Interaction between Cellular Shear Band Based Non-pneumatic Tire and Sand. ASME IDETC/CIE 2011-47044. 31th Computers and Information in Engineering Conference (CIE). Washington, D.C., August 2011. Proceedings of the ASME Design Engineering Technical Conference 8, pp. 769-779. doi: 10.1115/DETC2011-47044

J. Ma, J. Summers, and P. Joseph. Dynamic Impact Simulation of Interaction between Non-Pneumatic Tire and Sand with Obstacle. SAE 2011 World Congress & Exhibition. Paper number: 2011-01-0184. April 12-14, 2011. Cobo Center, Detroit, Michigan, USA. DOI: 10.4271/2011-01-0184

J. Ma, J. Summers, P. Joseph. Meshless Integral Method for Analysis of Elastoplastic Geotechnical Materials. ASME IDETC/CIE 2010-29069. 30th Computers and Information in Engineering Conference (CIE). Montreal, Quebec, Canada. August 2010. Proceedings of the ASME Design Engineering Technical Conference 3 (Parts A and B), pp. 153-163. DOI: 10.1115/DETC2010-29069

J. Ma, J. Summers, P. Joseph. Application of Meshless Integral Method to Metal Forming. ASME IDETC/CIE 2010-29066. 30th Computers and Information in Engineering Conference (CIE). Montreal, Quebec, Canada. August 2010. Proceedings of the ASME Design Engineering Technical Conference 3 (Parts A and B), pp. 141-151. DOI: 10.1115/DETC2010-29066

J. Ma, J. Summers, P. Joseph. Simulation Studies of the influence of the obstacles on Rolling Lunar Wheels. ASME IDETC/CIE 2010-29160. 30th Computers and Information in Engineering Conference (CIE). Montreal, Quebec, Canada. August 2010. Proceedings of the ASME Design Engineering Technical Conference 4 (Parts A and B), pp. 89-100. DOI: 10.1115/DETC2010-29160

A. Kolla, J. Ma, J. Summers, and P. Joseph. Development and qualitative testing of traction concepts as an undergraduate experience. SAE 2010 World Congress & Exhibition. Paper number: 2010-01-0312. April 13-15, 2010. Cobo Center, Detroit, Michigan, USA.

T. Reeves, J. Ma, J. Summers, and P. Joseph. Exploration of Discrete Element Method to Model Dynamic Sand-Tire Interaction. SAE 2010 World Congress & Exhibition. Paper number: 2010-01-0375. April 13-15, 2010. Cobo Center, Detroit, Michigan, USA.

J. Ma, J. Summers, and P. Joseph. Dynamic Simulation of Interaction between non-Pneumatic Tire and Sand. SAE 2010 World Congress & Exhibition. Paper number: 2010-01-0377. April 13-15, 2010. Cobo Center, Detroit, Michigan, USA. DOI: 10.4271/2010-01-0377

J. Ma, J. Ju, J. Summers, and P. Joseph. Effects of Cellular Shear Bands on Interaction between a Non-pneumatic Tire and Sand. SAE 2010 World Congress & Exhibition. Paper number: 2010-01-0376. April 13-15, 2010. Cobo Center, Detroit, Michigan, USA. DOI: 10.4271/2010-01-0376

T. Reeves, J. Ma, J. Summers, P. Joseph. Exploration of Computational Techniques to Model Dynamic Sand-Tire Interaction: Discrete Element Method, Finite Element Method, and Meshless Method. 15th Annual Automotive Research Center Conference. Ann Arbor, Michigan, May 11-May 13, 2010.

J. Ma, X. Xin, and P. Krishnaswami. 10th US National Congress on Computational Mechanics. Regularized Meshless Integral Method for Elastoplasticity with Small Deformation, Columbus, Ohio. July 16-19, 2009.

J. Ma, J. Summers, and P. Joseph. Modeling and Analysis Support for Complex Deformable Systems Interfacing with Crack-Prone Systems. ASME IDETC/CIE 2009-87725. 29th Computers and Information in Engineering Conference (CIE). San Diego, CA, USA. September 2009. Proceeding of DETC 2009 2 (Part A), pp. 159-168. DOI: 10.1115/DETC2009-87725

J. Ma, J. Summers, and P. Joseph. Modeling and simulation of Tweel-sand interaction using FEM. ASME IDETC/CIE 2009-87263. 29th Computers and Information in Engineering Conference (CIE). San Diego, CA, USA. September 2009. Proceeding of DETC 2009 2 (Part A), pp. 123-130. DOI: 10.1115/DETC2009-87263

J. Ma, X. Xin, A. Bodin, and P. Krishnaswami. The Meshless Integral Method: The Effects of Support Domain, Sub-domain, Nodal Density and Monomial Basis. 7th US National Congress on Computational Mechanics. Albuquerque, New Mexico, July 27-31, 2003.

J. Ma, X. Xin, and Prakash Krishnaswami. A Meshless Integral Method and Its Application to Elastoplastic Problems. 7th World Congress on Computational Mechanics. Los Angeles, California. July 16-22, 2006.

J. Ma, P. Krishnaswami, and X. Xin. A New and Efficient Pixel-Based Post-Processor for Meshless Method. 8th US National Congress on Computational Mechanics. Austin, Texas. July 25-27, 2005.

J. Ma, X. Xin, A. Bodin, and P. Krishnaswami. Nodal Density Refinement and Adaptivity for the Meshless Integral Method. 27th World Conference on Boundary Elements and other Meshless Reduction Methods. Orlando, Florida. March 15-17, 2005.

Honors and Awards

• 2022 North American Manufacturing Research Conference (NAMRC) Outstanding Paper
• National Science Foundation (NSF) Award. IUCRC Proposal Planning Grant, Saint Louis University: Center for Accurate Georeferencing of the Environment (CAGE). 2021
• 2019 ASME Reviewers of the Year Award for ASME Journal of Manufacturing Science and Engineering.
• National Science Foundation (NSF) CMMI Award, 2016
• Paper (NAMRC 43-56) was nominated for the Outstanding Paper Award at ASME 2015 International Manufacturing Science and Engineering Conference, MSEC2015/NAMRC 43-56, June 8-12, 2015, Charlotte, North Carolina, USA.
• Nominated for Saint Louis University Parks College Outstanding Graduate Faculty Award (May 2015)
• Saint Louis University Parks College Outstanding Graduate Faculty Award (2014)
• KEEN Topical Grant Award (Sustainability Module Development) (2013)
• President's Research Fund Award, Saint Louis University (2012)
• K-State MNE Outstanding Graduate Researcher Award (2007)

 

 

Professional Organizations and Associations

• ASME (American Society of Mechanical Engineers)
• SME (Society of Manufacturing Engineers)
• SAE (Society of Automotive Engineering)

Community Work and Service

Dr. Ma serves Saint Louis University and Parks College as proposal reviewer for President’s Research fund (PRF) and Beaumont Faculty Development Fund (BFDF), Presidential Scholarship interviewer, Martin Luther King, Jr. Scholarship interviewer, member of the SLU Geospatial Institute Faculty Advisory Board for the term of May 2020 to May 2023, chair/member of Parks College Graduate Research Affairs Committee (GRAC), member of Oliver L. Parks Award Committee member, American Society of Mechanical Engineering (ASME) SLU Student Chapter Faculty Advisor, and SLU Faculty Senator. He also has attended Cohort Meetings of Mentoring for Mission in Teaching from August 2018 to May 2019, which is treated as significant service.

Dr. Ma serves the professional community as research proposal reviewer/panelist for NSF, NASA, and Nebraska Transportation Center, manuscript reviewer for top-notch journals, e.g. Journal of Materials and Engineering Performance, Engineering Fracture Mechanics, Journal of Machining Science and Technology, ASME Journal of Manufacturing Science and Engineering, ASME Journal of Micro- and Nano-Manufacturing, Journal of Materials Processing Technology, SME Journal of Manufacturing Systems, SME Journal of Manufacturing Processes, and numerous other journals. Dr. Ma also serves as the paper reviewer/topic organizer/session chair for ASME IDETC, ASME MSEC, ASME IMECE, NAMRC, and SAE World Congress and Exhibition, book proposal reviewer for CRC Press – A Taylor and Francis Company, several SME scholarship programs, external reviewer for Tenure and Promotion committees for other universities. In addition, Dr. Ma serves as Co-chair/chair of Track 3 “Material Removal” within NAMRI/SME Scientific Committee for term of 2018-2022 and he also serves as an associate editor for SME Journal of Manufacturing Processes (JMP).