Gracious Ngaile

Professor

  • 919-515-5222
  • Engineering Building III (EB3) 3160
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Dr. Ngaile’s long-term goal is to contribute to the dramatic reduction of the use of toxins in metal forming lubricants.

At the undergraduate level, Dr. Ngaile teaches Modern Manufacturing Processes (MAE 495M) and Mechanical Engineering Design (MAE 416). In his manufacturing course, the students receive a hands-on introduction to modern manufacturing processes. Dr. Ngaile conveys his own experiences in manufacturing and takes the students on a tour of a manufacturing plant. In his design course, Dr. Ngaile places an emphasis on the general features of the design processes – addressing issues that go beyond the design project being completed that semester.

Dr. Ngaile teaches Materials Processing by Deformation (MAE 731), which exposes the students to a wide range of metal forming processes including state-of-the-art techniques, and he teaches Applied Finite Element Method (MAE 589). In his applied finite element course, the focus is on developing the capability to solve a wide range of problems involving solids, thermal, fluids, and vibration. In MAE he collaborates with Dr. Fang.

Dr. Ngaile’s graduate students have a strong interest in solid mechanics. They gain experiences with numerical modeling of metal forming processes and hands-on experiences with machine design.

Outside of work, Dr. Ngaile enjoys to travel.

Education

Ph.D.

Mechanical Engineering

Kumamoto University

M.S.

Mechanical Engineering

Kumamoto University

B.S.

Mechanical Engineering

University of Dar Es Salaam

Research Description

Dr. Ngaile is interested in design and manufacturing, tribology in manufacturing, modeling and optimization of manufacturing processes, material characterization, and finite element analysis. Dr. Ngaile is developing new formulations of metal forming lubricants, and is studying how to tailor metal forming processes to minimize the quantity of toxic-rich lubricants needed in these processes. Also, he is studying the influence of ultrasonic vibration on microforming processes.

Publications

Die Design Architecture for Enhancing Tool Life Via Manipulation of the Elastic Strain Field of the Dies During Extrusion Processes
Ngaile, G., & Rodrigues, D. S. (2021), JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME, 143(3). https://doi.org/10.1115/1.4048265
Modeling of a valve-type low-pressure homogenizer for oil-in-water emulsions
Pang, H., & Ngaile, G. (2021), CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 160. https://doi.org/10.1016/j.cep.2020.108249
Optimized stereo digital image correlation setup for miniature round specimen: framework development and implementation
Rahman, F., Ngaile, G., & Hassan, T. (2021), OPTICS AND LASERS IN ENGINEERING. https://doi.org/10.1016/j.optlaseng.2021.106555
A novel gripper for multiaxial mechanical testing of microtubes at elevated temperatures
Li, L., Chan, Y.-C., Ngaile, G., & Hassan, T. (2020), REVIEW OF SCIENTIFIC INSTRUMENTS, 91(5). https://doi.org/10.1063/5.0007150
Formulation of SiO2/oil nanolubricant for metal forming using hydrodynamic cavitation
Pang, H., & Ngaile, G. (2020), PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE. https://doi.org/10.1177/0954405420933120
Development of a non-isothermal forging process for hollow power transmission shafts
Pang, H., & Ngaile, G. (2019), JOURNAL OF MANUFACTURING PROCESSES, 47, 22–31. https://doi.org/10.1016/j.jmapro.2019.08.034
Development of scanning electron microscope-compatible multiaxial miniature testing system
Rahman, F., Ngaile, G., & Hassan, T. (2019), MEASUREMENT SCIENCE AND TECHNOLOGY, 30(10). https://doi.org/10.1088/1361-6501/ab1ca6
High injection pressure diesel sprays from a piezoelectric fuel injector
Wang, L., Lowrie, J., Ngaile, G., & Fang, T. (2019), APPLIED THERMAL ENGINEERING, 152, 807–824. https://doi.org/10.1016/j.applthermaleng.2019.02.095
Investigation of energy storage in bolted joint components and the development of a geometry selection design tool for Belleville washers
Carcaterra, B., & Ngaile, G. (2019), ENGINEERING STRUCTURES, 178, 436–443. https://doi.org/10.1016/j.engstruct.2018.10.049
Development of a Non-isothermal Forging Process for Hollow Power Transmission Shafts
Pang, H., & Ngaile, G. (2018), Procedia Manufacturing, 26, 1509–1516. https://doi.org/10.1016/J.PROMFG.2018.07.087

View all publications via NC State Libraries

Grants

Metal forming training and modeling of forming techniques for producing intricate metallic shapes for Y-12
(6/15/21 - 9/30/21)
Preform Design for Flash-less Die Forging
(5/04/21 - 11/03/22)
Harnessing of Pressure Waves and Micro-jets from Hydrodynamic Cavitation for Improving Manufacturing
(3/01/21 - 2/29/24)
Dynamic Digital Twin for Enhancing Forging Part Quality and Control
(7/15/20 - 1/14/22)
MRI: Acquisition of a Large High-Temperature Vacuum Press for Advanced Materials Research, Manufacturing and Training at NC State University
(8/01/20 - 7/31/23)
Development of an In-Situ Testing Laboratory for Research and Education of Very High Temperature Reactor Materials
(10/01/20 - 9/30/21)
Increasing Participation of U.S. Students to the 3rd World Congress on Micro-Nano Manufacturing (WCMNM); Raleigh NC, 10-12 September 2019
(4/01/19 - 3/31/20)
Enhancing Tool Life by Manipulating Punch & Die Elastic Strain Field during Forging
(7/15/18 - 3/15/21)
Advancements towards ASME nuclear code case for compact heat exchangers
(10/01/17 - 12/31/20)
Development of a Manufacturing Process for High-Power-Density Hollow Shafts
(7/15/16 - 5/01/19)