Abdalla Ramadan Nassar

    • 396 Citations
    • 13 h-Index
    20082020

    Research output per year

    If you made any changes in Pure these will be visible here soon.

    Research Output

    2020

    In-process monitoring of porosity in additive manufacturing using optical emission spectroscopy

    Montazeri, M., Nassar, A. R., Dunbar, A. J. & Rao, P., May 3 2020, In : IISE Transactions. 52, 5, p. 500-515 16 p.

    Research output: Contribution to journalArticle

    1 Scopus citations

    Model-based feedforward control of laser powder bed fusion additive manufacturing

    Wang, Q., Michaleris, P. P., Nassar, A. R., Irwin, J. E., Ren, Y. & Stutzman, C. B., Jan 2020, In : Additive Manufacturing. 31, 100985.

    Research output: Contribution to journalArticle

    Open Access
    2019
    19 Scopus citations

    Formation processes for large ejecta and interactions with melt pool formation in powder bed fusion additive manufacturing

    Nassar, A. R., Gundermann, M. A., Reutzel, E. W., Guerrier, P., Krane, M. H. & Weldon, M. J., Dec 1 2019, In : Scientific reports. 9, 1, 5038.

    Research output: Contribution to journalArticle

    Open Access
    4 Scopus citations

    Heterogeneous sensor-based condition monitoring in directed energy deposition

    Montazeri, M., Nassar, A. R., Stutzman, C. B. & Rao, P., Dec 2019, In : Additive Manufacturing. 30, 100916.

    Research output: Contribution to journalArticle

    1 Scopus citations
    2018
    24 Scopus citations

    Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing

    Dunbar, A. J. & Nassar, A. R., Jan 2 2018, In : Virtual and Physical Prototyping. 13, 1, p. 14-19 6 p.

    Research output: Contribution to journalArticle

    11 Scopus citations

    Build height control in directed energy deposition using a model-based feed-forward controller

    Wang, Q., Li, J., Nassar, A. R., Reutzel, E. W. & Mitchell, W., Jan 1 2018, Control and Optimization of Connected and Automated Ground Vehicles; Dynamic Systems and Control Education; Dynamics and Control of Renewable Energy Systems; Energy Harvesting; Energy Systems; Estimation and Identification; Intelligent Transportation and Vehicles; Manufacturing; Mechatronics; Modeling and Control of IC Engines and Aftertreatment Systems; Modeling and Control of IC Engines and Powertrain Systems; Modeling and Management of Power Systems. American Society of Mechanical Engineers (ASME), (ASME 2018 Dynamic Systems and Control Conference, DSCC 2018; vol. 2).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Scopus citations
    6 Scopus citations

    Impact of compositional gradients on selectivity of dissolvable support structures for directed energy deposited metals

    Lefky, C. S., Zucker, B., Nassar, A. R., Simpson, T. W. & Hildreth, O. J., Jul 2018, In : Acta Materialia. 153, p. 1-7 7 p.

    Research output: Contribution to journalArticle

    4 Scopus citations
    12 Scopus citations
    2017
    10 Scopus citations

    Dissolvable Supports in Powder Bed Fusion-Printed Stainless Steel

    Lefky, C. S., Zucker, B., Wright, D., Nassar, A. R., Simpson, T. W. & Hildreth, O. J., Mar 2017, In : 3D Printing and Additive Manufacturing. 4, 1, p. 3-11 9 p.

    Research output: Contribution to journalArticle

    17 Scopus citations
    10 Scopus citations
    9 Scopus citations

    Fast authentication of metal additive manufacturing

    Flank, S., Nassar, A. R., Simpson, T. W., Valentine, N. & Elburn, E., Aug 2017, In : 3D Printing and Additive Manufacturing. 4, 3, p. 143-147 5 p.

    Research output: Contribution to journalArticle

    3 Scopus citations

    Flaw detection in powder bed fusion using optical imaging

    Abdelrahman, M., Reutzel, E. W., Nassar, A. R. & Starr, T. L., May 1 2017, In : Additive Manufacturing. 15, p. 1-11 11 p.

    Research output: Contribution to journalArticle

    27 Scopus citations
    21 Scopus citations
    2016

    Digital data requirements for powder bed fusion additive manufacturing and the implementation of a transparent communication architecture

    Dunbar, A. J., Nassar, A. R., Reutzel, E. W. & Blecher, J. J., Jan 1 2016, SAMPE Long Beach 2016 Conference and Exhibition. Soc. for the Advancement of Material and Process Engineering, (International SAMPE Technical Conference; vol. 2016-January).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Scopus citations

    Dissolvable metal supports for 3D direct metal printing

    Hildreth, O. J., Nassar, A. R., Chasse, K. R. & Simpson, T. W., Jun 1 2016, In : 3D Printing and Additive Manufacturing. 3, 2, p. 91-97 7 p.

    Research output: Contribution to journalArticle

    19 Scopus citations
    20 Scopus citations

    Reduced-order multivariable modeling and nonlinear control of melt-pool geometry and temperature in directed energy deposition

    Wang, Q., Li, J., Gouge, M., Nassar, A. R., Michaleris, P. & Reutzel, E. W., Jul 28 2016, 2016 American Control Conference, ACC 2016. Institute of Electrical and Electronics Engineers Inc., p. 845-851 7 p. 7525019. (Proceedings of the American Control Conference; vol. 2016-July).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Scopus citations

    Sensing for directed energy deposition and powder bed fusion additive manufacturing at Penn State University

    Nassar, A. R., Reutzel, E. W., Brown, S. W., Morgan, J. P., Morgan, J. P., Natale, D. J., Tutwiler, R. L., Feck, D. P. & Banks, J. C., Jan 1 2016, Laser 3D Manufacturing III. Pique, A., Gu, B. & Helvajian, H. (eds.). SPIE, 97380R. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 9738).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    7 Scopus citations

    Student outcomes of short-term international humanitarian engineering fieldwork

    Nassar, A. R., Holmes, K. & Mehta, K., Nov 28 2016, FIE 2016 - Frontiers in Education 2016: The Crossroads of Engineering and Business. Institute of Electrical and Electronics Engineers Inc., 7757494. (Proceedings - Frontiers in Education Conference, FIE; vol. 2016-November).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Scopus citations
    2015

    3D spatial reconstruction of thermal characteristics in directed energy deposition through optical thermal imaging

    Kriczky, D. A., Irwin, J., Reutzel, E. W., Michaleris, P., Nassar, A. R. & Craig, J., Jul 1 2015, In : Journal of Materials Processing Technology. 221, p. 172-186 15 p.

    Research output: Contribution to journalArticle

    16 Scopus citations

    A brief survey of sensing for metal-based powder bed fusion additive manufacturing

    Foster, B. K., Reutzel, E. W., Nassar, A. R., Dickman, C. J. & Hall, B. T., Jan 1 2015, Dimensional Optical Metrology and Inspection for Practical Applications IV. Zhang, S., Yoshizawa, T. & Harding, K. G. (eds.). SPIE, 94890B. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 9489).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    10 Scopus citations
    14 Scopus citations
    37 Scopus citations

    Chang'aa Culture and Process: Detecting Contamination in a Killer Brew

    Carey, K., Kinney, J., Eckman, M., Nassar, A. & Mehta, K., Jan 1 2015, In : Procedia Engineering. 107, p. 395-402 8 p.

    Research output: Contribution to journalConference article

    3 Scopus citations

    Intra-layer closed-loop control of build plan during directed energy additive manufacturing of Ti-6Al-4V

    Nassar, A. R., Keist, J. S., Reutzel, E. W. & Spurgeon, T. J., Apr 1 2015, In : Additive Manufacturing. 6, p. 39-52 14 p.

    Research output: Contribution to journalArticle

    35 Scopus citations
    2014

    An Interactive Nutritional Guide to develop low-cost healthy meals while sustaining indigenous foods

    Liguori, K., Nassar, A. & Mehta, K., Dec 1 2014, Proceedings of the 4th IEEE Global Humanitarian Technology Conference, GHTC 2014. Institute of Electrical and Electronics Engineers Inc., p. 145-151 7 p. 6970274. (Proceedings of the 4th IEEE Global Humanitarian Technology Conference, GHTC 2014).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Importance of interactive small group discussions to educate community health workers

    Paul, L., Warkulwiz, G., Nassar, A. & Mehta, K., Jan 1 2014, In : Procedia Engineering. 78, p. 299-305 7 p.

    Research output: Contribution to journalConference article

    2 Scopus citations
    2013

    A proposed digital thread for additive manufacturing

    Nassar, A. R. & Reutzel, E. W., Jan 1 2013, p. 19-43. 25 p.

    Research output: Contribution to conferencePaper

    17 Scopus citations

    Gutter design and selection for roof rainwater catchment systems

    Zankowski, J., Sun, Y., Poon, C., Passauer, E., Nassar, A. & Mehta, K., Jan 1 2013, Proceedings of the 3rd IEEE Global Humanitarian Technology Conference, GHTC 2013. IEEE Computer Society, p. 226-231 6 p. 6713685. (Proceedings of the 3rd IEEE Global Humanitarian Technology Conference, GHTC 2013).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Scopus citations

    The feasibility of rice bags as a low-cost and locally available alternative to greenhouse glazing

    Bement, S. T., Nassar, A. R. & Mehta, K., Jan 1 2013, Proceedings of the 3rd IEEE Global Humanitarian Technology Conference, GHTC 2013. IEEE Computer Society, p. 254-259 6 p. 6713690

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Scopus citations
    2012

    Investigations of laser-sustained plasma and its role in laser nitriding of titanium

    Nassar, A. R., Akarapu, R., Copley, S. M. & Todd, J. A., May 9 2012, In : Journal of Physics D: Applied Physics. 45, 18, 185401.

    Research output: Contribution to journalArticle

    14 Scopus citations
    2009

    Generation and characterization of laser sustainted plasmas of argon and AR-C02 mixtures under various flow conditions

    Akarapu, R., Nassar, A. R., Copley, S. M. & Todd Copley, J., Nov 10 2009, 2009 IEEE International Conference on Plasma Science - Abstracts, ICOPS 2009. 5227451

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Numerical model of a laser-sustained argon plasma

    Akarapu, R., Nassar, A. R., Copley, S. M. & Todd Copley, J., Dec 1 2009, In : Journal of Laser Applications. 21, 4, p. 169-175 7 p.

    Research output: Contribution to journalArticle

    4 Scopus citations
    2008

    Characterization of spectral emissions from laser irradiated titanium

    Akarapu, R. K., Dua, P., Campbell, A., Scott, D., Nassar, A., Todd, J. & Copley, S., Dec 1 2008, Nitrides and Related Bulk Materials. p. 25-30 6 p. (Materials Research Society Symposium Proceedings; vol. 1040).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Scopus citations