Timothy William Simpson, PhD

    • 14980 Citations
    • 52 h-Index
    19952020

    Research output per year

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    2020

    Design for metal powder bed fusion: The geometry for additive part selection (GAPS) worksheet

    Bracken, J., Pomorski, T., Armstrong, C., Prabhu, R., Simpson, T. W., Jablokow, K., Cleary, W. & Meisel, N. A., Oct 2020, In : Additive Manufacturing. 35, 101163.

    Research output: Contribution to journalArticle

    Mechanical properties of additively manufactured metal lattice structures: Data review and design interface

    Hanks, B., Berthel, J., Frecker, M. & Simpson, T. W., Oct 2020, In : Additive Manufacturing. 35, 101301.

    Research output: Contribution to journalArticle

    2019

    Assessment of anisotropic mechanical properties of a 3D printed carbon whisker reinforced composite

    Bakis, C. E., Haluza, R. T., Bartolai, J., Kim, J. J. & Simpson, T. W., Jan 1 2019, In : Advanced Composite Materials. 28, 5, p. 545-560 16 p.

    Research output: Contribution to journalArticle

    1 Scopus citations

    Full Field Strain Measurement of Material Extrusion Additive Manufacturing Parts with Solid and Sparse Infill Geometries

    Bartolai, J., Wilson-Heid, A. E., Kruse, J. R., Beese, A. M. & Simpson, T. W., Mar 15 2019, In : JOM. 71, 3, p. 871-879 9 p.

    Research output: Contribution to journalArticle

    3 Scopus citations
    1 Scopus citations
    2018

    Achieving Functionally Graded Material Composition Through Bicontinuous Mesostructural Geometry in Material Extrusion Additive Manufacturing

    Stoner, B., Bartolai, J., Kaweesa, D. V., Meisel, N. A. & Simpson, T. W., Mar 1 2018, In : JOM. 70, 3, p. 413-418 6 p.

    Research output: Contribution to journalArticle

    2 Scopus citations

    A method to evaluate direct and indirect design dependencies between components in a product architecture

    Jung, S., Asikoglu, O. & Simpson, T. W., Oct 1 2018, In : Research in Engineering Design. 29, 4, p. 507-530 24 p.

    Research output: Contribution to journalArticle

    1 Scopus citations

    A model for multi-input mechanical advantage in origami-based mechanisms

    Butler, J., Bowen, L., Wilcox, E., Shrager, A., Frecker, M. I., von Lockette, P., Simpson, T. W., Lang, R. J., Howell, L. L. & Magleby, S. P., Dec 1 2018, In : Journal of Mechanisms and Robotics. 10, 6, 061007.

    Research output: Contribution to journalArticle

    4 Scopus citations

    Design and evaluation of an additively manufactured aircraft heat exchanger

    Saltzman, D., Bichnevicius, M., Lynch, S. P., Simpson, T. W., Reutzel, E. W., Dickman, C. & Martukanitz, R., Jun 25 2018, In : Applied Thermal Engineering. 138, p. 254-263 10 p.

    Research output: Contribution to journalArticle

    12 Scopus citations
    5 Scopus citations

    Experimental sampling of the Z-axis error and laser positioning error of an EOSINT M280 DMLS machine

    Lu, Y., Badarinath, R., Lehtihet, E. A., De Meter, E. C. & Simpson, T. W., May 2018, In : Additive Manufacturing. 21, p. 501-516 16 p.

    Research output: Contribution to journalArticle

    2 Scopus citations

    Glasses-type wearable computer displays: usability considerations examined with a 3D glasses case study

    Chang, J., Moon, S. K., Jung, K., Kim, W., Parkinson, M. B., Freivalds, A., Simpson, T. W. & Baik, S. P., May 4 2018, In : Ergonomics. 61, 5, p. 670-681 12 p.

    Research output: Contribution to journalArticle

    2 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

    5 Scopus citations

    Milling of Inconel 718 block supports fabricated using laser powder bed fusion

    Tripathi, V., Armstrong, A., Gong, X., Manogharan, G., Simpson, T. & De Meter, E., Aug 2018, In : Journal of Manufacturing Processes. 34, p. 740-749 10 p.

    Research output: Contribution to journalArticle

    6 Scopus citations

    Predicting strength of additively manufactured thermoplastic polymer parts produced using material extrusion

    Bartolai, J., Simpson, T. W. & Xie, R., Jan 1 2018, In : Rapid Prototyping Journal. 24, 2, p. 321-332 12 p.

    Research output: Contribution to journalArticle

    12 Scopus citations
    1 Scopus citations
    2017

    Adding Value to Trade Space Exploration When Designing Complex Engineered Systems

    Simpson, T. W., Miller, S., Tibor, E. B., Yukish, M. A., Stump, G., Kannan, H., Mesmer, B., Winer, E. H. & Bloebaum, C. L., Mar 2017, In : Systems Engineering. 20, 2, p. 131-146 16 p.

    Research output: Contribution to journalArticle

    4 Scopus citations

    A sequential decision process for the system-level design of structural frames

    Unal, M., Miller, S. W., Chhabra, J. P. S., Warn, G. P., Yukish, M. A. & Simpson, T. W., Nov 1 2017, In : Structural and Multidisciplinary Optimization. 56, 5, p. 991-1011 21 p.

    Research output: Contribution to journalArticle

    7 Scopus citations

    Comparisons of laser powder bed fusion additive manufacturing builds through experimental in situ distortion and temperature measurements

    Dunbar, A. J., Denlinger, E. R., Gouge, M. F., Simpson, T. W. & Michaleris, P., May 1 2017, In : Additive Manufacturing. 15, p. 57-65 9 p.

    Research output: Contribution to journalArticle

    22 Scopus citations

    Design, fabrication, and modeling of an electric-magnetic self-folding sheet

    Bowen, L., Springsteen, K., Ahmed, S., Arrojado, E., Frecker, M., Simpson, T. W., Ounaies, Z. & Lockette, P. V., Apr 1 2017, In : Journal of Mechanisms and Robotics. 9, 2, 021012.

    Research output: Contribution to journalArticle

    13 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

    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

    New modularity indices for modularity assessment and clustering of product architecture

    Jung, S. & Simpson, T. W., Jan 2 2017, In : Journal of Engineering Design. 28, 1, p. 1-22 22 p.

    Research output: Contribution to journalArticle

    21 Scopus citations

    Preparing industry for additive manufacturing and its applications: Summary & recommendations from a National Science Foundation workshop

    Simpson, T. W., Williams, C. B. & Hripko, M., Jan 1 2017, In : Additive Manufacturing. 13, p. 166-178 13 p.

    Research output: Contribution to journalArticle

    39 Scopus citations
    30 Scopus citations
    1 Scopus citations
    2016

    An integrated approach to product family redesign using commonality and variety metrics

    Jung, S. & Simpson, T. W., Oct 1 2016, In : Research in Engineering Design. 27, 4, p. 391-412 22 p.

    Research output: Contribution to journalArticle

    22 Scopus citations

    Bistable compliant mechanism using magneto active elastomer actuation

    Crivaro, A., Sheridan, R., Frecker, M., Simpson, T. W. & Von Lockette, P., Aug 1 2016, In : Journal of Intelligent Material Systems and Structures. 27, 15, p. 2049-2061 13 p.

    Research output: Contribution to journalArticle

    34 Scopus citations

    Development of experimental method for in situ distortion and temperature measurements during the laser powder bed fusion additive manufacturing process

    Dunbar, A. J., Denlinger, E. R., Heigel, J., Michaleris, P., Guerrier, P., Martukanitz, R. & Simpson, T. W., Oct 1 2016, In : Additive Manufacturing. 12, p. 25-30 6 p.

    Research output: Contribution to journalArticle

    44 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

    Global Views on Modular Design Research: Linking Alternative Methods to Support Modular Product Family Concept Development

    Otto, K., Hölttä-Otto, K., Simpson, T. W., Krause, D., Ripperda, S. & Moon, S. K., Jul 1 2016, In : Journal of Mechanical Design, Transactions Of the ASME. 138, 7, 071101.

    Research output: Contribution to journalArticle

    33 Scopus citations

    Predicting Coherency Loss of γ Precipitates in IN718 Superalloy

    Ji, Y., Lou, Y., Qu, M., Rowatt, J. D., Zhang, F., Simpson, T. W. & Chen, L. Q., Jun 1 2016, In : Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 47, 6, p. 3235-3247 13 p.

    Research output: Contribution to journalArticle

    20 Scopus citations
    8 Scopus citations

    Toward Rapid Manufacturability Analysis Tools for Engineering Design Education

    Lynn, R., Saldana, C., Kurfess, T., Reddy, N., Simpson, T., Jablokow, K., Tucker, T., Tedia, S. & Williams, C., Jan 1 2016, In : Procedia Manufacturing. 5, p. 1183-1196 14 p.

    Research output: Contribution to journalArticle

    8 Scopus citations

    Trade space exploration of magnetically actuated origami mechanisms

    Bowen, L., Springsteen, K., Frecker, M. I. & Simpson, T. W., Jun 1 2016, In : Journal of Mechanisms and Robotics. 8, 3, 031012.

    Research output: Contribution to journalArticle

    16 Scopus citations
    2015

    (Re)Designing for Part Consolidation: Understanding the Challenges of Metal Additive Manufacturing

    Schmelzle, J., Kline, E. V., Dickman, C. J., Reutzel, E. W., Jones, G. & Simpson, T. W., Nov 1 2015, In : Journal of Mechanical Design, Transactions of the ASME. 137, 11, 111711.

    Research output: Contribution to journalArticle

    58 Scopus citations

    A clustering method using new modularity indices and a genetic algorithm: With extended Chromosomes

    Jung, S. & Simpson, T. W., Sep 1 2015, In : Journal of Modern Project Management. 3, 2, p. 38-45 8 p.

    Research output: Contribution to journalArticle

    2 Scopus citations

    AM needs MEs

    Simpson, T. W., Aug 2015, Mechanical Engineering, 137, 8, p. 30-35 6 p.

    Research output: Contribution to specialist publicationArticle

    Open Access
    7 Scopus citations

    Development and validation of a dynamic model of magneto-active elastomer actuation of the origami waterbomb base

    Bowen, L., Springsteen, K., Feldstein, H., Frecker, M., Simpson, T. W. & von Lockette, P., Jan 1 2015, In : Journal of Mechanisms and Robotics. 7, 1, 011010.

    Research output: Contribution to journalArticle

    45 Scopus citations

    The impact of virtual product dissection environments on student design learning and self-efficacy

    Toh, C., Miller, S. & Simpson, T., Mar 4 2015, In : Journal of Engineering Design. 26, 1-3, p. 48-73 26 p.

    Research output: Contribution to journalArticle

    17 Scopus citations
    2014

    Effects of weight balance on a 3D TV shutter type glasses: Subjective discomfort and physical contact load on the nose

    Chang, J., Jung, K., Kim, W., Moon, S. K., Freivalds, A., Simpson, T. W. & Baik, S. P., Nov 1 2014, In : International Journal of Industrial Ergonomics. 44, 6, p. 801-809 9 p.

    Research output: Contribution to journalArticle

    7 Scopus citations

    Metamodeling in multidisciplinary design optimization: How far have we really come?

    Viana, F. A. C., Simpson, T. W., Balabanov, V. & Toropov, V., Apr 2014, In : AIAA journal. 52, 4, p. 670-690 21 p.

    Research output: Contribution to journalArticle

    199 Scopus citations

    Platform design variable identification for a product family using multi-objective particle swarm optimization

    Moon, S. K., Park, K. J. & Simpson, T. W., Apr 2014, In : Research in Engineering Design. 25, 2, p. 95-108 14 p.

    Research output: Contribution to journalArticle

    46 Scopus citations

    Toward Metamodels for Composable and Reusable Additive Manufacturing Process Models

    Witherell, P., Feng, S., Simpson, T. W., Saint John, D. B., Michaleris, P., Liu, Z., Chen, L. & Martukanitz, R., Dec 1 2014, In : Journal of Manufacturing Science and Engineering, Transactions of the ASME. 136, 6, 061025-1.

    Research output: Contribution to journalArticle

    43 Scopus citations
    2013
    3 Scopus citations

    A study on situated cognition: Product dissection's effect on redesign activities

    Grantham, K., Kremer, G. E. O., Simpson, T. W. & Ashour, O., Dec 11 2013, In : Advances in Engineering Education. 3, 4

    Research output: Contribution to journalArticle

    3 Scopus citations

    Many objective visual analytics: Rethinking the design of complex engineered systems

    Woodruff, M. J., Reed, P. M. & Simpson, T. W., Jul 1 2013, In : Structural and Multidisciplinary Optimization. 48, 1, p. 201-219 19 p.

    Research output: Contribution to journalArticle

    75 Scopus citations