Liddell Research Group

Purdue University Mechanical Engineering and Sustainability Engineering & Environmental Engineering

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Heather P.H. Liddell

Assistant Professor

Purdue University, West Lafayette, Indiana, USA


Based at Purdue, the Liddell research group applies interdisciplinary engineering approaches to address multiscale research challenges in manufacturing sustainability and mechanics of multilayered systems. Our group includes members from the departments of Mechanical Engineering and Environmental & Ecological Engineering.

Some of our current research interests include:

  • industrial decarbonization strategies
  • environmental life cycle assessment for early-stage manufacturing technologies
  • sustainable supply chains and circularity
  • energy and environmental consequences of the electric vehicle transition
  • fracture mechanics in multilayer systems
  • adhesion of paints and coatings


    • For more details, take a look at our People, Teaching, and Publications pages.

    news

    Sep 28, 2025 The Liddell Research Group recently returned from a great trip to Atlanta for the 2025 American Center for Life Cycle Assessment (ACLCA) conference. Congratulations to PhD student Heyichen Xu, who won first place in the student poster competition for her research poster, “How Old is Too Old? Quantifying the Problem of Temporal Representativeness in Life Cycle Inventory (LCI) Data.” Also, Dr. Liddell won ACLCA’s 2025 Michael Levy Rising Star Award.
    Jul 26, 2025 Congratulations to Tripta Bhattacharjee on his new first-author paper in Procedia CIRP: Re-investment Rebound Dynamic in the Cement Industry. Tripta previously presented this research at the CIRP LCE conference (in Manchester, UK) in April 2025.
    Jun 14, 2025 New papers: we are excited to share two new papers from our group, both published in June 2025: one in Resources, Conservation, and Recycling and one in the Journal of Advanced Manufacturing and Processing. Congratulations to the authors!
    Apr 17, 2025 Congratulations to Beth Kelley for successfully defending her M.S. thesis, “Data foundation for a simultaneously physically and environmentally extended economic input-output model framework”. Well done!!
    Sep 28, 2024 Congratulations to Catherine Mejia and Beth Kelley for winning first and second prize, respectively, in the student poster competition at the 2024 American Center for Life Cycle Assessment (ACLCA) annual conference in Snowbird, Utah. Great showing for our group!