Lisa Lallo

Lisa M. Lallo, Ph.D.

Associate
Mechanical Engineering
Philadelphia

Dr. Lallo has an interdisciplinary background in physics, mechanical engineering, and materials science and engineering. Dr. Lallo specializes in multi-scale mechanical and failure characterization of materials and has expertise in tribological testing of interfaces and surfaces to understand friction, adhesion, and wear phenomena of interacting components. The material systems which she has investigated include polymers, composites, biomaterials, and natural materials ranging from the nanoscale through the macroscale. Dr. Lallo has studied the experimental mechanics of thin film coatings for nanotechnology, homogenous and composite free-standing sheets, laminates, and bulk materials. Dr. Lallo is well-versed in micromechanics, fiber orientation models, and contact mechanics theories.

Dr. Lallo’s specific characterization capabilities include optical and polarized light microscopy, profilometry, atomic force microscopy, nanoindentation, and scanning electron microscopy. She has experimental mechanics expertise in environmentally controlled tensile testing, 3-point bend testing, double cantilever beam fracture tests, pull-off adhesion tests, and lap shear adhesion testing. Furthermore, Dr. Lallo has experience in several additive manufacturing techniques.

Prior to joining Exponent, Dr. Lallo completed her doctoral research at the University of Pennsylvania, where she studied manufacturing and mechanics of materials comprised entirely of cellulose nanofibrils. Dr. Lallo developed a novel technique to additively manufacture millimeter-scale nanocellulose sheets and beams with high density and greatly enhanced toughness, when compared with current techniques. Dr. Lallo also controlled orientation of nanocellulose fibers via 3D printing to achieve enhanced stiffness of sheets and rapidly reduce manufacturing times. This work, conducted in collaboration with the USDA Forest Products Laboratory, motivates nanocellulose as a potential natural and biodegradable alternative to current plastics.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering and Applied Mechanics, University of Pennsylvania, 2019
  • M.S.E., Mechanical Engineering and Applied Mechanics, University of Pennsylvania, 2017
  • B.S., Physics, Saint Joseph's University, 2014
  • John A. Goff Doctoral Departmental Award, 2019

    NSF Graduate Research Fellowship, 2015-2019

    Society of Tribologists and Lubrication Engineers Philadelphia Section Student Scholarship, 2018

    John Henry Towne Fellowship (Penn), 2014

    Phi Beta Kappa Honors Society, 2013

    John P. McNulty Scholar (SJU), 2010-2014

LICENSES & CERTIFICATIONS

OSHA Forklift Operator, Classes 1,4, and 5 (2012-present)

Publications

(Maiden name: Mariani)

Mariani LM, Johnson WR III, Considine JM, Turner KT. Printing and Mechanical Characterization of Cellulose Nanofibril Materials. Cellulose 2019; 26, 4: 2639-2651.

Bradley LC, Bade, ND, Mariani LM, Turner KT, Lee D, Stebe KJ. Rough Adhesive Hydrogels (Rad gels) for Underwater Adhesion. ACS Applied Materials and Interfaces 2017; 9, 33: 27409-27413.

Mariani LM, Esposito CM, Angiolillo PJ. Observations of Stick-Slip Friction in Velcro. Tribology Letters 2014; 56, 2: 189-196.

Presentations

Invited Seminars:

Mariani LM. Mechanical properties of printed cellulose nanofibril thin films. Summer Student Research Symposium, University of Pennsylvania, Philadelphia, PA, 2019.

Mariani LM. Surface properties and mechanics of additively manufactured cellulose nanofibril films. STLE Philadelphia section, Oreland, PA, 2018.

Selected Conference Presentations and Seminars:

Mariani LM, Vankayalapati GS, Considine JM, Turner KT. Characterization of fiber alignment and mechanical properties of printed cellulose nanofibril films. Society for Experimental Mechanics, Reno, NV, 2019.

Vankayalapati GS, Pande SS, Mariani LM, Considine JM, Clemons CM, Turner KT. Preparation and characterization of cellulose nanofibril and polymer composite laminates. Society for Experimental Mechanics, Reno, NV, 2019.

Mariani LM, Turner KT. Mechanical characterization of printed cellulose nanofibril thin films. Mechanical Engineering and Applied Mechanics Departmental Seminar, University of Pennsylvania, Philadelphia, PA, 2018.

Mariani LM, Considine JM, Turner KT. Mechanical characterization of cellulose nanofibril materials made by additive manufacturing. Society for Experimental Mechanics, Greenville, SC, 2018.

Wolf S, Jiang Y, Mariani L, Liu T, Huang G, Ablajan K, Liang XX, Gilmartin P, Toledo T, Li M, Walsh P, Turner K, Fakhraai Z. Measuring hardness of stable glasses using nanoindentation, American Physics Society March Meeting, Los Angeles, CA, 2018.

Mariani LM, Turner KT. Adhesion of cellulose nanofibril thin films. Poster presentation, Gordon Research Seminars Adhesion, Mount Holyoke College, South Hadley, MA, 2015.

Mariani LM, Esposito CM, Angiolillo PJ. Stick-slip friction and ageing in Velcro. American Physics Society March Meeting, Denver, CO, 2014.

Mariani LM, Esposito CM, Angiolillo PJ. Velcro as a model system for stick-slip friction. Northeast Conference of Undergraduate Women in Physics, Cornell University, Ithaca, NY, 2013.

Prior Experience

Nanoindentation Tool Manager, University of Pennsylvania, 2017-2019

Laboratory Safety Coordinator, University of Pennsylvania, 2017-2019

Engineering Intern, Parts Life Inc., Cinnaminson, NJ, 2014

Professional Affiliations

American Society of Mechanical Engineers (ASME)

Society for Experimental Mechanics (SEM)

Society of Tribologists and Lubrication Engineers (STLE)

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Mechanical Engineering and Applied Mechanics, University of Pennsylvania, 2019
  • M.S.E., Mechanical Engineering and Applied Mechanics, University of Pennsylvania, 2017
  • B.S., Physics, Saint Joseph's University, 2014
  • John A. Goff Doctoral Departmental Award, 2019

    NSF Graduate Research Fellowship, 2015-2019

    Society of Tribologists and Lubrication Engineers Philadelphia Section Student Scholarship, 2018

    John Henry Towne Fellowship (Penn), 2014

    Phi Beta Kappa Honors Society, 2013

    John P. McNulty Scholar (SJU), 2010-2014

LICENSES & CERTIFICATIONS

OSHA Forklift Operator, Classes 1,4, and 5 (2012-present)