Steven MacLean, Ph.D., P.E.
`Practice Director and Principal Engineer | Polymer Science and Materials Chemistry
`1075 Worcester Street | Natick, MA 01760
`+1-585-387-0327 tel | smaclean@exponent.com
`
`Professional Profile
`Dr. MacLean is the Practice Director and a Principal of Exponent’s Polymer Science and Materials
`Chemistry Practice. His research is focused on the chemical and physical behavior of polymeric materials
`in end-use applications.
`
`Dr. MacLean's specialties include part design and analysis, failure analysis, material specification,
`formulation-structure-property relationships, testing, as well as patent and trade secret analysis. He has
`studied various polymer failure mechanisms including stress overload, creep rupture, fatigue,
`environmental stress cracking, delamination and weathering. Throughout his career he has evaluated the
`suitability of materials for the automotive, sporting goods, medical and drug delivery device, consumer
`products, oil and gas, electrical, pipe, and construction industries. Dr. MacLean assists clients in
`assessing risk in all stages of product life including product development, reliability testing and long-term
`field performance.
`
`Dr. MacLean is well versed in product recall investigations led by the Consumer Product Safety
`Commission (CPSC), the National Highway Traffic Safety Administration (NHTSA) and the National
`Transportation Safety Board (NTSB). He is familiar with the processes of each federal agency regarding
`the investigation, analysis, and remedies of underperforming products and components. Dr. MacLean is
`also familiar with testing and material standards published by ASTM International, International Standards
`Organization (ISO), Underwriters Laboratories (UL), International Electrotechnical Commission (IEC) and
`the Society of Automotive Engineers (SAE).
`
`Over the past 25 years, Dr. MacLean has worked on a variety finished goods produced from polymer and
`composite manufacturing processes including injection molding, compression molding, blow molding,
`blown film, rotational molding, extrusion, fiber spinning, thermoforming, calendering, and laminating. In
`addition, he has investigated material systems which include secondary operations such as metallic
`plating, coatings, adhesives, paints and welding.
`
`Prior to joining Exponent, Dr. MacLean spent 16 years in the polymer manufacturing industry at General
`Electric (GE) Plastics and SABIC where he held several technical and leadership positions of increasing
`responsibility. His responsibilities included material development, processing and selection, testing for
`high-demand applications, product safety assessments, failure analysis, and intellectual property
`analysis.
`
`Academic Credentials & Professional Honors
`Ph.D., Materials Science, University of Rochester, 2007
`
`M.S., Materials Science and Engineering, Rochester Institute of Technology, 2001
`
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`M.E., Mechanical Engineering, Rensselaer Polytechnic Institute, 1997
`
`B.S., Mechanical Engineering, Rensselaer Polytechnic Institute, 1993
`
`Tau Beta Pi
`
`Pi Tau Sigma
`
`Society of Plastics Engineers ANTEC Best Paper Award
`
`Licenses and Certifications
`Professional Engineer, Maryland, #41592
`
`Professional Engineer, New York, #79001
`
`Six Sigma Black Belt Certification (CSSBB)
`
`Prior Experience
`Director, Global Agency Relations & Product Safety, SABIC Innovative Plastics, 2007-2011
`
`Global Technical Manager, General Electric Plastics, 2003-2007
`
`Six Sigma Black Belt, General Electric Plastics, 2001-2003
`
`Senior Application Development Engineer, General Electric Plastics, 1998-2001
`
`Plastic Design and Analysis Leader, General Electric Plastics, 1996-1998
`
`Edison Engineer, Lockheed Martin Corporation, (Formerly General Electric Aerospace), 1994-1996
`
`Professional Affiliations
`Society of Plastics Engineers (Senior Member)
`
`SPE Failure Analysis & Prevention Group - Board Member and Treasurer
`
`ASTM D20 Plastics Committee Member
`
`Plastic Pipe Institute (PPI) Member
`
`Publications
`Vytiniotis A, MacLean, Sykora, D. Laboratory testing and engineering analysis of an underground
`stormwater detention system. Proceedings, Geo-Congress, 2020.
`
`Lyons C, Farzana A, MacLean S, Siskey R, Donthu, S. Environmental stress cracking failure of
`amorphous polymer materials. Proceedings, ANTEC, 2019.
`
`Ansari F, Lyons C, MacLean S, Siskey R, Donthu, S. Mechanical characterization and fractography of
`PC, ABS and PMMA - a comparison of tensile, impact and ESC fracture surfaces. Proceedings, ANTEC,
`2017.
`
`Benight S, MacLean S, Garcia M, Moll, J. Microscopy of intentionally oxidized polypropylene-based mesh
`
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`material. Proceedings, ANTEC, 2016.
`
`MacLean SB, et al. Fractographic examination and tensile property evaluation of 3D printed acrylonitrile
`butadiene styrene (ABS). Proceedings, ANTEC, 2015.
`
`MacLean SB, et al. Fractographic examination of failures in polycarbonate and polyoxymethylene due to
`impact, tensile, fatigue and creep mechanisms. Proceedings, ANTEC, 2013.
`
`MacLean SB, et al. Comparison of mass transit material flammability requirements and trends for aircraft
`and train applications in Europe and North America. Proceedings, ANTEC, 2012.
`
`MacLean SB, et al. Comparison of mass transit material flammability requirements and trends for aircraft
`and train applications in Europe and North America. Proceedings, EUROTEC, 2011.
`
`MacLean SB, et al. Root cause investigation of cracked polycarbonate blender jars. Proceedings,
`ANTEC, 2010.
`
`MacLean SB. Plastics, electronics and the environment: How new global regulations affect material
`choices. Kunststoffe International 2008 Sept; 97-100.
`
`MacLean SB. Plastics, electronics and the environment: How new global regulations affect material
`choices. Telepati Aylik Telekom 2008 Mar; 74-77.
`
`MacLean SB, et al. Monolayer barrier for small engine fuel tanks. Plastics Technology Online 2007 June.
`
`MacLean SB. Environmental effects of poly(phenylene ether) blends due to long-term exposure to
`potable hot water. Ph.D. Dissertation, University of Rochester, 2007.
`
`MacLean SB, et al. The effects of recycling and heat history for select high polymers. Proceedings,
`ANTEC 2001.
`
`MacLean SB, et al. Poly(phenylene ether) engineering thermoplastic provides creep resistance,
`toughness and fire resistance required for high performance pallets. Proceedings, ANTEC 2000.
`
`Presentations
`
`Vytiniotis, A, MacLean, SB. Buried Plastic Reservoirs and Tanks - Out of Sight; But Are They Out of
`Mind? American Society of Civil Engineers, Continuing education for licensed professional engineers,
`2018.
`
`MacLean SB, Moll J. The importance of polymer structure-property relationships in preventing failure in
`medical devices. Medical Grade Polymers Conference, Woburn, MA, 2015.
`
`MacLean SB. Fundamentals of plastics fractography. ANTEC, Cincinnati, OH, 2013.
`
`MacLean SB. Challenges associated with replacing metal with plastic. Material Science and Technology
`Conference, Pittsburgh, PA, 2012.
`
`MacLean SB, et al. Fractography of unfilled thermoplastic materials subjected to common mechanical
`failure modes. Material Science and Technology Conference, Pittsburgh, PA, 2012.
`
`MacLean SB. Common analytical techniques for failure analysis - A Resin Manufacturer's Perspective.
`ANTEC, Boston, MA, 2011.
`
`MacLean SB, et al. Plastic failure analysis and prevention expert panel. ANTEC, Boston, MA, 2011.
`
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`MacLean SB. Root cause investigation of cracked polycarbonate blender jars. ANTEC, Orlando, FL,
`2010.
`
`MacLean SB. Diffusion of potable hot water in poly(phenylene ether) blends. American Chemical Society
`Conference, Binghamton, NY, 2006.
`
`MacLean SB. Changes in polycarbonate and ABS mechanical properties due to multiple heat histories.
`Society of Plastics Engineers ANTEC, Dallas, TX, 2001 (with Korzen).
`
`MacLean SB. Yield Improvement for gas assist panels using statistical methods. Society for the Plastics
`Industry Conference, Vancouver, BC, 2000.
`
`MacLean SB. Design methodologies for metal to plastic conversion. General Electric Plastics Innovation
`Seminar, Columbus OH, 2000.
`
`MacLean SB. Fundamentals of polymer science. General Electric Plastics Customer Design Workshop,
`Pittsfield, MA, 1998, 1999.
`
`MacLean SB. Designing for injection molded parts. General Electric Plastics Customer Design Workshop,
`Pittsfield, MA, 1998, 1999.
`
`MacLean SB. Mechanical behavior of polymeric materials. General Electric Plastics Engineering
`Workshop, Pittsfield, MA, 1997.
`
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`Testimony of Steven MacLean, Ph.D., P.E.
`
`Workhorse Custom Chassis, LLC v. Robert Bosch LLC (Marion Superior Court of Indiana), October
`2012 (Deposition)
`
`Trice, et al. v. Toyota Motor Corporation, et al. (United States District Court – District of Minnesota),
`August 2013 (Deposition), January 2015 (Trial)
`
`Alberto, et al. v. Toyota Motor Corporation, et al. (Genesee County, Michigan), November 2013
`(Deposition)
`
`Metropolitan Property & Casualty Insurance v. LG Electronics, et al. (United States District Court –
`District of Arizona), August 2014 (Deposition)
`
`Nease v. Ford Motor Company (United States District Court of West Virginia – Huntington Division),
`December 2014 (Deposition), March 2015 (Trial)
`
`Wubker, et al. v. A&A Manufacturing Company, et al. (Santa Fe County, New Mexico), January 2015
`(Deposition)
`
`Promethean Insulation Technology LLC v. Reflectix, Inc., et al. (United States District Court of Eastern
`Texas – Marshall Division), June 2015 (Deposition), October 2015 (Trial)
`
`Nettleton, et al. v. Ford Motor Company (United States District Court Northern District of California –
`San Francisco Division), July 2015 (Deposition)
`
`Mullins, et al. v. Ethicon, Inc., (United States District Court Southern District of West Virginia –
`Charleston Division), September 2015 (Deposition)
`
`Hower v. Excel Industries, Inc., et al. (United States District Court Western District of Missouri –
`Southern Division), November 2015 (Deposition)
`
`Brunswick Woodworking Company, Inc. et al. v. Slocum Adhesives Corp., et al., (Circuit Court for
`Montgomery County, Maryland), January 2016 (Deposition)
`
`MDL No. 2327 In Re Ethicon, Inc., Pelvic Repair System Products Liability Litigation, (United States
`District Court Southern District of West Virginia – Charleston Division), April 2016 (Deposition)
`
`Eli Lilly and Company, et al. v. Lupin Pharmaceuticals, Inc., et al., (United States District Court
`Southern District of Indiana – Indianapolis Division), April 2016 (Deposition), July 2016 (Trial)
`
`Brown v. Drop Zone Portable Services, Inc., et al., (Circuit Court of Cook County, Illinois County
`Department, Law Division), October 2016 (Deposition), April 2017 (Trial)
`
`Zavala v. Culligan International Company, et al., (District Court of Bexar County, Texas), February
`2017 (Deposition)
`
`
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`Lifetime Products, Inc. v. Maxchief Investments, Ltd., (American Arbitration Association –
`International Centre for Dispute Resolution, San Francisco, California), March 2017 (Deposition), May
`2017 (Hearing)
`
`Kathryn Gill et al., v. Ethicon Sàrl, Ethicon Inc. and Johnson & Johnson Medical Pty Ltd, (Federal
`Court of Australia, Sydney, New South Wales), November 2017 (Trial)
`
`The Parallax Group International, LLC v. IncStores LLC, (United States District Court Central District of
`California – Southern Division), January 2018 (Deposition)
`
`Advanced Drainage Systems, Inc. v. Cultec, Inc., (United States District Court for the District of
`Connecticut), February 2018 (Deposition)
`
`Perisic v. Ashley Furniture Industries, Inc., (United States District Court Middle District of Florida),
`March 2018 (Deposition)
`
`The Estate of Virgil Victor Becker v. Forward Technologies Industries, Inc., (Superior Court of the
`State of Washington, King County), April 2018 (Deposition)
`
`Emseal Joint Systems, LTD., v. Schul International Co., LLC, et al. (United States District Court for
`the District of New Hampshire), August 2018 (Deposition)
`
`Innovations4Flooring NV, v. Välinge Innovation AB, (United States Patent and Trademark Office –
`Patent Trial and Appeal Board), October 2018 (Deposition)
`
`State of Washington v. Johnson & Johnson, et al., (Superior Court of Washington State and King
`County), November 2018 (Deposition)
`
`Utex Industries, Inc. v. Gardner Denver, Inc., (United States District Court of Southern Texas –
`Houston Division), November 2018 (Deposition), October 2019 (Deposition)
`
`Garsen v. Brickell Hardgoods Company, LLC, (State of Florida – County of Miami-Dade), December
`2018 (Deposition)
`
`Välinge Innovation AB v. Home Depot, et al., (United States District Court for the District of
`Delaware), December 2018 (Deposition), February 2019 (Deposition)
`
`American Guarantee & Liability Insurance Company v. Charlotte Pipe & Foundry Company, (United
`States District Court – Eastern District of California), March 2019 (Deposition)
`
`Salinero v. Ethicon, Inc., (United States District Court Southern for the District of Florida – Miami
`Division), March 2019 (Deposition)
`
`Houck v. Ethicon, Inc., (United States District Court for the Southern District of West Virginia –
`Charleston Division), April 2019 (Deposition)
`
`
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`PacTec, Inc. v. I.C.E. Service Group, Inc., et al., (United States District Court for the Eastern District of
`Tennessee – Northern Division), April 2019 (Deposition)
`
`Malcolm v. Reynolds Polymer Technology, Inc., et al., (United States District Court for the District of
`Colorado), May 2019 (Deposition)
`
`Lofgren v. Polaris Industries, Inc., (United States District Court for the Middle District of Tennessee),
`May 2019 (Deposition)
`
`Alger, et al. v. Fiat Chrysler Automobile Company, (United States District Court – Eastern District of
`California), August 2019 (Deposition), September 2021 (Deposition)
`
`Ellis v. Ethicon, Inc., (United States District Court for the Southern District of West Virginia –
`Charleston Division), September 2019 (Deposition)
`
`The People of the State of California v. Johnson & Johnson, et al., (The Superior Court of the State of
`California for the County of San Diego), September 2019 (Trial)
`
`DeBeneditto v. Ethicon, Inc., (United States District Court Northern District of Indiana Hammond
`Division at Lafayette), August 2020 (Deposition)
`
`PT Panarub v. Under Armour, (JAMS Arbitration, New York, New York), October 2020 (Hearing)
`
`Aurora Health Care Inc., et al. v. Steris Corporation, et al., (United States District Court for the Eastern
`District of Wisconsin – Milwaukee Division), November 2020 (Deposition)
`
`Inline Plastics Corporation v. Lacerta Group Inc., (United States District Court for the District of
`Massachusetts), January 2021 (Deposition), February 2022 (Trial)
`
`Buoniello v. Ethicon, Inc., (United States District Court for the Eastern District of New York), June 2021
`(Deposition)
`
`Torres v. Johnson & Johnson, et al., (United States District Court for the District of Massachusetts),
`January 2022 (Deposition)
`
`McBroom v. Ethicon, Inc., (United States District Court for the District of Arizona), March 2022 (Trial)
`
`Mohawk Industries, Inc. v. Equistar Chemicals, L.P., (Superior Court of Cobb County, Georgia), April
`2022 (Deposition)
`
`Abaco Drilling Technologies, LLC v. PV Fluid Products, Inc., et al., (United States District Court –
`Southern District of Texas), May 2022 (Deposition)
`
`Nestlé USA, Inc. v. Gates Corporation, et al., (Circuit Court for Arlington County, Virginia), June 2022
`(Deposition)
`
`
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`Nuwer, et al. v. Fiat Chrysler Automobile Company, (United States District Court – Southern District
`of Florida), June 2022 (Deposition)
`
`Grujic v. North American Pipe Corporation, et al., (Circuit Court of Cook County, State of Illinois),
`July 2022 (Deposition)
`
`
`
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