Dr. Paul W. Witherell is a Mechanical Engineer in the Life Cycle Engineering (LCE) Group of the Systems Integration Division (SID) of the Engineering Laboratory (EL) at the National Institute of Standards and Technology (NIST). His primary objectives at NIST are to develop and transfer knowledge to industry, including knowledge about information models for additive manufacturing and system level analysis. Research efforts aim to leverage engineering and information sciences to benefit design flexibility, cost, and cycle times in additive manufacturing . His specific job focus is on identifying integration and technology issues that promote industry acceptance of information models, product representation standards, and open architecture that will enable rapid design-to-product transformations. Dr. Witherell's primary areas of interest are Design for Additive Manufacturing, Digital Thread for Additive Manufacturing, Design Optimization, Knowledge Representation in Product Development, Ontology and Semantic Relatedness for Design and Manufacturing, and Sustainable Manufacturing.