NACMA + Candu—Meet the Speakers

Mr. Kostadin Doytchinov (speaker, NACMA officer)

Mr. Kos Doytchinov, president of Kotem Technologies Inc holds MS Degree in mechanical engineering (precision mechanics and optics). During his 30 years of metrology experience he has been working in various positions in research institutes and industry. On the research side he has been involved in geometrical tolerance determination in CMM design, software compensation methods for geometrical and thermal errors. He was a Senior Research Officer (for 18 years) at the Institute for National Measurement Standards, National Research Council Canada – responsible for CMM metrology,1D, 2D and 3D measurements, roundness and roughness measurements. On the industrial side: software development – mathematics for metrology and GD&T, metrology systems troubleshooting and consulting. Kos is the founder of Kotem Technologies Inc.

Others Activities include:

  • 2014 Chairman of NACMA (North American Coordinate Metrology Association),
  • Canadian Representative at the ISO/TC213/WG18, WG2 – Datums, Geometrical Tolerancing; Technical Auditor for Standards Council of Canada – ISO 17025;
  • Member of ASME B89.7 committee

He has given numerous metrology courses, workshops and conference presentations in many countries

Mr. Kostadin Doytchinov

Mr. Kostadin Doytchinov

Dr. Greg Hetland (speaker, NACMA officer)

Dr. Hetland, president of the International Institute of Geometric Dimensioning & Tolerancing, has 30+ years' experience in the medical, disc-drive, aerospace, defense and commercial industries with extensive expertise in the Mechanical and Precision Engineering fields as an Engineer, Manager, Consultant, Educator and Author.

Dr. Hetland is a recognized leader in the dimensional tolerancing and physical metrology fields with extensive technical society affiliations. He is recognized worldwide as chairman and member of U.S. committees as well as U.S. representative on international standards' development in the areas of physical metrology, dimensional tolerancing and uncertainty analysis, with emphasis in the sub-micrometer regime.

Dr. Hetland consults in the areas of corporate technology forecasting, advanced measurement development, advanced mechanical design and modeling techniques, physical measurement strategies and uncertainty analysis. Dr. Hetland also teaches fundamental to advanced courses in Geometric Dimensioning and Tolerances both as public and in-house seminars around the world.

Dr. Greg Hetland

Dr. Greg Hetland

Dr. Steve Phillips (speaker, NACMA officer)

Dr. Phillips received his bachelors in mathematics, summa cum laude, from Washington State University. His masters and doctorate are in physics from the University of California at Santa Barbara. He also received an MBA in 2008.

Dr. Phillips holds 3 patents and has authored over 60 research publications in such diverse fields as chemistry, physics, applied optics, and precision engineering. He has previously worked as a research scientist and consultant in the optics industry and joined NIST in 1989 as a research scientist in the Dimensional Metrology Group. He is also currently serving on the board of directors of a US financial institution.

Dr. Phillips has worked as the Group Leader of the Large Scale Coordinate Metrology Group and also as the Program Manager for Dimensional Metrology at NIST. He has received the Department of Commerce's Bronze, Silver and Gold Medals for his work in dimensional metrology. He is currently the vice-chair the ASME B89 committee on dimensional metrology and the primary ANSI designated SME (subject matter expert) representing the United States at the International Standards Organization TC213-WG4 (dimensional measurement uncertainty) and TC213-WG10 (coordinate metrology) committees.

Dr. Steve Phillips

Dr. Steve Phillips

Mr. Gary Vale (speaker, NACMA officer)

Mr. Gary Vale has 30+ years' experience in the aerospace, defense, nuclear, automotive, military and tooling products with extensive expertise in the Mechanical and Precision Metrology fields as a Metrologist, Manager and Owner.

Mr. Vale is currently the metrology supervisor at Candu Energy in Mississauga, Canada where he mentors and supervises inspectors for the inspection of nuclear components and assemblies and is also responsible for calibration of all measuring equipment.

Previous to joining Candu Energy Mr. Vale was the owner/manager of Technical Measures Inc in Oshawa, Ontario Canada where he managed inspectors, developed procedures and Implemented the ISO 17025 accreditation from the Standards Council of Canada. (First Dimensional Lab in Canada to be accredited by the SCC to the ISO 17025 standard). Responsible for quoting all inspection work, calibration of all measuring equipment and maintaining and repairing all lab equipment. Programming of CMM to measure nuclear, aerospace, automotive, and military and tooling products. Reverse engineering of three-dimensional products. Customer liaison regarding all Quality matters from design considerations to final product.

Mr. Vale is also one of the original members of the executive steering committee for ACMC which is the Association for Coordinate Metrology Canada (ACMC) which was the name of NACMA prior to deciding the change the name to the North American Coordinate Metrology Association.

Mr. Gary Vale

Mr. Gary Vale

NACMA + Candu Organizers

Dr. Miguel Viliesid (NACMA, officer)

Dr. Miguel Viliesid has a Bachelors degree in Mechanical Engineering from the Universidad Autónoma Metrolpolitana Azcapotzalco (UAM-A) in Mexico City. He then obtained a Diplôme d'Études Apporfindies (DEA) in Vibrations and Oscillators followed by a PhD in Experimental Modal Analysis from the Faculté de Science et des Techniques de Franche-Comté in France.

Miguel worked for several years at the Insituto de Investigaciones eléctricas (IIE), a research center for the utility industry in Mexico, on projects related to steam generators, piping flexibility and flow induced vibrations in piping.

Miguel joined the Centro Nacional de Metología (CENAM), the National Metrology Institute (NMI) of Mexico since its foundation in 1993, where he has been the head of the Dimensional Metrology Section for already 20 years. He was responsible of the setup of the Dimensional Metrology laboratories, hiring personnel, implementation of the quality system, establishment of measurement capabilities and their related uncertainties being able to prove them through several international comparisons.

Miguel has published papers related to metrology, uncertainty estimation and laboratory comparisons in different international journals. He has also been representing his institute at the Comité Internationale de Logueurs (CCL) from the International Committee of Weighs and Measures (CIPM) since 1997 and has piloted several international comparisons. He joined NACMA since 2007 as the Mexican Vice-chairman for the Mexican Section. He has organized two international conferences of the organization in Mexico (2009 and 2012), and was nominated president of NACMA for the period 2011-2012.

Dr. Miguel Viliesid

Dr. Miguel Viliesid


The 2014 NACMA officers are members of national laboratories and industry leaders:

CENAM IIGDT Kotem Technologies NIST
Centro Nacional de Metrología (CENAM),
International Institute of Geometric Dimensioning & Tolerancing (IIGDT), USA Kotem Technologies Inc.,
National Institute of Standards and Technology (NIST),