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Dr. Greg Hetland

Dr. Hetland has 30+ years experience in the aerospace, defense, medical, disc drive, and commercial industries, with extensive expertise in the mechanical and precision engineering fields as an engineer, consultant, educator, and author. He has extensive technical society affiliation and 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 dimensional tolerancing, physical metrology and uncertainty analysis with emphasis in the sub-micrometer regime.

Dan Goldman graduated from Michigan Technological University with a bachelor’s degree in Mechanical Engineering. He has 7+ years experience with Honeywell as a mechanical design engineer on both Ring Laser Gyro and Rate Sensor technologies. While working for Honeywell, he has completed a Masters of Science in Technology Management from the University of St. Thomas, and has been certified as a Six Sigma Black Belt.

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Inertial Sensor Components Achieving Higher Mechanical Precision with Profile Tolerancing

December 12, 2011

By Dan Goldman and Dr. Greg Hetland

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Figure 1: This gyroscope housing represents typical complex surface geometries. The features on this part represent a collection of small arc radii and are used within this article to demonstrate

Inertial Sensor Components Achieving Higher Mechanical Precision with Profile Tolerancing

December 2, 2011

By Dan Goldman and Dr. Greg Hetland

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A commitment to precision GD&T using profile tolerancing and other key geometric controls is essential for establishing a true partnership between OEMs and suppliers.

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A Practical Field Guide for ISO 9001:2008

The purpose of this field guide is to assist organizations, step by step, in implementing a quality management system (QMS) in conformance with ISO 9001:2008, whether from scratch or by transitioning from ISO 9001:2000. It examines each sub-clause of Sections 4–8 of ISO 9001:2008, which contain the requirements, and gives a list of the documentation/documents required, internal audit questions, a summary of management’s responsibilities, and a flowchart of the steps that need to be undertaken to satisfy the requirements.

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