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Safety and Usability Design Method Based on Gaps Between Designer and User

[+] Author Affiliations
Tamotsu Murakami, Takashi Yasumi, Naoyuki Togo, Kazutaka Ueda

The University of Tokyo, Tokyo, Japan

Yasunobu Sano

YANMAR Co., Ltd., Maibara, Shiga, Japan

Paper No. DETC2014-34218, pp. V007T07A032; 9 pages
  • ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 7: 2nd Biennial International Conference on Dynamics for Design; 26th International Conference on Design Theory and Methodology
  • Buffalo, New York, USA, August 17–20, 2014
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-4640-7
  • Copyright © 2014 by ASME


It is very important for designers to ensure the safety and usability of products. In this paper, a gap model between designers and users is first proposed as a framework to detect problems in safety and usability and to analyze the causes. Then methods to describe operations on a product, simulate its behavior as state transitions, and detect safety and effectiveness gaps based on temporal intervals and their qualitative relationships are proposed. The proposed methods are implemented in a gap analysis program (GAP), which is used to analyze the operations of a tractor by eight general participants and four employees of a tractor-manufacturer. As a result, potential safety and effectiveness gaps are correctly detected.

Copyright © 2014 by ASME



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