TRIZ Paper: Japan TRIZ Symposium 2008 Presentation


Application of TRIZ to Noise and Vibration Problem Solving -- Fusion with Traditional Theoretical and Empirical Approach --
Masao Ishihama (Kanagawa Institute of Technology)
The Fourth TRIZ Symposium in Japan, Held by Japan TRIZ Society on Sept. 10-12, 2008 at Laforet Biwako, Moriyama, Shiga, Japan
Introduction by Toru Nakagawa (Osaka Gakuin Univ.), Oct. 26, 2008
[Posted on Dec. 30, 2009] 

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Editor's Note (Toru Nakagawa, Dec. 25, 2009)

This paper was presented at the Fourth TRIZ Symposium in Japan, 2008 , which was held on Sept. 10-12, 2008 by 'Japan TRIZ Society, NPO'. 

Japan TRIZ Society has posted the presentation files (in Japanese) of all the Contributed Presentations in the 'Members-Only' area of its Official Web site (http://www.triz-japan.org/ ) in PDF on July 1, 2009.  Files in English are going to be posted in a similar way.

The present site, "TRIZ Home Page in Japan", on the other hand, is going to post several selected Contributed Presentations publicly, under the desire & permisson by the Authors.  Presentation slides of them will be posted in PDF, with the policy of updating prohibited, copying and printing permitted.

Meanwhile the Author submitted the full paper of the present work to an international academic journal and it has been accepted for publication as follows:

"Noise and vibration design by the TRIZ method" by Masao Ishihama
to be published in "International Journal of Vehicle Noise and Vibration (IJVNV)" (Inderscience Enterprises Ltd., 2010)

This is the reason why several slides quoted in my 'Personal Report of Japan TRIZ Symposium 2008' were supressed initially (on Oct. 26, 2008) and finally were shown recently (Dec. 25, 2009). 

This page has the following contents in English and in Japanese:

Item English page Japanese page
Abstract of the paper  (HTML) Abstract Abstract
Presentation slides (PDF) (21 slides, 335 KB) (21 slides   400 KB)
Introduction by Nakagawa: An excerpt from "Personal Report of Japan TRIZ Symposium 2008"  (HTML) Introduction by Nakagawa  -

 


[1] Abstact

Application of TRIZ to Noise and Vibration Problem Solving
- Fusion with Traditional Theoretical and Empirical Approach -

Masao Ishihama (Kanagawa Institute of Technology)

Abstract

Conventional textbooks on noise and vibration (NV) control almost always describe analysis methods only and don’t provide methods of solving problems. On the other hand, handbooks contain solutions of “specific” problems, but they don’t necessary give readers solutions to general problems. In this study, the author tries to connect NV theory with TRIZ idea of solving problems for giving engineers rules of thumb of NV technology. This method converts specific concrete problems into abstract general problems by sorting symptoms by frequency, time dependency, etc. Then these general problems are placed in suitable categories classified by equation of motion in NV theory. Then rules of thumb described with problem solving manner is given.


[2]  Presentation Slides in PDF

Presentation Slides in English in PDF (21 slides, 335 KB)

Presentation Slides in Japanese in PDF (21 slides, 400  KB)

 


[3]  Introduction to the Presentation (by Nakagawa)

Excerpt from: 
Personal Report of The Fourth TRIZ Symposium in Japan, 2008
by Toru Nakagawa (Osaka Gakuin University), Oct. 26, 2008
Posted on Oct. 26, 2008 in "TRIZ Home Page in Japan"

 

Masao Ishihama (Kanagawa Institute of Technology) [O-17 #24] gave an oral presentation with the title of "Application of TRIZ to Noise and Vibration Problem Solving -- Fusion with Traditional Theoretical and Empirical Approach --".  First I will quote his abstract:

Conventional textbooks on noise and vibration (NV) control almost always describe analysis methods only and don’t provide methods of solving problems. On the other hand, handbooks contain solutions of “specific” problems, but they don’t necessary give readers solutions to general problems. In this study, the author tries to connect NV theory with TRIZ idea of solving problems for giving engineers rules of thumb of NV technology. This method converts specific concrete problems into abstract general problems by sorting symptoms by frequency, time dependency, etc. Then these general problems are placed in suitable categories classified by equation of motion in NV theory. Then rules of thumb described with problem solving manner is given.

The Author shows his generalizing approach in the following slides, first from the traditional viewpoints:

 

Then he is trying to apply TRIZ in this field of technology.  The below-left slide shows the approach of using the Contradiction Matrix; but he has found the approach insufficient.  The Author's new approach in the present study is summarized in the below-right slide; this approach follows the standard Four-Box Scheme of solving problems by use of general, abstract theory. 

   

In the present approach the Author categorizes the problems first by using Noise & Vibration (NV) symptoms.  Then he represents the problem in a generalized way by using the Transmission Function.    [Note (Oct. 20, 2008 TN): Quotation of 2 slides is temporarily suppressed on Author's request.] [Note (Dec. 25, 2009): On Author's permission, the 2 slides are shown here.]

 

By reviewing various known solutions in this field, the Author has classified the general solutions as shown in the following slides.  General solutions in each category are demonstrated with a number of examples.  Some of such solutions and examples are illustrated in the subsequent slides.  [Note (Oct. 20, 2008 TN): Quotation of 5 slides is temporarily suppressed on Author's request.] [Note (Dec. 25, 2009): On Author's permission, the 5 slides are shown here.]

   

  

The conclusions by the Author is summarized in the slide shown right.

*** I am not so familiar in this field of technology, but I feel this presentation is a fine example of systematizing a field of technology, where the problems have been handled rather empirically.   The general solutions are now expressed in the terms of specific field, but they may be easily linked to the TRIZ terms, such as 40 Inventive Principles and Trends of System Evolution.  It is interesting to study whether TRIZ Inventive Principles enhance the system of generalized solutions and stimulate more ideas to the engineers in this field.

Top of this page Abstract Slides in PDF Nakagawa's Introduction Japan TRIZ Symp. 2008 Nakagawa's Personal Report of Japan TRIZ Symp. 2008 Japanese page

 

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Last updated on Dec. 25, 2009.     Access point:  Editor: nakagawa@ogu.ac.jp