The Essence of the Inverted Risk
Countermeasure Method “AFD" in I-TRIZ- How about Becoming a Saboteur? Teruyuki Kamimura
Certified I-TRIZ SpecialistIdeation Japan Inc.
Ideation International Inc.
© 2013 Ideation Japan1

1. SELF INTRODUCTION

Introduction of Ideation Japan Inc.
 United States Ideation International Inc.
 Willfort international patent firm
It cooperates, and customer's technological innovation is supported from the threeside of developing, intellectual property, and making to the business.
 Establishment in May, 2010
 Japanese representative partner of TRIZ consuting company "Ideation Internationaland Inc." of the United States (III Co.)

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The entire image of I-TRIZ"Office of Innovation"
Office of Innovation
創造的問題解決

Inventive Problem
Solving
Systematic
process to solve
difficult, technicalproblem of related
to performance
improvement,functionality
expansion, quality
improvement, andcost decrease, etc.
of product andtechnology

先行的不具合対応

Anticipatory Failure Determination

戦略的世代進化

不具合予測

Failure Analysis

Failure Prediction

Directed Evolution

Systematic
process toascertain primarycause foroccurring trouble,
breakdown, andfailure and tosolve it promptly

Systematic process
to prevent potential
trouble, breakdown,
and failure that willoccur in the futureforecasting
beforehand

Systematic process toevolve generation inthe future of systemfrom a strategic
standpoint

不具合解析(C) 2013観念構成日本株式会社

知的財産制御Control ofIntellectual Property
Systematicprocess toenhance value ofliterary property
and to improve
deterrent andoffensive power
to violation andevasion4

2. WHAT IS ANTICIPATRY FAILURE
DETEMINATION(AFD)?

Two kinds of processes of AFD
Trouble analysis FA (Failure Analysis)
The primary cause for the occurring trouble is clarified and removed.

Cause?

Trouble

Trouble forecast FP (Failure Prediction)
The trouble that can occur in the future is forecast and prevented.

System© 2013 Ideation JapanTrouble?

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Past investigation into the cause method and what aredifferent as for AFD FA?
 Past trouble investigation into the cause method
Information on similar past trouble is clarified and the cause isclarified to reliance.
 When the breakdown similar to past occurs repeatedly, it iseffective.
 However, the clarification of the following trouble is difficult.
 The first trouble without experience in the past.
(There must be "First time" also in what. ) It is doesn't remain the information or insufficient trouble
though it might have been in the past.
(Trouble information is mostly buried to the dark. ) FA of AFD:

To be interpretable of the cause mechanism even if it is the first
trouble not experienced, it is made.
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Past forecast method and what are different as for AFDFP?
 Past trouble forecast method: FMEA, HAZOP
It thinks what occurs when each element under the designchanges based on the design of the object system.
 Trouble cannot be forecast according to the factor of "Outsideassumption" not intended by the design.
 It takes a great amount of time for the analysis.
There are a lot of components of the system, and the variationof the change in the element and the combination are nearinfinity.

FP of AFD
 To be predictable of the breakdown by a cause
outside assumption, it is made.
 It is made to be predictable in a more short time.
83. THE MAXIMUM FEATURE OF AFD:
SABOTAGE ANALYSIS

Thinking as a saboteur Advantage of AFD:
①The cause of the first trouble is clarified.
②Trouble outside assumption is predictable.
 The secret is an approach method "Sabotage analysis".
 It is not a side where the system is defended.
It stands in the standpoint of "Saboteur" that attacks thesystem.
 ｢Will how do it do and will I cause trouble? Will I destroy
it?｣It thinks. "Trouble is invented. "© 2013 Ideation Japan10

Effect of "Sabotage analysis"
1.

The defect of the design is seen well by becoming a cracker.
 As for painful trouble, the criminal is hiding by him/herself in the place
where the designer did not intend it at all.
 Because the hiding place is not seen, it becomes outside an uncertain cause
or assumption so far.
 The idea extends it to the place in which it did not see it by thinking thattrouble is caused from the cracker side in the designer. The criminal who hid
by him/herself is found.

2.

Abundant knowledge and tools to invent it can be used.
 Abundant techniques of IPS (invented problem solving) that is a systematic
process to invent it can be used.
 Trouble is a neutral originally natural phenomenon. It is often used for a
useful purpose in another field. A variety of generation methods of trouble
are found if searching for the technical intelligence of a profitable purpose.
As a result, the accuracy rate and the speed of investigation into the cause andthe fault prediction improve.

3.

© 2013 Ideation Japan11

Basic technique of AFD: Three steps solution
FA and FP are basic threestep solution.

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Step 3Resource verification
3© 2013 Ideation Japan

Step 2
Trouble hypothesis

TroubleGeneratingmechanism
12Step 1: Invert the problem
The problem "Why does trouble occur?" is converted to theproblem "How can I cause the same, naturalphenomenon?".

If you do very
Can you do so?

It became it so why.
[Darou] ?

© 2013 Ideation Japan13

Step 2: Set up a hypothesis for the trouble
It begins to devise the method of causing trouble.
①The method of causing the same natural phenomenon as trouble is invented (IPS).
②The natural phenomenon is pulled and an already-known excessive scientificmethod is dug up.
③The method where it generates it by a profitable purpose is retrieved.

There is abundantly
information.

Process ofmanufacture© 2013 Ideation Japan14

Step 3: Verify resources
Which of two or more hypotheses a true cause is specified.
①Fulfillment of resource②Verification of peculiar event③Proving test
Hypothesis 2
What can I do so?

Hypothesis 1

Element C© 2013 Ideation Japan

Element B

Element A

Why did it become it so?

Resource
A
Resource
B
Resource
CCandidate ofcause
154. CASE INTRODUCTION

Rocks crumble from the ceiling of the tunnel
in the mine

700 m

Ventilation adit

OreTunnel

 The rock drops in aspecific, two ormore zones. It
doesn't occur at allin other zones.
 New surface 15 20-%

 Oxidizedsurface

Step 1: Problem inversion
How is the stone dropped?
T1

T2

T3

T4

T5

Step 2: Trouble hypothesis
The crack is developed and it is oxidized.

Inversion of the new problem
How is the crack developed?

Crack
Air enters and thecrack opens.

Oscillatory wave

Air goes out andthe crack shuts.

Step 2: Trouble hypothesis
The opening and shutting of the crack (breath) is
repeated by the aerial vibration.

Step 1: Inversion of the new problem
How is the crack developed?
Ventilation aditAirinsertion

Air [da]Step 2: Trouble hypothesis
A huge whistle generates
the supersonic wave.

Air style

Step 1: Inversion of the new problem
How is the vibration caused in a specific zone?
Step 2: Trouble hypothesis The round trip of the supersonic wave forms
the standing wave.

Airinsertion

Air [da]Generation part ofsupersonic wave

Solution of trouble
I

Removal of supersonic wave whistle
The corner in the tunnel
that corresponds to theshifting plank of thewhistle is shaved off.