quantifying innovation

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Quantifying Innovation

r. ar s ran



“Innovation encompasses technological innovation, a fresh way of management or a different

” , ….

Pratibha Patil, President of India.

Performing better r. a ara i

A farmer in Assam, developed more than85 engineering devices for differentpurposes in agriculture. Out of thesethirteen are commercialized.



er orm ng e er p m za on Three basic ingredients:

Objective function

Unknowns or variables Maximize Constraints. ( ) ( )11),(

22

2

2

2

121 −+−= x x x x f Minimize

0;0 ;52 21212

211

>>≤−≡

−−

x x x xg

Cost

S ace/Size

ResourcesCom atibilit



7000Effect of speed on load

Objective function -- Load

-- Ob ective function -- Load500

600

700

4000

5000

6000

L o a d

Variable -- Clearance

a d 200

300

400

L o a d

L o a d

0

1000

2000 L

1 2 3 4 5 6 7 8 9 10

0

100

0.001 R * FactorClearancespeed = 1000 * FactorSpeed

2500

2750Load capacity versus eccentricity ratio

Monotonic O.F.

1250

1500

1750

2000

2250

L o a d ,

N

ec ve unc on -- oa

Variable -- Ecc. ratio Max. Load = f( ε , C r , N)

o a d

250

500

750

1000.

× Experimental Eq.

L

.5 .55 .6 .65 .7 .75 .8 .85 .9 .950

Eccentricity ratio Primary & Secondary EquationsEcc. Ratio



Optimization/Innovation?

Bridge

Base-plate



A com an X, decided to desi n air-circulators for aint sho s. Len th

of 2-m and diameter of 0.6-m was designed for rotor of air-circulator.Company X wanted to design suitable bearings to reduce the powerconsumption on 2/3.

On studying the air-circulator it was found that rotor length could be- . - - .

length of rotor itself fulfilled the requirements.



Vacuum Cleaners

WoodenSteel

Cleaner & year Dominant material PowerW

Weightk

Cost*

Hand powered,

1905

Wood, canvas,

leather ,Mild steel

50 10 $ 380

Motor driven, 1950 Mild Steel 300 6 $150

C lindrical sha e Moulded ABS 800 4 $ 95

1985 polypropyleneCosts have been adjusted in 1998 values, allowing for inflation [Ref. M. Ashby]



How to measure material-life in a corrosive medium?



-



Washing soap

Washing soda

- se so um o-car ona e



??? Skeet shooting Moving target practice

- cow- ung p geon



Innovation

.

Department of Mechanical EngineeringINDIAN INSTITUTE OF TECHNOLOGY DELHI

hirani@mech,iitd.ac.in, [email protected]

Innovation: finding a fresh/different way of doing the same

task which would result in better er ormance



Need of Innovation ??

Innovation universities



four descriptors



Rotor Spinning Machines: A case studyhttp://www.triz-journal.com/archives/2000/07/d/index.htm



Rotor Spinning Machines: A case study http://www.triz-

journal.com/archives/2000/07/d/index.htm



Use “benefit to cost ratio (BCR)”. Larger the BCR, better is the.

Unfortunately, BCR cannot be defined for a number of social andenvironment related issues such as ollution health roblems etc.

Ideality index quantify the innovation.

∑=

FunctionsUseful

+ costFunctionsHarmful

=0 worst product =∞ best roduct

Improving ideality Prime objective of the innovators.



FunctionsUseful

∑ ∑+= costFunctionsHarmfulIdeality

A 230, 10, 100 A(8, 5, 5) 8.08I ==B(230, 20, 140)C(80, 10, 100))

B(8, 10, 7)C(3, 5, 5))

47.08

I

55

==

+

EP (80, 20, 140) EP (3, 10, 7)3.0

3I

710==

+

18.03

I

55

==

+

+



Desi n of En ine Valves

Ex: In 4-stroke en ines, valve timin sand lift are optimized for one set of

operating conditions.

Intake, energy and exhaustneed to be balanced.

Ideal case Instantopening/closure

ver ap



Tribo-Pairs:• Cam-pushrod

• pushrod-rocker arm

• rocker arm-rockershaft

• rocker arm-valve

• valve-valve-guide• valve-seat

• push rod – guide

ZY

X indexIdeality

Z Z +++=

Cost Friction Noise Inertia



Emphasizes on reducing harmful functions

an cost.

Eliminate rocker arm & push rod…25%re uc on n cos . re uc on n rec

mechanical contact.

Y0.75)(0.6X indexIdeality

321 +++=

Z Z Z

XY0.75)(6.0Z0.4

n exea ty312 +++

= Z Z

===

43.0;39.0;25.0Iexisting

, ,

=== II I I I



Hollow valves

Y0.754.0Z0.4

X indexIdeality

+++

= Z Z

51.0;43.0;39.0;25.0Iexisting ==== III II I I I I



T ank U or !!!

quantifying innovation

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