# How to evaluate or measure the complexity of product?

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#### karahashi201

Hello all,

Please give me some ideas on how to evaluate or measure the complexity of product. I have been told to work out a standard complexity rate to weight different products (consumer electronic product in an assembly plant).

Below are what I found from the web.
1. Cycle time: complexity in assembly is measured by the difference between theoretical minimum operation times and projected actual operation times.
2. Number of components: for an assembled product, one possible indicator of product complexity is its number of components - the more parts, the more complex the product is.
3. Manufacturing and/or assembly process: for a manufactured component, a possible measure of part complexity is the number of processing steps required to produce it.

I'd like to know if there is another way to measure the product complexity. If yes, what is it? Is there any formula can be used? Any example can be provided? Please advise. Thanks a lot!

Last edited by a moderator:

#### Coury Ferguson

##### Moderator here to help
Trusted Information Resource
Covers, any ideas here?

#### bobdoering

Trusted Information Resource
One factor I look at is the number of characteristics. If I have a part with 20 dimensions, I consider it less complex than one with 125. You might even want to weight the characteristics themselves - a true position RFS may be more complex than a diameter. The number of "critical" characteristics can also give on a sense of complexity - if not in the part, certainly in its control.

#### Miner

##### Forum Moderator

I'd like to know if there is another way to measure the product complexity. If yes, what is it? Is there any formula can be used? Any example can be provided? Please advise.
See Boothroyd Dewhurst for Design for Manufacturability/Assembly. I remember that they had some type of index that showed the difficulty of manufacturability.

#### Stijloor

Super Moderator
Hello all,

Please give me some ideas on how to evaluate or measure the complexity of product. I have been told to work out a standard complexity rate to weight different products (consumer electronic product in an assembly plant).

Below are what I found from the web.
1. Cycle time: complexity in assembly is measured by the difference between theoretical minimum operation times and projected actual operation times.
2. Number of components: for an assembled product, one possible indicator of product complexity is its number of components - the more parts, the more complex the product is.
3. Manufacturing and/or assembly process: for a manufactured component, a possible measure of part complexity is the number of processing steps required to produce it.

I'd like to know if there is another way to measure the product complexity. If yes, what is it? Is there any formula can be used? Any example can be provided? Please advise. Thanks a lot!

Look at the Product Development Forum.

NOTE: I am not associated with the sponsoring organizations.

Stijloor.

Y

#### yangqing_369

Hello all,

Please give me some ideas on how to evaluate or measure the complexity of product. I have been told to work out a standard complexity rate to weight different products (consumer electronic product in an assembly plant).

Below are what I found from the web.
1. Cycle time: complexity in assembly is measured by the difference between theoretical minimum operation times and projected actual operation times.
2. Number of components: for an assembled product, one possible indicator of product complexity is its number of components - the more parts, the more complex the product is.
3. Manufacturing and/or assembly process: for a manufactured component, a possible measure of part complexity is the number of processing steps required to produce it.

I'd like to know if there is another way to measure the product complexity. If yes, what is it? Is there any formula can be used? Any example can be provided? Please advise. Thanks a lot!

may i try to understand your meaning with that post?
you want to know the cycle time that production processes has?
1. if you know the production well, you can evaluate it with experience.
2. if not, you must know every assembly process, and know how to operate or make.
note: if something is hard to measure with date.
then rely on experience.
i don't know if you will understand.

Last edited by a moderator:

#### Ajit Basrur

May be I am new to this concept but would like to know why do you measure "Product Complexity" ? What is this study used for ?

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#### xuanyuanjian

simplify the complexity products,then you will do it well.

#### Steve Prevette

##### Deming Disciple
Super Moderator
A few thoughts on other measures (geared towards electronics assembly):

Number of solder joints - machine vs. hand made also
Number of test points/readings required to test the product
Number of failure modes in the reliability analysis / FMEA
Qualifications / special training hours needed for the person to assemble the product