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Is Prototyping Design Output or Design Verification?
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Is Prototyping Design Output or Design Verification?
Is Prototyping Design Output or Design Verification?
Is Prototyping Design Output or Design Verification?
Is Prototyping Design Output or Design Verification?
Is Prototyping Design Output or Design Verification?
Is Prototyping Design Output or Design Verification?
Is Prototyping Design Output or Design Verification?
Is Prototyping Design Output or Design Verification?
Is Prototyping Design Output or Design Verification?
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  Post Number #1  
Old 30th March 2008, 10:01 PM
dyeysi

 
 
Total Posts: 18
Question Is Prototyping Design Output or Design Verification?

Hi Covers!

I'd like to know your opinion about this..
Is prototyping a design output or design verification?
I understand that during the design output, R&D engrs do mechanical drawings, schematic diagrams, electrical diagrams, BOMs to meet the input requirements. Design verification checks if the output meets the input requirements. Where does protoyping included?

I am a little confused right now..
Please enlighten me..
thanks

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  Post Number #2  
Old 30th March 2008, 10:11 PM
AndyN's Avatar
AndyN

 
 
Total Posts: 8,924
Let Me Help You Re: Is prototyping design output or design verification?

In my experience a prototype is built and tested as a design verification activity. Once the test results were reviewed, then the next phase of design can be entered.
Thank You to AndyN for your informative Post and/or Attachment!
  Post Number #3  
Old 30th March 2008, 10:34 PM
Jim Wynne's Avatar
Jim Wynne

 
 
Total Posts: 14,197
Re: Is prototyping design output or design verification?

Quote:
In Reply to Parent Post by AndyN View Post

In my experience a prototype is built and tested as a design verification activity. Once the test results were reviewed, then the next phase of design can be entered.
Yes, and design output generally consists of specifications and requirements.
  Post Number #4  
Old 31st March 2008, 01:31 AM
markl368

 
 
Total Posts: 25
Re: Is prototyping design output or design verification?

Some of the definitions depend on the industry you're working in. For example, the FDA states the following in its small entity compliance guide:

"Design input includes determining customer needs, expectations and requirements plus determining regulatory, standards, and other appropriate requirements. These various requirements are documented by the manufacturer in a set of device requirements. A set of design input requirements, when converted to engineering terminology, finalized and accepted as part of the device master record is called a device or product specification."

The FDA lists a separate procedural requirement under "Design Transfer" for final specification development. So basically, FDA considers product specs (at least the initial ones) to be design inputs. But I know that's not how everyone defines it.

The whole process is a continuum. The key thing regardless of the industry is to: 1) Plan design activities, 2) Determine the requirements, 3) Execute the initial design, 4)Test the design to see if it met requirements, 5) Change the design if you have to until you can confirm you met the requirements, 6)Document the process, specs and changes, and 7) Get the customer to confirm it's what they wanted.

If you do these things, you should meet requirements for controlling designs regardless of what you want to call the different steps.
Thank You to markl368 for your informative Post and/or Attachment!
  Post Number #5  
Old 31st March 2008, 01:52 AM
harry

 
 
Total Posts: 6,291
Re: Is prototyping design output or design verification?

Quote:
In Reply to Parent Post by markl368 View Post

....................... The whole process is a continuum. The key thing regardless of the industry is to: 1) Plan design activities, 2) Determine the requirements, 3) Execute the initial design, 4)Test the design to see if it met requirements, 5) Change the design if you have to until you can confirm you met the requirements, 6)Document the process, specs and changes, and 7) Get the customer to confirm it's what they wanted.

If you do these things, you should meet requirements for controlling designs regardless of what you want to call the different steps.
Good post and advice from Mark. Prototype is certainly verification if used to confirm design assumptions especially for those designs that are new and unconventional but again depending on what you are designing, it could be both verification and validation if used to check designs, buildability and aesthetics.
  Post Number #6  
Old 31st March 2008, 02:08 AM
dyeysi

 
 
Total Posts: 18
Re: Is prototyping design output or design verification?

Thank you all for enlightening me..
  Post Number #7  
Old 31st March 2008, 12:17 PM
Paul Simpson's Avatar
Paul Simpson

 
 
Total Posts: 1,834
It depends!

How do you describe your design process?
  1. The initial BOM is an output of the design process
  2. The activity of building a prototype verifies the BOM and intial build spec
  3. The built prototype is an output of the initial build verification
  4. The built protype is then maybe verified against a test specification
  5. The tested prototype is an output of the test programme
  6. You get the idea ....
Thank You to Paul Simpson for your informative Post and/or Attachment!
  Post Number #8  
Old 31st March 2008, 02:55 PM
yodon

 
 
Total Posts: 1,114
Re: Is prototyping design output or design verification?

I would agree with all the above posts *IF* you intend to collect data using the prototype. If it's just going to be used in marketing shows, then no need to jump through unnecessary hoops. If you are going to use it to, say, verify some aspects of the design, then by all means, design controls should be met.

And I would consider it a design output - something that can be used in design verification.
Thanks to yodon for your informative Post and/or Attachment!
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