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Can a Attribute Study be considered a Visual Inspection?
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Can a Attribute Study be considered a Visual Inspection?
Can a Attribute Study be considered a Visual Inspection?
Can a Attribute Study be considered a Visual Inspection?
Can a Attribute Study be considered a Visual Inspection?
Can a Attribute Study be considered a Visual Inspection?
Can a Attribute Study be considered a Visual Inspection?
Can a Attribute Study be considered a Visual Inspection?
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Can a Attribute Study be considered a Visual Inspection?


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Some Related Topic Tags
attribute data, gage r&r (repeatability and reproducibility), inspection (general), visual inspection
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  Post Number #1  
Old 21st November 2017, 09:50 AM
RookieQuality

 
 
Total Posts: 2
Question Can a Attribute Study be considered a Visual Inspection?

My co-worker decided to update our Gauge R&R procedure to include visual inspection criteria. "All visual inspection is classified as attribute gaging. To comply with this method, employees shall be required to pass a visual inspection quiz to ensure they are qualified to make pass/fail judgments. "

Is a visual inspection quiz considered an attribute study, if the quiz only contains 10 or so questions?

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  Post Number #2  
Old 21st November 2017, 02:18 PM
Bev D's Avatar
Bev D

 
 
Total Posts: 3,575
Re: Can a Attribute Study be considered a Visual Inspection?

Well ‘study’ covers many situations...in this case your Customer requirements - if any - might matter, if they specify certain study designs,

A typical ‘attribute’ study would involve many parts that were good, bad and several at the ‘cutoff’ limit to truly challenge the inspector’s ability to discriminate between marginal parts. The inspection may also be performed at the expected speed during normal inspections. The study is also performed twice with the run order of parts randomized between the two tests.

10 seems really small and inadequate for a study that is truly insightful.

A bit of clarification may help: what are the ‘questions’?
  Post Number #3  
Old 27th November 2017, 12:34 PM
RookieQuality

 
 
Total Posts: 2
Re: Can a Attribute Study be considered a Visual Inspection?

The questions are multiple choice. The questions consist of a picture of a noticeable defect and the operator has to choose the correct answer "defect description". I've informed my co-workers that these "quizzes" are competency test, not attribute studies. My goal is to remove the quizzes from our procedure. I don't think these quizzes meet an attribute criteria?
  Post Number #4  
Old 27th November 2017, 02:34 PM
Bev D's Avatar
Bev D

 
 
Total Posts: 3,575
Re: Can a Attribute Study be considered a Visual Inspection?

ah OK.

you are correct that 'quizzes' do not meet the intent of an 'attribute gage' measurement system study. (or attribute gage R&R).

not sure that they are useless tho. quizzes are like calibration. they can be a good first screen...


Repeated readings of many good, marginal and bad pieces is a measurement repeatability and reproducibility study....
  Post Number #5  
Old 27th November 2017, 04:38 PM
optomist1's Avatar
optomist1

 
 
Total Posts: 371
Re: Can a Attribute Study be considered a Visual Inspection?

shouldn't the question be re-phrased; "can a visual inspection be construed to be or fulfill the requirements of an Attribute Study/Survey"?
Thanks to optomist1 for your informative Post and/or Attachment!
  Post Number #6  
Old 28th November 2017, 02:39 AM
AMIT BALLAL's Avatar
AMIT BALLAL

 
 
Total Posts: 130
Look! Re: Can a Attribute Study be considered a Visual Inspection?

The questionnaire can be used to test knowledge, but cannot be considered as an attribute MSA study. You can do a Kappa study.
  Post Number #7  
Old 28th November 2017, 07:05 AM
Bev D's Avatar
Bev D

 
 
Total Posts: 3,575
Re: Can a Attribute Study be considered a Visual Inspection?

Quote:
In Reply to Parent Post by optomist1 View Post

shouldn't the question be re-phrased; "can a visual inspection be construed to be or fulfill the requirements of an Attribute Study/Survey"?
The OP correctly phrased their question given his original and subsequent explanation of his situation. He/she could have more completely stated their question by reiterating that they were asking about the suitability of a quiz as a “Attribute Gage R&R Study for visual inspection”.

Your statement is off a bit. Visual inspection is a form of “Attribute gaging” and a attribute gage R&R (or attribute measurement system study) is used to determine the repeatability and reproducibility of the visual inspection process...in order to execute these studies the inspector does visually inspect good, marginal and bad parts at least twice.
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