Determining Sample Size and Frequency for Features on Control Plans

  • Thread starter George Trybulski
  • Start date
G

George Trybulski

#1
#1
When developing control plans, is there a "standard" way to come up with a sample size for a peticular feature. I don't agree to base it on quantity of the order but should it be on the critical nature of the dimension ?
 
GAGEpack - Gage & Calibration Management
Elsmar Forum Sponsor
Marc

Marc

Fully vaccinated are you?
Leader
#2
#2
I don't know of a 'standard'. It depends upon the type of process, how critical the dimension is, how stable the process is and what you are trying to do in general.

Are you thinking SPC here?
 
B

BILLYLEU

#4
#4
Originally posted by chen:
don't forget to consider the output RPN of FMEA.
Click to expand...
I am a rookie in the the field of quality control field. Could somebody help to the defination of DOE ,QFD , RPN ,ASO and AIAG?
 
Marc

Marc

Fully vaccinated are you?
Leader
#5
#5
DOE = Design of Experiments

QFD = Quality Function Deployment

RPN = The number obtained in an FMEA when you multiply the 3 factors of that FMEA type. I think the acyronym is something like Resultant Priority Number

ASO = I have no idea

AIAG = Auto Industry Action Group
 
Marc

Marc

Fully vaccinated are you?
Leader
#7
#7
George Trybulski said:
When developing control plans, is there a "standard" way to come up with a sample size for a particular feature. I don't agree to base it on quantity of the order but should it be on the critical nature of the dimension ?
Click to expand...
This is an old thread which "bubbled up". Would anyone care to comment on the starting post since it was never adequately answered?
 
S

ssz102

#8
#8
according with my experience, the size of sampling depends the type of product your production or how does the product are manufacturing?
generally speaking, sampling 3---5pcs for cosmetic, and approximate 5pcs for measurement studies, and about 1--2pcs as function or performance analysis
 
R

ranvir.jaryal

#9
#9
1. Based on the criticality of a particular dimension, there will be an AQL (Normally customer driven).
2. Then taking into consideration, your process capability, appropriate sampling plan should be reviewed and implemented.
3. During initial stages of new product, sampling should be done tightly.
4. Thereafter at regular intervals, based on the data available, sampling frequency should be reviewed and updated.
5. DO not forget to update frequency in Control Plan also.

This approach will also help keeping Control Plan a live document.

For sampling plan please refer to MIL-STD 105E
 
Last edited by a moderator:
You must log in or register to reply here.
Thread starter Similar threads Forum Replies Date
S Determining Sample Size and Method Quality Tools, Improvement and Analysis 12
B Determining sample size for device sterility Inspection, Prints (Drawings), Testing, Sampling and Related Topics 3
D Determining of sample size for 'Operational Qualification' AQL - Acceptable Quality Level 5
R Determining Sample Size for Medical Device Component Validation Inspection, Prints (Drawings), Testing, Sampling and Related Topics 0
S Surveillance Sampling Test - Determining Sample Size Inspection, Prints (Drawings), Testing, Sampling and Related Topics 5
S Determining sample size for inspection to achieve x% confidence re defects Misc. Quality Assurance and Business Systems Related Topics 10
S Determining Sample Size - AQL & LQ AQL - Acceptable Quality Level 10
B Bayes Success-Run on Attribute Data - Determining Sample Size Statistical Analysis Tools, Techniques and SPC 2
A Determining Sample Size in Design V&V activities 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 44
G Determining Sample Size for Equipment Qualification Studies Qualification and Validation (including 21 CFR Part 11) 10
D Determining Sample Size for Capability in Six Sigma Project Six Sigma 5
H Determining the Correct Sample Size when AQL points to two Sample Sizes AQL - Acceptable Quality Level 7
L Determining Cpk based on a given Sample Size, Confidence Level, & Reliability Inspection, Prints (Drawings), Testing, Sampling and Related Topics 2
M Determining Sample Size needed for Operational Qualification (OQ) Inspection, Prints (Drawings), Testing, Sampling and Related Topics 24
T Determining the appropriate Sample Size using an AQL Table Inspection, Prints (Drawings), Testing, Sampling and Related Topics 31
J Functional Test Sampling - Determining Sample Size to eliminate 100% Testing Inspection, Prints (Drawings), Testing, Sampling and Related Topics 2
W Sampling Plan problem - Determining Sample Size for both Attribute and Variables Data ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 2
S Determining the Total Sample Size using AQL - AQL Lot Quantity question AQL - Acceptable Quality Level 8
1 Determining AQL and Sample Plan - Batch size is from 1-500 AQL - Acceptable Quality Level 24
E Determining Sample Size for Design Verification and Design Validation Other Medical Device and Orthopedic Related Topics 20
N Auditing Proof of Delivery signed by the customer - Determining Sample Size General Auditing Discussions 6
P Determining Sample Size - Filling a bag with three different types of candy Inspection, Prints (Drawings), Testing, Sampling and Related Topics 31
Q Determining Sample Size for FDA Verification and Validation Activities Inspection, Prints (Drawings), Testing, Sampling and Related Topics 45
D Determining sample size required based on a 95% confidence level Reliability Analysis - Predictions, Testing and Standards 7
B Determining sample size for drop test and waterproof testing Inspection, Prints (Drawings), Testing, Sampling and Related Topics 6
T Determining Receiving Inspection Sample Size Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
N Determining Sample Size for Attribute Data Inspection, Prints (Drawings), Testing, Sampling and Related Topics 3
C Internal Audit Sampling Plans - Determining Internal Audit Sample Size Internal Auditing 45
Q Determining the Appropriate Sample Size for Process Validation/Qualification Inspection, Prints (Drawings), Testing, Sampling and Related Topics 13
T Using Cpk for the purpose of determining sample size/frequencies Capability, Accuracy and Stability - Processes, Machines, etc. 2
U Determining population defect rate from sample defect rate Inspection, Prints (Drawings), Testing, Sampling and Related Topics 4
S Determining sample sizes for PQ Qualification and Validation (including 21 CFR Part 11) 4
R Determining Sample Sizes for Testing (Chemistry or Microbiology) Inspection, Prints (Drawings), Testing, Sampling and Related Topics 6
B Selecting a Sample and Determining the Reference Value for a Bias Study Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 2
Dazzur Difficulty in determining who should be addressing NCRs Nonconformance and Corrective Action 9
L Determining effectiveness and efficiency Process Maps, Process Mapping and Turtle Diagrams 6
C Determining an as received OOT condition during calibration does not affect measurements taken prior to calibration. General Measurement Device and Calibration Topics 16
C Need help in determining applicable clause for an audit finding (based on AS9120B) ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 4
Q Kap.4.3 Determining the scope ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 10
T Determining FIPS 140-2 compliance in a medical device Medical Information Technology, Medical Software and Health Informatics 2
W Strategy for determining which components from a system should be "ME EQUIPMENT" -- home healthcare environment IEC 60601 - Medical Electrical Equipment Safety Standards Series 6
J Process Capability - Determining the process capability of certain equipment Lean in Manufacturing and Service Industries 6
S Determining a device category according to the MDR EU Medical Device Regulations 3
S Determining the requirements for the products and services ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 3
Q Determining Adverse Effects of Corrective/Preventive Actions ISO 13485:2016 - Medical Device Quality Management Systems 2
M Determining if an Insulin Pen Testing Machine is a Medical Device? EU Medical Device Regulations 4
M Determining a tolerance value for Measuring devices in-house inspection General Measurement Device and Calibration Topics 12
D Determining the the maximum number of reprocessing cycles of attachments CE Marking (Conformité Européene) / CB Scheme 2
R Determining Uncertainty from Gage R&R Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 1
A IATF 16949 4.3.1 - Determining the scope of the quality management system - supplemental IATF 16949 - Automotive Quality Systems Standard 9

Similar threads

Top Bottom