Signal Detection-If Ppk>1, compare measurement system to process.

D

dalezhou

Registered
HI All,
The 4th MSA Manual (P.143) says if Ppk>1, compare measurement system to process.

now i understand if Ppk>1, then %GRR=d/5.15σ;

If understand this word correctly or not? pleas guide me how to understand the "process" here.
:thanx:
 
Bev D

Bev D

Heretical Statistician
Leader
Super Moderator
I am not an expert on AIAG, but I assume that 'the process' means that you would compare the measurement error to the acttual variation of the process (study variation or historically observed variation). if you know that the Ppk value is greater than 1 then you know the process variation is less than the tolerance and the measurement study turns from focusing on the measurement system's ability to distinguish between 'in-tolerance' and 'out-of-tolerance' parts to the system's ability to detect changes (such as with SPC)...

If any AIAG experts out there can correct my interpretation or add insight it would be appreciated!
 
You must log in or register to reply here.
Thread starter Similar threads Forum Replies Date
E MSA of Attribute Gauges Signal Detection Method Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 5
Rameshwar25 Signal Detection Method Zone Classification Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 5
E How the values are derived for the AIAG Signal Detection Method Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 1
S Logic behind signal detection in attribute GRR% calculation Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 2
T MSA Manual revision 3 Attribute Data - Signal Detection Formula Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 9
M IEC 60601-1-8 clause 6.4.1 (statistics of the distribution of the sum of the maximum ALARM CONDITION + SIGNAL GENERATION DELAY) IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
P Missing 1m visual alarm signal in case of software/display failure, mitigation? ISO 14971 - Medical Device Risk Management 3
shimonv IEC 60601-1 Essential Performance - Is the signal accuracy specification an essential requirement? IEC 60601 - Medical Electrical Equipment Safety Standards Series 4
V Colour of indication for ALARM SIGNAL inactivation states IEC 60601 - Medical Electrical Equipment Safety Standards Series 11
shimonv IEC 60601-1-8 - When does an error message become an alarm signal? IEC 60601 - Medical Electrical Equipment Safety Standards Series 14
L Signal-to-Noise (S/N) Ratio formula check Design and Development of Products and Processes 2
M Taguchi Signal to Noise Ratios Misc. Quality Assurance and Business Systems Related Topics 3
R Should Medical Device SIGNAL INPUT/OUTPUT PART be overloaded? IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
R Signal Conditioning Card - Calibration Measurement Uncertainty Measurement Uncertainty (MU) 5
Q Signal from Supplier to do PPAP? APQP and PPAP 10
T Signal Words for CE Mark and FDA Labels US Food and Drug Administration (FDA) 7
R Volume of Alarm Signal per IEC 60601-1-8 IEC 60601 - Medical Electrical Equipment Safety Standards Series 5
R USB Port (Signal I/O) Isolation as per IEC60601-1 - Medical Device IEC 60601 - Medical Electrical Equipment Safety Standards Series 40
J ABS Signal Testing Dilemma Inspection, Prints (Drawings), Testing, Sampling and Related Topics 0
T Optimizing Multiple Response Variables Using Taguchi Signal-to-Noise ratios Statistical Analysis Tools, Techniques and SPC 3
Z Is thermal limits detection and switch to standby mode violate clause11.1.1 "- THERMAL CUT-OUTS shall not operate in NORMAL CONDITION." IEC 60601 - Medical Electrical Equipment Safety Standards Series 7
A PFMEA detection for "none" FMEA and Control Plans 5
J Is it correct to have a detection (error proofing) in subsequent operation? FMEA and Control Plans 10
M Detection rank for sampling vs 100% inspection & 15x vs 400x magnification FMEA and Control Plans 4
T RPN Thresholds and How Detection Fits In ISO 14971 - Medical Device Risk Management 5
B Handling lower detection limits for SPC and process performance Statistical Analysis Tools, Techniques and SPC 1
T Annual Validation as a detection mode on a PFMEA? FMEA and Control Plans 5
P Design FMEA - Detection Rating criteria ISO 14971 - Medical Device Risk Management 3
I Does anybody use Detection in medical device Design FMEA? ISO 14971 - Medical Device Risk Management 25
A Literature review/HACCP validation of metal detection Food Safety - ISO 22000, HACCP (21 CFR 120) 0
Jimmy123 FMEA - Preventive vs Detection Control FMEA and Control Plans 7
B Detection of Orange peel Manufacturing and Related Processes 3
C Detection Action for Failure Effects - AIAG 4th Edition Layout FMEA and Control Plans 5
C PCBA Hardware Component different failure types - How to rate detection? FMEA and Control Plans 8
P Detection rating for a user (surgeon) related failure mode in DFMEA APQP and PPAP 3
S Are Defibrillator Protection and Pacemaker pulse detection features mandatory as per IEC 60601-2-25 or 2-27...? IEC 60601 - Medical Electrical Equipment Safety Standards Series 11
Ashok sunder Is it possible to reduce FMEA Occurrence and Detection Ranking after corrective action taken for customer complaints? FMEA and Control Plans 6
D How to fill a Process FMEA - Three columns - Severity, occurrence and Detection FMEA and Control Plans 16
R DFMEA Severity 9-10 with Occurrence 3 and Detection 3 - Actions FMEA and Control Plans 3
K Creating together Standard Definition for Prevention and Detection FMEA FMEA and Control Plans 1
Q PFMEA Scope and Detection Controls FMEA and Control Plans 1
L Environmental Gas Leak Detection Equipment Recomendations Miscellaneous Environmental Standards and EMS Related Discussions 2
J Control Chart Pattern Detection Statistical Analysis Tools, Techniques and SPC 3
M Changing FMEA template to include Detection Ranking for the PFMEA FMEA and Control Plans 2
C How to evaluate the Detection Ranking of a new Design Control FMEA and Control Plans 1
C Poka Yoke and FMEA Detection Ranking FMEA and Control Plans 3
K 4th Edition AIAG FMEA Occurrence, Severity and Detection Criteria for Plastics FMEA and Control Plans 1
Z PFMEA Detection Controls and Ranking - Prevent Shipment FMEA and Control Plans 3
S PCR suitable for detection of Salmonella Food Safety - ISO 22000, HACCP (21 CFR 120) 1
S FMEA Visual Inspection Detection Rating FMEA and Control Plans 32

Similar threads

Top Bottom