What mechanism do you use to control variable special characteristics?

A

Andrews

#1
What control mechanism do you use to control variable special characteristics?
a) Pre-control
b) Xbar - R chart
c) X- MR chart
 
Elsmar Forum Sponsor
A

Andrews

#2
selection

How do you select special characteristics? Do you select characteristics that do not affect fit,form,function,safety or next operation also ?
 
S
#3
To answer your first question, start with the X-bar & R. No reason, its just that it appears easier to me.

Special characteristics should be selected from characteristics that have a "special" effect on the fit, form, function, safety, environment and operations of the product and subsequent processes.
A "special" effect IMO, is one that would render the product or process non-usable or inefficient, unsafe, a hazard to the environment and/or create these incidents in subsequent processes.
 
Thread starter Similar threads Forum Replies Date
R FOD (Foreign Objects and Debris) Control mechanism AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 6
V Best CAPA for slip in simple-yet-persistent oversight-review mechanism Nonconformance and Corrective Action 7
V Understanding Automotive Coating for Seating Mechanism Components Manufacturing and Related Processes 1
B Creating an Audit Mechanism (System/Plan) General Auditing Discussions 3
A Testing Process Audit - Defining a Process Compliance Mechanism Software Quality Assurance 2
V Driving Objectivity of Review Mechanism during Internal Audits ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 19
A Magnification for One Stage Dial Gauge Mechanism General Measurement Device and Calibration Topics 1
Chennaiite Automobile Differential Mechanism Explanation Video - Amazing Book, Video, Blog and Web Site Reviews and Recommendations 4
Marc Workings of Antikythera Mechanism Calculating Device Deciphered World News 0
Sidney Vianna Feedback mechanism on Whoisregistered.com - A database of registered companies ASQ, ANAB, UKAS, IAF, IRCA, Exemplar Global and Related Organizations 4
Marc Ancient Greek Computer Reconstructed - the Antikythera mechanism After Work and Weekend Discussion Topics 2
S NCR under MDD - No documented procedure for class I device registration mechanism ISO 13485:2016 - Medical Device Quality Management Systems 2
S Linking control chart with control plan Statistical Analysis Tools, Techniques and SPC 3
T IEC 62304 : Risk control for SaMD IEC 62304 - Medical Device Software Life Cycle Processes 8
N Change Control for processes & products Manufacturing and Related Processes 6
Q Change Control Numbering system Document Control Systems, Procedures, Forms and Templates 6
S Operation of possible rework in control plan FMEA and Control Plans 8
K MHLW MO169 2021 Japan Ministerial Ordinance on Standards for Manufacturing Control and Quality Control for Medical Devices and In-Vitro Diagnostics Japan Medical Device Regulations 2
D Using electronic lab notebooks in the design control process ISO 13485:2016 - Medical Device Quality Management Systems 3
M Process & Product Characteristic in Control Plan FMEA and Control Plans 17
D How to calculate the A4 constants in Median/Range control charts? Statistical Analysis Tools, Techniques and SPC 2
Nihls Quality Control (stability) Chart for CMM's - How the control limits are to be calculated Capability, Accuracy and Stability - Processes, Machines, etc. 2
M Change control on Tracking Sheet ISO 13485:2016 - Medical Device Quality Management Systems 11
K COPLANARITY: Composite profile tolerance on multiple surfaces- what does" lower dimensional reference frame tolerance" control? Inspection, Prints (Drawings), Testing, Sampling and Related Topics 11
M Medical Device Marketing Material - Control of Social Media 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 2
M Does 4.5 - Alternative RISK CONTROL apply to the Particular Standards? IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
H Control of Change i.e. process and WI IATF 16949 - Automotive Quality Systems Standard 9
Sonja D AIAG VDA PFMEA and Control Plan training FMEA and Control Plans 6
F Quality Control in Electrical Calibration ISO 17025 related Discussions 0
Z Why Control Limits are not the same depending on type of exclusion of data points Using Minitab Software 7
D Engineering Change order vs. Change Control ISO 13485:2016 - Medical Device Quality Management Systems 3
D Computer access, password control ISO 13485:2016 - Medical Device Quality Management Systems 6
A How to control distribution list? Document Control Systems, Procedures, Forms and Templates 2
A Control plan for IATF - example? FMEA and Control Plans 1
J ISO 9001:2015 Clause 8.5.1 Control of Production and service provision - Help with Work Instruction Access ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 13
A Final quality control corrective actions ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 10
J Training on the importance of Document Control Document Control Systems, Procedures, Forms and Templates 3
G How to implement H&S and Quality Control Requirements in Contract for Potential Supplier? Contract Review Process 6
D GAMP CAT 5 Change Control Qualification and Validation (including 21 CFR Part 11) 9
D Use Error Risk Controls and Control Verification ISO 14971 - Medical Device Risk Management 6
S Maintenence related action in Control plan FMEA and Control Plans 3
M ISO 13485 and document control for programs ISO 13485:2016 - Medical Device Quality Management Systems 6
R Control Methods in Control Plan FMEA and Control Plans 5
M Design Control - Management of Electronic CAD files Design and Development of Products and Processes 14
S TSCA (Toxic Substances Control Act) PIP 3:1 RoHS, REACH, ELV, IMDS and Restricted Substances 0
S Use of Attributes Control Charts Statistical Analysis Tools, Techniques and SPC 1
U Appraiser Out of Control Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 5
L Looking for Control Plan and FMEA Stamping process FMEA and Control Plans 2
Z AS9100 Control of Nonconforming Outputs - Rework Dispositions AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 8
K ASME, ANSI, ASTM and similar specifications and their requirements for document control. Inspection, Prints (Drawings), Testing, Sampling and Related Topics 8

Similar threads

Top Bottom