Bayesian Updating for Quality Decisions: Turning Prior Knowledge Into Production Evidence
How beta-binomial models, defensible priors and sequential updating let quality engineers make launch decisions on small samples without discarding what…
Six Sigma & Data
150 articles
Remanufacturing Quality: Controlling a Process Whose Input Will Not Conform
Cores arrive worn, misidentified and secretly repaired. This is how to build assessment, grading, process control and warranty structures that…
Component Derating as a Quality Policy, Not a Design Preference
Reliability is decided at the schematic or not at all. This is how to turn derating from a designer's habit…
3D Scanning for Dimensional Quality: Point Clouds Versus Datum Reality
Optical scanners capture geometry, but they do not decide what is good. Alignment strategy, colour scale honesty and hybrid probing…
Torque Verification: Closing the Gap Between Calibration and Joint Integrity
Calibration certificates prove the tool, not the joint. A verification programme that prevents failures combines residual torque audits, angle control,…
Arrhenius Life-Stress Modelling for Predictive Maintenance Programmes
How accelerated life testing and thermal degradation curves move maintenance from reactive firefighting to predictive scheduling.
Inspection Strategy: Why 100% Inspection Produces More Defects Than Sampling
100% inspection after a defect escape feels right but increases defects. A layered, risk-based inspection strategy is the only mathematically…
Recovering Poka-Yoke Audit Evidence When the Digital Twin Has Already Failed
When auditors reject your digital twin as error-proofing evidence, the recovery path demands failure-mode remodelling, not better visualisation.
Data Systems and Tooling for Reliability-Centred Maintenance
Data architecture and system integration decisions determine whether an RCM programme governs maintenance decisions or quietly dies in a spreadsheet.
Process Capability Studies: Why Cpk Alone Misleads
A single Cpk value without context is a headline without the article. Here is how to evaluate, structure, and audit…