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📄 75 articles in total 📅 Continuously updated 🔥 Pinned first, then sorted by rating, views and publish date
Advanced Quality & R&D Quality · Process Development & Approval · PPAP & Process Approval

Customer Grants "Temporary Approval" and Production Lines Go Full Throttle? — Decoding Conditions of PPAP Temporary Approval and the Five-Step Method for Closing the Loop

A certain automotive parts company received a new project. The status column of the PSW read "Temporary Approval Interim…

Advanced Quality & R&D Quality · Advanced Planning · APQP Stage Gates

Advancing QE Skills (22) | APQP from a QE Perspective: What to Deliver at Each Stage and Where to Focus

1. Why Did a "Complete Documentation" APQP Fail on the First Trial Production Run? A new project at an automotive parts …

Advanced Quality & R&D Quality · Process Development & Approval · PPAP & Process Approval

23 Specifications, 23 Sets of PPAP? —— Five-Step Method for Family Part Submission and Representative Part Selection

A hardware supplier provides 23 different specifications of pins to the same customer, with varying hole diameters and l…

Advanced Quality & R&D Quality · Process Development & Approval · Control Plan (CP)

Control Plan Looks Good, but the Shop Floor Still Follows Old Habits? —— Five Steps to Drive Layered Process Audit (LPA) with the Control Plan

A plastic injection molding workshop produces an automotive interior component. The control plan CP is well written: a c…

Advanced Quality & R&D Quality · Design Quality · Special Characteristics & Drawing Specifications

Unannotated on the Drawing Means No Management? —— Five Steps for Identifying and Clarifying Unannotated Requirements

1. A Drawing Without Burr Annotations Led to the Loss of Three Batches of Goods A stamping bracket component of an autom…

Advanced Quality & R&D Quality · Process Development & Approval · PFMEA

Is Your PFMEA Beautifully Written, but the Production Line Doesn't Match? — The Five-Step Method of Reverse FMEA

An auditor from a customer of an automotive parts company stood for five minutes at a welding station and asked two ques…

Advanced Quality & R&D Quality · Process Development & Approval · PFMEA

Replacing RPN with AP: Why Prioritizing Actions Became More Confusing? — Five Steps to Implement FMEA Action Priority

After a car parts factory updated its FMEA, it changed the "RPN" column to the "AP" column. The first cross functional r…

Advanced Quality & R&D Quality · Process Development & Approval · PPAP & Process Approval

PPAP File Package Complete, but the Production Line Can't Keep Up? —— Five Steps for Capacity Verification (Run@Rate)

A certain automotive parts company submitted a PPAP, and the file package passed on the first attempt: 18 items were com…

Advanced Quality & R&D Quality · Design Quality · Special Characteristics & Drawing Specifications

The CC on the Drawing, but the Operator Doesn't Know — A Five-Step Method for Implementing Special Characteristics on the Shop Floor

1. The Question at the Audit Site A certain automotive parts company was undergoing a customer process audit. The audito…

Advanced Quality & R&D Quality · Process Development & Approval · PPAP & Process Approval

Can PPAP Be Submitted with a Ppk of Only 0.83? —— Five-Step Method for Sampling and Judging Initial Process Studies

A machining company submitted its PPAP, which was returned the next day with the client's sole reason: "The sampling for…

Advanced Quality & R&D Quality · Design Quality · Special Characteristics & Drawing Specifications

Does a CC on the Drawing Mean Cpk Must Reach 1.67? —— Grading Requirements for Special Characteristics and the Five-Step Method for Alternative Control

1. The Question at the Audit Table: "What is the Cpk for This CC?" A process audit was conducted at an automotive parts …

Advanced Quality & R&D Quality · Design Quality · DFMEA

DFMEA Completed, but Verification Plan Starts from Scratch? —— A Five-Step Approach to Linking Failure Causes to DVP&R

1. DFMEA Filled with Measures, but Sample Verification Only Conducts General Tests A car parts manufacturer discovered a…