The Importance of GR&R in PPAP Processes

September 27, 2023

In the world of manufacturing and quality control, precision is the name of the game. Now, imagine you’re a Supplier Quality Engineer tasked with ensuring the accuracy and reliability of your Measurement System as part of your PPAP (Production Part Approval Process).

The key to achieving this lies in mastering Gauge Repeatability and Reproducibility, often abbreviated GR&R.

At its core, GR&R assesses the measurement system’s ability to produce consistent and reliable results. But what is the difference between Repeatability and Reproducibility?  

1. Repeatability (R): Variation in measurements obtained with one instrument when used several times by one operator while measuring the same feature on the same part.
2. Reproducibility (R): Variation in the average of the measurements taken by different operators using the same instrument when measuring the same feature on the same part.

The Impact of Neglecting GR&R: The Domino Effect

Now, let’s explore what could happen if the GR&R is not given its due attention:

• Inaccurate Data: Neglecting GR&R can result in reliable measurements, leading to correct decisions based on flawed data.
• Quality Issues: Inaccurate measurements can result in subpar product quality, customer dissatisfaction, and costly recalls.
• Wasted Resources: Valuable time and resources may be well-spent on troubleshooting non-existent issues or correcting problems caused by measurement errors.
• Loss of Reputation: Quality issues can damage your company’s reputation, eroding customer trust and potentially causing the loss of business.

To ensure you don’t fall victim to these dire consequences, having a reliable tool like Kiuey’s PPAP Manager in your arsenal is crucial. As a Supplier Quality Engineer, you want to focus on relevant activities, like ensuring the GR&R is adequately calculated, instead of focusing on managing documents.

Schedule a demo with us today and start to make time to master GR&R.