Acceptance Quality Level (AQL) is a quality control metric used in manufacturing and procurement. It defines the maximum percentage of defective items considered acceptable in a sample. AQL helps balance product quality with inspection costs by allowing a small predetermined number of defects.
AQL is crucial for maintaining consistent quality while optimizing resources in production and supply chain management.
Some key aspects of AQL inlcude sampling-based inspection, statistical inspection, customizable inspectione.
A
Average Outgoing Quality (AOQ): refers to The
maximum value of AOQ for all possible incoming quality levels.
Average Outgoing Quality (AOQ): refers to The long-run average quality of outgoing product after inspection.
Acceptable Quality Limit: Refers to the worst quality level that is still considered satisfactory.
C
Critical, Major, and Minor defects: Refers to the Categories of defects based on severity.
Consumer's Risk (Beta Risk): Refers to Probability of accepting a bad lot.
D
Defect: Refers to a flaw or imperfection in a product that doesn't meet specifications.
Double Sampling Plan: refers to uses two samples if the first is inconclusive.
L
Lot: Refers to the entire batch of products being evaluated.
O
Operating Characteristic (OC) Curve: Refers to the graph showing the probability of accepting lots at various quality levels.
P
Producer's Risk (Alpha Risk): Probability of rejecting a good lot.
R
Rejectable Quality Limit (RQL): The poorest quality level that should be rejected.
S
Sample: The subset of items randomly selected from the lot for inspection.
Single Sampling Plan: Refers to Inspection method using one sample to make a decision.