Design for Quality and Product Excellence

These flashcards cover key concepts related to design for quality and product excellence, focusing on reliability, design principles, and testing methodologies.

Reliability

The probability that a product, piece of equipment, or system performs its intended function for a stated period of time under specified operating conditions.

Inherent Reliability

Predicted reliability determined by the design of the product or process.

Achieved Reliability

Actual reliability observed during use.

Failure Rate (λ)

The measure of reliability, expressed as failures per unit time.

Mean Time to Failure (MTTF)

The average time expected until a product fails.

Mean Time Between Failures (MTBF)

For repairable items, the average time between failures.

Reliability Function R(T)

The probability that an item will survive over a given period of time.

Hazard Function

The probability of immediate failure at time t during the useful life period.

Design for Manufacturability (DFM)

The process of designing a product for efficient production at the highest level of quality.

Design Failure Mode and Effects Analysis (FMEA)

A systematic method for evaluating the potential failure modes of a product and their impact on the intended use.

Fault Tree Analysis

A method to describe combinations of conditions or events that can lead to a failure.

Design Optimization

The process of making products and processes better by identifying optimal configurations and reducing defects.

Redundancy in Systems

Having backup components in a system configuration to maintain functionality in case one part fails.

Design for Environmental Responsibility (DFE)

The consideration of environmental concerns during the design of products and processes.

Robust Design

Designing goods and services that are insensitive to variations in manufacturing processes and usage.