All information needed to pass Quality Management 444, including calculation and theory based work. Both parts of the module are covered in these notes.
Power^6
2020
NOTES
D-Rocks performing a Quality balancing act.
, QM444
A2 = 40 Marks Reliability + 80 Marks
Quality Management
WEEK 1:
Introduction to Quality Management, Reliability
Engineering and Reliability Methods
**NOTES IN RELIABILITY ENGINEERING
WEEK 1 LECTURE
Acronyms:
Acronym Stands for Definition
CAD Computer-aided Design The use of appropriate integrated hardware and
software systems to perform specialized design
functions
CAE Computer-aided Engineering The use of computer software to simulate
performance in order to improve product designs
or assist in the resolution of engineering problems
for a wide range of industries.
CFD Computational Fluid Dynamics A branch of fluid mechanics that uses numerical
analysis and data structures to analyze and solve
problems that involve fluid flows.
CFR Constant Failure Rate The period during which failures of some units
occur at an approximately uniform rate.
CMMS Computerized Maintenance Computer software designed to simplify
Management System maintenance management.
COTS Commercial off the shelf Describes software or hardware products that are
ready-made and available for sale to the general
public.
DfR Design for reliability A process that encompasses tools and procedures
to ensure that a product meets its reliability
requirements, under its use environment, for the
duration of its lifetime.
DMAIC Define, Measure, Analyse, A problem solving and improvement process which
Improve and Control is informed by data and data analysis.
DOE Design of Experiments A branch of applied statistics that deals with
planning, conducting, analyzing, and interpreting
controlled tests to evaluate the factors that control
the value of a parameter or group of parameters.
A method for determining the relationships between
process factors and its outputs
EAMS Enterprise Asset Management A combination of software, systems and services
System used to maintain and control operational assets
and equipment.
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, QM444
EDA Electronic Design Automation A category of software tools for designing
electronic systems such as integrated circuits and
printed circuit boards.
FAA Finite Element Analysis A computerized method for predicting how a
product reacts to real-world forces, vibration, heat,
fluid flow, and other physical effects. Finite
element analysis shows whether a product will
break, wear out, or work the way it was designed.
FMECA Failure Mode, Effects and A method used to identify failure causes, their
Criticality Analysis effects and the severity of consequences against
the probability of failures
FOM Force of Mortality It is identical in concept to failure rate, also called
hazard function, in reliability theory.
FRACAS Failure Reporting, Analysis and A method for reporting, analysing and taking
Corrective Action System remedial action to prevent failures
FTA Fault Tree Analysis A graphical tool to explore the causes of system
level failures. It uses Boolean logic to combine a
series of lower level events and is basically a top-
down approach to identify the component level
failures (basic event) that cause the system level
failure (top event) to occur
HALT Highly Accelerated Life testing A method for discovering weaknesses which
originate during the design and production phases
of the product life cycle
HASS Highly accelerated stress A proven test method developed to find
screening manufacturing/production process induced defects
in electronics and electro-mechanical assemblies
before those products are released to market
HPP Homogenous Poisson process A type of random mathematical object that
consists of points randomly located on a
mathematical space
IID Independent and identically A collection of random variables where each
distributed random variable has the same probability
distribution as the others, and all are mutually
independent
ISO International organization for An international standard-setting body composed
standardization of representatives from various national standards
organizations
LCC Life cycle cost The process of estimating how much money you
will spend on an asset over the course of its useful
life
MTBF Mean time between failure The average time between system breakdowns
MTTF Mean time to failure The average amount of time a non-repairable asset
operates before it fails
NHPP Non-homogenous Poisson A process which is used to analyze failures with
Process increasing or decreasing trends
QA Quality Assurance A way of preventing mistakes and defects in
manufactured products and avoiding problems
when delivering products or services to customers
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, QM444
QFD Quality Function Deployment A method which at each stage of the product life
cycle translate customer requirements into
company requirements
RBD Reliability Block Diagrams A diagrammatic method for showing how
component reliability contributes to the success or
failure of a redundant.
RCM Reliability Centered A framework for analyzing functions with the aim
Maintenance of preserving the function, instead of the
equipment
ROCOF Rate of occurrence of failure the hazard rate equivalent for repairable systems
and is defined as the unconditional probability of
failure in global time
SPC Statistical process control A method where statistical methods, approaches
and techniques are used to control and monitor
the quality of production lines
TQM Total quality management A system of management based on the principle
that every member of staff must be committed to
maintaining high standards of work in every aspect
of a company's operations
Quality vs. Reliability
Reliability is:
§ a time-based concept for quality
§ Probability that something will perform its required function without failure under stated
conditions for a specified period of time.
Quality is:
§ the conformance to requirements at the start of use.
PAGE 4
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