Final Exam Flashcards
what is TQM
total quality management is managing organization so that it excels on all dimensions that are important to the customer
what are the two fundamental objectives of TQM
- Process: something that works for the customer needs
2. Consistency: understanding and constantly improving the process
what are the 4 TQM commitments
- commitment to customer satisfaction
- commitment to understanding/constantly improving system
- commitment to complete employee commitment
- commitment to data-based decision making
name the three quality gurus
- Crosby
- Deming
- Juran
what did crosby say about quality
conformance to requirements
what did deming say about quality
a predictable degree of uniformity and dependability at low cost and suited to the market
what did jura say about quality
fitness for use; satisfies customer needs
design quality
the inherent value of the product in the marketplace; the value of that item to me as a customer
conformance quality
the degree to which the product of service design specs are met (more engineering based)
what might be the most important TQM commitment?
total employee involvement and commitment; quality is everyones job; you should not rely on inspecting step to validate quality; might require additional training
the two types of variations
- random - natural variation inherent in any system
- assignable - changes in process that can be attributed to a specific cause i.e. equipment, improper training, or bad materials
detection
reacting to problems as they arise
prevention
taking care of special cases by removing assignable variations in the system (more ideal)
what are the 4 costs of quality?
appraisal - same thing as detection; the costs of inspecting and texting to ensure quality
prevention - sum of p costs
internal failure costs - scrapping, OT, rush shipping
external failure costs - recalls
C suite is more concerned with ______
external failure costs
ISO9000
international organization for standardization: “document what you do and do as you document”…focuses on the consistency aspect of TQMl; some kind of a focus on suppliers??
what is six sigma?
a methodology; seeks to improve the quality by identifying and elimination the variations in manufacturing or business processes; each SS project has defined sequence of steps
how does six sigma work?
uses quality management methods (like stats) and then creates an infrastructure of experts to implement and use these methods within the organization
if implemented, there would be _____ defects per million
3.4
what are the six key concepts of six sigma?
- critical to quality
- defect
- process capability
- variation
- stable operations
- design for six sigma
critical to quality
attributes most important to the customer; if the customer doesn’t want it then don’t do it
defect
failing to deliver what the customer wants
process capability
what your process can deliver…is capable of maintaining your sigma
variation
what the customer sees and feels
stable operations
ensuring consistent, predictable processes to improve variations
design for six sigma
designing to meet customer needs and process capability; every part of the manufacturing process has to be aware of the six sigma
what is the six sigma methodology
DMAIC
define - identify customers and their priorities
measure - determine how to measure the process and how it is performing
analyze - determine the most likely causes of defects
improve - identify means to remove the causes of defects
control - figure how to maintain the improvements
attributes
quality characteristics that are classified as wither conforming or not conforming; yes/no
p-charts
variable
characteristics that are measured using an actual value; measuring
x bar and r chart
what does x bar mean
accuracy
what does r chart mean
precision
a process is out of control if:
- above/below UCL/LCL
- 2 pt spike near top/bottom (consecutive)
- 5 consecutive above or below
what are the 2 ways to ensure quality?
- SPC (x chart, r chart, p chart)
2. acceptance sampling (been around a lot longer than SPC)
what is acceptance sampling?
performed on goods that already exist to determine what percentages of the products conform to specifications ; executed through a sampling plan; results include accept, reject, or retest
what are the purposes of acceptance sampling?
- determine quality level
2. ensure quality is within predetermined level
how to design an acceptance sampling plan
- determine how many units to sample from a lit
2. determine eat maximum number of defective items that can be found in the lot before it is rejected (AQL)
AQL
acceptance quality level; maximum acceptable percentage of defectives defined by producer
what is lean manufacturing/lean production?
consider the use of materials on anything other than adding value for the end customer to be wasteful and should be eliminated..while also doing less work
what are the four rules of “lean” logic
- lean is based on the logic that nothing will be produced until it is needed
- a sale pulls a replacement from the last position in the system
- this triggers an order to the factory production line
- each upstream station then pull fro the next upstream
value chain
each step in the supply chain should create value for the end customer
waste
anything that does not add value from the customers perspective