Structural Stress
what is structural stress
When internal forces (bookcase) and external forces (books) weaken a structure over time.
Structures Fatigue
Permanent changes to the structures such as cracks.
Structural Failure
Structure breaks down.
Define ergonomics, provide examples.
is the science of designing equipment that people can use more efficiently and safely.
. Define prototype.
is a model used to test and evaluate a design.