Page 306 - Root Cause Failure Analysis

294 Root Cause Failure Analysis

deductive The process of deriving a statement from certain
assumed statements by applying the rules of
logic.
density The mass of a substance per unit of volume.
detent A catch or lever in a mechanism that locks the
movement of a part, especially in escapement
mechanisms or ratchet devices that permit
motion in one direction slowly. In a valve, a
detent is used to hold the valve in its last
position.
deviation The difference between the actual value of a
controlled variable and the desired or average
value.
dial indicator Meter or gauge with a calibrated circular face
and a pivoted pointer to give readings.
digital Data having discrete values, as contrasted with
continuous analog data. Digital data recorders
convert continuous electrical analog signals into
numbered (digital) values and record these
values.
disseminate Distribute widely.

divergent Moving in different directions.
ductwork A system of enclosed runways.
duplex cylinder Cylinders having overlapping bores.
dynamic pressure The pressure that a moving fluid would have if it
were brought to rest by isentropic flow against a
pressure gradient; also known as impact pressure,
stagnation pressure, and total pressure.
dynamic response The response, measured over time, of a
component or system to a forcing function.
dynamics, operating Deals with the motion of a system under the
influence of forces, especially those forces that
originate outside the system under
consideration.
eccentric The condition when a disk or wheel has its axis
of revolution displaced from the center so that it
is capable of imparting reciprocating motion.