MEASUREMENT OF STRAIN
Strain gauges represent an important application of a variable resistance transducer in an
electrical bridge circuit. You are to become familiar with the basic Wheatstone bridge
circuit. You should understand the effects of gauge pos
TEMPERATURE MEASUREMENT
Temperature measurement is perhaps the broadest area in engineering measurements.
There are a wide range of sensors and instruments available that allow the measurement
of temperature from cryogenic levels to that found in flames a
Strain Measurement
1 Strain Gauges
Lord Kelvin rst discovered that when you strain a wire its resistance changes.
This concept lead to the development of the strain gauge as shown in Figure 1.
Modern strain gauges consist of a rnetal foil sandwiched betwe
DIGITAL MEASUREMENT TECHNIQUES
In order to make an informed decision about any digital data acquisition system it is
necessary to understand which characteristics are important. You are to study methods of
digital data acquisition and transmission with th
MecE 380: Advanced Strength of Materials I
Section 2
Introduction to materials
Suggested readings:
The material discussed in this section is to set the context for the course. Many books discuss basic material
properties. Students are encouraged to refer
MecE 380: Advanced Strength of Materials I
Section 3 Stress strain relationships
E
(3.1)
dF
F dF dA dA
A
A dA
A
(3.2)
F
lim
A0 A
N
(3.3)
FN
lim
A0 A
(3.4)
Ft
S lim
A0 A
xy xz
xx
T yx yy yz
zx zy zz
(3.5)
(3.6)
x xy
Fx 0
x
y
y xy
Fy 0
y
x
(3
Pressure Measurement
Pressure is a key mechanical parameter in engineering science and industry. The pressure
magnitudes that are routinely measured by engineers range from micro-Pa to MPa in
applications from nano-science to large scale industrial operat
MECE 380 Fall 2012 - Tutorial #3
1. For the state of the plane stress shown, determine:
(a) the three principal planes and principal stresses,
(b) the maximum sharing stress.
2. The steel block shown is subjected to a uniform pressure on all its faces. Kn
MecE 380: Engineering Design II
Section 2
Introduction to materials
E xx E yy E zz E;
G xy G xy G zx G;
(2 . 1 )
xy xy zx
G
U0
1
y y
2
a
l
E
21
(2 . 2 )
= E
(2 . 3 )
= G
(2 . 4 )
(2 . 5 )
(2.6)
2-1
Department of Mechanical Engineering
University of Alberta
MecE 331 Fluid Mechanics
Assignment No. 4
(3 Problems)
Due October 11th, 2011 @ 1pm
1. A Venturi meter equipped with a glycerin
manometer is used to measure the mass flow
rate of gaseous propane a
Department of Mechanical Engineering
University of Alberta
MecE 331 Fluid Mechanics
Assignment No. 1
(3 Problems)
Due September 20, 2012 @ 1pm
1. A differential manometer is attached to
two tanks as shown in the figure.
Calculate the pressure difference
b
Department of Mechanical Engineering
University of Alberta
MecE 331 Fluid Mechanics
Assignment No. 2
(3 Problems)
Due September 27, 2012 @ 1pm
1. A thin 40cm cm flat plate is pulled at 2 m/s horizontally through a 3.6mm thick oil layer
sandwiched between