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Engineering Materials > PAES > Flashcards

PAES Flashcards

1
Q

flexible machine element used to transmit motion and power between two shafts, the cross section of which is shaped roughly like a regular trapezoid outlined by the base, sides and top of the belt

A

V-belt

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2
Q

wheel with one or more grooved rims used to transmit motion and power by means of one or more V-belts

A

V-pulley

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3
Q

power transmission device, which consists of one or more V-belts, mounted on two or more
V-pulleys

A

V-belt drive

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4
Q

the outside diameter of the pulley

A

Pulley diameter

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5
Q

the diameter of the pulley, which coincides with the belt pitch

A

Pulley pitch diameter

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6
Q

the region in the belt that keeps the same length when the belt is bent perpendicularly to its base

A

belt pitch

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7
Q

the length of the belt at the level of its pitch

A

Belt length

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8
Q

ratio of the angular velocities of the pulleys making no allowance for slip and creep

A

Speed ratio

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9
Q

the linear speed of the belt at the level of the pulley pitch diameter

A

Belt speed

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10
Q

belts used to transmit rotary motion and power between two shafts, which lie flat on the face
of its corresponding pulley

A

Flat belt

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11
Q

wheel having flat or crowned face used to transmit motion and power by means of flat belts

A

Flat belt pulley

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12
Q

power transmission device used to transmit power and motion between two shafts consisting of flat belts which ride in flat pulleys

A

Flat belt drive

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13
Q

outside diameter of the pulley

A

pulley diameter

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14
Q

stretched-out length of the belt

A

Belt length

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15
Q

ratio of the angular velocities of the pulleys making no allowance for slip and creep

A

Speed rafio

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16
Q

the linear speed of the belt calculated by multiplying the rpm and the diameter of the driver pulley and to the value of pi

A

Belt speed

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17
Q

distance between adjacent joint members

A

Chain pitch

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18
Q

the diameter of the pitch circle that passes through the centers of the link pins as the chain is wrapped on the sprocket

A

Pitch diameter

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19
Q

the diameter of a circle tangent to the curve (called the seating curve) at the bottom of the
tooth gap

A

Bottom diameter

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20
Q

for a sprocket with an odd number of teeth, it is the distance from the bottom of the tooth gap
to that of the nearest opposite tooth gap

A

Caliper diameter

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21
Q

it is the diameter over the tips of the teeth

A

Outside diameter

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22
Q

keys whose longitudinal sides are parallel with each other.

A

Parallel keys

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23
Q

keys with a tapered longitudinal section.

A

Taper keys

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24
Q

keys with a semi-circular cross-section.

A

Woodruff keys

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25
Q

a cylindrical gear whose tooth traces are straight lines parallel to the axis. Generally, it
transmits rotational motion and power between two axes

A

Spur gear

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26
Q

each of the projecting parts of a gear which are intended to ensure, by contact with the teeth of another gear, that one of the other gear turns the other

A

Gear tooth

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27
Q

the quotient of the pitch, expressed in millimeters, to the number π (or the quotient of the reference diameter, expressed in millimeters, to the number of teeth)

A

Module

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28
Q

the line of intersection of the pitch cylinder by a plane perpendicular to the axis of the gear

A

Pitch circle

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29
Q

the radial distance between the addendum circle and the pitch circle

A

Addendum

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30
Q

the diameter of the addendum circle

A

Addendum diameter

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31
Q

the diameter of the of the dedendum circle

A

Dedendum diameter

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32
Q

the radial distance between the addendum circle and the dedendum circle

A

Tooth depth

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33
Q

the length of the arc of the pitch circle between two consecutive corresponding profiles

A

Circular pitch

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34
Q

the width of the tooth measured along the circular

A

Tooth thickness

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35
Q

the space between teeth measured along the pitch circle

A

Tooth space

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36
Q

the tooth space minus the tooth thickness

A

Backlash

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37
Q

the width over the toothed part of a gear, measured along a straight line generator of the reference cylinder

A

Face width

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38
Q

The portion of the surface of a tooth lying between the tip surface and the root surface

A

Tooth plank

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39
Q

angle at the point where the profile cuts the pitch circle

A

Pressure angle

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40
Q

of an involute cylindrical gear, the “base circle” of the involutes forming the tooth profiles

A

Base circle

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41
Q

the line of intersection of a tooth flank with any defined surface cutting the reference surface

A

Tooth profile

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42
Q

the line of intersection of a flank with the reference surface

A

Tooth trace

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43
Q

a cylindrical gear of which every usable tooth profile is an arc of an involute to a circle

A

involute cylindrical gear

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44
Q

a plane curve described by a point on a straight line (the “generating line”), which rolls out without slip on the base circle

A

involute to a circle

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45
Q

Spur gear materials shall be of hot-rolled steel designation 1045 and 3140 with an ultimate
tensile strength of _____ and a Brinell Hardness Number of _______
respectively.

A

600 @724 MPA

215@205

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46
Q

cylindrical gear whose tooth traces are helices, it transmits rotational motion and power
between two parallel axes

A

helical gear

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47
Q

each of the projecting parts of a gear which is intended to ensure, by contact with the teeth of
another gear, that one gear turns the other

A

gear tooth

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48
Q

quotient of the circular pitch, expressed in millimeters, to the number π (or the quotient of the
diametral pitch, expressed in millimeters, to the number of teeth)

A

module

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49
Q

quotient of the normal circular pitch (expressed in millimeters)and the number π, where the
normal circular pitch is the product of the circular pitch and the cosine of the helix angle

A

normal module

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50
Q

line of intersection of the pitch cylinder by a plane perpendicular to the axis of the gear

A

pitch circle

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51
Q

radial distance between the addendum circle and the pitch circle

A

addendum

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52
Q

circle that bounds the outer ends of the teeth

A

addendum circle

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53
Q

radial distance between the dedendum circle and the pitch circle

A

dedendum

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54
Q

line of intersection of the dedendum cylinder by a plane perpendicular to the axis of the gear

A

dedendum circle

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55
Q

amount by which the dedendum in a given gear exceeds the addendum of its meshing gear

A

clearance

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56
Q

diameter of the pitch circle

A

pitch diameter

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57
Q

diameter of the addendum circle

A

addendum diameter

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58
Q

diameter of the of the dedendum circle

A

dedendum diameter

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59
Q

radial distance between the addendum circle and the dedendum circle

A

tooth depth

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60
Q

length of the arc of the pitch circle between two consecutive corresponding points of adjacent
teeth

A

circular pitch

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61
Q

length of the arc, living between the tooth traces of two consecutive corresponding flanks of a
cylindrical normal helix

A

normal circular pitch

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62
Q

width of the tooth measured along the circular pitch

A

tooth thickness

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63
Q

space between teeth measured along the pitch circle

A

tooth space

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64
Q

difference between the tooth space and the tooth thickness

A

backlash

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65
Q

width over the toothed part of a gear, measured along a straight line generator of the
reference cylinder

A

face width

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66
Q

portion of the surface of a tooth lying between the tip surface and the root surface

A

tooth flank

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67
Q

pressure angle at the point where the profile cuts the pitch circle

A

pressure angle

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68
Q

pressure angle at a point on a tooth trace

A

normal pressure angle

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69
Q

curve whose tangents are inclined at a constant angle to the axis of the cylinder

A

helix

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70
Q

in a cylinder on which helix is considered, a helix which is perpendicular to that helix

A

normal helix

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71
Q

acute angle between the tooth trace and the generator of any imaginary cylinder or cone
coaxial with a gear whose tooth trace is under consideration

A

helix angle

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72
Q

of an involute cylindrical gear, the “base circle” of the involutes forming the tooth profiles

A

base circle

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73
Q

the line of intersection of a tooth flank with any defined surface cutting the reference surface

A

tooth profile

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74
Q

the line of intersection of a flank with the reference surface

A

tooth trace

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75
Q

a cylindrical gear of which every usable tooth profile is an arc of an involute to a circle

A

involute cylindrical gear

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76
Q

a plane curve described by a point on a straight line (the “generating line”), which rolls out
without slip on the base circle

A

involute to a circle

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77
Q

gears which are used to transmit motion and power to shafts having intersecting axes

A

bevel gears

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78
Q

bevel gears whose teeth are straight but the sides are tapered so that they would intersect the
axis at a common point called the pitch cone apex if extended inward

A

straight bevel gears

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79
Q

bevel gears having equal numbers of driver and driven gear teeth and operate at axes with
right angles

A

miter gears

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80
Q

the quotient of the pitch, expressed in millimeters, to the number π (or the quotient of the
reference diameter, expressed in millimeters, to the number of teeth)

A

module

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81
Q

the length of the arc of the pitch circle between two consecutive corresponding profiles which
is measured at the large end of the tooth

A

circular pitch

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82
Q

the diameter of the pitch circle at the large end of the tooth

A

pitch diameter

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83
Q

the angle between the elements of the face cone and the pitch cone

A

addendum angle

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84
Q

the angle between the elements of the root cone and the pitch cone

A

dedendum angle

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85
Q

the length of teeth along the cone distance

A

facewidth

86
Q

the distance from the end of the tooth to the pitch apex

A

cone distance

87
Q

the angle formed between an element of the pitch cone and the bevel gear axis, it is the half
angle of the pitch cone

A

pitch angle

88
Q

the angle between an element of the back cone and the plane of rotation

A

back angle

89
Q

the angle of a cone whose elements are tangent to a sphere containing a trace of the pitch
circle

A

back cone

90
Q

the distance along an element of the back cone from the apex to the pitch circle

A

back cone distance

91
Q

for assembled bevel gears, the distance from the crossing point of the axes to the registering
surface, measured along the gear axis; ideally it should be identical to the apex to back

A

mounting distance

92
Q

the diameter and/or plane of rotation surface which is used in locating the gear in the
application assembly

A

mounting surface

93
Q

the sharp corner forming the outside diameter

A

crown

94
Q

the distance from the crown to the rear of the gear

A

crown-to-back

95
Q

the distance along the axis from apex of pitch cone to a locating registering surface on back

A

pitch apex to back

96
Q

the angle formed between a tooth element and the axis of the bevel gear

A

root angle

97
Q

the angle between meshing bevel gear axes: also, the sum of the two pitch angles

A

shaft angle

98
Q

the between an element of the face cone and its axis (

A

face angle

99
Q

the angle between an element of the front cone and a plane of rotation

A

front angle

100
Q

the portion of the bevel gear tooth near the outer end

A

heel

101
Q

the portion of the bevel gear tooth near the inner end

A

toe

102
Q

load or force passing through the axis of rotation

A

radial load

103
Q

L10
the number of revolutions or hours at a given constant speed that 90 percent of an apparently
identical group of bearings will complete or exceed before the first evidence of fatigue
develops

A

rated life

104
Q

C

the radial load that a ball bearing can withstand for one million revolutions of the inner ring

A

basic dynamic load rating

105
Q

P
constant stationary radial load which, if applied to a bearing with rotating inner ring and
stationary outer ring, would give the same life as that which the bearing will attain under the
actual conditions of load and rotation

A

equivalent dynamic load

106
Q

CO
the maximum radial load, which corresponds to a calculated contact stress at the center of the
most heavily, loaded rolling element/raceway contact of:
• 4,600 MPa for self-aligning ball; bearings;
• 4,200 MPa for all other ball bearings
• 4,000 MPa for all roller bearings

A

basic static load rating

107
Q

PO
static radial load, if applied, which produces a maximum contact stress equal in magnitude to
the maximum contact stress in the actual condition of loading

A

equivalent static load

108
Q

sleeve bearing

a cylinder which surrounds the shaft and is filled with some form of fluid lubricant

A

journal bearing

109
Q

the part of the rotating shaft , axle, roll or spindle that turns in a bearing

A

journal

110
Q

a medium that supports the shaft preventing metal to metal contact

A

lubricant

111
Q

a mechanical device designed specifically to hold, join, or maintain equilibrium of single or
multiple components

A

fastener

112
Q

an externally threaded fastener designed for insertion through holes in assembled parts, and
normally tightened or released by torquing a nut

A

bolt

113
Q

a block or sleeve having an internal thread designed to assemble with the external thread on a
bolt, screw, stud or other threaded part

A

nut

114
Q

the designation used for the purpose of general identification; for external and internal
threaded fasteners nominal size usually is the basic major diameter of the thread; for
unthreaded fasteners, nominal size is usually the basic body diameter

A

nominal size

115
Q

the length of a headed fastener is the distance from the intersection of the largest diameter of
the head with the bearing surface to the extreme end of the fastener, measured parallel to the
axis of the fastener

A

length of fastener

116
Q

a thread which winds in a clockwise and receding direction from the starting end, when
viewed from that end

A

right-hand thread

117
Q

a thread which winds in a counterclockwise and receding direction from the starting end,
when viewed from that end

A

left-hand thread

118
Q

the specified load which the fastener must withstand without any indication of permanent
deformation after the load is released

A

proof load

119
Q 
the distance (in millimeters), measured parallel to the thread axis, between corresponding
points on adjacent thread forms in the same axial plane on the same side of the axis
A

pitch

120
Q

for a straight thread, this is the diameter of the imaginary cylinder bounding the crest of an
external thread or the root of an internal thread

A

major diameter

121
Q

for a straight thread, this diameter is the imaginary cylinder bounding the root of an external
thread or the crest of an internal thread

A

minor diameter

122
Q

for a straight thread, this is the diameter of the imaginary cylinder whose surface passes
through the thread profiles in such a way to make the widths of the thread ridge and the
thread groove equal

A

pitch diameter

123
Q

a headed pin of metal used for uniting two or more pieces by passing the shank through a
hole in each piece and then by beating or pressing down the plain end so as to make a second
head

A

rivet

124
Q

the diameter of the shank

A

nominal diameter

125
Q

the length from the underside of the head to the end of the shank

A

nominal length (rivets other than countersunk or raised countersunk rivets)

126
Q

the distance from the periphery of the head to the end of the rivet measured parallel to the
axis of the rivet

A

nominal length (countersunk and raised countersunk head)

127
Q

a type of riveted joint wherein the plates overlap each other and are held together by one or
more rows of rivets.

A

lap-joint

128
Q

a type of riveted joint wherein the plates being joined are in the same plane and are joined by
means of a cover plate or butt strap which is riveted to both plates by one or more rows of
rivets

A

butt-joint

129
Q

spacing between rivet centers

A

pitch

130
Q

the distance from the edge of the plate to the centerline of the nearest row of rivets

A

margin

131
Q

allowance in length of rivet in order to turn over or flatten the protruding end

A

clinch allowance

132
Q

a mechanical device designed specifically to hold, join, or maintain equilibrium of single or
multiple components

A

fastener

133
Q

an externally threaded fastener capable of being inserted into holes in assembled parts, of
mating with preformed internal thread or forming its own thread, and of being tightened or
released by torquing the head

A

screw

134
Q

the designation used for the purpose of general identification; for external and internal
threaded fasteners nominal size usually is the basic major diameter of the thread; for
unthreaded fasteners, nominal size is usually the basic body diameter

A

nominal size

135
Q

the length of a headed fastener is the distance from the intersection of the largest diameter of
the head with the bearing surface to the extreme end of the fastener, measured parallel to the axis of the fastener; the length of a headless fastener is the distance from one extreme end to
the other in a line parallel to the axis

A

length of fastener

136
Q

a thread which winds in a clockwise and receding direction from the starting end, when
viewed from that end

A

right-hand thread

137
Q

a thread which winds in a counterclockwise and receding direction from the starting end,
when viewed from that end

A

left-hand thread

138
Q 
the distance (in millimeters), measured parallel to the thread axis, between corresponding
points on adjacent thread forms in the same axial plane on the same side of the axis
A

pitch

139
Q

the specified load which the fastener must withstand without any indication of permanent
deformation after the load is releasedthe specified load which the fastener must withstand without any indication of permanent
deformation after the load is released

A

proof load

140
Q

for a straight thread, this is the diameter of the imaginary cylinder bounding the crest of an
external thread or the root of an internal thread

A

major diameter

141
Q

for a straight thread, this diameter is the imaginary cylinder bounding the root of an external
thread or the crest of an internal thread

A

minor diameter

142
Q

for a straight thread, this is the diameter of the imaginary cylinder whose surface passes
through the thread profiles in such a way to make the widths of the thread ridge and the
thread groove equal

A

pitch diameter

143
Q

long evenly shaped piece of solid metal

A

bar

144
Q

steel bar with lugs or protrusions called deformations

A

deformed bar

145
Q

diameter equivalent to the diameter of a plain round bar having the same mass per meter

A

nominal diameter of deformed bar

146
Q

long hollow cylinder of specified thickness whose nominal size is approximated by the inside
diameter

A

pipe

147
Q

long hollow product of round or any other cross-section whose size is specified by the outside
dimensions

A

tube

148
Q

rolled rectangular section of thickness over 0.15 mm up to 6.0 mm, with sheared, slit or sawn
edges

A

aluminium and aluminium alloy sheet

149
Q

galvanized flat or corrugated metal product cut to the standard or specified length and has a
nominal base metal thickness ranging from 0.20 mm to 1.6 mm and a flat width of 760 mm to
1,220 mm

A

galvanized steel sheet

150
Q

hot-rolled product supplied in cut lengths and produced by cutting from a coil rolled on a
continuous mill. It has a width of at least 600 mm and a nominal thickness of less than 3 mm.
The edges of the sheet may be either trimmed or untrimmed

A

hot-rolled steel sheet

151
Q

product obtained by hot-dip coating steel sheet coils on a continuous aluminium/zinc coating
line to produce either coated coils or cut lengths

A

continuous hot-dip aluminium/zinc-coated steel sheet

152
Q

rolled rectangular section of thickness greater than 6.0 mm with either sheared or sawn edges

A

aluminium and aluminium alloy plate

153
Q

hot-rolled product supplied in cut lengths and produced by cutting from a coil rolled on a
continuous mill. It has a width of at least 600 mm and a nominal thickness of 3 mm
minimum. The edges of the sheet may be either trimmed or untrimmed

A

hot-rolled steel plate

154
Q

flat sheet which is intended for general fabricating purposes where it is used as such or for
bending or moderate forming

A

galvanized commercial quality

155
Q

sheet or coil which is intended for lock-seaming and other similar applications and have
better formability than commercial quality

A

galvanized lock-forming quality

156
Q

sheet or coil which is intended for drawing or severe forming but excluding deep drawing

A

galvanized drawing quality

157
Q

quotient of the load (when the specified permanent elongation occurs in a tensile test) divided
by the original cross-sectional area

A

proof stress

158
Q

term applied to changes in physical and mechanical properties of low carbon steel that occur
with the passage of time and adversely affect formability

A

ageing

159
Q

removal of oxygen which causes oxidation of steel

A

deoxidation

160
Q

are designed to reduce coupling shack by slipping during the engagement
period. They also serve as safety devices by slipping when the torque exceeds their
maximum rating.

A

Friction clutches

161
Q

produces its torque by virtue of the centrifugal force of weights pressing
against the driving or frictionally driven member.

A

Centrifugal clutch

162
Q

consists of a frustum of a cone, so fitted to a shaft by means of a
feather key that it can be pushed into an opposite engaging surface rigidly attached to the
other shaft.

A

conical friction clutch

163
Q

designed to transmit torque without slip, jaw clutches are the most
common. These are made with square jaws for driving in either directions, or spiral jaws for
unidirectional drive. These are used for slow-moving shafts, where sudden starting action is
not objectionable and where the inertia of the moving parts is relatively small.

A

Positive clutches

164
Q

are used when the shafts are virtually collinear and when they remain in a
fixed angular relation with respect to each other (except for angular deflection).

A

Rigid couplings

165
Q

is essentially a split and bolted sleeve coupling, proportioned to
clamp firmly on the shafts

A

Clamp shaft coupling

166
Q

are commonly used in permanent installations for heavy loads and large
sizes and particularly for vertical drives, as agitators

A

Flange face coupling

167
Q

are designed to connect shafts which are misaligned either laterally or
angularly. A secondary benefit is the absorption of impacts due to fluctuations in shaft torque
or angular speed.

A

Flexible couplings

168
Q

The hubs have integral external gear teeth, perhaps crowned, that mesh with internal teeth in
the casing through 360° as in a splined connection. Flexibility is obtained by play between
the teeth

A

Gear-type coupling

169
Q

Eliminates the need for large clearances and the resultant noisy backlash by providing a
double-tongued central slider fitting between two flanges slotted at right angles to each other

A

Oldham (double slider) coupling

170
Q

The rubber-bushed coupling cushions by means of steel pins bolted alternately to one flange
and sliding in self-lubricated bronze bushings, rubber-cushioned in the opposite flange. The construction permits free axial movement to accommodate motor end play and
is especially suited to damping shock and momentary overload. It also affords electrical
insulation, thus preventing such dangers as electrolysis in direct motor-driven pumps.

A

Rubber-bushed coupling

171
Q

The two opposing hubs are made with integral sprockets over which a double roller chain is
fitted. The drive is through the chain. Flexibility is obtained by lateral play in the fit
of the chain over the sprocket teeth.

A

Roller chain flexible coupling

172
Q

In a rubber-flexible coupling, the torque is transmitted through a comparatively soft rubber in
compression. It is recommended where quietness is desired

A

Rubber-flexible coupling

173
Q

are used to connect shafts with much larger values of misalignment than can
be tolerated by the other types of flexible couplings

A

Universal joint

174
Q

synthetic organic material, including cellulose derivatives, with or without the incorporation
of fillers, binders, pigments, dyes, which is capable of being shaped more or less permanently
by casting or molding under increased temperatures and pressures

A

plastic

175
Q

simple unpolymerized form of chemical compound

A

monomer

176
Q

chemical compound with higher molecular weight consisting of a number of structural units
linked together by covalent bonds

A

polymer

177
Q

polymers consisting of more than one monomer

A

copolymer

178
Q

non-ionic chemical bond formed by stored electrons

A

covalent

179
Q

substances that melt on heating and are processes in this state by a variety of extrusion and
molding process

A

thermoplastic

180
Q

substances that cannot be melted and remelted

A

thermosets

181
Q

temperature at which the plastic can withstand without incurring a change in its physical
properties

A

service temperature

182
Q

provides high strength and stiffness while offering enhanced dimensional stability and
ease of machining. A semi-crystalline material, acetal also has a low coefficient of friction
and good wear properties-especially in wet environments. Because it absorbs little moisture,
acetal demonstrates excellent stability for close-tolerance machined parts. In high-moisture or
submerged applications, acetal bearings outperform nylon 4 to 1. This material is resistant to
a wide range of chemicals, including many solvents. And it is available in a broad range of
grades (see below), with properties addressing specific needs.

A

Acetals

183
Q

shall be made from virgin acrylic monomer and offers superior optical clarity
and light transmission. It shall not affected by sunlight; it resists aging; and it remains stable
across a wide range of temperature, moisture, and exposure conditions. It will not crack,
craze, or corrode. Cast acrylic is preferred for some industrial and commercial applications
because of its optical superiority over molded or extruded acrylic products. Cast acrylic can
be machined or cemented and, with standard equipment, will fabricate like wood, metal, or
other plastics. It weighs half as much as comparable glass and yet has good shatter resistance
and durability.

A

Cast acrylic

184
Q

also known as nylon is one of the most versatile and widely used thermoplastic
materials. Its physical properties and reasonable price combine to make it a popular choice
for numerous applications. It can replace steel, brass, bronze, aluminum, wood, and rubber,
while reducing noise, using less lubrication, and increasing gear life. Using standard
metalworking equipment, nylon can easily be machined and fabricated into precision parts.

A

Polyamide (Nylon)

185
Q

is an amorphous thermoplastic with excellent dimensional stability and good
strength and stiffness over a wide range of service temperatures. It is often used for structural
applications when transparency and impact strength are essential-such as lenses, manifolds,
site glasses, and machine guards. Polycarbonate suits a wide variety of electrical applications
as well, because of its low moisture absorption, good insulation and excellent flammability
rating.

A

Polycarbonate

186
Q

is noted for its light weight, being less dense than water; it is a polymer of
propylene. It resists moisture, oils, and solvents. Since its melting point is 121°C (250°F), it
is used in the manufacture of objects that are sterilized in the course of their use.

A

Polypropylene

187
Q

more popularly known as Teflon is based on chain of carbon atoms,
the same as all polymers. Given their good dynamic mechanical properties and sufficient
flexibility, PTFE and modified PTFE-based materials are ideally suited for use as dynamic
seals and bearings, even when the stress is extreme.

A

Polyterafluoroethylene (PTFE)

188
Q

is a thermoplastic that is a polymer of vinyl chloride. Resins of
polyvinyl chloride are hard, but with the addition of plasticizers a flexible, elastic plastic can
be made. This plastic has found extensive use as an electrical insulator for wires and cables.

A

Polyvinyl chloride (PVC)

189
Q

type of plywood intended for outdoor or marine uses, also known as Type I

A

exterior plywood

190
Q

surface of the plywood showing veneer of higher grade than that of the back side

A

face

191
Q

plywood faced with a material other than wood, such as metal or plastic

A

face-plywood

192
Q

panel made of consolidated ligno-cellulosic fibers with the primary bond derived from their
inherent adhesive properties and/or the addition of resin or other materials

A

fiberboard

193
Q

consist essentially of an inorganic hydraulic binder or a calcium silicate binder formed by the
chemical reaction of a siliceous material and a calcareous material reinforced by organic
fibers and/or inorganic synthetic fibers

A

fiber-cement flat sheets

194
Q

type of plywood intended for inside use, having limited moisture resistance

A

interior plywood

195
Q

side board made up of well machined lumber strips properly dried and glued together

A

lumber core

196
Q

ply board
plywood made up of face/back veneer, crossboard core veneer and well composed kiln dried
lumber core

A

lumber core plywood

197
Q

sheet of plywood

A

panel

198
Q

board principally made from wood chips and formed by hot press process with adhesive

A

particle board

199
Q

stratum or layer used in referring to the successive layers of veneer in a panel

A

ply

200
Q

assembled product made of layers of veneers and/or lumber core held together by an
adhesive, the chief characteristics of which is the alternate cross layers, distributing the
longitudinal wood strength

A

plywood

201
Q 
This bonding class is appropriate for veneer plywood intended for use in normal interior
climates.
A

Class 1 (dry conditions)

202
Q 
This bonding class is appropriate for veneer plywood intended for protected external
applications (e.g. behind cladding or under roof coverings), but capable of resisting weather
exposure for short periods (e.g. when exposed during construction). It is also suitable for
interior situations where the service moisture condition is higher than the class 1 level.
A

Class 2 (humid conditions)

203
Q 
This bonding class is designed for veneer plywood intended for exposure to weather over
sustained periods.
A

Class 3 (exterior conditions)

204
Q

A high density fiberboard without subsequent treatment generally intended for interior use.

A

Standard fiberboard

205
Q

A high density fiberboard that has been specially treated with drying oil, petroleum
derivatives or other compounds stabilized by baking or heating, and generally intended for
the use where moisture resistance is required.

A

Tempered fiberboard

206
Q

A hardboard without any factory-applied finish.

A

Plain

207
Q

High density fiberboard with a smooth surface on one side and a screen impression on the
other side.

A

Smooth-one-side (S1S)

208
Q

High density fiberboard with smooth surfaces on both sides.

A

Smooth-two-sides (S2S)

209
Q

Hardboard which has a pattern impressed on one surface, e.g. simulating some other
materials such as leather, sawali, wood grain, bark, diamond, fine weave, and others.

A

Decorative

210
Q

Usually S1S hardboard with holes punched or drilled at the factory for use with various
fixtures to provide decorative wall-mounted storage facilities or which may be used for
acoustic purposes.

A

Perforated

Engineering Materials (1 decks)

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