IPC-TM-650 EN 2022 试验方法--.pdf - 第66页

The Institute for Int erconnecting and Packaging E lectronic Circuits 2215 S anders Road • Northbrook, IL 60062-6135 Material in this T est M ethods Manual was voluntarily establis hed by T echni cal Committees of the IP…

100%1 / 824
The Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
Material in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
Page 1 of 1
IPC-TM-650
TEST
METHODS
MANUAL
1
.0
Scope
This
method
is
designed
to
determine
thread
count
of
woven
glass
fabric
used
for
prepreg
(resin-
impregnated
glass
fabric,
or
B-stage).
It
is
applicable
for
glass
fabric
inspection
before
and
after
impregnation.
2
.0
Applicable
Documents
None
3
.0
Test
Specimens
Unless
otherwise
specified,
three
specimens
cut
to
the
size
convenient
to
performing
the
test,
with
a
minimum
of
101.6
x
101.6
mm
[4.0
x
4.0
in],
shall
be
cut
from
random
locations
in
a
roll
or
one
each
from
three
sample
sheets.
The
warp
and
fill
directions
of
the
fabric
shall
be
noted.
4
.0
Apparatus
or
Material
4.1
Muffle
furnace
A
muffle
furnace
that
is
capable
of
maintaining
550
±50℃
[1022
±90°
F].
4.2
Magnifier
and
counting
device.
Type
and
model
to
be
determined,
or
equivalent.
4.3
Gingher
Thread
Counter,
Model
G4,
or
equivalent.
5
.0
Procedure
5.1
Method
A:
Thread
Count
by
Picks
per
Inch
Method
5.1.1
For
prepreg,
place
specimens
in
a
muffle
furnace
at
550
±50℃
[1022
±90°
F]
for
a
minimum
of
15
minutes
or
until
sufficient
resin
is
burned
away
to
be
able
to
clearly
see
the
yarns
of
the
fabric.
After
removing
the
specimens
from
the
muffle
furnace,
allow
to
cool
to
room
temperature
on
a
flat
surface
to
prevent
distortion
of
the
fabric.
Number
2.1.7
Subject
Thread
Count
of
Glass
Fabric
Date
Revision
12/94
C
Originating
Task
Group
MIL-P-13949
Test
Methods
Task
Group
(7-1
1b)
5.1.2
Place
the
specimen
as
flat
as
possible,
without
ten¬
sion,
on
a
smooth
horizontal
surface.
Use
the
magnifier
and
measuring
device
to
count
the
yarns
within
a
specific
dis¬
tance,
25.4
mm
[1.0
in]
minimum,
in
each
direction
of
the
cloth.
5.2
Method
B:
Thread
Count
by
Gingher
Thread
Counter
Method
5.2.1
Lay
the
Gingher
comparator
parallel
along
one
grain
direction
to
be
counted.
Rotate
the
comparator
back
and
forth
out
of
parallel
with
the
grain
by
1
0
to
1
5
degrees
until
an
optical
parabola
is
observed.
The
apex
of
the
parabola
is
tan¬
gent
to
the
thread
count
per
inch.
5.2.2
Repeat
5.2.1
for
the
other
(othogonal)
direction
of
the
cloth
yarns.
5.3
If
any
discrepancies
or
disagreement
between
test
data
is
found,
Method
5.1
shall
be
the
referee
method.
5.4
Report
Average
the
number
of
yarns
for
each
direction.
Report
the
individual
readings
and
average
results.
6
.0
Notes
6.1
Summary
The
following
details
should
be
specified
in
the
applicable
performance
specification
or
product
procure¬
ment
specification.
a.
Test
Method
to
be
used
(see
5.1
,
and
5.2).
b.
Specimen
size
and
number
to
be
tested,
if
other
than
specified
(see
3.0).
c.
Where
applicable,
any
additions
or
modifications
to
the
specified
procedure
and
criteria.
The Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
Material in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
Page 1 of 1
IPC-TM-650
TEST
METHODS
MANUAL
1
Scope
This
method
is
used
to
determine
warp
and
fill
thread
count
in
materials
containing
combustible
fibers.
2
Applicable
Documents
None
3
Test
Specimen
The
specimen
may
be
of
any
convenient
size
greater
than
51
mm
x
51
mm.
4
Equipment
4.1
Glass
pick,
ruler,
pointer
or
other
suitable
form
of
count¬
ing
device
4.2
Microscope
5
Procedure
5.1
Yarn
Warp
Place
the
sample
as
flat
as
possible,
with¬
out
tension
on
a
smooth
horizontal
surface.
The
actual
num¬
ber
of
warp
yarns
shall
be
counted
in
25
mm
of
cloth
width.
5.2
Yarn
Filling
The
number
of
yams
per
25
mm
in
the
fill¬
ing
direction
shall
be
determined
as
in
5.1
.
5.3
Evaluation
of
Test
When
the
warp
direction
is
known,
report
the
number
of
yarns
per
25
mm
as
“Ax
B,“
where
A
and
B
are
the
number
of
warp
and
fill
yarns
per
25
mm
respectively.
When
the
warp
direction
is
not
known,
report
the
number
of
yarns
per
25
mm
as
where
A
is
the
number
of
yarns
per
25
mm
in
either
direction
and
B
is
the
number
of
yarns
in
the
perpendicular
direction.
Number
2.1.7.1
Subject
Thread
Count,
Organic
Fibers
Date
Revision
12/87
Originating
Task
Group
N/A
The Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
Material in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
Page 1 of 1
IPC-TM-650
TEST
METHODS
MANUAL
1
.0
Scope
1.1
This
method
describes
the
procedure
required
to
exam¬
ine
materials
and/or
finished
product
for
workmanship,
which
is
the
general
quality
of
the
goods
other
than
as
specified
by
the
applicable
standard.
2
.0
Applicable
Documents
3
.0
Test
Specimens
3.1
Any
piece
of
a
lot
is
subject
to
examination.
Generally,
those
specimens
prepared
for
inspection
and/or
testing
for
specific
properties
may
be
used
to
determine
workmanship.
4
.0
Apparatus
or
Material
4.1
Referee
optical
device
-
10X
magnification.
5
.0
Procedure
Number
2.1.8
Subject
Workmanship
Date
Revision
12/94
B
Originating
Task
Group
MIL-P-13949
Test
Methods
Task
Group
(7-1
1b)
5.1.1
At
any
stage
of
product
handling,
sample
preparation,
or
specimen
conditioning,
the
product
shall
be
under
scrutiny
for
detection
of
any
defects,
flaws,
or
unusual
characteristics
other
than
those
specifically
called
out
in
the
applicable
speci¬
fication,
using
unaided
or
corrected
20/20
vision.
5.1.2
In
the
case
of
a
questionable
evaluation
with
20/20
vision,
a
referee
inspection
shall
be
made
using
the
10X
mag¬
nification.
5.2
Record
and
Report
5.2.1
Each
incidence
of
suspect
flaw
or
defect
shall
be
noted
and
documented.
The
authorized
quality
function
shall
determine
whether
the
reliability,
serviceability,
or
functionality
of
the
product
may
be
affected.
5.2.2
Record
and
report
findings,
including
photographs
of
defect,
if
deemed
necessary.
5.1
Evaluation
6.0
Notes
None