IPC-TM-650 EN 2022 试验方法.pdf - 第67页

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…

Scope

This

method is used to determine warp and fill

thread count in materials containing combustible fibers.

Applicable Documents

None

Test Specimen

The

specimen may be of any convenient

size greater than 51 mm x 51 mm.

Equipment

4.1

Glass

pick, ruler, pointer or other suitable form of count-

ing device

4.2

Microscope

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 yarns 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 ‘‘A x 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 ‘‘A:B,‘‘ where A is the number

of yarns per 25 mm in either direction and B is the number of

yarns in the perpendicular direction.

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.1.7.1

Subject

Thread

Count, Organic Fibers

Date

12/87

Revision

Originating Task Group

N/A

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.

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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

5.1 Evaluation

5.1.1

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.

6.0 Notes

None

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.1.8

Subject

Workmanship

Date

12/94

Revision

Originating

Task Group

MIL-P-13949 Test Methods Task Group (7-11b)

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.

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1.0

Scope

visually locate, and by feel, evaluate surface

scratches during visual inspection.

If more exacting data is required for referee evaluations of

microsectioning per IPC-TM-650, Method 2.1.1 shall be used.

2.0

Applicable Documents

None.

3.0

Test Specimen

Any

qualified submitted sheet(s) or cut

to size panel(s) or periodic quality conformance specimens.

4.0

Apparatus

Dunlop

Tortex guitar pick 1.00 mm thick-

ness or equivalent.

5.0

Procedures

5.1 Test

5.1.1

Locate

scratches visually using normal or corrected

20/20 vision.

5.1.2

Scratches

which stop the pick when light pressure is

applied are unacceptable. Scratches which can be felt by the

pick but do not stop it are acceptable.

5.1.3

The

referee test shall be by microsection per IPC-TM-

650, Method 2.1.1.

5.2

Evaluation

5.2.1

Evaluate

in the ‘‘working area’’ of the sheet or panel.

Working area excludes a 1 in. border on all four edges.

Compare results with inspection represented in the appropri-

ate specification.

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.1.9

Subject

Surface

Scratch Examination Metal-Clad Foil

Date

5/86

Revision

Originating Task Group

N/A

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.

age1of1

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