GMW 15478-2008 安全带织带 - 聚酯（材料规范）

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WORLDWIDE

ENGINEERING

STANDARDS

General Specification

Materials

GMW15478

Safety Belt Webbing - Polyester

October 2008

Originating Department: North American Engineering Standards

Page 1 of 10

1 Scope

Note: Nothing in this standard supersedes

applicable laws and regulations

Note: In the event of conflict between the English

and domestic language, the English language shall

take precedence.

This specification establishes the webbing

requirements for 2-point safety belt assemblies

used in GM vehicles. It defines key physical and

functional requirements that are intended to drive

commonality across GM vehicles worldwide and

interchangeability between suppliers' systems

worldwide. The common functions, performance,

reliability, and validation required of the webbing

component are defined in this document.

This specification applies to safety belt webbing

used as buckle straps, and in 2-point safety belt

assemblies.

1.1 Material Description. This specification

describes a narrow fabric woven with continuous

yarns and finished selvages suitable for automotive

safety belt webbing. All safety belt webbings must

meet all applicable laws and regulations in addition

to this specification. The webbing described in this

specification is only intended for use with buckle

straps and 2-point safety belt assemblies.

1.2 Symbols. Not applicable.

1.3 Typical Applications. Webbing described in

this specification is classified as being either:

30 kN webbing (WWNSAD). high strength webbing

for use in most buckle strap applications; 30 kN

webbing is thicker than standard webbing or 27 kN

webbing (WWNSB and WWNSR) standard

strength webbing for use in most 2-point

applications.

1.4 Remarks. Safety belt webbing is a textile

product that is an integral component of a safety

belt assembly. Vehicle safety belts are intended to

provide injury protection benefit to occupants of the

vehicle in the event of a crash. Their primary

function is to restrain an occupant (or child seat),

and to reduce the risk or severity of injury by

managing the occupant's kinetic energy.

Safety belt webbing must function in harmony with

the rest of the safety belt subsystem, be as

comfortable and unobtrusive as practicable, and be

in visual harmony with the interior theme of the

vehicle.

Webbing must also comprehend the differences in

governmental and market requirements of the

different countries in which it is sold.

In the event of a conflict between this specification

and the documents cited herein, the text of this

specification takes precedence. Nothing in this

specification, however, supersedes applicable laws

and regulations unless a specific exemption has

been obtained.

2 References

Note: Only the latest approved standards are

applicable unless otherwise specified.

2.1 External Standards/Specifications.

ASTM D747-02

ISO 105-B02

CMVSS 209

ISO 105-B06

ECE R16

ISO 105-X12

FMVSS 209

ISO 17025

FMVSS 302

ISO/IEC 17025

ISO 105-A01

SAE J361

ISO 105-A02

SAE J882

ISO 105-A03

2.2 GM Standards/Specifications.

GMW3001

GMW14102

GMW3059

GMW14141

GMW3116

GMW14162

GMW3232

GMW14231

GMW3235 A

GMW14317

GMW3417

GMW14334

GMW6992

GMW14831

2.3 Additional References.

 Geometric Gray Scale

 Standard Blue Dye No. 7 Rating Scale

 Supplier Identification Chart

 Textile Engineering Construction Specification

 Tinius Olsen scale

GMW15478

GM WORLDWIDE ENGINEERING STANDARDS

Page 2 of 10

October 2008

3 Requirements

3.1 General Requirements. The tests referred to

in the following requirements are based on historic

performance which has been deemed satisfactory

for meeting customer performance needs.

3.1.1 The use of "shall" in this document denotes a

binding provision that must be met.

3.1.2 The use of "should" denotes a desired

performance level or conformance, (e.g., materials

spec) which, if not met, must be documented and

approved by both the platform release engineer

and the Safety Belt Subsystem Leadership Team.

3.1.3 The term "seat belt" in this document has

been replaced by the term "safety belt", which is

more globally accepted as a descriptor.

3.1.4 Laboratory testing shall be performed by a

laboratory that conforms to ISO/IEC 17025 and is

acceptable to the responsible GM department.

Test reports must conform to Section 5.10.2 and

5.10.3 of ISO/IEC 17025. Supplier shall submit a

letter of compliance.

3.2 Construction Requirements. The following

properties shall be specified by and conform to the

appropriate Textile Engineering Construction

Specification.

3.2.1 Composition. The webbing shall be

composed of 100% polyester fiber. The specific

construction shall be documented in the Safety

Belt Webbing Material Construction Specification

(Data Sheet B1). Refer to the Supplier

Identification Chart as published by Textile

Engineering for yarn identification placement.

3.2.2 Pattern and Construction. For

pattern/construction codes and properties.

3.2.2.1 Woven Pattern Visual Approval

(SAE J361). The woven pattern shall be approved

by the Textile Engineering Department to be

acceptable match to the standard.

3.2.3 Thickness (SAE J882). The thickness shall

be measured using a 6.35 mm pressure foot with

85 g of applied weight. The reading shall be taken

after one (1) minute. See Table 1 for requirement.

3.2.4 Width (FMVSS 209 and ECE R16). All

webbing shall have a maximum width under no

load as shown in Table 1 and 46.00 mm minimum

under 10 018 ± 218 N load. Test material as

received per 4.1.1 and measure width during

breaking-strength test (4.2.1).

Table 1: Construction Properties

ID Code

Elongation

Tinius

Olsen Warp

Tinius Olsen

Filling

Tensile

Strength

Thickness

(mm)

Width

Under No

Load (mm)

Finish

WWNSAD

12 to 14%

<100

45 to 65

30 kN

1.45

± 0.05

49.00

Yes

WWNSB

6 to 8%

25 to 45

10 to 30

26.69 kN

1.22

± 0.05

48.4

Yes

WWNSR

6 to 8%

25 to 45

10 to 30

26.69 kN

1.22

± 0.05

48.00

Yes

4 Standard Test Conditions and

Requirements

4.1 Standard Test Conditions. Webbing samples

are to be subjected to the following specified

conditions prior to testing.

Note: Safety Belt System Level conditioning

requirements are covered in Section 6 and the

Component Technical Specification (CTS)

GMW14831. Parameters specific to webbing are

listed below.

4.1.1 Room Temperature Conditioning (As

Received). Unless otherwise specified, the

material shall be tested under standard conditions,

23 ± 2°C and 65 +2/-5% Relative Humidity (covers

both FMVSS and ECE Regulations). Condition

specimens for 24 h prior to testing or until moisture

equilibrium is reached. If specimens are tested

outside the controlled environment, they shall be

tested within 5 minutes of removal.

4.1.2 Common Environmental Conditioning.

Expose material within a closed space at 80°C

over water for 24 h. Next, subject material to one

24 h cycle in the following sequence:

4.1.2.1 Dry heat soak 6 h at 100°C, attained within

80 minutes.

4.1.2.2 Cold soak 6 h at 0°C, attained within

20 minutes.

GM WORLDWIDE ENGINEERING STANDARDS

GMW15478

October 2008

Page 3 of 10

4.1.2.3 Ambient soak remainder of the 24 h cycle

at 23°C.

4.1.3 Special Light Conditioning. Refer to

FMVSS 209 S5.1 (e) demonstration procedure for

Resistance to Light and ECE R16 Section 7.4.1.2

Conditioning of Straps and Break-strength test

(static) Light Conditioning for the test requirements.

See Section 5.8 for FMVSS 209 color retention

requirement.

4.1.4 Special Heat Conditioning (ECE R16).

Refer to ECE R16 for the details for Special Heat

Conditioning.

4.1.5 Special Cold Conditioning (ECE R16).

Refer to ECE R16 for the details for Special Cold

Conditioning.

4.1.6 Special Water Conditioning (ECE R16).

Refer to ECE R16 for the details for Special Water

Conditioning.

4.2 Tensile Strength (FMVSS 209, S5.1 (b), and

ECE R16). For all tensile tests a minimum of

3 samples shall be tested and reported in Data

Sheet B2.

4.2.1 As Received Section 4.1.1. See Table 1 for

minimum tensile strength requirements for each

construction code/webbing type. The lowest

strength test sample shall not be less than 90% of

the highest strength test sample (group of three

samples tested).

4.2.2 After Common Environmental

Conditioning (Section 4.1.2). All webbing must

retain at least 80% of the average strength

determined in

Section 4.2.1.

4.2.3 After Hex Bar Abrasion (FMVSS 209,

S5.1 (d). All webbing must retain at least 80% of

the average strength determined in Section 4.2.1.

4.2.4 After Light - Conditioning.

4.2.4.1. After Light - Conditioning per FMVSS

209, S5.1 (e). Webbing shall retain at least 75% of

the average strength determined in Section 4.2.1.

4.2.4.2. After Light - Conditioning per ECE R16.

Webbing shall retain at least 75% of the average

strength determined in Section 4.2.1 after tested to

all three conditions called out in ISO 105-B02:

normal conditions, low effective humidity, and high

effective humidity.

4.2.5 After Heat-Conditioning (ECE R16).

Webbing shall retain at least 75% of the average

strength determined in Section 4.2.1.

4.2.6 After Cold-Conditioning (ECE R16).

Webbing shall retain at least 75% of the average

strength determined in Section 4.2.1.

4.2.7 After Water-Conditioning (ECE R16).

Webbing shall retain at least 75% of the average

strength determined in Section 4.2.1.

Note: The technical service conducting the ECE

tensile strength tests may dispense with one or

more of these tests, if the composition of the

material used or information already available

renders the test or tests superfluous.

4.3 Stiffness. Stiffness shall be determined

according to ASTM D747-02 method using a Tinius

Olsen Tester. The Tinius Olsen Stiffness Tester,

Model 02007001, 0.70 J (6 in/lb) capacity, shall be

used with an additional 45 g of added weight. The

distance between the center clamp and the flex

post shall be 12.5 mm. Die cut an additional

10 specimens 75 mm in length and approximately

30 mm in width in the warp direction and midway

between the selvages. Die cut an additional

10 specimens in the filling direction 25 mm in

width. The cut must be parallel to the filling yarns.

The filling length will be the width of the webbing.

Each group of 10 specimens will be divided in two

groups of 5: 5 specimens will be tested face side

up, and 5 specimens will be tested face side down.

Each warp specimen will have enough yarns

removed from each side of the longer dimension

until a width of 25 mm is obtained. Trim the filling

yarns close to the exposed warp yarns. Condition

the prepared specimens to 24 h in the standard

atmosphere.

To test, proceed as follows:

a. Place the end of one specimen (face side up)

into the clamping device and tighten.

b. Rotate the clamping device, by hand, until the

sample just touches the flex post. Continue to

rotate the clamping device until a reading of 1

is indicated on the load scale.

c. Zero the angle indicator and start the machine.

Refer to Table 2 for the angles to take the

stiffness readings for both the warp and fill

directions.

d. Report the individual results for the face side

up and face side down specimens in each

direction in Data Sheet B2 or additional report

if more space is required.

Note: The total weight of the individual weights

must be 45 ± 1 g. Do not use the numbers

stamped on the face of each weight. See Table 2

for specified range.

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标签： #带 #材料规范 #材料

摘要：

GMW 15478-2008是一项由通用汽车公司制定的全球性材料规范标准，专门针对汽车安全带中所使用的聚酯织带。该标准详细规定了聚酯安全带织带的机械性能、耐久性、耐候性、阻燃性以及染色牢度等关键技术要求，适用于乘用车和商用车中用于约束系统的高强度聚酯织带。作为汽车安全系统的核心组件，该规范确保织带在碰撞过程中具备足够的拉伸强度、能量吸收能力及长期使用的稳定性。本规范替代了早期版本，强调了对聚酯纤维的选用、生产工艺控制及质量检测要求，适用于全球供应链中的材料认证与质量审核。理解和遵循GMW 154

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