GB/T 3903.6-2024 Footwear — Test methods for whole shoe — Slip resistance performance
1 Scope
This document describes the test methods for slip resistance performance of the whole shoe or sole.
This document is applicable to the determination of slip resistance performance of the whole shoe or sole. The slip resistance performance of the sole material can be determined by reference to this document.
This document is not applicable to the determination of slip resistance performance of footwear with studs, metal studs or similar structures on the outsole.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6682-2008 Water for analytical laboratory use - Specification and test methods
GB/T 19766-2016 Building slab of natural marble
GB/T 20239-2023 Wooden flooring for gymnasium
GB/T 22049 Footwear - Standard atmospheres for conditioning and testing of footwear and components for footwear
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
static friction force
resistance of two objects in contact with each other tend to slide relative to each other but remain relatively stationary, they act on each other to hinder relative slide
3.2
static friction coefficient
ratio of the force required to separate the tangential direction of the contact surface of two stationary objects (static friction force, 3.1) to the vertical force acting on the two surfaces
3.3
dynamic friction force
resistance generated on the contact surface of two contact objects to prevent each other from sliding, when there is relative sliding between two objects
3.4
dynamic friction coefficient
ratio of the force required to maintain a constant velocity of motion between contact surfaces (dynamic friction force, 3.3) to the vertical force acting on the two surfaces
3.5
vertical load
force applied in the vertical direction of the test interface
Note: Includes the mass of shoe, last, fixture and weights.
4 Principle
The test sample is placed on the test interface, the specified force is applied in the vertical direction, and the test interface and the sample are moved horizontally or at a certain angle to measure the friction force and calculate the friction coefficient. The slip resistance performance of the whole shoe or sole is evaluated by the friction coefficient.
5 Test apparatus and materials
5.1 Slip resistance testing machine
5.1.1 Sample fixing device
It is used to fix the whole shoe and sole. The sample fixing device can adjust the contact angle between the test part of the sole and the test interface, and the adjustable angle shall not be less than 7°.
5.1.2 Power system
The power system can provide vertical pressure to the combined sample and make it move uniformly in the horizontal direction. The vertical pressure is adjustable in the range of 100N to 600N. The horizontal sliding speed is adjustable in the range of 0.1m /s to 0.5m/s.
5.1.3 Data acquisition and display device
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test apparatus and materials
5.1 Slip resistance testing machine
5.2 Test medium
5.3 Test interface
5.4 Test last
5.5 Wedge
5.6 S96 standard rubber
5.7 Preparation instrument of ice and frost interfaces
5.8 Steel ruler
6 Sample and conditioning
6.1 Sample
6.2 Conditioning
7 Test methods
7.1 Test conditions
7.2 Test mode
7.3 Test procedures
8 Expression of results
9 Test report
Annex A (Normative) Test methods for determining friction coefficient of interface
A.1 Dry friction coefficient
A.2 Wet friction coefficient
Bibliography
