What 's involved for office chair inspection?
1. Examinationn of labelling and components check
2. Assembly check as instruction manual
4. Static load tests
5. Fatigue tests
6. Impact tests
7. Swivel tests
8. Stability tests
9. Visual inspection for workmanship
10. Packing and shipping verification
Iniitial inspection will include functionality, adjustability and safety, apperance of product. The inspection also need to verify the packing if strong enough to protect product.
Labelling and componets checks
The marking and instructions of a chair need to meet the requirements of the standards. The standard also requires that the major components of the chair ( castros, gas springs, mechanisms, bases, fabrics and filling materials) have themselves been tested to relevant standards.
The standards sets out a complicated series of measurements each chair must comply with. These include ranges and adjustability required for ergonomic reasons, as well as dimensions and reated to stability.
Static Load Tests
The principle here is that relatively high forces are applied to a chair to test its strength in relation to loads of a magnitude that are considered likely to be only infrequently applied. The amount of force varies between test levels. It also varies according to the part of the chair being tested e.g. the seat, back or arms.
The comcept of fatigue testing involves the repeat application of loads selected to simulate a " lifetime" of use. The fatigue tests could not be conducted during inspection.
An assessment of the durability of a chair is gained by subjectiong it to applications of the following impact events:
1. seat impact
2. back impact
3. arm impact
4. the drop test ( the whole chair is dropped onto one leg).
Onsite inspection will conduct seat impact test and whole chair dropped test.
The chair is weighted down and swiveled back and forth 100,000 times. During inspection, we only check several cycles.
The reawards overturning test assesses the tendency of a chair to tip over backwards when subject to specified vertical and horizontal forces.
Veriquality Inspection Service Co.,Ltd. is one professional furniture QC inspection agent in China. Any inquiry of office chair inspection please feel free to contact us: info@veriquality.