Office chair dynamic impact test
This test for each type of chair, aims to evaluate test chair bear significant external shocks. one Step 1 test. 1 put the chair above test platform. 1. 2 for seat height adjustable chair, seat cushion will be dispatched to the highest point. Other functions will be dispatched to normal conditions of use. If there is a castor, taste should be first to place it in the worst conditions ( Typical case is the castor and horse leg form an Angle of 90 degrees) 。 1. 3 will test sand/sandbag or other impact strength equal fixed connection in a can let their free fall on the seat of the device 1. 4 sand/sandbag placement should be present under the freedom of gasket around the edge of the central axis, and the distance from the top surface of the back of the chair can't more than 13 mm ( 0. 5) Fall, in the process of sand/sandbag can't contact with the back of the chair. Test procedure 2. Function of load test: 1. A diameter of 400 mm ( 16。 ) , 102 kg ( 225 LBS) Suspended sand/sandbag not compressed cushion above 152 mm ( 6in. ) Place, and let it free fall again. 2. Move the bed cleaning/sandbag, press 3. 1 to evaluate product acceptance level. 3. For seat height adjustable chair, seat cushion will be dispatched to the lowest point, and then repeat 1 and 2 2. 2 the destructive load test: 1. Repeat test steps, will test the weight of the sand/sandbag to 136 kg ( 300 LBS) The destructive load. 2. Will be suspended sand/sandbag not compressed cushion above 152 mm ( 6in. ) Place, and let it free fall again. 3. Move the bed cleaning/sandbag, press 3. To assess the product grade is accepted. 4. For chair height can be adjusted, the switch to low, repeat 1. 2. 3 three tests. It may take a chair to test to lowest. Note: if the second chair used to carry out destructive test, it must first be transferred to low, press 2. 1 to a functional impact load test. Accept level 3. 1 function: load the chair can't loss of usability. 3. 2 the destructive load: the interior structure of the chair can't sudden major changes, can accept the loss of usability. Instrument co. , LTD is located in the songshan lake high-tech industrial park, the most innovative features huazhong university of science and technology mechanical nc manufacturing engineering research and software research and development core team, professional production and research and development of all kinds of furniture testing instruments, toys, textile testing instrument testing instruments and general testing instrument. You are welcome to inquire
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Personal protective equipment must meet specific performance requirements before it can be used in demanding workplace environments. ISO, EN, and ASTM standards provide important test methods and performance requirements for different PPE categories. However, the applicable standard depends on the product, intended application, target market, and specific protection requirements.
This guide explains the role of ISO, EN, and ASTM standards in PPE testing and introduces common requirements for safety footwear, protective gloves, protective clothing, masks, and safety helmets. It also explains how laboratories can select suitable PPE testing equipment according to the applicable test method.
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