Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.
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We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.
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Safety helmets, must be worn when performing most construction works, works in the vicinity of lifting equipment (cranes, hoists, etc.) and suspended loads, works in forestry, works in cisterns, wells, shafts, tunnels, etc. In these situations the use of a ,safety helmet, will help protect against injuries to the scalp, skull and cervical vertebrae.
The ,testing, to certify a ,helmet, to the US Consumer Product ,Safety, Commission's standard for bicycle ,helmets, can be described in six steps. 1. Samples required The lab must procure samples of the ,helmet, model. Full compliance ,testing, requires 16 samples. The lab also needs a number from the manufacturer called the ,Helmet, Positioning Index (HPI).
Helmet, Crash – The Melon ,Test, is an excellent example of a science fair project. It demonstrates what happens to a melon when it is dropped from a specific height without a ,helmet, (the control ) and then shows the effect of different types of ,helmets, (the variable ) on a …
For impact ,testing,, the typical ,test, apparatus consists of a rig that drops a helmeted headform in a guided freefall to an anvil on the floor. You strap the ,helmet, on the headform, turn it upside down so the ,helmet, hits the anvil first and drop it onto the anvil. The ,helmet, is oriented before each drop to ,test, it's most vulnerable areas.
to model industrial ,safety helmet,. Material for ,helmet, has been taken as S-glass reinforced epoxy composite. As the main ,load, in ,helmet, is impact ,load,, the drop ,test, has been simulated in the software environment. Different surfaces of the ,safety helmet, have been simulated separately. All the surfaces were discretized with fine meshing.
In general, the ultimate ,safety, factor is Ultimate ,load,/applied ,load,, and for yield SF is Yield ,load,/applied ,load,. Stresses may not be linearly related to the ,load, due to local plasticity effects. ,Static, preloads may receive no ,safety, or a small one depending on requirements for uncertainties.
The Quick ,Load Test,, 2. The Incremental ,Static Load Test,, and 3. The Constant Rate of Penetration ,Test,. The Contractor must engage the services of a Professional Engineer licensed and registered in New York State, experienced in all aspects of pile ,load testing, and acceptable to the Deputy Chief Engineer Structures (D.C.E.S) to perform the ,load, ...
A ,load, cell has several limits: maximum capacity, overload capacity, mechanical failure limit, and tare weight. Overload capacity and mechanical failure exist as ,safety, features to prevent ,load, cell damage, while maximum capacity and tare weight are necessary considerations for selecting an appropriate ,load, cell for a specific ,testing, application.
Methods of ,testing, protective ,helmets, Determination of stability of protective ,helmets, - ,Static, stability: AS/NZS 2512.5.2:1998 : Methods of ,testing, protective ,helmets, Determination of strength of retention system - Dynamic strength: AS/NZS 2512.9:2006 : Methods of ,testing, protective ,helmets, Determination of ,load, distribution: AS/NZS 2063:2008 ...
The Australian Standard requires a ‘,load, distribution’ ,test, of the ,helmet,’s ability to evenly distribute the ‘,load,’ of an impact. EN and CPSC standards do not have this. The Australian Standard requires that sample ,helmets, pass multiple performance tests. The EN and CPSC standards allow separate ,helmets, to be used for each ,test,.